[Event "All the chess openings"]
[Site "Copyright © PyChess.org"]
[Date "2018.02.10"]
[Round "1"]
[White "White"]
[Black "Black"]
[Result "*"]
[Annotator "http://ecrucru.free.fr/?page=ouvertures"]

1. b4
	(1. g3 {A00 Benko's Opening} 1... h5
		(1... e5 2. Nf3 {A00 Benko's Opening, reversed Alekhine})
	{A00 Lasker simul special})
	(1. g4 {A00 Grob's attack} 1... d5 2. Bg2 c6
		(2... Bxg4 3. c4 {A00 Grob, Fritz gambit} 3... d4 {A00 Grob, Romford counter-gambit})
	3. g5 {A00 Grob, Spike attack})
	(1. h3 {A00 Clemenz (Mead's, Basman's or de Klerk's) Opening} 1... e5 2. a3 {A00 Global Opening})
	(1. Nh3 {A00 Amar (Paris) Opening} 1... d5 2. g3 e5 3. f4 Bxh3 4. Bxh3 exf4 {A00 Amar gambit})
	(1. Nc3 {A00 Dunst (Sleipner, Heinrichsen) Opening} 1... e5
		(1... c5 2. d4 cxd4 3. Qxd4 Nc6 4. Qh4 {A00 Novosibirsk Opening})
	{A00 Dunst (Sleipner-Heinrichsen) Opening} 2. a3 {A00 Battambang Opening})
	(1. a3 {A00 Anderssen's Opening})
	(1. a4 {A00 Ware (Meadow Hay) Opening} 1... e5 2. h4 {A00 Crab Opening})
	(1. c3 {A00 Saragossa Opening})
	(1. d3 {A00 Mieses Opening} 1... e5
		(1... c5 2. Nc3 Nc6 3. g3 {A00 Venezolana Opening})
	{A00 Mieses Opening} 2. Nd2 {A00 Valencia Opening})
	(1. e3 {A00 Van't Kruijs Opening} 1... e5 2. c4 d6 3. Nc3 Nc6 4. b3 Nf6 {A00 Amsterdam attack})
	(1. f3 {A00 Gedult's Opening} 1... e5 2. Kf2 {A00 Hammerschlag (Fried fox/Pork chop Opening)})
	(1. h4 {A00 Anti-Borg (Desprez) Opening})
	(1. Na3 {A00 Durkin's attack})
	(1. b3 {A01 Nimzovich-Larsen attack} 1... e5
		(1... Nf6 {A01 Nimzovich-Larsen attack, Indian variation})
		(1... d5 {A01 Nimzovich-Larsen attack, Classical variation})
		(1... c5 {A01 Nimzovich-Larsen attack, English variation})
		(1... f5 {A01 Nimzovich-Larsen attack, Dutch variation})
		(1... b5 {A01 Nimzovich-Larsen attack, Polish variation})
		(1... b6 {A01 Nimzovich-Larsen attack, Symmetrical variation})
	{A01 Nimzovich-Larsen attack, Modern variation})
	(1. f4 {A02 Bird's Opening} 1... e5
		(1... f5 2. e4 fxe4 3. Nc3 Nf6 4. g4 {A02 Bird's Opening, Swiss gambit})
		(1... g5 {A02 Bird, Hobbs gambit})
		(1... d5 {A03 Bird's Opening} 2. c4
			(2. e4 {A03 Bird's Opening, Williams gambit})
			(2. Nf3 Nf6 3. e3 c5 {A03 Bird's Opening, Lasker variation})
		{A03 Mujannah Opening})
	{A02 Bird, From gambit} 2. fxe5 d6 3. exd6 Bxd6 4. Nf3 g5
		(4... Nh6 5. d4 {A02 Bird, From gambit, Lipke variation})
	{A02 Bird, From gambit, Lasker variation})
	(1. Nf3 {A04 Reti Opening} 1... f5
		(1... d6 {A04 Reti Opening} 2. e4 Bg4 {A04 Reti, Wade defense})
		(1... g5 {A04 Reti, Herrstroem gambit})
		(1... Nf6 {A05 Reti Opening} 2. g3 b5
			(2... g6 {A05 Reti, King's Indian attack} 3. b4 {A05 Reti, King's Indian attack, Reti-Smyslov variation})
		{A05 Reti, King's Indian attack, Spassky's variation})
		(1... d5 {A06 Reti Opening} 2. d3
			(2. b4 {A06 Santasiere's folly})
			(2. e4 {A06 Tennison (Lemberg, Zukertort) gambit})
			(2. b3 {A06 Reti, Nimzovich-Larsen attack})
			(2. g3 {A07 Reti, King's Indian attack (Barcza system)} 2... Nf6
				(2... Bg4 3. Bg2 Nd7 {A07 Reti, King's Indian attack, Keres variation})
				(2... g6 {A07 Reti, King's Indian attack} 3. Bg2 Bg7 4. O-O e5 5. d3 Ne7 {A07 Reti, King's Indian attack, Pachman system})
				(2... c5 {A07 Reti, King's Indian attack (with ...c5)} 3. Bg2 {A08 Reti, King's Indian attack} 3... Nc6 4. O-O e6 5. d3 Nf6 6. Nbd2 Be7 7. e4 O-O 8. Re1 {A08 Reti, King's Indian attack, French variation})
			3. Bg2 c6 4. O-O Bg4 {A07 Reti, King's Indian attack, Yugoslav variation})
			(2. c4 {A09 Reti Opening} 2... d4
				(2... dxc4 {A09 Reti accepted} 3. e3 Be6 {A09 Reti accepted, Keres variation})
			{A09 Reti, Advance variation})
		{A06 Reti, Old Indian attack})
	{A04 Reti v Dutch} 2. e4
		(2. d3 Nf6 3. e4 {A04 Reti, Lisitsin gambit deferred})
	{A04 Reti, Pirc-Lisitsin gambit})
	(1. c4 {A10 English Opening} 1... g6
		(1... b5 {A10 English, Jaenisch gambit})
		(1... f5 {A10 English, Anglo-Dutch defense})
		(1... c6 {A11 English, Caro-Kann defensive system} 2. Nf3 d5 3. b3 {A12 English, Caro-Kann defensive system} 3... Nf6
			(3... Bg4 {A12 English, Caro-Kann defensive system, Bogoljubov variation})
		4. g3
			(4. Bb2 {A12 English, Caro-Kann defensive system} 4... g6
				(4... Bf5 {A12 English, New York (London) defensive system})
				(4... Bg4 {A12 English, Capablanca's variation})
			{A12 English, Bled variation})
		4... Bg4
			(4... Bf5 {A12 English, London defensive system})
		{A12 English, Torre defensive system})
		(1... e6 {A13 English Opening} 2. Nf3 Nf6
			(2... d5 {A13 English Opening, Agincourt variation} 3. b3
				(3. g3 {A13 English Opening, Agincourt variation} 3... c6
					(3... Nf6 {A13 English, Neo-Catalan} 4. Bg2 dxc4
						(4... Be7 5. O-O {A14 English, Neo-Catalan declined} 5... c5 6. cxd5 Nxd5 7. Nc3 Nc6 {A14 English, Symmetrical, Keres defense})
					{A13 English, Neo-Catalan accepted})
				{A13 English, Kurajica defense})
			3... Nf6 4. Bb2 c5 5. e3 {A13 English, Wimpey system})
		3. g3 a6 4. Bg2 b5 {A13 English, Romanishin gambit})
		(1... Nf6 {A15 English, 1...Nf6 (Anglo-Indian defense)} 2. b4
			(2. Nf3 {A15 English Opening})
			(2. Nc3 {A16 English Opening} 2... d5
				(2... e6 {A17 English Opening} 3. Nf3
					(3. e4 {A18 English, Mikenas-Carls variation} 3... d5
						(3... Nc6 {A18 English, Mikenas-Carls, Kevitz variation})
						(3... c5 {A19 English, Mikenas-Carls, Sicilian variation})
					4. e5 {A18 English, Mikenas-Carls, Flohr variation})
				3... b6
					(3... Bb4 {A17 English, Nimzo-English Opening})
				{A17 English, Queens Indian formation} 4. e4 Bb7 5. Bd3 {A17 English, Queens Indian, Romanishin variation})
			{A16 English, Anglo-Gruenfeld defense} 3. cxd5 Nxd5 4. g3
				(4. Nf3 {A16 English, Anglo-Gruenfeld defense} 4... g6 5. g3 Bg7 6. Bg2 e5 {A16 English, Anglo-Gruenfeld defense, Korchnoi variation})
			4... g6 5. Bg2 Nxc3
				(5... Nb6 {A16 English, Anglo-Gruenfeld, Czech defense})
			{A16 English, Anglo-Gruenfeld, Smyslov defense})
		{A15 English orang-utan})
		(1... e5 {A20 English Opening} 2. Nf3
			(2. Nc3 {A21 English Opening} 2... d6
				(2... Bb4 {A21 English, Kramnik-Shirov counterattack})
				(2... Nf6 {A22 English Opening} 3. Nf3
					(3. g3 {A22 English, Carls' Bremen system} 3... d5
						(3... Bb4 {A22 English, Bremen, Smyslov system})
						(3... c6 {A23 English, Bremen system, Keres variation})
						(3... g6 {A24 English, Bremen system with ...g6})
					{A22 English, Bremen, reverse Dragon})
				3... e4 4. Ng5 b5 {A22 English, Bellon gambit})
				(2... Nc6 {A25 English, Sicilian Reversed} 3. g3
					(3. Nf3 {A27 English, Three knights system} 3... Nf6 {A28 English, Four knights system} 4. d4
						(4. e4 {A28 English, Four knights, Nimzovich variation})
						(4. a3 {A28 English, Four knights, Marini variation})
						(4. d3 {A28 English, Four knights, Capablanca variation})
						(4. e3 {A28 English, Four knights, 4.e3} 4... Bb4 5. Qc2 O-O
							(5... Bxc3 {A28 English, Four knights, Romanishin variation})
						6. Nd5 Re8 7. Qf5 {A28 English, Four knights, Stean variation})
						(4. g3 {A29 English, Four knights, kingside Fianchetto})
					4... exd4
						(4... e4 {A28 English, Bradley Beach variation})
					5. Nxd4 Bb4 6. Bg5 h6 7. Bh4 Bxc3+ 8. bxc3 Ne5 {A28 English, Nenarokov variation})
				3... g6 4. Bg2 Bg7 {A25 English, Closed system} 5. e3
					(5. Rb1 {A25 English, Closed, 5.Rb1} 5... Nh6 {A25 English, Closed, 5.Rb1 Taimanov variation})
					(5. d3 {A25 English, Closed system (without ...d6)} 5... d6 {A26 English, Closed system} 6. e4 {A26 English, Botvinnik system})
				5... d6 6. Nge2 Nh6
					(6... Be6 {A25 English, Closed, Hort variation})
				{A25 English, Closed, Taimanov variation})
			3. g3
				(3. Nf3 {A21 English Opening} 3... Bg4 {A21 English, Smyslov defense})
			3... Be6
				(3... c6 {A21 English, Keres variation})
			4. Bg2 Nc6 {A21 English, Troeger defense})
		{A20 English, Nimzovich variation} 2... e4 {A20 English, Nimzovich, Flohr variation})
		(1... c5 {A30 English, Symmetrical variation} 2. Nf3
			(2. Nc3 {A34 English, Symmetrical variation} 2... Nf6
				(2... Nc6 {A35 English, Symmetrical variation} 3. Nf3
					(3. g3 {A36 English, Symmetrical variation} 3... g6 4. Bg2 Bg7 {A36 English, ultra-Symmetrical variation} 5. e3
						(5. e4 {A36 English, Symmetrical, Botvinnik system})
						(5. Nf3 {A37 English, Symmetrical variation} 5... e5
							(5... Nf6 {A38 English, Symmetrical variation} 6. O-O O-O 7. d3
								(7. b3 {A38 English, Symmetrical, Main line with b3})
								(7. d4 {A39 English, Symmetrical, Main line with d4})
							{A38 English, Symmetrical, Main line with d3})
						{A37 English, Symmetrical, Botvinnik system Reversed})
					5... e5 {A36 English, Symmetrical, Botvinnik system Reversed})
				3... Nf6 {A35 English, Symmetrical, Four knights system})
			3. Nf3
				(3. g3 {A34 English, Symmetrical variation} 3... d5 4. cxd5 Nxd5 5. Bg2 Nc7 {A34 English, Symmetrical, Rubinstein system})
			3... d5 4. cxd5 Nxd5 {A34 English, Symmetrical, Three knights system})
		2... Nf6 3. g3
			(3. d4 {A31 English, Symmetrical, Benoni formation} 3... cxd4 4. Nxd4 e6 {A32 English, Symmetrical variation} 5. Nc3 Nc6 {A33 English, Symmetrical variation} 6. g3 Qb6 {A33 English, Symmetrical, Geller variation})
		3... b6 4. Bg2 Bb7 5. O-O e6 6. Nc3 Be7 {A30 English, Symmetrical, hedgehog system} 7. d4 cxd4 8. Qxd4 d6 9. Rd1 a6 10. b3 Nbd7 {A30 English, Symmetrical, hedgehog, flexible formation})
	{A10 English Opening} 2. e4 e5 {A10 English, Adorjan defense})
	(1. d4 {A40 Queen's pawn} 1... Nc6
		(1... e5 {A40 Queen's pawn, Charlick (Englund) gambit} 2. dxe5 Nc6 3. Nf3 Qe7 4. Qd5 f6 5. exf6 Nxf6 {A40 Queen's pawn, Englund gambit})
		(1... b6 {A40 Queen's pawn, English defense})
		(1... b5 {A40 Polish defense})
		(1... e6 {A40 Queen's pawn} 2. c4 b6
			(2... Bb4+ {A40 Queen's pawn, Franco-Indian (Keres) defense})
		{A40 Queen's pawn, Keres defense})
		(1... g6 {A40 Modern defense} 2. c4 Bg7 3. Nc3 c5 4. d5 Bxc3+ 5. bxc3 f5 {A40 Beefeater defense})
		(1... d6 {A41 Queen's Pawn} 2. Nf3
			(2. c4 {A41 Old Indian defense} 2... g6 3. Nc3 Bg7 {A41 Modern defense} 4. e4 {A42 Modern defense, Averbakh system} 4... c5
				(4... f5 {A42 Modern defense, Averbakh system, Randspringer variation})
				(4... Nc6 {A42 Modern defense, Averbakh system, Kotov variation})
			5. Nf3 Qa5 {A42 Pterodactyl defense})
		2... Bg4 {A41 Old Indian, Tartakower (Wade) variation})
		(1... c5 {A43 Old Benoni defense} 2. d5 e6
			(2... f5 {A43 Old Benoni, Mujannah formation})
			(2... Nf6 {A43 Old Benoni defense} 3. Nc3
				(3. Nf3 {A43 Old Benoni defense} 3... c4 {A43 Hawk (Habichd) defense})
			3... Qa5 {A43 Woozle defense})
			(2... d6 {A43 Old Benoni defense} 3. Nc3 g6 {A43 Old Benoni, Schmid's system})
			(2... e5 {A44 Old Benoni defense} 3. e4 d6 {A44 Semi-Benoni (`blockade variation')})
		3. e4 {A43 Old Benoni, Franco-Benoni defense})
		(1... Nf6 {A45 Queen's pawn game} 2. g4
			(2. f4 {A45 Canard Opening})
			(2. f3 {A45 Paleface attack} 2... d5 3. e4
				(3. g4 {A45 Gedult attack})
			{A45 Blackmar-Diemer gambit})
			(2. Bg5 {A45 Trompowsky attack (Ruth, Opovcensky Opening)})
			(2. Nf3 {A46 Queen's pawn game} 2... e6
				(2... Ne4 {A46 Doery defense})
				(2... b6 {A47 Queen's Indian defense} 3. g3 Bb7 4. Bg2 c5 {A47 Queen's Indian, Marienbad system} 5. c4 cxd4 6. Qxd4 {A47 Queen's Indian, Marienbad system, Berg variation})
				(2... g6 {A48 King's Indian, East Indian defense} 3. Bg5
					(3. Bf4 {A48 King's Indian, London system})
					(3. g3 {A49 King's Indian, Fianchetto without c4})
				{A48 King's Indian, Torre attack})
			3. Bg5
				(3. e3 {A46 Queen's pawn, Yusupov-Rubinstein system})
			{A46 Queen's pawn, Torre attack} 3... c5 4. e4 {A46 Queen's pawn, Torre attack, Wagner gambit})
			(2. c4 {A50 Queen's pawn game} 2... Nc6
				(2... b6 {A50 Queen's Indian Accelerated})
				(2... e5 {A51 Budapest defense declined} 3. dxe5 Ne4
					(3... Ng4 {A52 Budapest defense} 4. Nf3
						(4. Bf4 {A52 Budapest, Rubinstein variation})
						(4. e4 {A52 Budapest, Alekhine variation} 4... Nxe5
							(4... d6 {A52 Budapest, Alekhine variation, Balogh gambit})
						5. f4 Nec6 {A52 Budapest, Alekhine, Abonyi variation})
					{A52 Budapest, Adler variation})
				{A51 Budapest, Fajarowicz variation} 4. Qc2 {A51 Budapest, Fajarowicz, Steiner variation})
				(2... d6 {A53 Old Indian defense} 3. Nc3 Bf5
					(3... e5 {A54 Old Indian, Ukrainian variation} 4. e3
						(4. Nf3 {A54 Old Indian, Ukrainian variation, 4.Nf3} 4... Nbd7 5. e4 {A55 Old Indian, Main line})
					4... Nbd7 5. Bd3 {A54 Old Indian, Dus-Khotimirsky variation})
				{A53 Old Indian, Janowski variation})
				(2... c5 {A56 Benoni defense} 3. d5 d6
					(3... Ne4 {A56 Vulture defense})
					(3... e5 {A56 Czech Benoni defense} 4. Nc3 d6 5. e4 g6 {A56 Czech Benoni, King's Indian system})
					(3... b5 {A57 Benko gambit} 4. cxb5 a6 {A57 Benko gambit half accepted} 5. Nc3
						(5. bxa6 {A58 Benko gambit accepted} 5... Bxa6 6. Nc3 d6 7. Nf3
							(7. e4 {A59 Benko gambit, 7.e4} 7... Bxf1 8. Kxf1 g6 9. Nge2
								(9. g3 {A59 Benko gambit} 9... Bg7 10. Kg2 O-O 11. Nf3 {A59 Benko gambit, Main line})
							{A59 Benko gambit, Ne2 variation})
						7... g6 8. Nd2
							(8. g3 {A58 Benko gambit, Fianchetto variation})
						{A58 Benko gambit, Nd2 variation})
					{A57 Benko gambit, Zaitsev system} 5... axb5 6. e4 b4 7. Nb5 d6 8. Bc4 {A57 Benko gambit, Nescafe Frappe attack})
					(3... e6 {A60 Benoni defense} 4. Nc3 exd5 5. cxd5 d6 6. Nf3
						(6. e4 {A65 Benoni, 6.e4} 6... g6 7. f4
							(7. Nf3 {A70 Benoni, Classical with e4 and Nf3} 7... Bg7 8. Be2
								(8. Bg5 {A71 Benoni, Classical, 8.Bg5})
							{A70 Benoni, Classical without 9.O-O} 8... O-O {A72 Benoni, Classical without 9.O-O} 9. O-O {A73 Benoni, Classical, 9.O-O} 9... a6
								(9... Re8 {A76 Benoni, Classical, 9...Re8} 10. Nd2 {A77 Benoni, Classical, 9...Re8, 10.Nd2} 10... Na6 {A78 Benoni, Classical with ...Re8 and ...Na6} 11. f3 {A79 Benoni, Classical, 11.f3})
							10. a4 {A74 Benoni, Classical, 9...a6, 10.a4} 10... Bg4 {A75 Benoni, Classical with ...a6 and 10...Bg4})
						{A66 Benoni, pawn storm variation} 7... Bg7 8. e5
							(8. Bb5+ {A67 Benoni, Taimanov variation})
							(8. Nf3 O-O {A68 Benoni, Four pawns attack} 9. Be2 Re8 {A69 Benoni, Four pawns attack, Main line})
						{A66 Benoni, Mikenas variation})
					6... g6 {A61 Benoni defense} 7. Bg5
						(7. Nd2 {A61 Benoni, Nimzovich (knight's tour) variation})
						(7. g3 {A61 Benoni, Fianchetto variation} 7... Bg7 8. Bg2 O-O {A62 Benoni, Fianchetto variation} 9. O-O Nbd7 {A63 Benoni, Fianchetto, 9...Nbd7} 10. Nd2 a6 11. a4 Re8 {A64 Benoni, Fianchetto, 11...Re8})
					{A61 Benoni, Uhlmann variation})
				{A56 Benoni defense, Hromodka system})
				(2... g6 {E60 King's Indian defense} 3. f3
					(3. g3 {E60 King's Indian, 3.g3} 3... d5
						(3... Bg7 4. Bg2 d5 {E60 King's Indian, 3.g3, counterthrust variation})
					{D70 Neo-Gruenfeld (Kemeri) defense} 4. Bg2 Bg7 5. cxd5
						(5. Nf3 {D73 Neo-Gruenfeld, 5.Nf3} 5... O-O 6. cxd5
							(6. O-O {D77 Neo-Gruenfeld, 6.O-O} 6... c6 {D78 Neo-Gruenfeld, 6.O-O c6} 7. cxd5 cxd5 {D79 Neo-Gruenfeld, 6.O-O, Main line})
						6... Nxd5 7. O-O {D74 Neo-Gruenfeld, 6.cd Nxd5, 7.O-O} 7... c5
							(7... Nb6 {D76 Neo-Gruenfeld, 6.cd Nxd5, 7.O-O Nb6})
						8. Nc3
							(8. dxc5 {D75 Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.dc})
						{D75 Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.Nc3})
					5... Nxd5 {D71 Neo-Gruenfeld, 5.cd} 6. e4 Nb6 7. Ne2 {D72 Neo-Gruenfeld, 5.cd, Main line})
					(3. Nc3 {E61 King's Indian defense, 3.Nc3} 3... d5
						(3... Bg7 4. Nf3
							(4. e4 {E70 King's Indian, 4.e4} 4... d6 5. Nge2
								(5. Bg5 {E70 King's Indian, Accelerated Averbakh system})
								(5. h3 {E71 King's Indian, Makagonov system (5.h3)})
								(5. g3 {E72 King's Indian with e4 & g3} 5... O-O 6. Bg2 e5 7. Nge2 {E72 King's Indian, Pomar system})
								(5. Be2 {E73 King's Indian, 5.Be2} 5... O-O 6. Be3
									(6. Bg5 {E73 King's Indian, Averbakh system} 6... c5 {E74 King's Indian, Averbakh, 6...c5} 7. d5 e6 {E75 King's Indian, Averbakh, Main line})
								{E73 King's Indian, Semi-Averbakh system})
								(5. f4 {E76 King's Indian, Four pawns attack} 5... O-O 6. Nf3
									(6. Be2 {E77 King's Indian, Four pawns attack, 6.Be2} 6... c5 7. d5
										(7. Nf3 {E78 King's Indian, Four pawns attack, with Be2 and Nf3} 7... cxd4 8. Nxd4 Nc6 9. Be3 {E79 King's Indian, Four pawns attack, Main line})
									7... e6 8. dxe6
										(8. Nf3 {E77 King's Indian, Four pawns attack} 8... exd5 9. e5 {E77 King's Indian, Four pawns attack, Florentine gambit})
									8... fxe6 9. g4 Nc6 10. h4 {E77 King's Indian, Six pawns attack})
								6... c5 7. d5 {E76 King's Indian, Four pawns attack, dynamic line})
								(5. f3 {E80 King's Indian, Saemisch variation} 5... O-O {E81 King's Indian, Saemisch, 5...O-O} 6. Be3 c6
									(6... b6 {E82 King's Indian, Saemisch, double Fianchetto variation})
									(6... Nc6 {E83 King's Indian, Saemisch, 6...Nc6} 7. Nge2 Rb8
										(7... a6 {E83 King's Indian, Saemisch, Panno formation} 8. Qd2 Rb8 {E84 King's Indian, Saemisch, Panno Main line})
									{E83 King's Indian, Saemisch, Ruban variation})
									(6... e5 {E85 King's Indian, Saemisch, Orthodox variation} 7. Nge2
										(7. d5 {E87 King's Indian, Saemisch, Orthodox, 7.d5} 7... Nh5
											(7... c6 {E88 King's Indian, Saemisch, Orthodox, 7.d5 c6} 8. Nge2 cxd5 {E89 King's Indian, Saemisch, Orthodox Main line})
										8. Qd2 Qh4+ 9. g3 Nxg3 10. Qf2 Nxf1 11. Qxh4 Nxe3 12. Ke2 Nxc4 {E87 King's Indian, Saemisch, Orthodox, Bronstein variation})
									7... c6 {E86 King's Indian, Saemisch, Orthodox, 7.Nge2 c6})
								7. Bd3 a6 {E81 King's Indian, Saemisch, Byrne variation})
								(5. Nf3 {E90 King's Indian, 5.Nf3} 5... O-O 6. Be3
									(6. Bg5 {E90 King's Indian, Zinnowitz variation})
									(6. Be2 {E91 King's Indian, 6.Be2} 6... Na6
										(6... e5 {E92 King's Indian, Classical variation} 7. dxe5
											(7. Be3 {E92 King's Indian, Gligoric-Taimanov system})
											(7. d5 {E92 King's Indian, Petrosian system} 7... a5
												(7... Nbd7 {E93 King's Indian, Petrosian system, Main line} 8. Bg5 h6 9. Bh4 g5 10. Bg3 Nh5 11. h4 {E93 King's Indian, Petrosian system, Keres variation})
											{E92 King's Indian, Petrosian system, Stein variation})
											(7. O-O {E94 King's Indian, Orthodox variation} 7... c6
												(7... Nbd7 {E94 King's Indian, Orthodox, 7...Nbd7} 8. Re1 {E95 King's Indian, Orthodox, 7...Nbd7, 8.Re1} 8... c6 9. Bf1 a5 {E96 King's Indian, Orthodox, 7...Nbd7, Main line})
												(7... Nc6 {E97 King's Indian, Orthodox, Aronin-Taimanov variation (Yugoslav attack / Mar del Plata variation)} 8. d5 Ne7 9. b4
													(9. Ne1 {E98 King's Indian, Orthodox, Aronin-Taimanov, 9.Ne1} 9... Nd7 10. f3 f5 {E99 King's Indian, Orthodox, Aronin-Taimanov, Main line} 11. g4 {E99 King's Indian, Orthodox, Aronin-Taimanov, Benko attack})
												{E97 King's Indian, Orthodox, Aronin-Taimanov, bayonet attack})
											{E94 King's Indian, Orthodox, Donner variation})
										{E92 King's Indian, Andersson variation})
									{E91 King's Indian, Kazakh variation})
								{E90 King's Indian, Larsen variation})
							{E70 King's Indian, Kramer system})
						4... d6 5. Bg5
							(5. g3 {E62 King's Indian, Fianchetto variation} 5... O-O 6. Bg2 c6
								(6... Nc6 {E62 King's Indian, Fianchetto with ...Nc6} 7. O-O e5
									(7... Bf5 {E62 King's Indian, Fianchetto, lesser Simagin (Spassky) variation})
									(7... Bg4 {E62 King's Indian, Fianchetto, Simagin variation})
									(7... a6 {E63 King's Indian, Fianchetto, Panno variation})
								{E62 King's Indian, Fianchetto, Uhlmann (Szabo) variation})
								(6... c5 {E64 King's Indian, Fianchetto, Yugoslav system} 7. O-O {E65 King's Indian, Fianchetto, Yugoslav, 7.O-O} 7... Nc6 8. d5 {E66 King's Indian, Fianchetto, Yugoslav Panno})
								(6... Nbd7 {E67 King's Indian, Fianchetto with ...Nd7} 7. O-O e5 {E67 King's Indian, Fianchetto, Classical variation} 8. e4 {E68 King's Indian, Fianchetto, Classical variation, 8.e4} 8... c6 9. h3 {E69 King's Indian, Fianchetto, Classical Main line})
							7. O-O Bf5
								(7... Qa5 {E62 King's Indian, Fianchetto, Kavalek (Bronstein) variation})
							{E62 King's Indian, Fianchetto, Larsen system})
						{E61 King's Indian, Smyslov system})
					{D80 Gruenfeld defense} 4. g4
						(4. Bg5 {D80 Gruenfeld, Stockholm variation} 4... Ne4 5. Nxe4 dxe4 6. Qd2 c5 {D80 Gruenfeld, Lundin variation})
						(4. Qb3 {D81 Gruenfeld, Russian variation})
						(4. Bf4 {D82 Gruenfeld, 4.Bf4} 4... Bg7 5. e3 O-O {D83 Gruenfeld, Gruenfeld gambit} 6. Rc1
							(6. cxd5 Nxd5 7. Nxd5 Qxd5 8. Bxc7 {D84 Gruenfeld, Gruenfeld gambit accepted})
						{D83 Gruenfeld, Gruenfeld gambit, Capablanca variation} 6... c5 7. dxc5 Be6 {D83 Gruenfeld, Gruenfeld gambit, Botvinnik variation})
						(4. cxd5 Nxd5 {D85 Gruenfeld, Exchange variation} 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3
							(7. Bc4 {D86 Gruenfeld, Exchange, Classical variation} 7... O-O 8. Ne2 Qd7
								(8... b6 {D86 Gruenfeld, Exchange, Simagin's lesser variation})
								(8... Nc6 {D86 Gruenfeld, Exchange, Simagin's improved variation})
								(8... c5 {D87 Gruenfeld, Exchange, Spassky variation} 9. O-O Nc6 10. Be3 Bg4
									(10... cxd4 11. cxd4 {D88 Gruenfeld, Spassky variation, Main line, 10...cd, 11.cd} 11... Bg4 12. f3 Na5 13. Bd3 Be6 {D89 Gruenfeld, Spassky variation, Main line, 13.Bd3} 14. d5 {D89 Gruenfeld, Exchange, Sokolsky variation})
								11. f3 Na5 12. Bxf7+ {D87 Gruenfeld, Exchange, Seville variation})
							9. O-O b6 {D86 Gruenfeld, Exchange, Larsen variation})
						{D85 Gruenfeld, Modern Exchange variation})
						(4. Nf3 {D90 Gruenfeld, Three knights variation} 4... c6
							(4... Bg7 {D90 Gruenfeld, Three knights variation} 5. Qa4+
								(5. Bg5 {D91 Gruenfeld, 5.Bg5})
								(5. Bf4 {D92 Gruenfeld, 5.Bf4} 5... O-O 6. e3 {D93 Gruenfeld with Bf4	e3})
								(5. e3 {D94 Gruenfeld, 5.e3} 5... O-O 6. b4
									(6. Bd2 {D94 Gruenfeld, Opovcensky variation})
									(6. Bd3 {D94 Gruenfeld with e3	Bd3} 6... c6 7. O-O Bg4
										(7... Bf5 {D94 Gruenfeld, Flohr defense})
									{D94 Gruenfeld, Smyslov defense})
									(6. Qb3 {D95 Gruenfeld with e3 & Qb3} 6... e6
										(6... dxc4 7. Bxc4 Nbd7 8. Ng5 {D95 Gruenfeld, Pachman variation})
									{D95 Gruenfeld, Botvinnik variation})
								{D94 Gruenfeld, Makogonov variation})
								(5. Qb3 {D96 Gruenfeld, Russian variation} 5... dxc4 6. Qxc4 O-O 7. e4 {D97 Gruenfeld, Russian variation with e4} 7... a6
									(7... c6 {D97 Gruenfeld, Russian, Szabo (Boleslavsky) variation})
									(7... b6 {D97 Gruenfeld, Russian, Levenfish variation})
									(7... Nc6 {D97 Gruenfeld, Russian, Byrne (Simagin) variation})
									(7... Na6 {D97 Gruenfeld, Russian, Prins variation})
									(7... Bg4 {D98 Gruenfeld, Russian, Smyslov variation} 8. Be3 Nfd7 9. Be2
										(9. Qb3 {D99 Gruenfeld defense, Smyslov, Main line} 9... c5 {D99 Gruenfeld defense, Smyslov, Yugoslav variation})
									9... Nb6 10. Qd3 Nc6 11. O-O-O {D98 Gruenfeld, Russian, Keres variation})
								{D97 Gruenfeld, Russian, Alekhine (Hungarian) variation})
							{D90 Gruenfeld, Flohr variation})
						{D90 Gruenfeld, Schlechter variation})
					{D80 Gruenfeld, Spike gambit})
					(3. Nf3 {E60 King's Indian, 3.Nf3})
					(3. Qc2 {E60 Queen's pawn, Mengarini attack})
					(3. d5 {E60 King's Indian, Anti-Gruenfeld} 3... b5 {E60 King's Indian, Danube gambit})
				3... d5 {D70 Neo-Gruenfeld defense})
				(2... e6 {E00 Queen's pawn game} 3. Bg5
					(3. g3 {E00 Catalan Opening} 3... d5 4. Bg2 {E01 Catalan, Closed} 4... dxc4
						(4... Be7 5. Nf3 {E06 Catalan, Closed, 5.Nf3} 5... O-O 6. O-O Nbd7 {E07 Catalan, Closed, 6...Nbd7} 7. Nc3
							(7. Qc2 {E08 Catalan, Closed, 7.Qc2} 7... c6 8. Rd1
								(8. b3 {E08 Catalan, Closed, Qc2 & b3} 8... b6 9. Rd1 Bb7 10. Nc3 b5 {E08 Catalan, Closed, Spassky gambit})
								(8. Nbd2 {E09 Catalan, Closed, Main line} 8... b6 9. b3 a5 10. Bb2 Ba6 {E09 Catalan, Closed, Sokolsky variation})
							8... b6 9. a4 {E08 Catalan, Closed, Zagoryansky variation})
						7... c6 8. Qd3 {E07 Catalan, Closed, Botvinnik variation})
					5. Qa4+
						(5. Nf3 {E04 Catalan, Open, 5.Nf3} 5... Be7 {E05 Catalan, Open, Classical line})
					{E02 Catalan, Open, 5.Qa4} 5... Nbd7 6. Qxc4 {E03 Catalan, Open, 5.Qa4 Nbd7, 6.Qxc4} 6... a6 7. Qc2 {E03 Catalan, Open, Alekhine variation})
					(3. Nf3 {E10 Queen's pawn game} 3... c5
						(3... a6 {E10 Dzindzikhashvili defense})
						(3... Ne4 {E10 Doery defense})
						(3... Bb4+ {E11 Bogo-Indian defense} 4. Nbd2
							(4. Bd2 Qe7
								(4... Bxd2+ 5. Qxd2 b6 6. g3 Bb7 7. Bg2 O-O 8. Nc3 Ne4 9. Qc2 Nxc3 10. Ng5 {E11 Bogo-Indian defense, Monticelli trap})
							{E11 Bogo-Indian defense, Nimzovich variation})
						{E11 Bogo-Indian defense, Gruenfeld variation})
						(3... b6 {E12 Queen's Indian defense} 4. Bf4
							(4. a3 {E12 Queen's Indian, Petrosian system})
							(4. Nc3 {E12 Queen's Indian, 4.Nc3} 4... Bb7 5. Bg5 h6 6. Bh4 g5
								(6... Bb4 {E13 Queen's Indian, 4.Nc3, Main line})
							7. Bg3 Nh5 {E12 Queen's Indian, 4.Nc3, Botvinnik variation})
							(4. e3 {E14 Queen's Indian, 4.e3} 4... Bb7 5. Bd3 c5 6. O-O Be7 7. b3 O-O 8. Bb2 cxd4 9. Nxd4 {E14 Queen's Indian, Averbakh variation})
							(4. g3 {E15 Queen's Indian, 4.g3} 4... Ba6
								(4... Bb7 {E15 Queen's Indian, 4.g3 Bb7} 5. Bg2 c5
									(5... Bb4+ {E16 Queen's Indian, Capablanca variation} 6. Bd2 a5
										(6... Be7 {E16 Queen's Indian, Riumin variation})
									{E16 Queen's Indian, Yates variation})
									(5... Be7 {E17 Queen's Indian, 5.Bg2 Be7} 6. Nc3
										(6. O-O {E17 Queen's Indian, Old Main line, 6.O-O} 6... O-O 7. b3
											(7. Nc3 {E18 Queen's Indian, Old Main line, 7.Nc3} 7... Ne4 8. Qc2 Nxc3 9. Qxc3 {E19 Queen's Indian, Old Main line, 9.Qxc3})
										{E17 Queen's Indian, Euwe variation})
									{E17 Queen's Indian, Anti-Queen's Indian system} 6... Ne4 7. Bd2 {E17 Queen's Indian, Opovcensky variation})
								6. d5 exd5 7. Nh4
									(7. Ng5 {E15 Queen's Indian, Buerger variation})
								{E15 Queen's Indian, Rubinstein variation})
							{E15 Queen's Indian, Nimzovich variation (exaggerated Fianchetto)})
						{E12 Queen's Indian, Miles variation})
					4. d5 b5 {E10 Blumenfeld counter-gambit} 5. dxe6
						(5. Bg5 {E10 Blumenfeld counter-gambit, Dus-Chotimursky variation} 5... exd5 6. cxd5 h6 {E10 Blumenfeld counter-gambit, Spielmann variation})
					5... fxe6 6. cxb5 d5 {E10 Blumenfeld counter-gambit accepted})
					(3. Nc3 Bb4 {E20 Nimzo-Indian defense} 4. f3
						(4. Qd3 {E20 Nimzo-Indian, Mikenas attack})
						(4. g3 {E20 Nimzo-Indian, Romanishin-Kasparov (Steiner) system})
						(4. Nf3 {E21 Nimzo-Indian, Three knights variation} 4... c5 5. d5 {E21 Nimzo-Indian, Three knights, Korchnoi variation} 5... Ne4 {E21 Nimzo-Indian, Three knights, Euwe variation})
						(4. Qb3 {E22 Nimzo-Indian, Spielmann variation} 4... c5 5. dxc5 Nc6 {E23 Nimzo-Indian, Spielmann, 4...c5, 5.dc Nc6} 6. Nf3 Ne4 7. Bd2 Nxd2
							(7... Nxc5 {E23 Nimzo-Indian, Spielmann, San Remo variation} 8. Qc2 f5 9. g3 {E23 Nimzo-Indian, Spielmann, Staahlberg variation})
						{E23 Nimzo-Indian, Spielmann, Karlsbad variation})
						(4. a3 Bxc3+ 5. bxc3 {E24 Nimzo-Indian, Saemisch variation} 5... c5
							(5... O-O {E27 Nimzo-Indian, Saemisch variation} 6. e3 {E28 Nimzo-Indian, Saemisch variation} 6... c5 7. Bd3 Nc6 {E29 Nimzo-Indian, Saemisch, Main line} 8. Ne2 b6 9. e4 Ne8 {E29 Nimzo-Indian, Saemisch, Capablanca variation})
						6. f3
							(6. e3 {E26 Nimzo-Indian, Saemisch variation} 6... b6 {E26 Nimzo-Indian, Saemisch, O'Kelly variation})
						6... d5 7. e3
							(7. cxd5 {E25 Nimzo-Indian, Saemisch variation} 7... Nxd5 8. dxc5 {E25 Nimzo-Indian, Saemisch, Keres variation} 8... f5 {E25 Nimzo-Indian, Saemisch, Romanovsky variation})
						7... O-O 8. cxd5 Nxd5 {E24 Nimzo-Indian, Saemisch, Botvinnik variation})
						(4. Bg5 {E30 Nimzo-Indian, Leningrad variation} 4... h6 5. Bh4 c5 6. d5 b5
							(6... d6 {E31 Nimzo-Indian, Leningrad, Main line})
						{E30 Nimzo-Indian, Leningrad, ...b5 gambit})
						(4. Qc2 {E32 Nimzo-Indian, Classical variation} 4... O-O
							(4... Nc6 {E33 Nimzo-Indian, Classical, 4...Nc6} 5. Nf3 d6 {E33 Nimzo-Indian, Classical, Milner-Barry (Zurich) variation})
							(4... d5 {E34 Nimzo-Indian, Classical, Noa variation} 5. cxd5
								(5. a3 {E36 Nimzo-Indian, Classical, Noa variation, 5.a3} 5... Bxc3+ 6. Qxc3 Nc6
									(6... Ne4 {E36 Nimzo-Indian, Classical, Noa variation, Main line} 7. Qc2 {E37 Nimzo-Indian, Classical, Noa variation, Main line, 7.Qc2} 7... Nc6 8. e3 e5 {E37 Nimzo-Indian, Classical, San Remo variation})
								{E36 Nimzo-Indian, Classical, Botvinnik variation})
							5... exd5 {E35 Nimzo-Indian, Classical, Noa variation, 5.cd ed})
							(4... c5 {E38 Nimzo-Indian, Classical, 4...c5} 5. dxc5 O-O {E39 Nimzo-Indian, Classical, Pirc variation})
						5. a3 Bxc3+ 6. Qxc3 b5 {E32 Nimzo-Indian, Classical, Adorjan gambit})
						(4. e3 {E40 Nimzo-Indian, 4.e3} 4... Nc6
							(4... c5 {E41 Nimzo-Indian, 4.e3 c5} 5. Bd3
								(5. Ne2 {E42 Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein)})
							5... Nc6 6. Nf3 Bxc3+ 7. bxc3 d6 {E41 Nimzo-Indian, e3, Huebner variation})
							(4... b6 {E43 Nimzo-Indian, Fischer variation} 5. Ne2 {E44 Nimzo-Indian, Fischer variation, 5.Ne2} 5... Ba6 {E45 Nimzo-Indian, 4.e3, Bronstein (Byrne) variation})
							(4... O-O {E46 Nimzo-Indian, 4.e3 O-O} 5. Ne2
								(5. Bd3 {E47 Nimzo-Indian, 4.e3 O-O, 5.Bd3} 5... d5 {E48 Nimzo-Indian, 4.e3 O-O, 5.Bd3 d5} 6. a3 Bxc3+ 7. bxc3 {E49 Nimzo-Indian, 4.e3, Botvinnik system})
								(5. Nf3 {E50 Nimzo-Indian, 4.e3 e8g8, 5.Nf3, without ...d5} 5... d5 {E51 Nimzo-Indian, 4.e3 e8g8, 5.Nf3 d7d5} 6. Bd3 Nc6
									(6... b6 {E52 Nimzo-Indian, 4.e3, Main line with ...b6})
									(6... c5 {E53 Nimzo-Indian, 4.e3, Main line with ...c5} 7. O-O b6
										(7... Nbd7 {E53 Nimzo-Indian, 4.e3, Gligoric system with 7...Nbd7})
										(7... dxc4 8. Bxc4 {E54 Nimzo-Indian, 4.e3, Gligoric system with 7...dc} 8... Qe7
											(8... Nbd7 {E55 Nimzo-Indian, 4.e3, Gligoric system, Bronstein variation})
										{E54 Nimzo-Indian, 4.e3, Gligoric system, Smyslov variation})
										(7... Nc6 {E56 Nimzo-Indian, 4.e3, Main line with 7...Nc6} 8. a3 dxc4
											(8... Bxc3 9. bxc3 {E58 Nimzo-Indian, 4.e3, Main line with 8...Bxc3} 9... dxc4 10. Bxc4 {E59 Nimzo-Indian, 4.e3, Main line})
										9. Bxc4 cxd4 {E57 Nimzo-Indian, 4.e3, Main line with 8...dc and 9...cd})
									{E53 Nimzo-Indian, 4.e3, Keres variation})
								7. O-O dxc4 {E51 Nimzo-Indian, 4.e3, Ragozin variation})
							{E46 Nimzo-Indian, Reshevsky variation} 5... d5 6. a3 Bd6 {E46 Nimzo-Indian, Simagin variation})
						{E40 Nimzo-Indian, 4.e3, Taimanov variation})
					{E20 Nimzo-Indian, Kmoch variation})
				{E00 Neo-Indian (Seirawan) attack})
			{A50 Kevitz-Trajkovich defense})
		{A45 Queen's pawn, Bronstein gambit})
		(1... f5 {A80 Dutch} 2. Nc3
			(2. Qd3 {A80 Dutch, Manhattan (Alapin, Ulvestad) variation} 2... e6 3. g4 {A80 Dutch, Von Pretzel gambit})
			(2. h3 {A80 Dutch, Korchnoi attack})
			(2. g4 {A80 Dutch, Krejcik gambit})
			(2. Bg5 {A80 Dutch, 2.Bg5 variation})
			(2. g3 {A81 Dutch defense} 2... Nf6
				(2... g6 3. Bg2 Bg7 4. Nf3
					(4. Nh3 {A81 Dutch, Leningrad, Karlsbad variation})
				4... c6 5. O-O Nh6 {A81 Dutch, Leningrad, Basman system})
			3. Bg2 e6
				(3... g6 {A81 Dutch defense})
			4. Nh3 {A81 Dutch defense, Blackburne variation})
			(2. e4 {A82 Dutch, Staunton gambit} 2... d6
				(2... fxe4 {A82 Dutch, Staunton gambit} 3. Nc3 Nf6 4. g4
					(4. Bg5 {A83 Dutch, Staunton gambit, Staunton's line} 4... g6
						(4... c6 {A83 Dutch, Staunton gambit, Chigorin variation})
						(4... b6 {A83 Dutch, Staunton gambit, Nimzovich variation})
					5. h4
						(5. f3 {A83 Dutch, Staunton gambit, Lasker variation})
					{A83 Dutch, Staunton gambit, Alekhine variation})
				{A82 Dutch, Staunton gambit, Tartakower variation})
			{A82 Dutch, Balogh defense})
			(2. c4 {A84 Dutch defense} 2... g6
				(2... e6 {A84 Dutch defense} 3. Nc3
					(3. e4 {A84 Dutch, Staunton gambit deferred})
				{A84 Dutch defense, Rubinstein variation})
				(2... Nf6 {A84 Dutch defense} 3. Nc3
					(3. g3 {A86 Dutch with c4 & g3} 3... d6
						(3... g6 {A86 Dutch, Leningrad variation} 4. Bg2 Bg7 5. Nf3 {A87 Dutch, Leningrad, Main variation} 5... O-O 6. O-O d6 7. Nc3 c6
							(7... Nc6 {A89 Dutch, Leningrad, Main variation with Nc6})
						{A88 Dutch, Leningrad, Main variation with c6})
						(3... e6 4. Bg2 {A90 Dutch defense} 4... Bb4+
							(4... Be7 {A91 Dutch defense} 5. Nf3 O-O {A92 Dutch defense} 6. O-O Ne4
								(6... d5 {A92 Dutch, Stonewall variation} 7. Nc3
									(7. b3 {A93 Dutch, Stonewall, Botwinnik variation} 7... c6 8. Ba3 {A94 Dutch, Stonewall with Ba3})
								{A92 Dutch, Stonewall with Nc3} 7... c6 {A95 Dutch, Stonewall with Nc3} 8. Qc2 Qe8 9. Bg5 {A95 Dutch, Stonewall: Chekhover variation})
								(6... d6 {A96 Dutch, Classical variation} 7. Nc3 Qe8 {A97 Dutch, Ilyin-Genevsky variation} 8. Re1
									(8. Qc2 {A98 Dutch, Ilyin-Genevsky variation with Qc2})
									(8. b3 {A99 Dutch, Ilyin-Genevsky variation with b3})
								{A97 Dutch, Ilyin-Genevsky, Winter variation})
							{A92 Dutch defense, Alekhine variation})
						{A90 Dutch defense, Dutch-Indian (Nimzo-Dutch) variation} 5. Bd2 Be7 {A90 Dutch-Indian, Alekhine variation})
					4. Bg2 c6 5. Nc3 Qc7 {A86 Dutch, Hort-Antoshin system})
				{A85 Dutch with c4 & Nc3})
			3. Nc3 Nh6 {A84 Dutch defense, Bladel variation})
		2... Nf6 3. g4 {A80 Dutch, Spielmann gambit})
		(1... d5 {D00 Queen's pawn game} 2. Bf4
			(2. Bg5 {D00 Levitsky attack (Queen's Bishop attack)})
			(2. e4 {D00 Blackmar gambit})
			(2. e3 Nf6 3. Bd3 {D00 Queen's pawn, Stonewall attack})
			(2. Nc3 {D00 Queen's pawn, Chigorin variation} 2... Bg4
				(2... Nf6 3. e4
					(3. Bg5 {D01 Richter-Veresov attack} 3... Bf5 4. Bxf6
						(4. f3 {D01 Richter-Veresov attack, Richter variation})
					{D01 Richter-Veresov attack, Veresov variation})
				{D00 Blackmar-Diemer gambit} 3... dxe4
					(3... e5 {D00 Blackmar-Diemer, Lemberg counter-gambit})
				4. f3 exf3 5. Nxf3 e6 {D00 Blackmar-Diemer, Euwe defense})
			{D00 Queen's pawn, Anti-Veresov})
			(2. Nf3 {D02 Queen's pawn game} 2... Nc6
				(2... c5 {D02 Queen's pawn game, Krause variation})
				(2... Nf6 {D02 Queen's pawn game} 3. Bf4
					(3. Bg5 {D03 Torre attack (Tartakower variation)})
					(3. e3 {D04 Queen's pawn game} 3... e6 {D05 Queen's pawn game} 4. Nbd2
						(4. Bd3 {D05 Queen's pawn game} 4... c5 5. b3
							(5. c3 {D05 Colle system})
						{D05 Queen's pawn game, Rubinstein (Colle-Zukertort) variation})
					4... c5 5. b3 {D05 Queen's pawn game, Zukertort variation})
				{D02 Queen's Bishop game})
			{D02 Queen's pawn game, Chigorin variation})
			(2. c4 {D06 Queen's Gambit} 2... Bf5
				(2... Nf6 {D06 Queen's Gambit declined, Marshall defense})
				(2... c5 {D06 Queen's Gambit declined, Symmetrical (Austrian) defense})
				(2... Nc6 {D07 Queen's Gambit declined, Chigorin defense} 3. Nc3 dxc4 4. Nf3 {D07 Queen's Gambit declined, Chigorin defense, Janowski variation})
				(2... e5 {D08 Queen's Gambit declined, Albin counter-gambit} 3. dxe5 d4 4. e3
					(4. Nf3 {D08 Queen's Gambit declined, Albin counter-gambit} 4... Nc6 5. Nbd2
						(5. g3 {D09 Queen's Gambit declined, Albin counter-gambit, 5.g3})
					{D08 Queen's Gambit declined, Albin counter-gambit, Alapin variation} 5... Bg4
						(5... f6 {D08 Queen's Gambit declined, Albin counter-gambit, Janowski variation})
						(5... Qe7 {D08 Queen's Gambit declined, Albin counter-gambit, Balogh variation})
					6. h3 Bxf3 7. Nxf3 Bb4+ 8. Bd2 Qe7 {D08 Queen's Gambit declined, Albin counter-gambit, Krenosz variation})
				4... Bb4+ 5. Bd2 dxe3 {D08 Queen's Gambit declined, Albin counter-gambit, Lasker trap})
				(2... c6 {D10 Queen's Gambit declined"Slav defense} 3. Nc3
					(3. cxd5 {D10 Queen's Gambit declined"Slav defense, Exchange variation})
					(3. Nf3 {D11 Queen's Gambit declined"Slav, 3.Nf3} 3... Nf6 4. Nbd2
						(4. e3 {D11 Queen's Gambit declined"Slav, 4.e3} 4... Bf5 {D12 Queen's Gambit declined"Slav, 4.e3 Bf5} 5. cxd5 cxd5 6. Qb3
							(6. Nc3 {D12 Queen's Gambit declined"Slav, Exchange variation} 6... e6 7. Ne5 Nfd7 {D12 Queen's Gambit declined"Slav, Amsterdam variation})
						6... Qc8 7. Bd2 e6 8. Na3 {D12 Queen's Gambit declined"Slav, Landau variation})
						(4. cxd5 cxd5 {D13 Queen's Gambit declined"Slav, Exchange variation} 5. Nc3 Nc6 6. Bf4 Bf5 {D14 Queen's Gambit declined"Slav, Exchange variation, 6.Bf4 Bf5} 7. e3 e6 8. Qb3 Bb4 {D14 Queen's Gambit declined"Slav, Exchange, Trifunovic variation})
						(4. Nc3 {D15 Queen's Gambit declined"Slav, 4.Nc3} 4... Qb6
							(4... g6 {D15 Queen's Gambit declined"Slav, Schlechter variation})
							(4... dxc4 {D15 Queen's Gambit declined"Slav accepted} 5. e3
								(5. e4 {D15 Queen's Gambit declined"Slav, Slav gambit} 5... b5 6. e5 {D15 Queen's Gambit declined"Slav, Tolush-Geller gambit})
								(5. a4 {D16 Queen's Gambit declined"Slav accepted, Alapin variation} 5... Na6
									(5... e6 {D16 Queen's Gambit declined"Slav, Soultanbeieff variation})
									(5... Bg4 {D16 Queen's Gambit declined"Slav, Steiner variation})
									(5... Bf5 {D17 Queen's Gambit declined"Slav, Czech defense} 6. Ne5
										(6. e3 {D18 Queen's Gambit declined"Slav, Dutch variation} 6... Na6
											(6... e6 7. Bxc4 Bb4 8. O-O {D19 Queen's Gambit declined"Slav, Dutch variation} 8... O-O 9. Qe2 {D19 Queen's Gambit declined"Slav, Dutch variation, Main line} 9... Ne4 10. g4 {D19 Queen's Gambit declined"Slav, Dutch, Saemisch variation})
										{D18 Queen's Gambit declined"Slav, Dutch, Lasker variation})
									{D17 Queen's Gambit declined"Slav, Krause attack} 6... Nbd7
										(6... e6 {D17 Queen's Gambit declined"Slav, Wiesbaden variation})
									7. Nxc4 Qc7 8. g3 e5 {D17 Queen's Gambit declined"Slav, Carlsbad variation})
								6. e4 Bg4 {D16 Queen's Gambit declined"Slav, Smyslov variation})
							{D15 Queen's Gambit declined"Slav, 5.e3 (Alekhine variation)})
						{D15 Queen's Gambit declined"Slav, Suechting variation})
					{D11 Queen's Gambit declined"Slav, Breyer variation})
				3... dxc4
					(3... e5 {D10 Queen's Gambit declined"Slav, Winawer counter-gambit})
				4. e4 {D10 Queen's Gambit declined"Slav defense, Alekhine variation})
				(2... dxc4 {D20 Queen's gambit accepted} 3. e4
					(3. Nf3 {D21 Queen's Gambit accepted, 3.Nf3} 3... b5
						(3... a6 {D22 Queen's Gambit accepted, Alekhine defense} 4. e4
							(4. e3 Bg4
								(4... b5 {D22 Queen's Gambit accepted, Haberditz variation})
							5. Bxc4 e6 6. d5 {D22 Queen's Gambit accepted, Alekhine defense, Alatortsev variation})
						{D21 Queen's Gambit accepted, Alekhine defense, Borisenko-Furman variation})
						(3... Nf6 {D23 Queen's gambit accepted} 4. Qa4+
							(4. Nc3 {D24 QGA, 4.Nc3} 4... a6 5. e4 {D24 QGA, Bogolyubov variation})
							(4. e3 {D25 QGA, 4.e3} 4... g6
								(4... Bg4 {D25 QGA, Janowsky-Larsen variation})
								(4... Be6 {D25 QGA, Flohr variation})
								(4... e6 {D26 Queen's Gambit accepted, 4...e6} 5. Bxc4 c5 {D26 Queen's Gambit accepted, Classical variation} 6. Qe2
									(6. O-O {D26 Queen's Gambit accepted, Classical variation, 6.O-O} 6... cxd4
										(6... a6 {D27 Queen's Gambit accepted, Classical, 6...a6} 7. a4
											(7. e4 {D27 Queen's Gambit accepted, Classical, Geller variation})
											(7. Qe2 {D28 Queen's Gambit accepted, Classical, 7.Qe2} 7... b5 {D28 Queen's Gambit accepted, Classical, 7...b5} 8. Bb3 Nc6
												(8... Bb7 {D29 Queen's Gambit accepted, Classical, 8...Bb7} 9. Rd1 Nbd7 10. Nc3 Bd6 {D29 Queen's Gambit accepted, Classical, Smyslov variation})
											9. Rd1 c4 10. Bc2 Nb4 11. Nc3 Nxc2 12. Qxc2 Bb7 13. d5 Qc7 {D28 Queen's Gambit accepted, Classical, Flohr variation})
										{D27 Queen's Gambit accepted, Classical, Rubinstein variation})
									{D26 Queen's Gambit accepted, Classical, Steinitz variation})
								6... a6 7. dxc5 Bxc5 8. O-O Nc6 9. e4 b5 10. e5 {D26 Queen's Gambit accepted, Classical, Furman variation})
							{D25 QGA, Smyslov variation})
						{D23 Queen's Gambit accepted, Mannheim variation})
					{D21 Queen's Gambit accepted, Ericson variation})
				{D20 Queen's Gambit accepted, 3.e4} 3... c5
					(3... f5 {D20 Queen's Gambit accepted, Schwartz defense})
				4. d5 Nf6 5. Nc3 b5 {D20 Queen's Gambit accepted, Linares variation})
				(2... e6 {D30 Queen's gambit declined} 3. Nf3
					(3. Nc3 {D31 Queen's Gambit declined, 3.Nc3} 3... a6
						(3... b6 {D31 Queen's Gambit declined, Alapin variation})
						(3... Be7 {D31 Queen's Gambit declined, Charousek (Petrosian) variation})
						(3... c6 {D31 Queen's Gambit declined, Semi-Slav} 4. Nf3
							(4. e4 {D31 Queen's Gambit declined, Semi-Slav, Marshall gambit})
						4... dxc4 {D31 Queen's Gambit declined, Semi-Slav, Noteboom variation} 5. a4 Bb4 6. e3 b5 7. Bd2 Qe7
							(7... Qb6 {D31 Queen's Gambit declined, Semi-Slav, Junge variation})
							(7... a5 {D31 Queen's Gambit declined, Semi-Slav, Abrahams variation})
						{D31 Queen's Gambit declined, Semi-Slav, Koomen variation})
						(3... c5 {D32 Queen's Gambit declined, Tarrasch defense} 4. cxd5 cxd4
							(4... exd5 {D32 Queen's Gambit declined, Tarrasch defense, 4.cd ed} 5. dxc5
								(5. e4 {D32 Queen's Gambit declined, Tarrasch defense, Marshall gambit})
								(5. Nf3 {D32 Queen's Gambit declined, Tarrasch defense} 5... Nc6 6. g3 {D33 Queen's Gambit declined, Tarrasch, Schlechter-Rubinstein system} 6... c4
									(6... Nf6 {D33 Queen's Gambit declined, Tarrasch, Prague variation} 7. Bg2 Bg4
										(7... Be7 {D34 Queen's Gambit declined, Tarrasch, Prague variation, 7...Be7} 8. O-O O-O {D34 Queen's Gambit declined, Tarrasch, Prague variation, Normal position} 9. dxc5
											(9. Bg5 {D34 Queen's Gambit declined, Tarrasch, Prague variation, 9.Bg5} 9... Be6 10. Rc1 c4
												(10... b6 {D34 Queen's Gambit declined, Tarrasch, Stoltz variation})
											{D34 Queen's Gambit declined, Tarrasch, Bogolyubov variation})
										9... Bxc5 10. Na4 {D34 Queen's Gambit declined, Tarrasch, Reti variation})
									{D33 Queen's Gambit declined, Tarrasch, Wagner variation})
								{D33 Queen's Gambit declined, Tarrasch, Folkestone (Swedish) variation} 7. e4 {D33 Queen's Gambit declined, Tarrasch, Schlechter-Rubinstein system, Rey Ardid variation})
							5... d4 6. Na4 b5 {D32 Queen's Gambit declined, Tarrasch defense, Tarrasch gambit})
						{D32 Queen's Gambit declined, Tarrasch, von Hennig-Schara gambit})
						(3... Nf6 {D35 Queen's Gambit declined, 3...Nf6} 4. Bf4
							(4. cxd5 {D35 Queen's Gambit declined, Exchange variation} 4... exd5 5. Nf3
								(5. Bg5 {D35 Queen's Gambit declined, Exchange, positional line} 5... Be7
									(5... c6 {D35 Queen's Gambit declined, Exchange, positional line, 5...c6} 6. Qc2 {D36 Queen's Gambit declined, Exchange, positional line, 6.Qc2})
								6. e3 O-O 7. Bd3 Nbd7 8. Qc2 Re8 9. Nge2 Nf8 10. O-O-O {D35 Queen's Gambit declined, Exchange, chameleon variation})
							5... Nbd7 6. Bf4 {D35 Queen's Gambit declined, Exchange, Saemisch variation})
							(4. Nf3 {D37 Queen's Gambit declined, 4.Nf3} 4... Be7
								(4... Bb4 {D38 Queen's Gambit declined, Ragozin variation} 5. Bg5 dxc4 {D39 Queen's Gambit declined, Ragozin, Vienna variation})
								(4... c5 {D40 Queen's Gambit declined, Semi-Tarrasch defense} 5. e3
									(5. Bg5 {D40 Queen's Gambit declined, Semi-Tarrasch defense, Pillsbury variation})
									(5. cxd5 {D41 Queen's Gambit declined, Semi-Tarrasch, 5.cd} 5... Nxd5 6. e4
										(6. e3 {D41 Queen's Gambit declined, Semi-Tarrasch with e3} 6... Nc6 7. Bd3 {D42 Queen's Gambit declined, Semi-Tarrasch, 7.Bd3})
									6... Nxc3 7. bxc3 cxd4 8. cxd4 Bb4+ 9. Bd2 Bxd2+
										(9... Qa5 {D41 Queen's Gambit declined, Semi-Tarrasch, San Sebastian variation})
									10. Qxd2 O-O 11. Bb5 {D41 Queen's Gambit declined, Semi-Tarrasch, Kmoch variation})
								5... Nc6 6. Bd3 Bd6 7. O-O O-O {D40 Queen's Gambit declined, Semi-Tarrasch, Symmetrical variation} 8. Qe2 Qe7 9. dxc5 Bxc5 10. e4 {D40 Queen's Gambit declined, Semi-Tarrasch, Levenfish variation})
								(4... c6 {D43 Queen's Gambit declined Semi-Slav} 5. Bg5
									(5. e3 {D45 Queen's Gambit declined Semi-Slav, 5.e3} 5... Ne4
										(5... a6 {D45 Queen's Gambit declined Semi-Slav, Accelerated Meran (Alekhine variation)})
										(5... Nbd7 {D45 Queen's Gambit declined Semi-Slav, 5...Nd7} 6. Qc2
											(6. Ne5 {D45 Queen's Gambit declined Semi-Slav, Rubinstein (anti-Meran) system})
											(6. Bd3 {D46 Queen's Gambit declined Semi-Slav, 6.Bd3} 6... Be7
												(6... Bb4 {D46 Queen's Gambit declined Semi-Slav, Romih variation})
												(6... Bd6 {D46 Queen's Gambit declined Semi-Slav, Chigorin defense})
												(6... dxc4 7. Bxc4 {D47 Queen's Gambit declined Semi-Slav, 7.Bc4} 7... b5 {D47 Queen's Gambit declined Semi-Slav, Meran variation} 8. Bd3 b4
													(8... Bb7 {D47 Queen's Gambit declined Semi-Slav, Meran, Wade variation})
													(8... a6 {D48 Queen's Gambit declined Semi-Slav, Meran, 8...a6} 9. e4 b4
														(9... c5 {D48 Queen's Gambit declined Semi-Slav, Meran} 10. d5
															(10. e5 {D48 Queen's Gambit declined Semi-Slav, Meran, Old Main line} 10... cxd4 11. Nxb5 {D49 Queen's Gambit declined Semi-Slav, Meran, Blumenfeld variation} 11... Ng4
																(11... Nxe5 {D49 Queen's Gambit declined Semi-Slav, Meran, Sozin variation} 12. Nxe5 axb5 13. Qf3
																	(13. O-O {D49 Queen's Gambit declined Semi-Slav, Meran, Sozin variation} 13... Qd5 14. Qe2 Ba6 15. Bg5 {D49 Queen's Gambit declined Semi-Slav, Meran, Rellstab attack})
																{D49 Queen's Gambit declined Semi-Slav, Meran, Stahlberg variation})
															{D49 Queen's Gambit declined Semi-Slav, Meran, Rabinovich variation})
														{D48 Queen's Gambit declined Semi-Slav, Meran, ReynOlds' variation})
													{D48 Queen's Gambit declined Semi-Slav, Meran, Pirc variation})
												{D47 Queen's Gambit declined Semi-Slav, neo-Meran (Lundin variation)})
											{D46 Queen's Gambit declined Semi-Slav, Bogolyubov variation})
										{D45 Queen's Gambit declined Semi-Slav, Stoltz variation})
									6. Bd3 f5 {D45 Queen's Gambit declined Semi-Slav, Stonewall defense})
								5... h6
									(5... dxc4 {D44 Queen's Gambit declined Semi-Slav, 5.Bg5 dc} 6. e4 {D44 Queen's Gambit declined Semi-Slav, Botvinnik system (anti-Meran)} 6... b5 7. e5 h6 8. Bh4 g5 9. exf6
										(9. Nxg5 {D44 Queen's Gambit declined Semi-Slav, Anti-Meran gambit} 9... hxg5
											(9... Nd5 {D44 Queen's Gambit declined Semi-Slav, Anti-Meran, Alatortsev system})
										10. Bxg5 Nbd7 11. g3
											(11. Qf3 {D44 Queen's Gambit declined Semi-Slav, Anti-Meran, Szabo variation})
										{D44 Queen's Gambit declined Semi-Slav, Anti-Meran, Lilienthal variation})
									9... gxh4 10. Ne5 {D44 Queen's Gambit declined Semi-Slav, Ekstrom variation})
								6. Bxf6 Qxf6 7. Qb3 {D43 Queen's Gambit declined Semi-Slav, Hastings variation})
							5. Bf4 {D37 Queen's Gambit declined, Classical variation (5.Bf4)})
							(4. Bg5 {D50 Queen's Gambit declined, 4.Bg5} 4... c5
								(4... Nbd7 {D51 Queen's Gambit declined, 4.Bg5 Nbd7} 5. Nf3
									(5. e3 {D51 Queen's Gambit declined} 5... Bb4
										(5... c6 {D51 Queen's Gambit declined, 5...c6} 6. a3
											(6. Nf3 {D52 Queen's Gambit declined} 6... Qa5 {D52 Queen's Gambit declined, Cambridge Springs defense} 7. Nd2
												(7. Bxf6 {D52 Queen's Gambit declined, Cambridge Springs defense, Capablanca variation})
												(7. cxd5 {D52 Queen's Gambit declined, Cambridge Springs defense, 7.cd} 7... Nxd5 {D52 Queen's Gambit declined, Cambridge Springs defense, Yugoslav variation})
											7... Bb4
												(7... dxc4 {D52 Queen's Gambit declined, Cambridge Springs defense, Rubinstein variation})
											8. Qc2 {D52 Queen's Gambit declined, Cambridge Springs defense, Bogoljubow variation} 8... O-O 9. Bh4 {D52 Queen's Gambit declined, Cambridge Springs defense, Argentine variation})
										{D51 Queen's Gambit declined, Capablanca anti-Cambridge Springs variation})
									{D51 Queen's Gambit declined, Manhattan variation})
								5... c6 6. Rc1
									(6. e4 {D51 Queen's Gambit declined, Alekhine variation})
								6... Qa5 7. Bd2 {D51 Queen's Gambit declined, Rochlin variation})
								(4... Be7 {D53 Queen's Gambit declined, 4.Bg5 Be7} 5. e3 Ne4
									(5... O-O {D53 Queen's Gambit declined, 4.Bg5 Be7, 5.e3 O-O} 6. Rc1
										(6. Nf3 {D55 Queen's Gambit declined, 6.Nf3} 6... b6
											(6... h6 {D55 Queen's Gambit declined, Neo-Orthodox variation} 7. Bxf6
												(7. Bh4 {D55 Queen's Gambit declined, Neo-Orthodox variation, 7.Bh4} 7... Ne4
													(7... b6 {D58 Queen's Gambit declined, Tartakower (Makagonov-Bondarevsky) system} 8. cxd5 Nxd5 {D59 Queen's Gambit declined, Tartakower (Makagonov-Bondarevsky) system, 8.cd Nxd5} 9. Bxe7 Qxe7 10. Nxd5 exd5 11. Rc1 Be6 {D59 Queen's Gambit declined, Tartakower variation})
												{D56 Queen's Gambit declined, Lasker defense} 8. Bxe7 Qxe7 9. Qc2
													(9. cxd5 Nxc3 10. bxc3 {D57 Queen's Gambit declined, Lasker defense, Main line} 10... exd5 11. Qb3 Qd6 {D57 Queen's Gambit declined, Lasker defense, Bernstein variation})
												{D56 Queen's Gambit declined, Lasker defense, Teichmann variation} 9... Nf6 10. Bd3 dxc4 11. Bxc4 c5 12. O-O Nc6 13. Rfd1 Bd7 {D56 Queen's Gambit declined, Lasker defense, Russian variation})
											{D55 Queen's Gambit declined, Neo-Orthodox variation, 7.Bxf6} 7... Bxf6 8. Rc1 c6 9. Bd3 Nd7 10. O-O dxc4 11. Bxc4 {D55 Queen's Gambit declined, Petrosian variation})
											(6... Nbd7 {D60 Queen's Gambit declined, Orthodox defense} 7. Bd3
												(7. Qb3 {D60 Queen's Gambit declined, Orthodox defense, Rauzer variation})
												(7. Qc2 {D61 Queen's Gambit declined, Orthodox defense, Rubinstein variation} 7... c5 8. cxd5 {D62 Queen's Gambit declined, Orthodox defense, 7.Qc2 c5, 8.cd (Rubinstein)})
												(7. Rc1 {D63 Queen's Gambit declined, Orthodox defense, 7.Rc1} 7... b6
													(7... a6 {D63 Queen's Gambit declined, Orthodox defense, Swiss (Henneberger) variation} 8. cxd5 {D63 Queen's Gambit declined, Orthodox defense, Swiss, Karlsbad variation})
													(7... c6 {D63 Queen's Gambit declined, Orthodox defense} 8. Qc2
														(8. Bd3 {D66 Queen's Gambit declined, Orthodox defense, Bd3 line} 8... dxc4 9. Bxc4 b5
															(9... Nd5 {D67 Queen's Gambit declined, Orthodox defense, Bd3 line, Capablanca freeing manoevre} 10. h4
																(10. Bxe7 Qxe7 {D67 Queen's Gambit declined, Orthodox defense, Bd3 line} 11. Ne4
																	(11. O-O {D67 Queen's Gambit declined, Orthodox defense, Bd3 line, 11.O-O} 11... Nxc3 12. Rxc3 e5 {D68 Queen's Gambit declined, Orthodox defense, Classical variation} 13. Qb1
																		(13. Qc2 {D68 Queen's Gambit declined, Orthodox defense, Classical, 13.d1c2 (Vidmar)})
																		(13. dxe5 Nxe5 14. Nxe5 Qxe5 {D69 Queen's Gambit declined, Orthodox defense, Classical, 13.de})
																	{D68 Queen's Gambit declined, Orthodox defense, Classical, 13.d1b1 (Maroczy)})
																{D67 Queen's Gambit declined, Orthodox defense, Bd3 line, Alekhine variation})
															{D67 Queen's Gambit declined, Orthodox defense, Bd3 line, Janowski variation})
														{D66 Queen's Gambit declined, Orthodox defense, Bd3 line, Fianchetto variation})
													{D64 Queen's Gambit declined, Orthodox defense, Rubinstein attack (with Rc1)} 8... Ne4
														(8... a6 {D64 Queen's Gambit declined, Orthodox defense, Rubinstein attack, Karlsbad variation} 9. a3
															(9. cxd5 {D65 Queen's Gambit declined, Orthodox defense, Rubinstein attack, Main line})
														{D64 Queen's Gambit declined, Orthodox defense, Rubinstein attack, Gruenfeld variation})
													{D64 Queen's Gambit declined, Orthodox defense, Rubinstein attack, Wolf variation})
												8. cxd5 exd5 9. Bd3
													(9. Bb5 {D63 Queen's Gambit declined, Orthodox defense, Capablanca variation})
												{D63 Queen's Gambit declined, Orthodox defense, Pillsbury attack})
											{D60 Queen's Gambit declined, Orthodox defense, Botvinnik variation})
										7. Bd3 Bb7 8. cxd5 exd5 9. Ne5 {D55 Queen's Gambit declined, Pillsbury attack})
									{D54 Queen's Gambit declined, Anti-neo-Orthodox variation})
								{D53 Queen's Gambit declined, Lasker variation})
							{D50 Queen's Gambit declined, Been-Koomen variation} 5. Nf3
								(5. cxd5 {D50 Queen's Gambit declined, Semi-Tarrasch} 5... Qb6 {D50 Queen's Gambit declined, Canal (Venice) variation})
							5... cxd4 6. Nxd4
								(6. Qxd4 {D50 Queen's Gambit declined, Semi-Tarrasch, Primitive Pillsbury variation})
							6... e5 7. Ndb5 a6 8. Qa4 {D50 Queen's Gambit declined, Semi-Tarrasch, Krause variation})
						{D35 Queen's Gambit declined, Harrwitz attack})
					{D31 Queen's Gambit declined, Janowski variation})
				3... Nf6 4. e3
					(4. Bg5 {D30 Queen's Gambit declined} 4... Nbd7
						(4... Bb4+ {D30 Queen's Gambit declined, Vienna variation})
						(4... h6 {D30 Queen's Gambit declined, Capablanca-Duras variation} 5. Bxf6 Qxf6 6. Nc3 c6 7. Qb3 {D30 Queen's Gambit declined, Hastings variation})
					5. e3 c6 6. Nbd2 {D30 Queen's Gambit declined, Capablanca variation})
				4... c6 5. Nbd2 {D30 Queen's Gambit declined Slav} 5... Ne4
					(5... Nbd7 {D30 Queen's Gambit declined Slav} 6. Bd3 c5 {D30 Queen's Gambit declined Slav, Semmering variation})
					(5... g6 {D30 Queen's Gambit declined, Spielmann variation})
				6. Bd3 f5 {D30 Queen's Gambit declined, Stonewall variation})
			{D06 Queen's Gambit declined, Grau (Sahovic) defense})
		{D00 Queen's pawn, Mason variation} 2... c5 {D00 Queen's pawn, Mason variation, Steinitz counter-gambit})
	{A40 Queen's pawn, Lundin (Kevitz-Mikenas) defense})
	(1. e4 {B00 King's pawn Opening} 1... g6
		(1... Nh6 2. d4 g6 3. c4 f6 {B00 Hippopotamus defense})
		(1... a5 {B00 Corn stalk defense})
		(1... Na6 {B00 Lemming defense})
		(1... f5 {B00 Fred})
		(1... f6 {B00 Barnes defense} 2. d4 Kf7 {B00 Fried fox defense})
		(1... h6 {B00 Carr's defense})
		(1... g5 {B00 Reversed Grob (Borg/Basman defense/macho Grob)})
		(1... a6 {B00 St. George (Baker) defense})
		(1... b6 {B00 Owen defense} 2. d4 Ba6 {B00 Guatemala defense})
		(1... Nc6 {B00 King's pawn, Nimzovich defense} 2. b4
			(2. Nf3 {B00 King's pawn, Nimzovich defense} 2... f5 {B00 King's pawn, Colorado counter})
			(2. d4 {B00 King's pawn, Nimzovich defense} 2... d5
				(2... f6 {B00 King's pawn, Neo-Mongoloid defense})
			3. exd5
				(3. Nc3 {B00 King's pawn, Nimzovich defense, Bogolyubov variation})
			3... Qxd5 4. Nc3 {B00 King's pawn, Nimzovich defense, Marshall gambit})
		2... Nxb4 3. c3 Nc6 4. d4 {B00 King's pawn, Nimzovich defense, Wheeler gambit})
		(1... d5 {B01 Scandinavian (centre counter) defense} 2. exd5 Qxd5
			(2... Nf6 {B01 Scandinavian defense} 3. c4
				(3. d4 {B01 Scandinavian defense} 3... Nxd5
					(3... g6 {B01 Scandinavian, Richter variation})
				{B01 Scandinavian, Marshall variation} 4. c4 Nb4 {B01 Scandinavian, Kiel variation})
			3... e6
				(3... c6 {B01 Scandinavian gambit})
			{B01 Scandinavian, Icelandic gambit})
		3. Nc3 Qa5
			(3... Qd6 {B01 Scandinavian, Pytel-Wade variation})
		4. d4
			(4. b4 {B01 Scandinavian, Mieses-Kotrvc gambit})
		4... Nf6
			(4... e5 {B01 Scandinavian, Anderssen counter-attack} 5. dxe5
				(5. Nf3 {B01 Scandinavian, Anderssen counter-attack, Goteborg system} 5... Bg4 {B01 Scandinavian, Anderssen counter-attack, Collijn variation})
			5... Bb4 6. Bd2 Nc6 7. Nf3 {B01 Scandinavian, Anderssen counter-attack Orthodox attack})
		5. Nf3 Bg4
			(5... Bf5 {B01 Scandinavian defense} 6. Ne5 c6 7. g4 {B01 Scandinavian defense, Gruenfeld variation})
		6. h3 {B01 Scandinavian defense, Lasker variation})
		(1... Nf6 {B02 Alekhine's defense} 2. Nc3
			(2. d3 {B02 Alekhine's defense, Maroczy variation})
			(2. Bc4 {B02 Alekhine's defense, Krejcik variation})
			(2. e5 Ne4
				(2... Ng8 {B02 Alekhine's defense, Brooklyn defense})
				(2... Nd5 {B02 Alekhine's defense} 3. Bc4
					(3. Nc3 {B02 Alekhine's defense, Saemisch attack})
					(3. b3 {B02 Alekhine's defense, Welling variation})
					(3. c4 {B02 Alekhine's defense} 3... Nb6 4. b3
						(4. c5 {B02 Alekhine's defense, Two pawns' (Lasker's) attack} 4... Nd5 5. Bc4 e6 6. Nc3 d6 {B02 Alekhine's defense, Two pawns' attack, Mikenas variation})
					{B02 Alekhine's defense, Steiner variation})
					(3. d4 {B03 Alekhine's defense} 3... b5
						(3... d6 {B03 Alekhine's defense} 4. Bc4
							(4. c4 {B03 Alekhine's defense} 4... Nb6 5. exd6
								(5. f4 {B03 Alekhine's defense, Four pawns attack} 5... dxe5
									(5... g5 {B03 Alekhine's defense, Four pawns attack, Planinc variation})
									(5... g6 {B03 Alekhine's defense, Four pawns attack, Fianchetto variation})
									(5... Bf5 {B03 Alekhine's defense, Four pawns attack, Trifunovic variation})
								6. fxe5 Bf5
									(6... Nc6 {B03 Alekhine's defense, Four pawns attack, 6...Nc6} 7. Nf3
										(7. Be3 {B03 Alekhine's defense, Four pawns attack, 7.Be3} 7... Bf5 8. Nc3 e6 9. Nf3 Qd7 10. Be2 O-O-O 11. O-O Be7 {B03 Alekhine's defense, Four pawns attack, Tartakower variation})
									7... Bg4 8. e6 fxe6 9. c5 {B03 Alekhine's defense, Four pawns attack, Ilyin-Genevsky var.})
								7. Nc3 e6 8. Nf3 Be7 9. Be2 O-O 10. O-O f6 {B03 Alekhine's defense, Four pawns attack, Korchnoi variation})
							{B03 Alekhine's defense, Exchange variation} 5... cxd6 6. Nf3 g6 7. Be2 Bg7 8. O-O O-O 9. h3 Nc6 10. Nc3 Bf5 11. Bf4 {B03 Alekhine's defense, Exchange, Karpov variation})
							(4. Nf3 {B04 Alekhine's defense, Modern variation} 4... dxe5
								(4... Nb6 {B04 Alekhine's defense, Modern, Schmid variation})
								(4... g6 {B04 Alekhine's defense, Modern, Fianchetto variation} 5. Bc4 Nb6 6. Bb3 Bg7 7. a4 {B04 Alekhine's defense, Modern, Keres variation})
								(4... Bg4 {B05 Alekhine's defense, Modern variation, 4...Bg4} 5. Be2
									(5. h3 {B05 Alekhine's defense, Modern, Panov variation})
									(5. c4 {B05 Alekhine's defense, Modern, Alekhine variation} 5... Nb6 6. d5 {B05 Alekhine's defense, Modern, Vitolins attack})
								5... c6 {B05 Alekhine's defense, Modern, Flohr variation})
							{B04 Alekhine's defense, Modern, Larsen variation})
						{B03 Alekhine's defense, Balogh variation})
					{B03 Alekhine's defense, O'Sullivan gambit})
				3... Nb6 4. Bb3 c5 5. d3 {B02 Alekhine's defense, Kmoch variation})
			{B02 Alekhine's defense, Mokele Mbembe (Buecker) variation})
		2... d5 {B02 Alekhine's defense, Scandinavian variation} 3. e5 Nfd7 4. e6 {B02 Alekhine's defense, Spielmann variation})
		(1... d6 2. d4 Nf6 3. Nc3 {B07 Pirc defense} 3... c6
			(3... g6 {B07 Pirc defense} 4. Be3
				(4. g3 {B07 Pirc, Sveshnikov system})
				(4. Bc4 {B07 Pirc, Holmov system})
				(4. Bg5 {B07 Pirc, Byrne variation})
				(4. Be2 {B07 Pirc defense} 4... Bg7 5. g4
					(5. h4 {B07 Pirc, bayonet (Mariotti) attack})
				{B07 Pirc, Chinese variation})
				(4. Nf3 {B08 Pirc, Classical (Two knights) system} 4... Bg7 {B08 Pirc, Classical (Two knights) system} 5. h3
					(5. Be2 {B08 Pirc, Classical system, 5.Be2})
				{B08 Pirc, Classical, h3 system})
				(4. f4 {B09 Pirc, Austrian attack} 4... Bg7 5. Nf3
					(5. Bc4 {B09 Pirc, Austrian attack, Ljubojevic variation})
				5... O-O
					(5... c5 {B09 Pirc, Austrian attack, Dragon formation})
				{B09 Pirc, Austrian attack} 6. e5
					(6. Be3 {B09 Pirc, Austrian attack, 6.Be3})
					(6. Bd3 {B09 Pirc, Austrian attack, 6.Bd3})
				{B09 Pirc, Austrian attack, 6.e5})
			4... c6 5. Qd2 {B07 Pirc, 150 attack})
		{B07 Pirc, Ufimtsev-Pytel variation})
		(1... c6 {B10 Caro-Kann defense} 2. Bc4
			(2. c4 {B10 Caro-Kann, Anti-Caro-Kann defense} 2... d5 {B10 Caro-Kann, Anti-anti-Caro-Kann defense})
			(2. d3 {B10 Caro-Kann, Closed (Breyer) variation})
			(2. Nc3 {B10 Caro-Kann defense} 2... d5 3. Qf3
				(3. Nf3 {B10 Caro-Kann, Two knights variation} 3... Bg4 {B11 Caro-Kann, Two knights, 3...Bg4})
			{B10 Caro-Kann, GOldman (Spielmann) variation})
			(2. d4 {B12 Caro-Kann defense} 2... Na6
				(2... Nf6 {B12 Caro-Masi defense})
				(2... d5 {B12 Caro-Kann defense} 3. f3
					(3. Nd2 {B12 Caro-Kann, 3.Nd2} 3... Qb6 {B12 Caro-Kann, Edinburgh variation})
					(3. e5 {B12 Caro-Kann, Advance variation} 3... Bf5 4. c3 e6 5. Be2 {B12 Caro-Kann, Advance, Short variation})
					(3. exd5 {B13 Caro-Kann, Exchange variation} 3... cxd5 4. Bd3
						(4. c4 {B13 Caro-Kann, Panov-Botvinnik attack} 4... Nf6 5. c5
							(5. Nc3 {B13 Caro-Kann, Panov-Botvinnik attack} 5... Nc6
								(5... e6 {B14 Caro-Kann, Panov-Botvinnik attack, 5...e6})
								(5... g6 {B14 Caro-Kann, Panov-Botvinnik attack, 5...g6})
							6. Bg5 dxc4
								(6... e6 {B13 Caro-Kann, Panov-Botvinnik, normal variation})
								(6... Qa5 {B13 Caro-Kann, Panov-Botvinnik, Czerniak variation})
								(6... Qb6 {B13 Caro-Kann, Panov-Botvinnik, Reifir (Spielmann) variation})
							7. d5 Na5 {B13 Caro-Kann, Panov-Botvinnik, Herzog defense})
						{B13 Caro-Kann, Panov-Botvinnik, Gunderam attack})
					4... Nc6 5. c3 Nf6 6. Bf4 {B13 Caro-Kann, Exchange, Rubinstein variation})
					(3. Nc3 {B15 Caro-Kann defense} 3... b5
						(3... g6 {B15 Caro-Kann, Gurgenidze system})
						(3... dxe4 4. f3
							(4. Nxe4 {B15 Caro-Kann defense} 4... Nf6
								(4... Nd7 {B17 Caro-Kann, Steinitz variation})
								(4... Bf5 {B18 Caro-Kann, Classical variation} 5. Ng3 Bg6 6. Nh3
									(6. f4 {B18 Caro-Kann, Classical, Maroczy attack})
									(6. h4 {B18 Caro-Kann, Classical, 6.h4} 6... h6 7. Nf3 Nd7 {B19 Caro-Kann, Classical, 7...Nd7} 8. h5 {B19 Caro-Kann, Classical, Spassky variation})
								{B18 Caro-Kann, Classical, Flohr variation})
							5. Bd3
								(5. Nxf6+ exf6
									(5... gxf6 {B16 Caro-Kann, Bronstein-Larsen variation})
								{B15 Caro-Kann, Tartakower (Nimzovich) variation} 6. Bc4 {B15 Caro-Kann, Forgacs variation})
							{B15 Caro-Kann, Alekhine gambit})
						{B15 Caro-Kann, Rasa-Studier gambit})
					{B15 Caro-Kann, Gurgenidze counter-attack})
				{B12 Caro-Kann, Tartakower (fantasy) variation})
			3. Nc3 Nc7 {B12 de Bruycker defense})
		{B10 Caro-Kann, Hillbilly attack})
		(1... c5 {B20 Sicilian defense} 2. c4
			(2. g3 {B20 Sicilian, Steinitz variation})
			(2. b4 {B20 Sicilian, wing gambit} 2... cxb4 3. c4
				(3. a3 {B20 Sicilian, wing gambit, Marshall variation} 3... d5
					(3... bxa3 {B20 Sicilian, wing gambit, Carlsbad variation})
				4. exd5 Qxd5 5. Bb2 {B20 Sicilian, wing gambit, Marienbad variation})
			{B20 Sicilian, wing gambit, Santasiere variation})
			(2. Ne2 {B20 Sicilian, Keres variation (2.Ne2)})
			(2. f4 {B21 Sicilian, Grand Prix attack})
			(2. d4 {B21 Sicilian, Smith-Morra gambit} 2... cxd4 3. Nf3
				(3. c3 {B21 Sicilian, Smith-Morra gambit} 3... dxc3 4. Nxc3 Nc6 5. Nf3 d6 6. Bc4 e6 7. O-O a6 8. Qe2 b5 9. Bb3 Ra7 {B21 Sicilian, Smith-Morra gambit, Chicago defense})
			3... e5 4. c3 {B21 Sicilian, Andreaschek gambit})
			(2. c3 {B22 Sicilian, Alapin's variation (2.c3)} 2... Nf6 3. e5 Nd5 4. Nf3 Nc6 5. Na3 {B22 Sicilian, 2.c3, Heidenfeld variation})
			(2. Nc3 {B23 Sicilian, Closed} 2... e6
				(2... Nc6 {B23 Sicilian, Closed, 2...Nc6} 3. Nge2
					(3. f4 {B23 Sicilian, Grand Prix attack} 3... g6 4. Nf3 Bg7 5. Bc4 e6 6. f5 {B23 Sicilian, Grand Prix attack, Schofman variation})
					(3. g3 {B24 Sicilian, Closed} 3... g6 4. Bg2 Bg7 5. d3 e6
						(5... d6 {B25 Sicilian, Closed} 6. Nge2
							(6. f4 {B25 Sicilian, Closed, 6.f4} 6... e5 {B25 Sicilian, Closed, 6.f4 e5 (Botvinnik)})
							(6. Be3 {B26 Sicilian, Closed, 6.Be3})
						6... e5 {B25 Sicilian, Closed, 6.Ne2 e5 (Botvinnik)})
					6. Be3 Nd4 7. Nce2 {B24 Sicilian, Closed, Smyslov variation})
				{B23 Sicilian, chameleon variation})
			3. g3 d5 {B23 Sicilian, Closed, Korchnoi variation})
			(2. Nf3 {B27 Sicilian defense} 2... Qa5
				(2... Qc7 {B27 Sicilian, Quinteros variation})
				(2... b6 {B27 Sicilian, Katalimov variation})
				(2... g6 {B27 Sicilian, Hungarian variation} 3. c4 Bh6 {B27 Sicilian, Acton extension})
				(2... a6 {B28 Sicilian, O'Kelly variation})
				(2... Nf6 {B29 Sicilian, Nimzovich-Rubinstein variation} 3. e5 Nd5 4. Nc3 e6 5. Nxd5 exd5 6. d4 Nc6 {B29 Sicilian, Nimzovich-Rubinstein; Rubinstein counter-gambit})
				(2... Nc6 {B30 Sicilian defense} 3. Bb5
					(3. d4 {B32 Sicilian defense} 3... cxd4 4. Nxd4 Qc7
						(4... d5 {B32 Sicilian, Nimzovich variation})
						(4... e5 {B32 Sicilian, Labourdonnais-Loewenthal variation} 5. Nb5 d6 {B32 Sicilian, Labourdonnais-Loewenthal (Kalashnikov) variation})
						(4... Nf6 {B33 Sicilian defense} 5. Nc3 e5
							(5... d6 6. Be2 {B58 Sicilian, Classical} 6... e5 {B58 Sicilian, Boleslavsky variation} 7. Nxc6
								(7. Nb3 {B59 Sicilian, Boleslavsky variation, 7.Nb3})
							{B58 Sicilian, Boleslavsky, Louma variation})
						{B33 Sicilian, Pelikan (Lasker/Sveshnikov) variation} 6. Ndb5 d6 7. Bg5 a6 8. Na3 Be6
							(8... b5 {B33 Sicilian, Pelikan, Chelyabinsk variation} 9. Bxf6 gxf6 10. Nd5 f5 {B33 Sicilian, Sveshnikov variation})
						{B33 Sicilian, Pelikan, Bird variation})
						(4... g6 5. Nxc6
							(5. Nc3 {B34 Sicilian, Accelerated Fianchetto, Modern variation} 5... Bg7 6. Be3 Nf6 7. Bc4 {B35 Sicilian, Accelerated Fianchetto, Modern variation with Bc4})
							(5. c4 {B36 Sicilian, Accelerated Fianchetto, Maroczy bind} 5... Nf6
								(5... Bg7 {B37 Sicilian, Accelerated Fianchetto, Maroczy bind, 5...Bg7} 6. Nc2
									(6. Be3 {B38 Sicilian, Accelerated Fianchetto, Maroczy bind, 6.Be3} 6... Nf6 7. Nc3 Ng4 {B39 Sicilian, Accelerated Fianchetto, Breyer variation})
								6... d6 7. Be2 Nh6 {B37 Sicilian, Accelerated Fianchetto, Simagin variation})
							6. Nc3 Nxd4 7. Qxd4 d6 {B36 Sicilian, Accelerated Fianchetto, Gurgenidze variation})
						{B34 Sicilian, Accelerated Fianchetto, Exchange variation})
					{B32 Sicilian, Flohr variation})
				{B30 Sicilian, Nimzovich-Rossolimo attack (without ...d6)} 3... g6 {B31 Sicilian, Nimzovich-Rossolimo attack (with ...g6, without ...d6)} 4. O-O Bg7 5. Re1 e5 6. b4 {B31 Sicilian, Nimzovich-Rossolimo attack, Gurgenidze variation})
				(2... e6 {B40 Sicilian defense} 3. d4 d5
					(3... cxd4 {B40 Sicilian defense} 4. Nxd4 Nf6
						(4... a6 {B41 Sicilian, Kan variation} 5. c4
							(5. Bd3 {B42 Sicilian, Kan, 5.Bd3} 5... Nf6
								(5... Bc5 {B42 Sicilian, Kan, Polugaievsky variation})
								(5... g6 {B42 Sicilian, Kan, Swiss cheese variation})
							6. O-O d6 7. c4 g6 {B42 Sicilian, Kan, Gipslis variation})
							(5. Nc3 {B43 Sicilian, Kan, 5.Nc3})
						{B41 Sicilian, Kan, Maroczy bind (Reti variation)} 5... Nf6 6. Nc3 Bb4 7. Bd3 Nc6 8. Bc2 {B41 Sicilian, Kan, Maroczy bind - Bronstein variation})
						(4... Nc6 {B44 Sicilian defense} 5. Nb5
							(5. Nc3 {B45 Sicilian, Taimanov variation} 5... Nf6
								(5... a6 {B46 Sicilian, Taimanov variation})
								(5... Qc7 {B47 Sicilian, Taimanov (Bastrikov) variation} 6. Be3 {B48 Sicilian, Taimanov variation} 6... a6 7. Be2 {B49 Sicilian, Taimanov variation})
							6. Ndb5 Bb4 7. Nd6+ {B45 Sicilian, Taimanov, American attack})
						{B44 Sicilian, Szen (`anti-Taimanov') variation} 5... d6 6. c4 Nf6 7. N1c3 a6 8. Na3 Be7
							(8... d5 {B44 Sicilian, Szen variation, Dely-Kasparov gambit})
						9. Be2 O-O 10. O-O b6 {B44 Sicilian, Szen, hedgehog variation})
					{B40 Sicilian, Anderssen variation} 5. Nc3 Bb4 {B40 Sicilian, Pin variation (Sicilian counter-attack)} 6. Bd3
						(6. e5 {B40 Sicilian, Pin, Koch variation})
					6... e5 {B40 Sicilian, Pin, Jaffe variation})
				{B40 Sicilian, Marshall variation})
				(2... d6 {B50 Sicilian} 3. b4
					(3. Bb5+ {B51 Sicilian, Canal-Sokolsky (Nimzovich-Rossolimo, Moscow) attack} 3... Bd7 {B52 Sicilian, Canal-Sokolsky attack, 3...Bd7} 4. Bxd7+ Qxd7 5. O-O
						(5. c4 {B52 Sicilian, Canal-Sokolsky attack, Sokolsky variation})
					5... Nc6 6. c3 Nf6 7. d4 {B52 Sicilian, Canal-Sokolsky attack, Bronstein gambit})
					(3. d4 cxd4 4. Qxd4
						(4. Nxd4 {B54 Sicilian} 4... Nf6 5. f3
							(5. Nc3 {B56 Sicilian} 5... e5
								(5... Nc6 {B56 Sicilian} 6. Bc4
									(6. Bg5 {B60 Sicilian, Richter-Rauzer} 6... g6
										(6... Bd7 {B60 Sicilian, Richter-Rauzer, Larsen variation} 7. Qd2 {B61 Sicilian, Richter-Rauzer, Larsen variation, 7.Qd2})
										(6... e6 {B62 Sicilian, Richter-Rauzer, 6...e6} 7. Nb3
											(7. Bb5 {B62 Sicilian, Richter-Rauzer, Margate (Alekhine) variation})
											(7. Nxc6 {B62 Sicilian, Richter-Rauzer, Richter attack})
											(7. Qd3 {B62 Sicilian, Richter-Rauzer, Keres variation})
											(7. Qd2 {B63 Sicilian, Richter-Rauzer, Rauzer attack} 7... Be7
												(7... a6 {B66 Sicilian, Richter-Rauzer, Rauzer attack, 7...a6} 8. O-O-O Bd7 {B67 Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defense, 8...Bd7} 9. f4 Be7 {B68 Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defense, 9...Be7} 10. Nf3 b5 11. Bxf6 {B69 Sicilian, Richter-Rauzer, Rauzer attack, 7...a6 defense, 11.Bxf6})
											{B63 Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7} 8. O-O-O O-O 9. f4 {B64 Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defense, 9.f4} 9... e5
												(9... Nxd4 {B65 Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defense, 9...Nxd4} 10. Qxd4 {B65 Sicilian, Richter-Rauzer, Rauzer attack, 7...Be7 defense, 9...Nxd4})
											{B64 Sicilian, Richter-Rauzer, Rauzer attack, Geller variation})
										{B62 Sicilian, Richter-Rauzer, Podvebrady variation})
									{B60 Sicilian, Richter-Rauzer, Bondarevsky variation})
								{B57 Sicilian, Sozin, not Scheveningen} 6... g6
									(6... Qb6 {B57 Sicilian, Sozin, Benko variation})
								7. Nxc6 bxc6 8. e5 {B57 Sicilian, Magnus Smith trap})
								(5... g6 {B70 Sicilian, Dragon variation} 6. f4
									(6. Be3 {B72 Sicilian, Dragon, 6.Be3} 6... Bg7 7. Be2
										(7. f3 {B75 Sicilian, Dragon, Yugoslav attack} 7... O-O {B76 Sicilian, Dragon, Yugoslav attack, 7...O-O} 8. Qd2 Nc6 9. O-O-O
											(9. Bc4 {B77 Sicilian, Dragon, Yugoslav attack, 9.Bc4} 9... a5
												(9... Bd7 {B77 Sicilian, Dragon, Yugoslav attack, 9...Bd7} 10. O-O-O {B78 Sicilian, Dragon, Yugoslav attack, 10.O-O-O} 10... Qa5 11. Bb3 Rfc8 12. h4 {B79 Sicilian, Dragon, Yugoslav attack, 12.h4})
											{B77 Sicilian, Dragon, Yugoslav attack, Byrne variation})
										{B76 Sicilian, Dragon, Yugoslav attack, Rauser variation})
									{B72 Sicilian, Dragon, Classical attack} 7... Nc6 8. Qd2
										(8. Nb3 {B72 Sicilian, Dragon, Classical, Nottingham variation})
										(8. O-O {B73 Sicilian, Dragon, Classical, 8.O-O} 8... O-O 9. f4
											(9. Qd2 {B73 Sicilian, Dragon, Classical, Richter variation})
											(9. Nb3 {B74 Sicilian, Dragon, Classical, 9.Nb3} 9... Be6
												(9... a5 {B74 Sicilian, Dragon, Classical, Alekhine variation})
											10. f4 Na5
												(10... Qc8 {B74 Sicilian, Dragon, Classical, Reti-Tartakower variation})
											11. f5 Bc4 12. Nxa5
												(12. Bd3 {B74 Sicilian, Dragon, Classical, Spielmann variation} 12... Bxd3 13. cxd3 d5 {B74 Sicilian, Dragon, Classical, Bernard defense})
											12... Bxe2 13. Qxe2 Qxa5 14. g4 {B74 Sicilian, Dragon, Classical, Stockholm attack})
										9... Qb6 10. e5 {B73 Sicilian, Dragon, Classical, Zollner gambit})
									{B72 Sicilian, Dragon, Classical, Amsterdam variation} 8... O-O 9. O-O-O {B72 Sicilian, Dragon, Classical, Grigoriev variation})
								{B71 Sicilian, Dragon, Levenfish variation} 6... Nbd7 {B71 Sicilian, Dragon, Levenfish; Flohr variation})
								(5... e6 {B80 Sicilian, Scheveningen variation} 6. Be3
									(6. Bb5+ {B80 Sicilian, Scheveningen, Vitolins variation})
									(6. g3 {B80 Sicilian, Scheveningen, Fianchetto variation})
									(6. g4 {B81 Sicilian, Scheveningen, Keres attack})
									(6. f4 {B82 Sicilian, Scheveningen, 6.f4} 6... Nc6 7. Be3 Be7 8. Qf3 {B82 Sicilian, Scheveningen, Tal variation})
									(6. Be2 {B83 Sicilian, Scheveningen, 6.Be2} 6... Nc6
										(6... a6 {B84 Sicilian, Scheveningen (Paulsen), Classical variation} 7. O-O Nbd7
											(7... Qc7 {B84 Sicilian, Scheveningen (Paulsen), Classical variation} 8. f4 Nc6 {B85 Sicilian, Scheveningen, Classical variation with ...Qc7 and ...Nc6} 9. Kh1
												(9. Be3 {B85 Sicilian, Scheveningen, Classical} 9... Be7 10. Qe1 O-O {B85 Sicilian, Scheveningen, Classical Main line})
											9... Be7 10. a4 {B85 Sicilian, Scheveningen, Classical, Maroczy system})
										{B84 Sicilian, Scheveningen, Classical, Nd7 system})
									{B83 Sicilian, Modern Scheveningen} 7. O-O Be7 8. Be3 O-O 9. f4 {B83 Sicilian, Modern Scheveningen, Main line} 9... Bd7 10. Nb3 {B83 Sicilian, Modern Scheveningen, Main line with Nb3})
									(6. Bc4 {B86 Sicilian, Sozin attack} 6... a6
										(6... Nc6 {B88 Sicilian, Sozin, Leonhardt variation} 7. Bb3
											(7. Be3 {B89 Sicilian, Sozin, 7.Be3} 7... Be7 8. Qe2 {B89 Sicilian, Velimirovic attack})
										7... Be7 8. Be3 O-O 9. f4 {B88 Sicilian, Sozin, Fischer variation})
									7. Bb3 b5 {B87 Sicilian, Sozin with ...a6 and ...b5})
								6... a6 7. Qd2 {B80 Sicilian, Scheveningen, English variation})
								(5... a6 {B90 Sicilian, Najdorf} 6. h3
									(6. Bc4 {B90 Sicilian, Najdorf, Lipnitzky attack})
									(6. Be3 {B90 Sicilian, Najdorf, Byrne (English) attack})
									(6. g3 {B91 Sicilian, Najdorf, Zagreb (Fianchetto) variation})
									(6. Be2 {B92 Sicilian, Najdorf, Opovcensky variation})
									(6. f4 {B93 Sicilian, Najdorf, 6.f4})
									(6. Bg5 {B94 Sicilian, Najdorf, 6.Bg5} 6... Nbd7
										(6... e6 {B95 Sicilian, Najdorf, 6...e6} 7. f4 {B96 Sicilian, Najdorf, 7.f4} 7... b5
											(7... Qb6 {B97 Sicilian, Najdorf, 7...Qb6} 8. Qd2 Qxb2 9. Rb1 Qa3 {B97 Sicilian, Najdorf, Poisoned pawn variation})
											(7... Be7 {B98 Sicilian, Najdorf, 7...Be7} 8. Qf3 h6
												(8... Qc7 {B98 Sicilian, Najdorf variation} 9. O-O-O Nbd7 {B99 Sicilian, Najdorf, 7...Be7 Main line})
											9. Bh4 Qc7
												(9... g5 {B98 Sicilian, Najdorf, Goteborg (Argentine) variation})
											{B98 Sicilian, Najdorf, Browne variation})
										{B96 Sicilian, Najdorf, Polugayevsky variation} 8. e5 dxe5 9. fxe5 Qc7 10. Qe2 {B96 Sicilian, Najdorf, Polugayevsky, Simagin variation})
									7. Bc4 Qa5 8. Qd2 e6 9. O-O-O b5 10. Bb3 Bb7 11. Rhe1 Nc5 12. e5 {B94 Sicilian, Najdorf, Ivkov variation})
								{B90 Sicilian, Najdorf, Adams attack})
							6. Bb5+ {B56 Sicilian, Venice attack})
						{B54 Sicilian, Prins (Moscow) variation} 5... e5 6. Bb5+ {B55 Sicilian, Prins variation, Venice attack})
					{B53 Sicilian, Chekhover variation} 4... Nc6 5. Bb5 Qd7 {B53 Sicilian, Chekhover, Zaitsev variation})
				{B50 Sicilian, wing gambit deferred})
			{B27 Sicilian, Stiletto (Althouse) variation})
		2... d6 3. Nc3 Nc6 4. g3 h5 {B20 Sicilian, Gloria variation})
		(1... e6 {C00 French defense} 2. c4
			(2. b3 {C00 French, Reti (Spielmann) variation})
			(2. e5 {C00 French, Steinitz attack})
			(2. f4 {C00 French, Labourdonnais variation})
			(2. Nf3 {C00 French defense} 2... d5 3. e5 c5 4. b4 {C00 French, Wing gambit})
			(2. Nc3 {C00 French defense} 2... d5 3. f4
				(3. Nf3 {C00 French, Two knights variation})
			{C00 French, Pelikan variation})
			(2. Qe2 {C00 French, Chigorin variation})
			(2. d3 {C00 French, King's Indian attack} 2... d5 3. Nd2 Nf6 4. Ngf3 Nc6 5. Be2 {C00 French, Reversed Philidor formation})
			(2. d4 {C00 French defense} 2... d6
				(2... a6 {C00 St. George defense})
				(2... d5 {C00 French defense} 3. Bd3
					(3. Be3 {C00 French, Alapin variation})
					(3. exd5 {C01 French, Exchange variation} 3... exd5 4. Nc3 Nf6 5. Bg5 {C01 French, Exchange, Svenonius variation} 5... Nc6 {C01 French, Exchange, Bogolyubov variation})
					(3. e5 {C02 French, Advance variation} 3... c5 4. dxc5
						(4. Qg4 {C02 French, Advance, Nimzovich variation})
						(4. Nf3 {C02 French, Advance, Nimzovich system})
						(4. c3 {C02 French, Advance variation} 4... Qb6
							(4... Nc6 {C02 French, Advance variation} 5. Nf3 {C02 French, Advance, Paulsen attack} 5... Qb6
								(5... Bd7 {C02 French, Advance, Euwe variation})
							6. Bd3 {C02 French, Advance, Milner-Barry gambit})
						5. Nf3 Bd7 {C02 French, Advance, Wade variation})
					{C02 French, Advance, Steinitz variation})
					(3. Nd2 {C03 French, Tarrasch} 3... f5
						(3... Nc6 {C03 French, Tarrasch, Guimard variation} 4. Ngf3 Nf6 {C04 French, Tarrasch, Guimard Main line})
						(3... Nf6 {C05 French, Tarrasch, Closed variation} 4. e5 Nfd7 5. Bd3 c5 6. c3 b6
							(6... Nc6 {C05 French, Tarrasch, Closed variation} 7. Ne2 cxd4 8. cxd4 {C06 French, Tarrasch, Closed variation, Main line} 8... Nb6 {C06 French, Tarrasch, Leningrad variation})
						{C05 French, Tarrasch, Botvinnik variation})
						(3... c5 {C07 French, Tarrasch, Open variation} 4. exd5 Qxd5
							(4... exd5 {C08 French, Tarrasch, Open, 4.ed ed} 5. Ngf3 Nc6 {C09 French, Tarrasch, Open variation, Main line})
						5. Ngf3 cxd4 6. Bc4 Qd8 {C07 French, Tarrasch, Eliskases variation})
					{C03 French, Tarrasch, Haberditz variation})
					(3. Nc3 {C10 French, Paulsen variation} 3... c5
						(3... dxe4 {C10 French, Rubinstein variation} 4. Nxe4 Bd7
							(4... Nd7 {C10 French, Rubinstein variation} 5. Nf3 Ngf6 6. Nxf6+ Nxf6 7. Ne5 {C10 French, Rubinstein, Capablanca line})
							(4... Qd5 {C10 French, Frere (Becker) variation})
						5. Nf3 Bc6 {C10 French, Fort Knox variation})
						(3... Nf6 {C11 French defense} 4. Bd3
							(4. Be3 {C11 French, Henneberger variation})
							(4. e5 {C11 French, Steinitz variation} 4... Nfd7 5. f4
								(5. Qg4 {C11 French, Steinitz, Gledhill attack})
							5... c5 6. dxc5
								(6. Nf3 {C11 French, Steinitz variation} 6... Nc6 7. Be3 {C11 French, Steinitz, Boleslavsky variation})
							6... Bxc5
								(6... Nc6 {C11 French, Steinitz variation} 7. a3 Bxc5 8. Qg4 O-O 9. Nf3 f6 {C11 French, Steinitz, Brodsky-Jones variation})
							7. Qg4 {C11 French, Steinitz, Bradford attack})
							(4. Bg5 dxe4
								(4... Bb4 {C12 French, MacCutcheon variation} 5. exd5
									(5. e5 {C12 French, MacCutcheon, Advance variation} 5... h6 6. exf6
										(6. Bh4 {C12 French, MacCutcheon, Bernstein variation})
										(6. Be3 {C12 French, MacCutcheon, Janowski variation})
										(6. Bc1 {C12 French, MacCutcheon, Dr. Olland (Dutch) variation})
										(6. Bd2 Nfd7
											(6... Bxc3 {C12 French, MacCutcheon, Lasker variation} 7. bxc3 Ne4 8. Qg4 Kf8
												(8... g6 {C12 French, MacCutcheon, Lasker variation, 8...g6})
											9. Bc1 {C12 French, MacCutcheon, Duras variation})
										{C12 French, MacCutcheon, Tartakower variation})
									{C12 French, MacCutcheon, Chigorin variation} 6... hxg5 7. fxg7 Rg8 8. h4 gxh4 9. Qg4 {C12 French, MacCutcheon, Grigoriev variation})
								5... Qxd5 6. Bxf6 gxf6 7. Qd2 Qa5 {C12 French, MacCutcheon, Bogolyubov variation})
								(4... Be7 {C13 French, Classical} 5. Bxf6
									(5. e5 Ng8
										(5... Ne4 {C13 French, Classical, Tartakower variation})
										(5... Nfd7 6. h4
											(6. Bxe7 Qxe7 {C14 French, Classical variation} 7. Bd3
												(7. Qd2 {C14 French, Classical, Rubinstein variation})
												(7. Nb5 {C14 French, Classical, Alapin variation})
												(7. Qg4 {C14 French, Classical, Pollock variation})
												(7. f4 {C14 French, Classical, Steinitz variation} 7... O-O 8. Nf3 c5 9. Qd2 Nc6 10. O-O-O c4 {C14 French, Classical, Stahlberg variation})
											{C14 French, Classical, Tarrasch variation})
										{C13 French, Albin-Alekhine-Chatard attack} 6... a6
											(6... c5 {C13 French, Albin-Alekhine-Chatard attack, Breyer variation})
											(6... f6 {C13 French, Albin-Alekhine-Chatard attack, Teichmann variation})
											(6... O-O {C13 French, Albin-Alekhine-Chatard attack, Spielmann variation})
										{C13 French, Albin-Alekhine-Chatard attack, Maroczy variation})
									{C13 French, Classical, Vistaneckis (Nimzovich) variation} 6. Be3 b6 {C13 French, Classical, Frankfurt variation})
								{C13 French, Classical, Anderssen variation} 5... Bxf6 6. e5 Be7 7. Qg4 {C13 French, Classical, Anderssen-Richter variation})
							{C11 French, Burn variation})
						{C11 French, Swiss variation})
						(3... Bb4 {C15 French, Winawer (Nimzovich) variation} 4. Bd3
							(4. Bd2 {C15 French, Winawer, fingerslip variation})
							(4. Ne2 {C15 French, Winawer, Alekhine (Maroczy) gambit} 4... dxe4 5. a3 Bxc3+ {C15 French, Winawer, Alekhine gambit})
							(4. Ne2 dxe4 5. a3 Be7
								(5... Bxc3+ 6. Nxc3 Nc6 {C15 French, Winawer, Alekhine gambit, Kan variation})
							6. Nxe4 Nf6 7. N2g3 O-O 8. Be2 Nc6 {C15 French, Winawer, Alekhine gambit, Alatortsev variation})
							(4. e5 {C16 French, Winawer, Advance variation} 4... Qd7
								(4... c5 {C17 French, Winawer, Advance variation} 5. Bd2
									(5. Qg4 {C17 French, Winawer, Advance, Russian variation})
									(5. a3 {C17 French, Winawer, Advance, 5.a3} 5... cxd4
										(5... Bxc3+ 6. bxc3 {C18 French, Winawer, Advance variation} 6... Qc7
											(6... Ne7 {C19 French, Winawer, Advance, 6...Ne7} 7. a4
												(7. Nf3 {C19 French, Winawer, Advance, positional Main line})
												(7. Qg4 {C19 French, Winawer, Advance, poisoned pawn variation} 7... Qc7 8. Qxg7 Rg8 9. Qxh7 cxd4 10. Kd1
													(10. Ne2 {C19 French, Winawer, Advance, poisoned pawn, Konstantinopolsky variation})
												{C19 French, Winawer, Advance, poisoned pawn, Euwe-Gligoric variation})
											{C19 French, Winawer, Advance, Smyslov variation})
										{C18 French, Winawer, Classical variation})
									6. axb4 dxc3 7. Nf3 {C17 French, Winawer, Advance, Rauzer variation})
								{C17 French, Winawer, Advance, Bogolyubov variation})
							{C16 French, Winawer, Petrosian variation})
						4... c5 5. exd5 Qxd5 6. Bd2 {C15 French, Winawer, Kondratiyev variation})
					{C10 French, Marshall variation})
				{C00 French, Schlechter variation})
			{C00 Lengfellner system})
		{C00 French defense, Steiner variation})
		(1... e5 {C20 King's pawn game} 2. d3
			(2. a3 {C20 King's pawn, Mengarini's Opening})
			(2. f3 {C20 King's pawn, King's head Opening})
			(2. Qh5 {C20 King's pawn, Patzer Opening})
			(2. Qf3 {C20 King's pawn, Napoleon's Opening})
			(2. c3 {C20 King's pawn, Lopez Opening})
			(2. Ne2 {C20 Alapin's Opening})
			(2. d4 exd4 {C21 Centre game} 3. Nf3
				(3. f4 {C21 Halasz gambit})
				(3. c3 {C21 Danish gambit} 3... dxc3
					(3... d5 {C21 Danish gambit, Soerensen defense})
				4. Bc4 cxb2 5. Bxb2 Qe7
					(5... d5 {C21 Danish gambit, Schlechter defense})
				{C21 Danish gambit, Collijn defense})
				(3. Qxd4 {C21 Centre game} 3... Nc6 {C22 Centre game} 4. Qe3
					(4. Qc4 {C22 Centre game, Hall variation})
				{C22 Centre game, Paulsen attack} 4... Bb4+
					(4... f5 {C22 Centre game, l'Hermet variation})
					(4... Nf6 {C22 Centre game, Berger variation} 5. Nc3 Bb4 6. Bd2 O-O 7. O-O-O Re8 8. Bc4 d6 9. Nh3 {C22 Centre game, Kupreichik variation})
				5. c3 Be7 {C22 Centre game, Charousek variation})
			3... c5 4. Bc4 b5 {C21 Centre game, Kieseritsky variation})
			(2. Bc4 {C23 Bishop's Opening} 2... c6
				(2... f5 {C23 Bishop's Opening, Calabrese counter-gambit} 3. d3 {C23 Bishop's Opening, Calabrese counter-gambit, Jaenisch variation})
				(2... Bc5 {C23 Bishop's Opening, Classical variation} 3. Qe2
					(3. c3 {C23 Bishop's Opening, Philidor variation} 3... Nf6
						(3... d5 {C23 Bishop's Opening, Lewis counter-gambit})
						(3... Qg5 {C23 Bishop's Opening, del Rio variation})
					4. d4 exd4 5. e5 d5 6. exf6 dxc4 7. Qh5 O-O {C23 Bishop's Opening, Pratt variation})
					(3. d4 {C23 Bishop's Opening, Lewis gambit})
					(3. b4 {C23 Bishop's Opening, Wing gambit} 3... Bxb4 4. f4 {C23 Bishop's Opening, MacDonnell double gambit} 4... exf4 5. Nf3 Be7 6. d4 Bh4+ 7. g3 fxg3 8. O-O gxh2+ 9. Kh1 {C23 Bishop's Opening, Four pawns' gambit})
				3... Nc6 4. c3 Nf6 5. f4 {C23 Bishop's Opening, Lopez gambit})
				(2... Nf6 {C24 Bishop's Opening, Berlin defense} 3. f4
					(3. d4 {C24 Bishop's Opening, Ponziani gambit} 3... exd4 4. Nf3 {C24 Bishop's Opening, Urusov gambit} 4... d5 5. exd5 Bb4+ 6. c3 Qe7+ {C24 Bishop's Opening, Urusov gambit, Panov variation})
				{C24 Bishop's Opening, Greco gambit})
			{C23 Bishop's Opening, Philidor counter-attack} 3. d4 d5 4. exd5 cxd5 5. Bb5+ Bd7 6. Bxd7+ Nxd7 7. dxe5 Nxe5 8. Ne2 {C23 Bishop's Opening, Lisitsyn variation})
			(2. Nc3 {C25 Vienna game} 2... Bb4
				(2... Nc6 {C25 Vienna game, Max Lange defense} 3. g3
					(3. d4 {C25 Vienna, Fyfe gambit})
					(3. f4 {C25 Vienna gambit} 3... exf4 4. d4
						(4. Nf3 {C25 Vienna gambit} 4... g5 5. h4
							(5. Bc4 g4 6. O-O {C25 Vienna, Hamppe-Muzio gambit} 6... gxf3 7. Qxf3 Ne5 8. Qxf4 Qf6 {C25 Vienna, Hamppe-Muzio, Dubois variation})
							(5. d4 {C25 Vienna, Pierce gambit} 5... g4 6. Bc4 gxf3 7. O-O d5 8. exd5 Bg4 9. dxc6 {C25 Vienna, Pierce gambit, Rushmere attack})
						5... g4 6. Ng5 {C25 Vienna, Hamppe-Allgaier gambit} 6... d6 {C25 Vienna, Hamppe-Allgaier gambit, Alapin variation})
					{C25 Vienna, Steinitz gambit} 4... Qh4+ 5. Ke2 d5
						(5... b6 {C25 Vienna, Steinitz gambit, Fraser-Minckwitz variation})
					{C25 Vienna, Steinitz gambit, Zukertort defense})
				{C25 Vienna, Paulsen variation})
				(2... Nf6 {C26 Vienna, Falkbeer variation} 3. a3
					(3. g3 {C26 Vienna, Paulsen-Mieses variation})
					(3. Bc4 {C26 Vienna game} 3... Nxe4
						(3... Nc6 {C28 Vienna game})
					{C27 Vienna game} 4. Qh5
						(4. Nf3 {C27 Boden-Kieseritsky gambit} 4... d5 {C27 Boden-Kieseritsky gambit, Lichtenhein defense})
					4... Nd6 5. Bb3 Nc6
						(5... Be7 {C27 Vienna game} 6. Nf3 Nc6 7. Nxe5 {C27 Vienna, Alekhine variation})
					6. Nb5
						(6. d4 {C27 Vienna, Adams' gambit})
					6... g6 7. Qf3 f5 8. Qd5 Qe7 9. Nxc7+ Kd8 10. Nxa8 b6 {C27 Vienna, `Frankenstein-Dracula' variation})
					(3. f4 d5 {C29 Vienna gambit} 4. fxe5
						(4. d3 {C29 Vienna gambit, Steinitz variation})
					4... Nxe4 5. Nf3
						(5. Qf3 {C29 Vienna gambit, Paulsen attack} 5... f5 {C29 Vienna gambit, Bardeleben variation} 6. d4 {C29 Vienna gambit, Heyde variation})
						(5. d3 {C29 Vienna gambit} 5... Qh4+ 6. g3 Nxg3 7. Nf3 Qh5 8. Nxd5 {C29 Vienna gambit, Wurzburger trap})
					5... Bg4
						(5... Be7 {C29 Vienna gambit, Breyer variation})
					6. Qe2 {C29 Vienna gambit, Kaufmann variation})
				{C26 Vienna, Mengarini variation})
			3. Qg4 Nf6 {C25 Vienna, Zhuravlev countergambit})
			(2. f4 {C30 King's gambit} 2... Qh4+
				(2... c5 {C30 King's gambit declined, Mafia defense})
				(2... Qf6 {C30 King's gambit declined, Norwalde variation} 3. Nf3 Qxf4 4. Nc3 Bb4 5. Bc4 {C30 King's gambit declined, Norwalde variation, Buecker gambit})
				(2... Bc5 {C30 King's gambit declined, Classical variation} 3. Nf3 d6 4. Nc3
					(4. c3 {C30 King's gambit declined, Classical, 4.c3} 4... Bg4
						(4... f5 {C30 King's gambit declined, Classical counter-gambit} 5. fxe5 dxe5 6. d4 exd4 7. Bc4 {C30 King's gambit declined, Classical, Reti variation})
					5. fxe5 dxe5 6. Qa4+ {C30 King's gambit declined, Classical, Marshall attack})
					(4. fxe5 {C30 King's gambit declined, Classical, SOldatenkov variation})
					(4. b4 {C30 King's gambit declined, Classical, Heath variation})
				4... Nf6
					(4... Nd7 {C30 King's gambit declined, Classical, Hanham variation})
				5. Bc4 Nc6 6. d3 Bg4 7. h3 Bxf3 8. Qxf3 exf4 {C30 King's gambit declined, Classical, Svenonius variation})
				(2... Nf6 {C30 King's gambit declined, 2...Nf6})
				(2... d5 {C31 King's gambit declined, Falkbeer counter-gambit} 3. Nf3
					(3. Nc3 {C31 King's gambit declined, Falkbeer, Milner-Barry variation})
					(3. exd5 {C31 King's gambit declined, Falkbeer counter-gambit} 3... c6
						(3... e4 {C31 King's gambit declined, Falkbeer, 3...e4} 4. Nc3
							(4. Bb5+ {C31 King's gambit declined, Falkbeer, Nimzovich variation})
							(4. d3 {C31 King's gambit declined, Falkbeer, 4.d3} 4... Nf6 5. Nc3
								(5. dxe4 {C32 King's gambit declined, Falkbeer, 5.de} 5... Nxe4 6. Nf3
									(6. Qe2 {C32 King's gambit declined, Falkbeer, Charousek gambit} 6... Qxd5 7. Nd2 f5 8. g4 {C32 King's gambit declined, Falkbeer, Charousek variation})
								6... Bc5 7. Qe2 Bf2+
									(7... Bf5 {C32 King's gambit declined, Falkbeer, Main line, 7...Bf5} 8. g4 O-O {C32 King's gambit declined, Falkbeer, Tarrasch variation})
								8. Kd1 Qxd5+ 9. Nfd2 {C32 King's gambit declined, Falkbeer, Alapin variation})
								(5. Nd2 {C32 King's gambit declined, Falkbeer, Keres variation})
								(5. Qe2 {C32 King's gambit declined, Falkbeer, Reti variation})
							5... Bb4 6. Bd2 e3 {C31 King's gambit declined, Falkbeer, Morphy gambit})
						4... Nf6 5. Qe2 {C31 King's gambit declined, Falkbeer, Rubinstein variation})
					{C31 King's gambit declined, Nimzovich counter-gambit})
				{C31 King's gambit declined, Falkbeer, Tartakower variation})
				(2... exf4 {C33 King's gambit accepted} 3. Kf2
					(3. b3 {C33 King's gambit accepted, Orsini gambit})
					(3. h4 {C33 King's gambit accepted, Pawn's gambit (Stamma gambit)})
					(3. Bd3 {C33 King's gambit accepted, Schurig gambit})
					(3. Qe2 {C33 King's gambit accepted, Carrera (Basman) gambit})
					(3. d4 {C33 King's gambit accepted, Villemson (Steinitz) gambit})
					(3. Nc3 {C33 King's gambit accepted, Keres (Mason-Steinitz) gambit})
					(3. Qf3 {C33 King's gambit accepted, Breyer gambit})
					(3. Be2 {C33 King's gambit accepted, Lesser Bishop's (Petroff-Jaenisch-Tartakower) gambit})
					(3. Bc4 {C33 King's gambit accepted, Bishop's gambit} 3... Qh4+
						(3... b5 {C33 King's gambit accepted, Bishop's gambit, Bryan counter-gambit})
						(3... Ne7 {C33 King's gambit accepted, Bishop's gambit, Steinitz defense})
						(3... Nc6 {C33 King's gambit accepted, Bishop's gambit, Maurian defense})
						(3... c6 {C33 King's gambit accepted, Bishop's gambit, Ruy Lopez defense})
						(3... f5 {C33 King's gambit accepted, Bishop's gambit, Lopez-Gianutio counter-gambit} 4. Qe2 Qh4+ 5. Kd1 fxe4 6. Nc3 Kd8 {C33 King's gambit accepted, Lopez-Gianutio counter-gambit, Hein variation})
						(3... d5 {C33 King's gambit accepted, Bishop's gambit, Bledow variation} 4. Bxd5 Qh4+
							(4... c6 {C33 King's gambit accepted, Bishop's gambit, Anderssen variation})
							(4... Nf6 {C33 King's gambit accepted, Bishop's gambit, Morphy variation})
						5. Kf1 g5
							(5... Bd6 {C33 King's gambit accepted, Bishop's gambit, Boren-Svenonius variation})
						6. g3 {C33 King's gambit accepted, Bishop's gambit, Gifford variation})
						(3... Nf6 {C33 King's gambit accepted, Bishop's gambit, Cozio (Morphy) defense} 4. Nc3 {C33 King's gambit accepted, Bishop's gambit, Bogolyubov variation} 4... Bb4
							(4... c6 {C33 King's gambit accepted, Bishop's gambit, Jaenisch variation})
						5. e5 {C33 King's gambit accepted, Bishop's gambit, Paulsen attack})
					4. Kf1 d5
						(4... Bc5 {C33 King's gambit accepted, Bishop's gambit, Greco variation})
						(4... g5 {C33 King's gambit accepted, Bishop's gambit, Classical defense} 5. Nc3
							(5. Qf3 {C33 King's gambit accepted, Bishop's gambit, Classical defense, Cozio attack})
						5... Bg7 6. d4
							(6. g3 {C33 King's gambit accepted, Bishop's gambit, McDonnell attack} 6... fxg3 7. Qf3 {C33 King's gambit accepted, Bishop's gambit, Fraser variation})
						6... d6
							(6... Ne7 {C33 King's gambit accepted, Bishop's gambit, Classical defense} 7. g3 {C33 King's gambit accepted, Bishop's gambit, McDonnell attack})
						7. e5 {C33 King's gambit accepted, Bishop's gambit, Grimm attack})
						(4... Nc6 {C33 King's gambit accepted, Bishop's gambit, Boden defense})
						(4... b5 {C33 King's gambit accepted, Bishop's gambit, Bryan counter-gambit})
					5. Bxd5 g5 6. g3 {C33 King's gambit accepted, Bishop's gambit, Chigorin's attack})
					(3. Nf3 {C34 King's knight's gambit} 3... Ne7
						(3... f5 {C34 King's gambit accepted, Gianutio counter-gambit})
						(3... d6 {C34 King's gambit accepted, Fischer defense})
						(3... h6 {C34 King's gambit accepted, Becker defense})
						(3... Nf6 {C34 King's gambit accepted, Schallop defense})
						(3... Be7 {C35 King's gambit accepted, Cunningham defense} 4. Bc4 Bh4+
							(4... Nf6 {C35 King's gambit accepted, Cunningham, Euwe defense})
						5. g3 {C35 King's gambit accepted, Cunningham, Bertin gambit} 5... fxg3 6. O-O gxh2+ 7. Kh1 {C35 King's gambit accepted, Cunningham, Three pawns gambit})
						(3... d5 {C36 King's gambit accepted, Abbazia defense (Classical defense, Modern defense[!])} 4. exd5 Nf6 {C36 King's gambit accepted, Abbazia defense, Modern variation} 5. Bb5+ c6 6. dxc6 bxc6 7. Bc4 Nd5 {C36 King's gambit accepted, Abbazia defense, Botvinnik variation})
						(3... g5 4. Nc3
							(4. d4 {C37 King's gambit accepted, Rosentreter gambit} 4... g4 5. Ne5 {C37 King's gambit accepted, Soerensen gambit})
							(4. Bc4 {C37 King's gambit accepted, King's knight's gambit} 4... Nc6
								(4... g4 5. Bxf7+
									(5. d4 {C37 King's gambit accepted, Ghulam Kassim gambit})
									(5. Nc3 {C37 King's gambit accepted, MacDonnell gambit})
									(5. Ne5 {C37 King's gambit accepted, Salvio gambit} 5... Qh4+ 6. Kf1 Nh6
										(6... f3 {C37 King's gambit accepted, Cochrane gambit})
										(6... Nc6 {C37 King's gambit accepted, Herzfeld gambit})
									7. d4 f3
										(7... d6 {C37 King's gambit accepted, Salvio gambit, Anderssen counter-attack})
									{C37 King's gambit accepted, Silberschmidt gambit})
									(5. O-O {C37 King's gambit accepted, Muzio gambit} 5... gxf3
										(5... Qe7 {C37 King's gambit accepted, Muzio gambit, Kling and Horwitz counter-attack})
										(5... d5 {C37 King's gambit accepted, Muzio gambit, Brentano defense})
									6. Qxf3 Qf6
										(6... Qe7 {C37 King's gambit accepted, Muzio gambit, From defense})
										(6... Nc6 {C37 King's gambit accepted, Muzio gambit, Holloway defense})
									7. e5 Qxe5 8. d3
										(8. Bxf7+ {C37 King's gambit accepted, double Muzio gambit})
									8... Bh6 9. Nc3 Ne7 10. Bd2 Nbc6 11. Rae1 {C37 King's gambit accepted, Muzio gambit, Paulsen variation})
								{C37 King's gambit accepted, Lolli gambit (wild Muzio gambit)} 5... Kxf7 6. O-O gxf3 7. Qxf3 Qf6 8. d4 Qxd4+ 9. Be3 Qf6 10. Nc3 {C37 King's gambit accepted, Lolli gambit, Young variation})
								(4... Bg7 {C38 King's knight's gambit} 5. O-O
									(5. h4 {C38 King's gambit accepted, Philidor gambit} 5... h6 6. d4 d6 7. Nc3
										(7. Qd3 {C38 King's gambit accepted, Philidor gambit, Schultz variation})
									7... c6 8. hxg5 hxg5 9. Rxh8 Bxh8 10. Ne5 {C38 King's gambit accepted, Greco gambit})
								{C38 King's gambit accepted, Hanstein gambit})
							{C37 King's gambit accepted, Blachly gambit})
							(4. h4 {C39 King's knight's gambit} 4... g4 5. Ng5
								(5. Ne5 Bg7
									(5... h5 {C39 King's gambit accepted, Kieseritsky, long whip (Stockwhip, Classical) defense} 6. Bc4 Rh7 7. d4 Bh6 8. Nc3 {C39 King's gambit accepted, Kieseritsky, long whip defense, Jaenisch variation})
									(5... d5 {C39 King's gambit accepted, Kieseritsky, Brentano (Campbell) defense} 6. d4 Nf6 7. exd5
										(7. Bxf4 {C39 King's gambit accepted, Kieseritsky, Brentano defense} 7... Nxe4 8. Nd2 {C39 King's gambit accepted, Kieseritsky, Brentano defense, Caro variation})
									7... Qxd5 8. Nc3 Bb4 9. Kf2 {C39 King's gambit accepted, Kieseritsky, Brentano defense, Kaplanek variation})
									(5... Qe7 {C39 King's gambit accepted, Kieseritsky, Salvio (Rosenthal) defense} 6. d4 f5 7. Bc4 {C39 King's gambit accepted, Kieseritsky, Salvio defense, Cozio variation})
									(5... Be7 {C39 King's gambit accepted, Kieseritsky, Polerio defense})
									(5... Nc6 {C39 King's gambit accepted, Kieseritsky, Neumann defense})
									(5... d6 {C39 King's gambit accepted, Kieseritsky, Kolisch defense})
									(5... Nf6 {C39 King's gambit accepted, Kieseritsky, Berlin defense} 6. Nxg4
										(6. Bc4 {C39 King's gambit accepted, Kieseritsky, Berlin defense, 6.Bc4} 6... d5 7. exd5 Bd6 8. O-O {C39 King's gambit accepted, Kieseritsky, Rice gambit})
									6... d5 {C39 King's gambit accepted, Kieseritsky, Berlin defense, Riviere variation})
								{C39 King's gambit accepted, Kieseritsky, Paulsen defense})
							{C39 King's gambit accepted, Allgaier gambit} 5... h6
								(5... Nf6 {C39 King's gambit accepted, Allgaier, Schlechter defense})
							6. Nxf7 Kxf7 7. Qxg4
								(7. d4 {C39 King's gambit accepted, Allgaier, ThorOld variation} 7... d5 8. Bxf4 dxe4 9. Bc4+ Kg7 10. Be5+ {C39 King's gambit accepted, Allgaier, Cook variation})
								(7. Nc3 {C39 King's gambit accepted, Allgaier, Blackburne gambit})
								(7. Bc4+ {C39 King's gambit accepted, Allgaier, Walker attack} 7... d5 8. Bxd5+ Kg7 9. d4 {C39 King's gambit accepted, Allgaier, Urusov attack})
							7... Nf6 8. Qxf4 Bd6 {C39 King's gambit accepted, Allgaier, Horny defense})
						{C37 King's gambit accepted, Quaade gambit})
					{C34 King's gambit accepted, Bonsch-Osmolovsky variation})
				{C33 King's gambit accepted, Tumbleweed gambit})
			3. g3 Qe7 {C30 King's gambit declined, Keene's defense})
			(2. Nf3 {C40 King's knight Opening} 2... Qe7
				(2... Qf6 {C40 Greco defense})
				(2... f6 {C40 Damiano's defense})
				(2... d5 {C40 QP counter-gambit (elephant gambit)} 3. exd5 Bd6 {C40 QP counter-gambit, Maroczy gambit})
				(2... f5 {C40 Latvian counter-gambit} 3. Nxe5
					(3. Bc4 {C40 Latvian gambit, 3.Bc4} 3... fxe4 4. Nxe5 Qg5
						(4... d5 {C40 Latvian, Polerio variation})
						(4... Nf6 {C40 Latvian, corkscrew counter-gambit})
					5. Nf7 Qxg2 6. Rf1 d5 7. Nxh8 Nf6 {C40 Latvian, Behting variation})
				3... Qf6
					(3... Nc6 {C40 Latvian, Fraser defense})
				4. d4 d6 5. Nc4 fxe4 6. Ne3 {C40 Latvian, Nimzovich variation})
				(2... d6 {C41 Philidor's defense} 3. Bc4
					(3. d4 {C41 Philidor's defense} 3... f5
						(3... exd4 {C41 Philidor, Exchange variation} 4. Qxd4
							(4. Nxd4 {C41 Philidor, Exchange variation} 4... d5
								(4... Nf6 {C41 Philidor, Exchange variation} 5. Nc3 Be7 6. Be2 O-O 7. O-O c5 8. Nf3 Nc6 9. Bg5 Be6 10. Re1 {C41 Philidor, Berger variation})
								(4... g6 {C41 Philidor, Larsen variation})
							5. exd5 {C41 Philidor, Paulsen attack})
						4... Bd7 {C41 Philidor, Boden variation})
						(3... Nf6 {C41 Philidor, Nimzovich (Jaenisch) variation} 4. Nc3
							(4. dxe5 {C41 Philidor, Nimzovich variation} 4... Nxe4 5. Nbd2
								(5. Qd5 {C41 Philidor, Nimzovich, Rellstab variation})
							{C41 Philidor, Nimzovich, Sokolsky variation})
							(4. Ng5 {C41 Philidor, Nimzovich, Locock variation})
							(4. Bc4 {C41 Philidor, Nimzovich, Klein variation})
						4... Nbd7 {C41 Philidor, Improved Hanham variation} 5. Bc4 Be7 6. O-O
							(6. Ng5 O-O 7. Bxf7+ {C41 Philidor, Nimzovich, Larobok variation})
						6... O-O 7. Qe2 c6 8. a4 exd4 {C41 Philidor, Nimzovich, Sozin variation})
						(3... Nd7 {C41 Philidor, Hanham variation} 4. Bc4 c6 5. O-O
							(5. Ng5 {C41 Philidor, Hanham, Kmoch variation} 5... Nh6 6. f4 Be7 7. O-O O-O 8. c3 d5 {C41 Philidor, Hanham, Berger variation})
							(5. Nc3 {C41 Philidor, Hanham, Schlechter variation})
							(5. c3 {C41 Philidor, Hanham, Delmar variation})
						{C41 Philidor, Hanham, Krause variation} 5... Be7 6. dxe5 {C41 Philidor, Hanham, Steiner variation})
					{C41 Philidor, Philidor counter-gambit} 4. dxe5
						(4. Nc3 {C41 Philidor, Philidor counter-gambit, Zukertort variation})
					4... fxe4 5. Ng5 d5 6. e6 {C41 Philidor, Philidor counter-gambit, del Rio attack} 6... Bc5 7. Nc3 {C41 Philidor, Philidor counter-gambit, Berger variation})
				3... Be7
					(3... f5 {C41 Philidor, Lopez counter-gambit} 4. d4 exd4 5. Ng5 Nh6 6. Nxh7 {C41 Philidor, Lopez counter-gambit, Jaenisch variation})
				4. c3 {C41 Philidor, Steinitz variation})
				(2... Nf6 {C42 Petrov's defense} 3. Nxe5
					(3. Nc3 {C42 Petrov Three knights game})
					(3. Bc4 {C42 Petrov, Italian variation})
					(3. d4 {C43 Petrov, Modern (Steinitz) attack} 3... exd4
						(3... Nxe4 {C43 Petrov, Modern attack, Symmetrical variation} 4. Bd3 d5 5. Nxe5 Bd6 6. O-O O-O 7. c4 Bxe5 {C43 Petrov, Modern attack, Trifunovic variation})
					4. e5
						(4. Bc4 {C43 Petrov, Urusov gambit})
					4... Ne4 5. Qxd4
						(5. Qe2 {C43 Petrov, Modern attack, Steinitz variation} 5... Nc5 6. Nxd4 Nc6 {C43 Petrov, Modern attack, Bardeleben variation})
					{C43 Petrov, Modern attack, Main line})
				3... d6
					(3... Nxe4 {C42 Petrov, Damiano variation})
				4. Nf3
					(4. Nxf7 {C42 Petrov, Cochrane gambit})
					(4. Nc4 {C42 Petrov, Paulsen attack})
				4... Nxe4 5. d3
					(5. c4 {C42 Petrov, Kaufmann attack})
					(5. Nc3 {C42 Petrov, Nimzovich attack})
					(5. Qe2 {C42 Petrov, Cozio (Lasker) attack})
					(5. d4 {C42 Petrov, Classical attack} 5... d5
						(5... Nf6 {C42 Petrov, Classical attack, close variation})
					6. Bd3 Be7
						(6... Bd6 {C42 Petrov, Classical attack, Marshall variation} 7. O-O O-O 8. c4 Bg4 {C42 Petrov, Classical attack, Tarrasch variation} 9. cxd5 f5 10. Re1 Bxh2+ {C42 Petrov, Classical attack, Marshall trap})
					7. O-O Nc6
						(7... O-O {C42 Petrov, Classical attack, Mason variation})
					8. Re1
						(8. c4 {C42 Petrov, Classical attack, Jaenisch variation})
					{C42 Petrov, Classical attack, Chigorin variation} 8... Bg4 9. c3 f5 10. Nbd2
						(10. c4 {C42 Petrov, Classical attack, Krause variation} 10... Bh4 {C42 Petrov, Classical attack, Maroczy variation})
					{C42 Petrov, Classical attack, Berger variation})
				{C42 Petrov, French attack})
				(2... Nc6 {C44 King's pawn game} 3. Nxe5
					(3. g3 {C44 Konstantinopolsky Opening})
					(3. c4 {C44 Dresden Opening})
					(3. Be2 {C44 Inverted Hungarian} 3... Nf6 4. d3
						(4. d4 {C44 Tayler Opening})
					4... d5 5. Nbd2 {C44 Inverted Hanham})
					(3. c3 {C44 Ponziani Opening} 3... d5
						(3... Nf6 {C44 Ponziani, Jaenisch counter-attack} 4. d4 Nxe4 5. d5 Bc5 {C44 Ponziani, Fraser defense})
						(3... Nge7 {C44 Ponziani, Reti variation})
						(3... Be7 {C44 Ponziani, Romanishin variation})
						(3... f5 {C44 Ponziani counter-gambit} 4. d4 d6 5. d5 {C44 Ponziani counter-gambit, Schmidt attack} 5... fxe4 6. Ng5 Nb8 7. Nxe4 Nf6 8. Bd3 Be7 {C44 Ponziani counter-gambit, Cordel variation})
					4. Qa4 Bd7
						(4... Nf6 {C44 Ponziani, Leonhardt variation})
						(4... f6 {C44 Ponziani, Steinitz variation})
					{C44 Ponziani, Caro variation})
					(3. d4 {C44 Scotch Opening} 3... Nxd4
						(3... exd4 4. Bb5
							(4. c3 {C44 Scotch, Goering gambit} 4... dxc3 5. Nxc3 d6
								(5... Bb4 {C44 Scotch, Goering gambit} 6. Bc4 Nf6 {C44 Scotch, Goering gambit, Bardeleben variation})
							6. Bc4 Bg4 7. O-O Ne5 8. Nxe5 Bxd1 9. Bxf7+ Ke7 10. Nd5# {C44 Scotch, Sea-cadet mate})
							(4. Bc4 {C44 Scotch gambit} 4... Bc5
								(4... Bb4+ {C44 Scotch gambit} 5. c3 dxc3 6. O-O
									(6. bxc3 {C44 Scotch gambit} 6... Ba5 7. e5 {C44 Scotch gambit, Cochrane variation})
								6... cxb2 7. Bxb2 Nf6 8. Ng5 O-O 9. e5 Nxe5 {C44 Scotch gambit, Hanneken variation})
								(4... Be7 {C44 Scotch gambit, Benima defense})
								(4... Nf6 {C44 Scotch gambit, Dubois-Reti defense})
							5. O-O
								(5. Ng5 {C44 Scotch gambit} 5... Nh6 6. Nxf7
									(6. Qh5 {C44 Scotch gambit, Vitzhum attack})
								6... Nxf7 7. Bxf7+ Kxf7 8. Qh5+ g6 9. Qxc5 d5 {C44 Scotch gambit, Cochrane-Shumov defense})
							5... d6 6. c3 Bg4 {C44 Scotch gambit, Anderssen (Paulsen, Suhle) counter-attack})
							(4. Nxd4 {C45 Scotch game} 4... Nxd4
								(4... Qh4 {C45 Scotch, Pulling counter-attack} 5. Nb5
									(5. Nf3 {C45 Scotch, Fraser attack})
									(5. Nc3 {C45 Scotch, Steinitz variation})
								{C45 Scotch, Horwitz attack} 5... Bb4+ 6. Nd2
									(6. Bd2 {C45 Scotch game} 6... Qxe4+ 7. Be2 Kd8 8. O-O Bxd2 9. Nxd2 Qg6 {C45 Scotch, Rosenthal variation})
								6... Qxe4+ 7. Be2 Qxg2 8. Bf3 Qh3 9. Nxc7+ Kd8 10. Nxa8 Nf6 11. a3 {C45 Scotch, Berger variation})
								(4... Nf6 {C45 Scotch, Schmidt variation} 5. Nxc6 bxc6 6. e5
									(6. Nd2 {C45 Scotch, Tartakower variation})
								{C45 Scotch, Mieses variation})
								(4... Bc5 {C45 Scotch game} 5. Be3
									(5. Nb3 {C45 Scotch, Potter variation} 5... Bb4+ {C45 Scotch, Romanishin variation})
								5... Qf6 6. c3
									(6. Nb5 {C45 Scotch, Blumenfeld attack})
								6... Nge7 7. Qd2
									(7. Bb5 {C45 Scotch, Paulsen attack} 7... Nd8 {C45 Scotch, Paulsen, Gunsberg defense})
									(7. Nc2 {C45 Scotch, Meitner variation})
								{C45 Scotch, Blackburne attack} 7... d5 8. Nb5 Bxe3 9. Qxe3 O-O 10. Nxc7 Rb8 11. Nxd5 Nxd5 12. exd5 Nb4 {C45 Scotch, Gottschall variation})
							5. Qxd4 d6 6. Bd3 {C45 Scotch, Ghulam Kassim variation})
						{C44 Scotch, Relfsson gambit ('MacLopez')})
					{C44 Scotch, Lolli variation} 4. Nxe5 Ne6 5. Bc4 c6 6. O-O Nf6 7. Nxf7 {C44 Scotch, Cochrane variation})
					(3. Nc3 {C46 Three knights game} 3... Bb4
						(3... f5 {C46 Three knights, Winawer defense (Gothic defense)})
						(3... g6 {C46 Three knights, Steinitz variation} 4. d4 exd4 5. Nd5 {C46 Three knights, Steinitz, Rosenthal variation})
						(3... Nf6 {C46 Four knights game} 4. Nxe5
							(4. Bc4 {C46 Four knights, Italian variation})
							(4. a3 {C46 Four knights, Gunsberg variation})
							(4. d4 {C47 Four knights, Scotch variation} 4... Bb4
								(4... exd4 {C47 Four knights, Scotch, 4...exd4} 5. Nd5 {C47 Four knights, Belgrade gambit})
							5. Nxe5 {C47 Four knights, Scotch, Krause variation})
							(4. Bb5 {C48 Four knights, Spanish variation} 4... a6
								(4... Bc5 {C48 Four knights, Spanish, Classical defense} 5. O-O O-O 6. Nxe5 Nxe5
									(6... Nd4 {C48 Four knights, Marshall variation})
								7. d4 Bd6 8. f4 Nc6 9. e5 Bb4 {C48 Four knights, Bardeleben variation})
								(4... Nd4 {C48 Four knights, Rubinstein counter-gambit} 5. Nxe5
									(5. Be2 {C48 Four knights, Rubinstein counter-gambit, 5.Be2} 5... Nxf3+ 6. Bxf3 Bc5 7. O-O O-O 8. d3 d6 9. Na4 Bb6 {C48 Four knights, Rubinstein counter-gambit Maroczy variation})
									(5. Nxd4 {C48 Four knights, Rubinstein counter-gambit, Exchange variation})
									(5. O-O {C48 Four knights, Rubinstein counter-gambit, Henneberger variation})
								5... Qe7 6. f4 {C48 Four knights, Rubinstein counter-gambit, Bogolyubov variation})
								(4... Bb4 {C49 Four knights, double Ruy Lopez} 5. O-O O-O 6. Nd5
									(6. d3 {C49 Four knights, double Ruy Lopez} 6... Qe7
										(6... Bxc3 {C49 Four knights} 7. bxc3 d6
											(7... d5 {C49 Four knights, Svenonius variation})
										8. Re1 {C49 Four knights, Janowski variation})
										(6... d6 {C49 Four knights, Symmetrical variation} 7. Bg5
											(7. Ne2 {C49 Four knights, Symmetrical, Maroczy system})
										7... Bxc3
											(7... Ne7 {C49 Four knights, Symmetrical, Pillsbury variation} 8. Nh4 c6 9. Bc4 d5 10. Bb3 Qd6 {C49 Four knights, Symmetrical, Blake variation})
											(7... Be6 {C49 Four knights, Symmetrical, Tarrasch variation})
										8. bxc3 Qe7 {C49 Four knights, Symmetrical, Metger unpin} 9. Re1 Nd8 10. d4 Bg4 {C49 Four knights, Symmetrical, Capablanca variation})
									7. Ne2 d5 {C49 Four knights, Alatortsev variation})
									(6. Bxc6 {C49 Four knights, Nimzovich (Paulsen) variation})
								6... Nxd5 7. exd5 e4 {C49 Four knights, Gunsberg counter-attack})
							5. Bxc6 {C48 Four knights, Ranken variation} 5... dxc6 6. Nxe5 Nxe4 7. Nxe4 Qd4 8. O-O Qxe5 9. Re1 Be6 10. d4 Qd5 {C48 Four knights, Spielmann variation})
						{C46 Four knights, Schultze-Mueller gambit})
					4. Nd5 Nf6 {C46 Three knights, Schlechter variation})
					(3. Bc4 {C50 King's pawn game} 3... Nd4
						(3... f5 {C50 Rousseau gambit})
						(3... Be7 {C50 Hungarian defense} 4. d4 exd4 5. c3 Nf6 6. e5 Ne4 {C50 Hungarian defense, Tartakower variation})
						(3... Bc5 {C50 Giuoco Piano} 4. Nc3
							(4. Bxf7+ {C50 Giuoco Piano, Jerome gambit})
							(4. d3 {C50 Giuoco Pianissimo} 4... f5
								(4... Nf6 {C50 Giuoco Pianissimo} 5. Nc3 {C50 Giuoco Pianissimo, Italian Four knights variation} 5... d6 6. Bg5 {C50 Giuoco Pianissimo, Canal variation})
							5. Ng5 f4 {C50 Giuoco Pianissimo, Dubois variation})
							(4. b4 {C51 Evans gambit declined} 4... Bb6
								(4... d5 {C51 Evans counter-gambit})
								(4... Bxb4 {C51 Evans gambit} 5. c3 Bc5
									(5... Bd6 {C51 Evans gambit, Stone-Ware variation})
									(5... Bf8 {C51 Evans gambit, Mayet defense})
									(5... Be7 {C51 Evans gambit, 5...Be7} 6. d4 Na5 {C51 Evans gambit, Cordel variation})
									(5... Ba5 {C52 Evans gambit} 6. d4
										(6. O-O {C52 Evans gambit} 6... Nf6
											(6... d6 {C52 Evans gambit} 7. d4 exd4
												(7... Bb6 {C52 Evans gambit, Lasker defense})
												(7... Bd7 {C52 Evans gambit, Sanders-Alapin variation})
												(7... Bg4 {C52 Evans gambit, Alapin-Steinitz variation})
											8. Qb3 {C52 Evans gambit, Waller attack})
										7. d4 O-O 8. Nxe5 {C52 Evans gambit, Richardson attack})
									6... exd4
										(6... b5 {C52 Evans gambit, Leonhardt variation})
										(6... d6 {C52 Evans gambit} 7. Qb3
											(7. Bg5 {C52 Evans gambit, Sokolsky variation})
										{C52 Evans gambit, Tartakower attack} 7... Qd7 8. dxe5 dxe5 9. O-O Bb6 10. Ba3 Na5 11. Nxe5 {C52 Evans gambit, Levenfish variation})
									7. O-O dxc3 {C52 Evans gambit, compromised defense} 8. Qb3 Qf6 9. e5 Qg6 10. Nxc3 Nge7 11. Ba3
										(11. Rd1 {C52 Evans gambit, compromised defense, Potter variation})
									{C52 Evans gambit, compromised defense, Paulsen variation})
								6. d4 exd4 7. O-O d6 8. cxd4 Bb6 {C51 Evans gambit, normal variation} 9. d5
									(9. Nc3 {C51 Evans gambit, Morphy attack} 9... Na5
										(9... Bg4 {C51 Evans gambit} 10. Qa4 {C51 Evans gambit, Fraser attack} 10... Bd7 11. Qb3 Na5 12. Bxf7+ Kf8 13. Qc2 {C51 Evans gambit, Fraser-Mortimer attack})
									10. Bg5 {C51 Evans gambit, Goering attack} 10... f6 11. Be3 {C51 Evans gambit, Steinitz variation})
								9... Na5 10. Bb2 {C51 Evans gambit, Ulvestad variation} 10... Ne7 {C51 Evans gambit, Paulsen variation})
							5. b5
								(5. a4 {C51 Evans gambit declined, 5.a4} 5... a6 6. Nc3 {C51 Evans gambit declined, Showalter variation})
								(5. Bb2 {C51 Evans gambit declined, Cordel variation})
							5... Na5 6. Nxe5 Nh6
								(6... Qg5 {C51 Evans gambit declined, Hirschbach variation} 7. Bxf7+
									(7. Qf3 Qxe5 8. Qxf7+ Kd8 9. Bb2 {C51 Evans gambit declined, Hicken variation})
								7... Ke7 8. Qh5 {C51 Evans gambit declined, Vasquez variation})
							{C51 Evans gambit declined, Lange variation} 7. d4 d6 8. Bxh6 dxe5 9. Bxg7 Rg8 10. Bxf7+ Kxf7 11. Bxe5 Qg5 12. Nd2 {C51 Evans gambit declined, Pavlov variation})
							(4. c3 {C53 Giuoco Piano} 4... d6
								(4... Qe7 {C53 Giuoco Piano, close variation} 5. d4 Bb6 {C53 Giuoco Piano, centre-hOlding variation} 6. O-O
									(6. Bg5 {C53 Giuoco Piano, Mestel variation})
									(6. d5 Nb8 7. d6 {C53 Giuoco Piano, Eisinger variation})
								6... Nf6 7. a4 a6 8. Re1 d6 9. h3 {C53 Giuoco Piano, Tarrasch variation})
								(4... Nf6 {C53 Giuoco Piano} 5. b4
									(5. d4 {C53 Giuoco Piano} 5... exd4 6. e5
										(6. cxd4 {C54 Giuoco Piano} 6... Bb4+ 7. Bd2
											(7. Kf1 {C54 Giuoco Piano, Cracow variation})
											(7. Nc3 {C54 Giuoco Piano, Greco's attack} 7... Nxe4 8. O-O Nxc3
												(8... Bxc3 {C54 Giuoco Piano} 9. bxc3
													(9. d5 {C54 Giuoco Piano, Moeller (Therkatz) attack} 9... Bf6 10. Re1 Ne7 11. Rxe4 d6 12. Bg5
														(12. g4 {C54 Giuoco Piano, Moeller, bayonet attack})
													12... Bxg5 13. Nxg5 O-O 14. Nxh7 {C54 Giuoco Piano, Therkatz-Herzog variation})
												9... d5 10. Ba3 {C54 Giuoco Piano, Steinitz variation})
											{C54 Giuoco Piano, Greco variation} 9. bxc3 Bxc3 10. Qb3
												(10. Ba3 {C54 Giuoco Piano, Aitken variation})
											10... d5 {C54 Giuoco Piano, Bernstein variation})
										7... Nxe4 8. Bxb4 Nxb4 9. Bxf7+ Kxf7 10. Qb3+ d5 11. Ne5+ Kf6 12. f3 {C54 Giuoco Piano, Krause variation})
									6... Ne4
										(6... d5 {C53 Giuoco Piano} 7. Bb5 Ne4 8. cxd4 Bb4+ {C53 Giuoco Piano, Anderssen variation})
									7. Bd5 Nxf2 8. Kxf2 dxc3+ 9. Kg3 {C53 Giuoco Piano, Ghulam Kassim variation})
								{C53 Giuoco Piano, Bird's attack})
							5. d4 exd4 6. cxd4 Bb6 {C53 Giuoco Piano, LaBourdonnais variation})
						4... Nf6 {C50 Giuoco Piano, Four knights variation})
						(3... Nf6 {C55 Two knights defense} 4. O-O
							(4. d3 {C55 Two knights defense (Modern Bishop's Opening)})
							(4. d4 {C55 Two knights defense} 4... exd4 5. e5
								(5. Ng5 {C55 Two knights defense, Perreux variation})
								(5. O-O {C55 Two knights defense} 5... Bc5
									(5... Nxe4 {C56 Two knights defense} 6. Re1 d5 7. Bxd5
										(7. Nc3 {C56 Two knights defense, Canal variation})
									7... Qxd5 8. Nc3 Qa5 9. Nxe4 Be6 10. Bg5 h6 11. Bh4 g5 12. Nf6+ Ke7 13. b4 {C56 Two knights defense, Yurdansky attack})
								6. e5 {C55 Two knights, Max Lange attack} 6... d5
									(6... Ng4 {C55 Two knights, Max Lange attack, Steinitz variation} 7. c3 {C55 Two knights, Max Lange attack, Krause variation})
								7. exf6 dxc4 8. Re1+ Be6 9. Ng5
									(9. fxg7 {C55 Two knights, Max Lange attack, Schlechter variation})
								9... Qd5
									(9... g6 {C55 Two knights, Max Lange attack, Loman defense})
								10. Nc3 Qf5 11. g4
									(11. Nce4 {C55 Two knights, Max Lange attack, Marshall variation} 11... Bf8 {C55 Two knights, Max Lange attack, Rubinstein variation})
								11... Qg6 12. Nce4 Bb6 13. f4 O-O-O {C55 Two knights, Max Lange attack, Berger variation})
							5... d5 6. Bb5 Ne4 7. Nxd4 Bc5 8. Nxc6 Bxf2+ 9. Kf1 Qh4 {C55 Two knights defense, Keidanz variation})
							(4. Ng5 {C57 Two knights defense} 4... Bc5
								(4... d5 5. exd5 b5
									(5... Nd4 {C57 Two knights defense, Fritz variation} 6. c3 b5 7. Bf1 Nxd5 8. Ne4 {C57 Two knights defense, Fritz, Gruber variation})
									(5... Nxd5 6. d4
										(6. Nxf7 {C57 Two knights defense, Fegatello attack} 6... Kxf7 7. Qf3+ Ke6 8. Nc3 Nb4
											(8... Ne7 {C57 Two knights defense, Fegatello attack, Polerio defense})
										9. Qe4 c6 10. a3 Na6 11. d4 Nc7 {C57 Two knights defense, Fegatello attack, Leonhardt variation})
									{C57 Two knights defense, Lolli attack} 6... Bb4+ {C57 Two knights defense, Pincus variation})
									(5... Na5 {C58 Two knights defense} 6. d3
										(6. Bb5+ {C58 Two knights defense} 6... c6 7. dxc6 bxc6 8. Qf3
											(8. Be2 {C58 Two knights defense} 8... h6 {C59 Two knights defense} 9. Nf3
												(9. Nh3 {C59 Two knights defense, Steinitz variation})
											9... e4 10. Ne5 Bd6
												(10... Qc7 {C59 Two knights defense, Goering variation})
											11. d4 Qc7 12. Bd2 {C59 Two knights defense, Knorre variation})
										{C58 Two knights defense, Bogolyubov variation} 8... Qc7
											(8... Rb8 {C58 Two knights defense, Colman variation})
											(8... cxb5 {C58 Two knights defense, Blackburne variation})
										9. Bd3 {C58 Two knights defense, Paoli variation})
									{C58 Two knights defense, Kieseritsky variation} 6... h6 7. Nf3 e4 8. Qe2 Nxc4 9. dxc4 Bc5
										(9... Be7 {C58 Two knights defense, Maroczy variation})
									10. Nfd2 {C58 Two knights defense, Yankovich variation})
								{C57 Two knights defense, Ulvestad variation})
							{C57 Two knights defense, Wilkes Barre (Traxler) variation})
						4... Bc5 5. d4 Bxd4 6. Nxd4 Nxd4 7. Bg5 h6
							(7... d6 {C55 Giuoco piano} 8. f4 Qe7 9. fxe5 dxe5 10. Nc3 {C55 Giuoco piano, Holzhausen attack})
						8. Bh4 g5 9. f4 {C55 Giuoco piano, Rosentreter variation})
					4. Nxe5 Qg5 5. Nxf7 Qxg2 6. Rf1 Qxe4+ 7. Be2 Nf3# {C50 Blackburne shilling gambit})
					(3. Bb5 {C60 Ruy Lopez (Spanish Opening)} 3... f6
						(3... Na5 {C60 Ruy Lopez, Pollock defense})
						(3... Be7 {C60 Ruy Lopez, Lucena defense})
						(3... Qe7 {C60 Ruy Lopez, Vinogradov variation})
						(3... g5 {C60 Ruy Lopez, Brentano defense})
						(3... g6 {C60 Ruy Lopez, Fianchetto (Smyslov/Barnes) defense})
						(3... Nge7 {C60 Ruy Lopez, Cozio defense} 4. Nc3 g6 {C60 Ruy Lopez, Cozio defense, Paulsen variation})
						(3... Nd4 {C61 Ruy Lopez, Bird's defense} 4. Nxd4 exd4 5. O-O Ne7 {C61 Ruy Lopez, Bird's defense, Paulsen variation})
						(3... d6 {C62 Ruy Lopez, Old Steinitz defense} 4. d4 Bd7 5. Nc3
							(5. c4 {C62 Ruy Lopez, Old Steinitz defense, Semi-Duras variation})
						5... Nf6 6. Bxc6 {C62 Ruy Lopez, Old Steinitz defense, Nimzovich attack})
						(3... f5 {C63 Ruy Lopez, Schliemann defense} 4. Nc3 {C63 Ruy Lopez, Schliemann defense, Berger variation})
						(3... Bc5 {C64 Ruy Lopez, Classical (Cordel) defense} 4. O-O
							(4. c3 {C64 Ruy Lopez, Classical defense, 4.c3} 4... Nf6
								(4... Bb6 {C64 Ruy Lopez, Classical defense, Charousek variation})
								(4... Qe7 {C64 Ruy Lopez, Classical defense, Boden variation})
								(4... f5 {C64 Ruy Lopez, Cordel gambit})
							5. O-O O-O 6. d4 Bb6 {C64 Ruy Lopez, Classical defense, Benelux variation})
						4... Nd4 5. b4 {C64 Ruy Lopez, Classical defense, Zaitsev variation})
						(3... Nf6 {C65 Ruy Lopez, Berlin defense} 4. d4
							(4. d3 Ne7
								(4... d6 5. Bxc6+
									(5. c4 {C65 Ruy Lopez, Berlin defense, Duras variation})
								{C65 Ruy Lopez, Berlin defense, Anderssen variation})
								(4... Bc5 5. Be3 {C65 Ruy Lopez, Berlin defense, Kaufmann variation})
							{C65 Ruy Lopez, Berlin defense, Mortimer variation} 5. Nxe5 c6 {C65 Ruy Lopez, Berlin defense, Mortimer trap})
							(4. O-O {C65 Ruy Lopez, Berlin defense, 4.O-O} 4... Bc5
								(4... d6 {C66 Ruy Lopez, Berlin defense, 4.O-O, d6} 5. d4 Bd7
									(5... Nd7 {C66 Ruy Lopez, Closed Berlin defense, Chigorin variation})
								6. Nc3 Be7
									(6... exd4 {C66 Ruy Lopez, Closed Berlin defense, Wolf variation})
								{C66 Ruy Lopez, Berlin defense, hedgehog variation} 7. Re1
									(7. Bg5 {C66 Ruy Lopez, Closed Berlin defense, Bernstein variation})
									(7. Bxc6 {C66 Ruy Lopez, Closed Berlin defense, Showalter variation})
								7... O-O {C66 Ruy Lopez, Berlin defense, Tarrasch trap})
								(4... Nxe4 {C67 Ruy Lopez, Berlin defense, Open variation} 5. d4 Nd6
									(5... Be7 {C67 Ruy Lopez, Open Berlin defense, 5...Be7} 6. Qe2
										(6. dxe5 {C67 Ruy Lopez, Berlin defense, Minckwitz variation})
									6... Nd6
										(6... d5 {C67 Ruy Lopez, Berlin defense, Trifunovic variation})
									7. Bxc6 bxc6 8. dxe5 Nb7
										(8... Nf5 {C67 Ruy Lopez, Berlin defense, Cordel variation})
									9. Nc3
										(9. c4 {C67 Ruy Lopez, Berlin defense, Zukertort variation})
										(9. b3 {C67 Ruy Lopez, Berlin defense, Pillsbury variation})
										(9. Nd4 {C67 Ruy Lopez, Berlin defense, Winawer attack})
									9... O-O 10. Re1 Nc5 11. Nd4 Ne6 12. Be3 Nxd4 13. Bxd4 c5 {C67 Ruy Lopez, Berlin defense, Rio de Janeiro variation})
									(5... a6 {C67 Ruy Lopez, Berlin defense, Rosenthal variation})
								6. dxe5
									(6. Ba4 {C67 Ruy Lopez, Open Berlin defense, Showalter variation})
								{C67 Ruy Lopez, Open Berlin defense, l'Hermet variation})
							{C65 Ruy Lopez, Berlin defense, Beverwijk variation})
						4... exd4 5. O-O {C65 Ruy Lopez, Berlin defense, Nyholm attack})
						(3... a6 4. Bxc6
							(4. Ba4 {C70 Ruy Lopez} 4... g6
								(4... Nge7 {C70 Ruy Lopez, Cozio defense deferred})
								(4... Nd4 {C70 Ruy Lopez, Bird's defense deferred})
								(4... Bb4 {C70 Ruy Lopez, Alapin's defense deferred})
								(4... Bc5 {C70 Ruy Lopez, Classical defense deferred})
								(4... b5 {C70 Ruy Lopez, Caro variation} 5. Bb3 Bc5
									(5... Na5 {C70 Ruy Lopez, Taimanov (chase/wing/Accelerated counterthrust) variation})
								{C70 Ruy Lopez, Graz variation})
								(4... f5 {C70 Ruy Lopez, Schliemann defense deferred})
								(4... d6 {C71 Ruy Lopez, Modern Steinitz defense} 5. d4
									(5. Nc3 {C71 Ruy Lopez, Modern Steinitz defense, Three knights variation})
									(5. c4 {C71 Ruy Lopez, Modern Steinitz defense, Duras (Keres) variation})
									(5. O-O {C72 Ruy Lopez, Modern Steinitz defense, 5.O-O})
									(5. Bxc6+ bxc6 6. d4 {C73 Ruy Lopez, Modern Steinitz defense, Richter variation} 6... f6 {C73 Ruy Lopez, Modern Steinitz defense, Alapin variation})
									(5. c3 {C74 Ruy Lopez, Modern Steinitz defense} 5... f5
										(5... Bd7 {C75 Ruy Lopez, Modern Steinitz defense} 6. d4 Nge7
											(6... g6 {C76 Ruy Lopez, Modern Steinitz defense, Fianchetto (Bronstein) variation})
										{C75 Ruy Lopez, Modern Steinitz defense, Rubinstein variation})
									{C74 Ruy Lopez, Modern Steinitz defense, siesta variation} 6. exf5 Bxf5 7. O-O {C74 Ruy Lopez, Siesta, Kopayev variation})
								5... b5 6. Bb3 Nxd4 7. Nxd4 exd4 8. Qxd4 c5 {C71 Ruy Lopez, Noah's ark trap})
								(4... Nf6 {C77 Ruy Lopez, Morphy defense} 5. Nc3
									(5. Bxc6 {C77 Ruy Lopez, Treybal (Bayreuth) variation (Exchange var. deferred)})
									(5. Qe2 {C77 Ruy Lopez, Wormald (Alapin) attack} 5... b5 6. Bb3 Be7 7. d4 d6 8. c3 Bg4 {C77 Ruy Lopez, Wormald attack, Gruenfeld variation})
									(5. d3 {C77 Ruy Lopez, Anderssen variation} 5... d6 6. c4 {C77 Ruy Lopez, Morphy defense, Duras variation})
									(5. O-O {C78 Ruy Lopez, 5.O-O} 5... b5
										(5... Bc5 {C78 Ruy Lopez, Moeller defense})
										(5... d6 {C79 Ruy Lopez, Steinitz defense deferred (Russian defense)} 6. Bxc6+ bxc6 7. d4 Bg4
											(7... Nxe4 {C79 Ruy Lopez, Steinitz defense deferred, Rubinstein variation} 8. Re1 f5 9. dxe5 d5 10. Nc3 {C79 Ruy Lopez, Steinitz defense deferred, Boleslavsky variation})
										{C79 Ruy Lopez, Steinitz defense deferred, Lipnitsky variation})
										(5... Nxe4 {C80 Ruy Lopez, Open (Tarrasch) defense} 6. Qe2
											(6. Nc3 {C80 Ruy Lopez, Open, Knorre variation})
											(6. d4 {C80 Ruy Lopez, Open, 6.d4} 6... exd4
												(6... b5 {C80 Ruy Lopez, Open, 6.d4 b5} 7. Nxe5
													(7. d5 {C80 Ruy Lopez, Open, Richter variation})
													(7. Bb3 {C80 Ruy Lopez, Open, 7.Bb3} 7... d5 8. a4
														(8. c4 {C80 Ruy Lopez, Open, Harksen gambit})
														(8. dxe5 {C80 Ruy Lopez, Open, 8.de} 8... Ne7
															(8... Be6 {C80 Ruy Lopez, Open, 8...Be6} 9. Nbd2
																(9. Qe2 {C81 Ruy Lopez, Open, Howell attack} 9... Be7 10. Rd1
																	(10. c4 {C81 Ruy Lopez, Open, Howell attack, Adam variation})
																10... O-O 11. c4 bxc4 12. Bxc4 Qd7 {C81 Ruy Lopez, Open, Howell attack, Ekstroem variation})
																(9. c3 {C82 Ruy Lopez, Open, 9.c3} 9... Nc5
																	(9... Bc5 {C82 Ruy Lopez, Open, Italian variation} 10. Nbd2
																		(10. Qd3 {C82 Ruy Lopez, Open, Motzko attack} 10... Ne7 {C82 Ruy Lopez, Open, Motzko attack, Nenarokov variation})
																	{C82 Ruy Lopez, Open, St. Petersburg variation} 10... O-O 11. Bc2 Nxf2 {C82 Ruy Lopez, Open, Dilworth variation})
																	(9... Be7 {C83 Ruy Lopez, Open, Classical defense} 10. Nbd2
																		(10. Re1 {C83 Ruy Lopez, Open, 9...Be7, 10.Re1} 10... O-O 11. Nd4 Qd7
																			(11... Nxe5 {C83 Ruy Lopez, Open, Breslau variation})
																		12. Nxe6 fxe6 13. Rxe4 {C83 Ruy Lopez, Open, Tarrasch trap})
																	10... O-O 11. Qe2 {C83 Ruy Lopez, Open, Malkin variation})
																{C82 Ruy Lopez, Open, Berlin variation})
															{C80 Ruy Lopez, Open, Bernstein variation} 9... Nc5 10. c3 d4 11. Ng5 {C80 Ruy Lopez, Open, Bernstein variation, Karpov gambit})
														{C80 Ruy Lopez, Open, Zukertort variation})
													8... Nxd4 {C80 Ruy Lopez, Open, Schlechter defense} 9. Nxd4 exd4 10. Nc3 {C80 Ruy Lopez, Open, Berger variation})
												{C80 Ruy Lopez, Open, Friess attack})
											{C80 Ruy Lopez, Open, Riga variation})
										{C80 Ruy Lopez, Open, Tartakower variation})
										(5... Be7 {C84 Ruy Lopez, Closed defense} 6. d4
											(6. Bxc6 {C85 Ruy Lopez, Exchange variation doubly deferred (DERLD)})
											(6. Qe2 {C86 Ruy Lopez, Worrall attack} 6... b5 7. Bb3 O-O
												(7... d6 {C86 Ruy Lopez, Worrall attack, solid line})
											{C86 Ruy Lopez, Worrall attack, sharp line})
											(6. Re1 d6
												(6... b5 7. Bb3 {C88 Ruy Lopez, Closed} 7... d6
													(7... Bb7 {C88 Ruy Lopez, Trajkovic counter-attack})
													(7... O-O {C88 Ruy Lopez, Closed, 7...O-O} 8. a4
														(8. c3 {C88 Ruy Lopez, Closed, 8.c3} 8... d5
															(8... d6 {C90 Ruy Lopez, Closed (with ...d6)} 9. d3
																(9. Bc2 {C90 Ruy Lopez, Closed, Lutikov variation})
																(9. a3 {C90 Ruy Lopez, Closed, Suetin variation})
																(9. d4 {C91 Ruy Lopez, Closed, 9.d4} 9... Bg4 {C91 Ruy Lopez, Closed, Bogolyubov variation})
																(9. h3 {C92 Ruy Lopez, Closed, 9.h3} 9... a5
																	(9... Be6 {C92 Ruy Lopez, Closed, Kholmov variation})
																	(9... Nd7 {C92 Ruy Lopez, Closed, Ragozin-Petrosian (`Keres') variation})
																	(9... Bb7 {C92 Ruy Lopez, Closed, Flohr-Zaitsev system (Lenzerheide variation)})
																	(9... h6 {C93 Ruy Lopez, Closed, Smyslov defense})
																	(9... Nb8 {C94 Ruy Lopez, Closed, Breyer defense} 10. d4 {C95 Ruy Lopez, Closed, Breyer, 10.d4} 10... Nbd7 {C95 Ruy Lopez, Closed, Breyer, Borisenko variation} 11. Nbd2
																		(11. Nh4 {C95 Ruy Lopez, Closed, Breyer, Simagin variation})
																	11... Bb7 12. Bc2 c5 {C95 Ruy Lopez, Closed, Breyer, Gligoric variation})
																	(9... Na5 10. Bc2 {C96 Ruy Lopez, Closed (8...Na5)} 10... c6
																		(10... c5 {C96 Ruy Lopez, Closed (10...c5)} 11. d4 Nc6
																			(11... Nd7 {C96 Ruy Lopez, Closed, Keres (...Nd7) defense})
																			(11... Qc7 {C97 Ruy Lopez, Closed, Chigorin defense} 12. Nbd2 Bd7
																				(12... Nc6 {C98 Ruy Lopez, Closed, Chigorin, 12...Nc6} 13. dxc5 {C98 Ruy Lopez, Closed, Chigorin, Rauzer attack})
																				(12... cxd4 13. cxd4 {C99 Ruy Lopez, Closed, Chigorin, 12...c5d4})
																			13. Nf1 Rfe8 14. Ne3 g6 {C97 Ruy Lopez, Closed, Chigorin, Yugoslav system})
																		{C96 Ruy Lopez, Closed, Borisenko defense})
																	11. d4 Qc7 {C96 Ruy Lopez, Closed, Rossolimo defense})
																{C92 Ruy Lopez, Closed, Keres (9...a5) variation})
															{C90 Ruy Lopez, Closed, Pilnik variation})
														{C89 Ruy Lopez, Marshall counter-attack} 9. exd5 Nxd5
															(9... e4 {C89 Ruy Lopez, Marshall, Herman Steiner variation})
														10. Nxe5 Nxe5 11. Rxe5 c6 {C89 Ruy Lopez, Marshall counter-attack, 11...c6} 12. Bxd5
															(12. d4 {C89 Ruy Lopez, Marshall, Main line, 12.d2d4} 12... Bd6 13. Re1 Qh4 14. g3 Qh3 {C89 Ruy Lopez, Marshall, Main line, 14...Qh3} 15. Be3 Bg4 16. Qd3 Rae8 17. Nd2 Re6 18. a4 Qh5 {C89 Ruy Lopez, Marshall, Main line, Spassky variation})
														12... cxd5 13. d4 Bd6 14. Re3 {C89 Ruy Lopez, Marshall, Kevitz variation})
													{C88 Ruy Lopez, Closed, anti-Marshall 8.a4})
												8. c3
													(8. d4 {C88 Ruy Lopez, Closed, 7...d6, 8.d4} 8... Nxd4 9. Nxd4 exd4 10. Qxd4 c5 {C88 Ruy Lopez, Noah's ark trap})
												8... Na5 9. Bc2 c5 10. d4 Qc7 11. h3
													(11. a4 {C88 Ruy Lopez, Closed, Balla variation})
												11... Nc6 12. d5 Nb8 13. Nbd2 g5 {C88 Ruy Lopez, Closed, Leonhardt variation})
											{C87 Ruy Lopez, Closed, Averbach variation})
										{C84 Ruy Lopez, Closed, centre attack} 6... exd4 7. e5 Ne4 8. c3 {C84 Ruy Lopez, Closed, Basque gambit (North Spanish variation)})
									6. Bb3 Be7
										(6... d6 {C78 Ruy Lopez, ...b5 & ...d6} 7. Ng5 d5 8. exd5 Nd4 9. Re1 Bc5 10. Rxe5+ Kf8 {C78 Ruy Lopez, Rabinovich variation})
										(6... Bb7 {C78 Ruy Lopez, Archangelsk (counterthrust) variation})
									7. a4 {C78 Ruy Lopez, Wing attack})
								{C77 Ruy Lopez, Four knights (Tarrasch) variation})
							{C70 Ruy Lopez, Fianchetto defense deferred})
						{C68 Ruy Lopez, Exchange variation} 4... dxc6 5. d4
							(5. Nc3 {C68 Ruy Lopez, Exchange, Keres variation} 5... f6 6. d3 {C68 Ruy Lopez, Exchange, Romanovsky variation})
							(5. O-O {C69 Ruy Lopez, Exchange variation, 5.O-O} 5... Bg4
								(5... f6 {C69 Ruy Lopez, Exchange, Gligoric variation})
								(5... Qd6 {C69 Ruy Lopez, Exchange, Bronstein variation})
							6. h3 h5 {C69 Ruy Lopez, Exchange variation, Alapin gambit})
						5... exd4 6. Qxd4 Qxd4 7. Nxd4 Bd7 {C68 Ruy Lopez, Exchange, Alekhine variation})
					{C60 Ruy Lopez, Nuernberg variation})
				3... Nxe5 4. d4 {C44 Irish (Chicago) gambit})
			{C40 Gunderam defense})
		{C20 King's pawn, Indian Opening})
	{B06 Robatsch (Modern) defense} 2. d4 Bg7
		(2... Nf6 3. e5 Nh5 4. g4 Ng7 {B06 Norwegian defense})
	{B06 Robatsch (Modern) defense} 3. Nf3
		(3. f4 {B06 Robatsch defense, Three pawns attack})
		(3. Nc3 {B06 Robatsch defense} 3... c6
			(3... d6 {B06 Robatsch (Modern) defense} 4. Nf3
				(4. f4 {B06 Robatsch defense, Pseudo-Austrian attack})
			{B06 Robatsch defense, Two knights variation} 4... c6 {B06 Robatsch defense, Two knights, Suttles variation})
		4. f4 d5 5. e5 h5 {B06 Robatsch defense, Gurgenidze variation})
	3... d6 4. c4
		(4. c3 {B07 Robatsch defense, Geller's system})
	4... Bg4 {A41 Robatsch defense, Rossolimo variation})
{A00 Polish (Sokolsky) opening} 
1... Nh6
	(1... c6 {A00 Polish, Outflank variation})
{A00 Polish, Tuebingen variation} * 
