Sicilian Defense

400 named lines, ECO B20–B99. The main position arises after1. e4 c5.

Line	Games	White / draw / Black
Sicilian Defense (1. e4 c5) B20 · 1. e4 c5	1,231,664	48%48%
Sicilian Defense (1… c5 2. Nf3) B27 · 1. e4 c5 2. Nf3	632,068	48%47%
Alapin Variation B22 · 1. e4 c5 2. c3	81,910	50%45%
Amazon Attack B20 · 1. e4 c5 2. Qg4	146	34%64%
Bowdler Attack B20 · 1. e4 c5 2. Bc4	126,474	46%50%
Brick Variation B20 · 1. e4 c5 2. Nh3	112	41%57%
Closed (1… c5 2. Nc3) B23 · 1. e4 c5 2. Nc3	113,514	49%47%
Czerniak Attack B20 · 1. e4 c5 2. b3	6,160	47%49%
Grob Variation B20 · 1. e4 c5 2. g4	161	46%50%
Keres Variation B20 · 1. e4 c5 2. Ne2	3,358	50%45%
King David's Opening B20 · 1. e4 c5 2. Ke2	112	38%56%
Kronberger Variation B20 · 1. e4 c5 2. Na3	262	41%54%
Lasker-Dunne Attack B20 · 1. e4 c5 2. g3	6,178	49%46%
McDonnell Attack (1… c5 2. f4) B21 · 1. e4 c5 2. f4	59,996	48%48%
Mengarini Variation B20 · 1. e4 c5 2. a3	10,623	49%47%
Myers Attack, with a4 B20 · 1. e4 c5 2. a4	495	47%48%
Myers Attack, with h4 B20 · 1. e4 c5 2. h4	263	46%51%
Smith-Morra Gambit (1… c5 2. d4) B21 · 1. e4 c5 2. d4	103,467	49%47%
Staunton-Cochrane Variation B20 · 1. e4 c5 2. c4	16,998	46%49%
Wing Gambit B20 · 1. e4 c5 2. b4	12,204	48%48%
Brussels Gambit B27 · 1. e4 c5 2. Nf3 f5	166	42%55%
Bücker Variation B27 · 1. e4 c5 2. Nf3 h6	450	55%41%
Closed (2. Nc3 e6) B23 · 1. e4 c5 2. Nc3 e6	23,136	48%47%
Closed, Traditional B23 · 1. e4 c5 2. Nc3 Nc6	52,027	49%47%
Czerniak Attack, Queen Fianchetto Variation B20 · 1. e4 c5 2. b3 b6	52	58%42%
French Variation B40 · 1. e4 c5 2. Nf3 e6	112,202	47%48%
Hyperaccelerated Dragon (2. Nf3 g6) B27 · 1. e4 c5 2. Nf3 g6	30,367	47%48%
Jalalabad Variation B27 · 1. e4 c5 2. Nf3 e5	819	58%38%
Katalimov Variation B27 · 1. e4 c5 2. Nf3 b6	2,289	52%44%
Modern Variations B50 · 1. e4 c5 2. Nf3 d6	175,881	48%47%
Mongoose Variation B27 · 1. e4 c5 2. Nf3 Qa5	338	50%47%
Nimzowitsch Variation B29 · 1. e4 c5 2. Nf3 Nf6	5,566	48%47%
O'Kelly Variation B28 · 1. e4 c5 2. Nf3 a6	15,970	48%48%
Old Sicilian B30 · 1. e4 c5 2. Nf3 Nc6	282,652	49%47%
Polish Gambit B27 · 1. e4 c5 2. Nf3 b5	219	63%34%
Quinteros Variation B27 · 1. e4 c5 2. Nf3 Qc7	490	49%47%
Sicilian Defense (2… d6 3. d4) B50 · 1. e4 c5 2. Nf3 d6 3. d4	88,736	48%47%
Closed (2… e6 3. g3) B23 · 1. e4 c5 2. Nc3 e6 3. g3	2,960	52%43%
Closed, Chameleon Variation B23 · 1. e4 c5 2. Nc3 Nc6 3. Nge2	950	51%43%
Closed, Fianchetto Variation B24 · 1. e4 c5 2. Nc3 Nc6 3. g3	6,272	52%42%
Closed, Grob Attack B23 · 1. e4 c5 2. Nc3 Nc6 3. g4	49	63%37%
Delayed Alapin Variation, with d6 B50 · 1. e4 c5 2. Nf3 d6 3. c3	17,825	50%46%
Delayed Alapin Variation, with e6 B40 · 1. e4 c5 2. Nf3 e6 3. c3	15,108	49%46%
Euwe Attack, Prins Gambit B20 · 1. e4 c5 2. b3 d5 3. Bb2	38	34%61%
French Variation, Westerinen Attack B40 · 1. e4 c5 2. Nf3 e6 3. b3	1,419	45%49%
Grand Prix Attack B23 · 1. e4 c5 2. Nc3 Nc6 3. f4	11,387	50%45%
Halasz Gambit B21 · 1. e4 c5 2. d4 cxd4 3. f4	685	48%48%
Hyperaccelerated Dragon (2… g6 3. d4) B27 · 1. e4 c5 2. Nf3 g6 3. d4	14,552	48%47%
Kopec System B50 · 1. e4 c5 2. Nf3 d6 3. Bd3	185	41%56%
Kramnik Variation B40 · 1. e4 c5 2. Nf3 e6 3. c4	3,000	51%44%
McDonnell Attack, Toilet Variation B21 · 1. e4 c5 2. f4 d5 3. Nc3	352	49%48%
Morphy Gambit B21 · 1. e4 c5 2. d4 cxd4 3. Nf3	10,048	48%48%
Moscow Variation B51 · 1. e4 c5 2. Nf3 d6 3. Bb5+	12,601	49%45%
Nimzowitsch Variation, Advance Variation B29 · 1. e4 c5 2. Nf3 Nf6 3. e5	1,773	49%46%
Nimzowitsch Variation, Closed Variation B29 · 1. e4 c5 2. Nf3 Nf6 3. Nc3	2,051	49%45%
Nyezhmetdinov-Rossolimo Attack B30 · 1. e4 c5 2. Nf3 Nc6 3. Bb5	39,449	50%45%
O'Kelly Variation, Aronin System B28 · 1. e4 c5 2. Nf3 a6 3. Be2	232	56%38%
O'Kelly Variation, Kieseritzky System B28 · 1. e4 c5 2. Nf3 a6 3. b3	145	50%44%
O'Kelly Variation, Maróczy Bind B28 · 1. e4 c5 2. Nf3 a6 3. c4	923	52%42%
O'Kelly Variation, Normal System B28 · 1. e4 c5 2. Nf3 a6 3. d4	6,950	46%49%
O'Kelly Variation, Quiet System B28 · 1. e4 c5 2. Nf3 a6 3. d3	244	44%45%
O'Kelly Variation, Réti System B28 · 1. e4 c5 2. Nf3 a6 3. g3	310	48%46%
O'Kelly Variation, Venice System B28 · 1. e4 c5 2. Nf3 a6 3. c3	2,433	51%44%
O'Kelly Variation, Wing Gambit B28 · 1. e4 c5 2. Nf3 a6 3. b4	83	47%51%
O'Kelly Variation, Yerevan System B28 · 1. e4 c5 2. Nf3 a6 3. Nc3	1,415	48%47%
Open (2… Nc6 3. d4) B32 · 1. e4 c5 2. Nf3 Nc6 3. d4	115,451	49%46%
Portsmouth Gambit B30 · 1. e4 c5 2. Nf3 Nc6 3. b4	2,298	53%44%
Smith-Morra Gambit (2… cxd4 3. c3) B21 · 1. e4 c5 2. d4 cxd4 3. c3	42,232	50%46%
Wing Gambit Deferred B40 · 1. e4 c5 2. Nf3 e6 3. b4	563	49%46%
Wing Gambit, Abrahams Variation B20 · 1. e4 c5 2. b4 cxb4 3. Bb2	409	51%48%
Wing Gambit, Deferred Variation B50 · 1. e4 c5 2. Nf3 d6 3. b4	545	42%52%
Wing Gambit, Marshall Variation B20 · 1. e4 c5 2. b4 cxb4 3. a3	4,099	48%48%
Wing Gambit, Santasiere Variation B20 · 1. e4 c5 2. b4 cxb4 3. c4	22	50%45%
Sicilian Defense (3. d4 cxd4) B50 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4	85,121	48%47%
Acton Extension B27 · 1. e4 c5 2. Nf3 g6 3. c4 Bh6	1	100%
Alapin Variation, Anti-Alapin Gambit B22 · 1. e4 c5 2. c3 d5 3. exd5 Nf6	842	44%50%
Alapin Variation, Barmen Defense (3. exd5 Qxd5) B22 · 1. e4 c5 2. c3 d5 3. exd5 Qxd5	9,386	50%43%
Closed (3. g3 g6) B24 · 1. e4 c5 2. Nc3 Nc6 3. g3 g6	2,876	50%43%
Closed, Anti-Sveshnikov Variation B30 · 1. e4 c5 2. Nf3 Nc6 3. Nc3 e5	2,749	47%48%
Closed, Korchnoi Defense B23 · 1. e4 c5 2. Nc3 e6 3. g3 d5	723	52%42%
Double-Dutch Gambit B27 · 1. e4 c5 2. Nf3 f5 3. exf5 Nh6	1	100%
Drazic Variation B40 · 1. e4 c5 2. Nf3 e6 3. d4 a6	1,504	50%47%
Franco-Sicilian Variation B32 · 1. e4 c5 2. Nf3 Nc6 3. d4 e6	3,238	56%41%
Frederico Variation B27 · 1. e4 c5 2. Nf3 g6 3. d4 f5	–
French Variation, Open B40 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4	47,708	47%49%
Hyperaccelerated Pterodactyl B27 · 1. e4 c5 2. Nf3 g6 3. d4 Bg7	1,691	51%45%
Kotov Gambit B50 · 1. e4 c5 2. Nf3 d6 3. g3 b5	2	100%
Marshall Counterattack B40 · 1. e4 c5 2. Nf3 e6 3. d4 d5	4,136	48%47%
McDonnell Attack (3. Nf3 e6) B21 · 1. e4 c5 2. f4 Nc6 3. Nf3 e6	6,515	47%50%
McDonnell Attack, Tal Gambit B21 · 1. e4 c5 2. f4 d5 3. exd5 Nf6	846	47%48%
Modern Variations, Anti-Qxd4 Move Order B50 · 1. e4 c5 2. Nf3 d6 3. d4 Nf6	1,189	49%46%
Moscow Variation, Main Line B52 · 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7	7,166	49%45%
Nyezhmetdinov-Rossolimo Attack, Brooklyn Retreat Defense B30 · 1. e4 c5 2. Nf3 Nc6 3. Bb5 Nb8	125	48%48%
Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation B31 · 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6	9,127	50%45%
O'Kelly Variation, Maróczy Bind, Paulsen Line B28 · 1. e4 c5 2. Nf3 a6 3. c4 e6	171	54%40%
O'Kelly Variation, Maróczy Bind, Robatsch Line B28 · 1. e4 c5 2. Nf3 a6 3. c4 d6	128	56%35%
O'Kelly Variation, Venice System, Barcza Line B28 · 1. e4 c5 2. Nf3 a6 3. c3 Nf6	139	53%42%
O'Kelly Variation, Venice System, Ljubojevic Line B28 · 1. e4 c5 2. Nf3 a6 3. c3 b5	205	51%44%
O'Kelly Variation, Venice System, Steiner Line B28 · 1. e4 c5 2. Nf3 a6 3. c3 d6	222	50%46%
Open (3. d4 cxd4) B32 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4	107,752	49%46%
Smith-Morra Gambit Accepted B21 · 1. e4 c5 2. d4 cxd4 3. c3 dxc3	27,227	51%45%
Smith-Morra Gambit Declined, Alapin Formation B21 · 1. e4 c5 2. d4 cxd4 3. c3 Nf6	2,836	46%48%
Smith-Morra Gambit Declined, Center Formation B21 · 1. e4 c5 2. d4 cxd4 3. c3 e5	1,187	49%47%
Smith-Morra Gambit Declined, Push Variation B21 · 1. e4 c5 2. d4 cxd4 3. c3 d3	3,508	47%47%
Smith-Morra Gambit Declined, Scandinavian Formation B21 · 1. e4 c5 2. d4 cxd4 3. c3 d5	2,190	46%49%
Smith-Morra Gambit Declined, Wing Formation B21 · 1. e4 c5 2. d4 cxd4 3. c3 Qa5	83	53%47%
Wing Gambit, Carlsbad Variation B20 · 1. e4 c5 2. b4 cxb4 3. a3 bxa3	2,199	49%48%
Big Clamp Formation B20 · 1. e4 c5 2. d3 Nc6 3. c3 d6 4. f4	53	51%45%
Chekhover Variation B53 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4	5,754	49%45%
Closed (3… a6 4. g3) B23 · 1. e4 c5 2. Nc3 e6 3. Nge2 a6 4. g3	209	53%44%
Closed, Portland Attack B23 · 1. e4 c5 2. Nc3 Nc6 3. d3 g6 4. g4	9	33%67%
Kronberger Variation, Nemeth Gambit B20 · 1. e4 c5 2. Na3 Nc6 3. d4 cxd4 4. Bc4	–
McDonnell Attack (3… e6 4. d3) B21 · 1. e4 c5 2. f4 Nc6 3. Nf3 e6 4. d3	499	47%48%
Modern Variations, Tartakower B50 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. c3	2,520	50%45%
Morphy Gambit, Andreaschek Gambit B21 · 1. e4 c5 2. d4 cxd4 3. Nf3 e5 4. c3	186	47%46%
Nyezhmetdinov-Rossolimo Attack, San Francisco Gambit B30 · 1. e4 c5 2. Nf3 Nc6 3. Bb5 Na5 4. b4	3	67%33%
O'Kelly Variation, Normal System, Cortlever Gambit B28 · 1. e4 c5 2. Nf3 a6 3. d4 cxd4 4. Bc4	53	42%57%
O'Kelly Variation, Normal System, Smith-Morra Line B28 · 1. e4 c5 2. Nf3 a6 3. d4 cxd4 4. c3	266	52%45%
O'Kelly Variation, Normal System, Zagorovsky Line B28 · 1. e4 c5 2. Nf3 a6 3. d4 cxd4 4. Qxd4	363	46%50%
Open (3… cxd4 4. Nxd4) B32 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4	101,748	49%46%
Smith-Morra Gambit Accepted, Danish Variation B21 · 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nf3	644	49%48%
Smith-Morra Gambit Declined, Dubois Variation B21 · 1. e4 c5 2. d4 cxd4 3. c3 d3 4. c4	270	50%43%
Smith-Morra Gambit Deferred B40 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. c3	1,660	51%45%
Accelerated Dragon B32 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6	23,755	47%48%
Alapin Variation, Smith-Morra Declined B22 · 1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4	4,283	46%48%
Closed (4. Nf3 d5) B23 · 1. e4 c5 2. Nc3 e6 3. f4 Nc6 4. Nf3 d5	288	50%44%
Closed (4. Bg2 Bg7) B24 · 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7	2,655	50%43%
Dragon Variation, Accelerated Dragon B54 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 g6	2,363	49%46%
Flohr Variation B32 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7	681	52%45%
French Variation, Normal B40 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6	8,973	45%50%
Gloria Variation B20 · 1. e4 c5 2. c4 d6 3. Nc3 Nc6 4. g3 h5	–
Godiva Variation B32 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qb6	1,744	48%48%
Kan Variation B41 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6	15,775	46%50%
Kveinis Variation B40 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Qb6	468	42%51%
Löwenthal Variation B32 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5	27,091	49%46%
McDonnell Attack (4. Bb5 Bg7) B21 · 1. e4 c5 2. f4 Nc6 3. Nf3 g6 4. Bb5 Bg7	554	47%47%
Modern Variations, Anti-Qxd4 Move Order Accepted B50 · 1. e4 c5 2. Nf3 d6 3. d4 Nf6 4. dxc5 Nxe4	274	45%49%
Modern Variations, Main Line B54 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6	56,894	47%48%
Nimzo-American Variation B32 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 d5	751	48%46%
Nimzowitsch Variation, Exchange Variation B29 · 1. e4 c5 2. Nf3 Nf6 3. e5 Nd5 4. Nc3 Nxc3	100	45%47%
O'Kelly Variation, Normal System, Taimanov Line B28 · 1. e4 c5 2. Nf3 a6 3. d4 cxd4 4. Nxd4 e5	1,194	48%48%
O'Kelly Variation, Venice System, Gambit Line B28 · 1. e4 c5 2. Nf3 a6 3. c3 d5 4. exd5 Nf6	53	58%34%
Open (4. Nxd4 Nf6) B33 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6	18,675	47%48%
Paulsen-Basman Defense B40 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Bc5	1,832	45%51%
Smith-Morra Gambit Accepted, Fianchetto Defense (4. Nxc3 g6) B21 · 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 g6	1,627	54%42%
Taimanov Variation (4. Nxd4 Nc6) B44 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6	13,638	48%47%
Accelerated Dragon, Exchange Variation B34 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nxc6	5,814	46%49%
Accelerated Dragon, Maróczy Bind (4… g6 5. c4) B36 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4	2,760	50%43%
Accelerated Dragon, Modern Variation B34 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3	9,829	48%47%
Alapin Variation, Barmen Defense (4… g6 5. Nf3) B22 · 1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 g6 5. Nf3	237	43%48%
Alapin Variation, Barmen Defense (4… Nc6 5. Nf3) B22 · 1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nc6 5. Nf3	1,140	50%44%
Closed (4… d5 5. Bb5) B23 · 1. e4 c5 2. Nc3 e6 3. f4 Nc6 4. Nf3 d5 5. Bb5	152	53%41%
Closed, Carlsen Variation B23 · 1. e4 c5 2. Nc3 d6 3. d4 cxd4 4. Qxd4 Nc6 5. Qd2	281	57%38%
Coles Sicilian Gambit B21 · 1. e4 c5 2. d4 cxd4 3. Qxd4 Nc6 4. Qd1 Nf6 5. Bc4	36	39%58%
Heidenfeld Variation B22 · 1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. Nf3 Nc6 5. Na3	6	50%50%
Kan Variation, Knight Variation (4… a6 5. Nc3) B43 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3	7,827	45%51%
Kan Variation, Maróczy Bind, Réti Variation B41 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. c4	2,981	48%47%
Kan Variation, Modern Variation B42 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3	1,963	49%46%
Modern Variations, Ginsberg Gambit B54 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Bc4	353	48%49%
Moscow Variation, Sokolsky Variation B52 · 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. c4	419	52%39%
Prins Variation B54 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. f3	1,681	55%40%
Taimanov Variation (4… Nc6 5. Nc3) B45 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3	6,483	49%46%
Taimanov Variation, Szén Variation B44 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nb5	631	49%45%
Wing Gambit, Marienbad Variation B20 · 1. e4 c5 2. b4 cxb4 3. a3 d5 4. exd5 Qxd5 5. Bb2	10	60%30%
Accelerated Dragon, Maróczy Bind (5. c4 Bg7) B37 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7	2,203	51%42%
Alapin Variation, Barmen Defense, Modern Line B22 · 1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nf6 5. Nf3 Bg4	755	47%43%
Alapin Variation, Sherzer Variation B40 · 1. e4 c5 2. Nf3 e6 3. c3 Nf6 4. e5 Nd5 5. d4 Nc6	77	53%42%
Chekhover Variation, Zaitsev Defense B53 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 Nc6 5. Bb5 Qd7	3	100%
Classical Variation (5. Nc3 Nc6) B56 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6	4,208	47%46%
Closed (5. d3 d6) B25 · 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6	608	50%43%
Closed, Anti-Sveshnikov Variation, with d6 B30 · 1. e4 c5 2. Nf3 Nc6 3. Nc3 e5 4. Bc4 Be7 5. d3 d6	49	45%45%
Closed, Anti-Sveshnikov Variation, with Nf6 B30 · 1. e4 c5 2. Nf3 Nc6 3. Nc3 e5 4. Bc4 Be7 5. d3 Nf6	79	41%54%
Delayed Alapin Variation (5. d4 Nf6) B22 · 1. e4 c5 2. Nf3 e6 3. c3 d5 4. exd5 Qxd5 5. d4 Nf6	616	45%46%
Dragon Variation (5. Nc3 g6) B70 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6	12,213	47%48%
Four Knights Variation B45 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Nf6	1,159	46%49%
Gaw-Paw Variation B40 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Qb6	46	30%67%
Kalashnikov Variation B32 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 d6	6,144	50%44%
Kan Variation, Maróczy Bind, Hedgehog Variation B41 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. c4 g6	27	63%33%
Kan Variation, Polugaevsky Variation B42 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5	216	56%40%
Kan Variation, Swiss Cheese Variation B42 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 g6	30	53%37%
Kan Variation, Wing Attack B43 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 b5	1,660	43%51%
Kupreichik Variation B56 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bd7	124	45%49%
Lasker-Pelikan Variation B33 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5	6,844	48%46%
McDonnell Attack (5. c3 Nf6) B21 · 1. e4 c5 2. f4 Nc6 3. Nf3 g6 4. Bb5 Bg7 5. c3 Nf6	10	40%60%
Najdorf Variation (5. Nc3 a6) B90 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6	30,757	48%48%
O'Kelly Variation, Maróczy Bind, Geller Line B32 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 a6 5. c4 e5	50	42%54%
Pin Variation B40 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4	1,635	47%50%
Scheveningen Variation B80 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6	938	45%49%
Smith-Morra Gambit Accepted, Fianchetto Defense (4… Nc6 5. Nf3 g6) B21 · 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 g6	1,133	54%42%
Smith-Morra Gambit Accepted, Fianchetto Defense (4… d6 5. Nf3 g6) B21 · 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 d6 5. Nf3 g6	120	49%48%
Smith-Morra Gambit Accepted, Kan Formation B21 · 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 e6 5. Nf3 a6	1,124	49%48%
Taimanov Variation (5. Nc3 a6) B46 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 a6	1,474	49%47%
Taimanov Variation, Bastrikov Variation (5. Nc3 Qc7) B47 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7	1,938	48%46%
Accelerated Dragon, Maróczy Bind (5… Bg7 6. Be3) B38 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Be3	1,937	52%41%
Alapin Variation, Stoltz Attack B22 · 1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. Nf3 Nc6 5. Bc4 Nb6 6. Bb3	267	49%45%
Classical Variation (5… Nc6 6. Be2) B58 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Be2	431	48%45%
Classical Variation, Fianchetto Variation B56 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. g3	47	40%13%47%
Classical Variation, Sozin Attack B57 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4	580	46%47%
Closed (5… d6 6. f4) B25 · 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. f4	213	54%39%
Closed (5… d6 6. Be3) B26 · 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Be3	271	49%42%
Dragon Variation (5… g6 6. Be3) B72 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3	4,859	49%46%
Dragon Variation, Classical Variation (5… g6 6. Be2) B70 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2	1,150	48%47%
Dragon Variation, Fianchetto Variation B70 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. g3	162	57%36%
Dragon Variation, Levenfish Variation B71 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. f4	423	55%40%
Four Knights Variation, Exchange Variation B45 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Nf6 6. Nxc6	170	41%56%
Grand Prix Attack, Schofman Variation B23 · 1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Nf3 Bg7 5. Bc4 e6 6. f5	124	52%43%
Kan Variation, Wing Attack, Fianchetto Variation B40 · 1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. g3 b5 5. d4 cxd4 6. Nxd4	2	50%50%
Lasker-Pelikan Variation, Exchange Variation B33 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Nxc6	993	47%49%
Lasker-Pelikan Variation, Retreat Variation B33 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Nf3	538	40%54%
Lasker-Pelikan Variation, Schlechter Variation B33 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Nb3	730	45%50%
Moscow Variation, Dorfman Gambit B51 · 1. e4 c5 2. Nf3 d6 3. Bb5+ Nc6 4. O-O Bd7 5. Qe2 g6 6. e5	–
Najdorf Variation (5… a6 6. Bg5) B94 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5	7,206	48%48%
Najdorf Variation, Adams Attack B90 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3	1,298	47%47%
Najdorf Variation, Amsterdam Variation B93 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4	678	49%45%
Najdorf Variation, Dekker Gambit B90 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g4	12	50%50%
Najdorf Variation, English Attack (5… a6 6. Be3) B90 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3	5,417	48%47%
Najdorf Variation, Lipnitsky Attack B90 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4	4,134	49%47%
Najdorf Variation, Opocensky Variation (5… a6 6. Be2) B92 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2	3,808	48%46%
Najdorf Variation, Petronić Attack B90 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Rg1	372	51%42%
Najdorf Variation, Yates Variation B90 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bd3	2,553	43%53%
Najdorf Variation, Zagreb Variation B91 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3	494	48%44%
Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation, Gufeld Gambit B31 · 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. c3 e5 6. d4	70	56%39%
Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation, Lutikov Gambit B31 · 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. c3 Nf6 6. d4	29	48%41%
Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation, Totsky Attack B31 · 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. c3 Nf6 6. Qa4	1	100%
Nyezhmetdinov-Rossolimo Attack, Gurgenidze Variation B31 · 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. Re1 e5 6. b4	15	60%33%
Pin Variation, Koch Variation B40 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5	237	50%44%
Prins Variation, Venice Attack B55 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. f3 e5 6. Bb5+	69	59%32%
Richter-Rauzer Variation (5… Nc6 6. Bg5) B60 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5	1,034	48%44%
Scheveningen Variation, Classical Variation (5… d6 6. Be2) B83 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2	124	41%50%
Scheveningen Variation, Fianchetto Variation B80 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3	28	54%46%
Scheveningen Variation, Keres Attack B81 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g4	133	48%45%
Scheveningen Variation, Matanovic Attack B82 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. f4	20	45%45%
Scheveningen Variation, Vitolins Variation B80 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bb5+	60	37%58%
Sozin Attack B86 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4	79	51%47%
Spielmann Variation B56 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Nde2	1	100%
Taimanov Variation, Bastrikov Variation, English Attack B48 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3	891	48%46%
Venice Attack B56 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Bb5+	91	64%33%
Alapin Variation, Barmen Defense, Central Exchange B22 · 1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 cxd4 5. cxd4 Nc6 6. Nf3 Bg4	479	58%36%
Boleslavsky Variation (6. Be2 e5) B58 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Be2 e5	161	46%45%
Classical Variation, Anti-Sozin Variation B57 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 Qb6	65	42%54%
Closed, Anti-Sveshnikov Variation, Kharlov-Kramnik Line B30 · 1. e4 c5 2. Nf3 Nc6 3. Nc3 e5 4. Bc4 Be7 5. d3 d6 6. Nd2 Bg5	1	100%
Closed, Botvinnik Defense, with f4 B25 · 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. f4 e5	19	47%47%
Closed, Botvinnik Defense, with Nge2 B25 · 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Nge2 e5	9	22%67%
Delayed Alapin Variation, Basman-Palatnik Gambit B50 · 1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Be2 Nc6 5. d4 cxd4 6. cxd4 Nxe4	131	62%35%
Dragon Variation, Levenfish Variation, Main Line B71 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. f4 Nbd7	16	69%31%
Four Knights Variation, Cobra Variation B45 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Nf6 6. Ndb5 Bc5	13	31%62%
Four Knights Variation, Sveshnikov Transfer B45 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Nf6 6. Ndb5 d6	47	72%23%
Hyperaccelerated Pterodactyl, Exchange Variation B27 · 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. Nc3 Bxc3+ 6. bxc3 Qxc3+	29	62%38%
Najdorf Variation (6. Bg5 e6) B95 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6	5,017	47%48%
Najdorf Variation, English Attack, Anti-English B90 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 Ng4	341	46%49%
Nimzowitsch Variation, Main Line B29 · 1. e4 c5 2. Nf3 Nf6 3. e5 Nd5 4. Nc3 e6 5. Nxd5 exd5 6. d4 Nc6	27	33%19%48%
Pin Variation, Jaffe Variation B40 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. Bd3 e5	37	41%57%
Richter-Rauzer Variation (6. Bg5 e6) B62 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6	690	47%45%
Richter-Rauzer Variation, Dragon Variation B60 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 g6	44	52%45%
Richter-Rauzer Variation, Modern Variation (6. Bg5 Bd7) B60 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 Bd7	149	40%49%
Scheveningen Variation, Classical Variation (6. Be2 e6) B84 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e6	948	48%46%
Scheveningen Variation, Modern Variation (6. Be2 Nf6) B83 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 d6 6. Be2 Nf6	11	82%18%
Smith-Morra Gambit Accepted, Fianchetto Defense (6. Bc4 g6) B21 · 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 d6 6. Bc4 g6	172	53%44%
Smith-Morra Gambit Accepted, Morphy Defense B21 · 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 Bc5	80	51%46%
Smith-Morra Gambit Accepted, Paulsen Formation B21 · 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 a6	520	50%46%
Smith-Morra Gambit Accepted, Pin Defense B21 · 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 Bb4	562	48%49%
Smith-Morra Gambit Accepted, Scheveningen Formation B21 · 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 d6 6. Bc4 e6	720	51%45%
Smith-Morra Gambit Accepted, Siberian Variation B21 · 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 Qc7	56	45%55%
Smith-Morra Gambit Accepted, Taimanov Formation B21 · 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 e6 5. Bc4 a6 6. Nf3 Ne7	16	44%50%
Sozin Attack, Leonhardt Variation B88 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 e6	192	52%43%
Accelerated Dragon, Modern Bc4 Variation B35 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4	1,186	50%44%
Boleslavsky Variation (6… e5 7. Nb3) B59 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 e5 7. Nb3	60	35%55%
Boleslavsky Variation, Louma Variation B58 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 e5 7. Nxc6	7	29%71%
Closed, Smyslov Variation B24 · 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 e6 6. Be3 Nd4 7. Nce2	12	67%16%17%
Delayed Alapin Variation (6… Bd6 7. d4) B22 · 1. e4 c5 2. Nf3 e6 3. c3 d5 4. exd5 exd5 5. Bb5+ Nc6 6. O-O Bd6 7. d4	3	33%67%
Dragon Variation, Classical Variation (6… Bg7 7. Be2) B72 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. Be2	375	44%51%
Dragon Variation, Yugoslav Attack, Early Deviations B75 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3	2,847	52%43%
Four Knights Variation, American Attack B45 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Nf6 6. Ndb5 Bb4 7. Nd6+	7	29%28%43%
Kan Variation, Knight Variation (6… Bb7 7. Bg2) B43 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 b5 6. g3 Bb7 7. Bg2	48	63%27%
Kan Variation, Wing Attack, Spraggett Attack B43 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 b5 6. Bd3 Qb6 7. Nf3	2	100%
Moscow Variation, Haag Gambit B52 · 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nc6 6. c3 Nf6 7. d4	38	66%24%
Najdorf Variation (6… e6 7. f4) B96 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4	2,800	48%47%
Richter-Rauzer Variation (6… e6 7. Qd3) B62 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd3	42	38%57%
Richter-Rauzer Variation, Exchange Variation B62 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Nxc6	16	31%69%
Richter-Rauzer Variation, Modern Variation (6… Bd7 7. Qd2) B61 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 Bd7 7. Qd2	26	42%50%
Richter-Rauzer Variation, Podebrady Variation B62 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Nb3	4	50%50%
Richter-Rauzer Variation, Traditional Variation B63 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2	437	50%42%
Richter-Rauzer Variation, Vitolins Variation B62 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Bb5	51	47%47%
Scheveningen Variation, Delayed Keres Attack B90 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. g4	55	56%38%
Scheveningen Variation, English Attack, with f3 B90 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. f3	460	52%46%
Scheveningen Variation, English Attack, with Qd2 B80 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. Qd2	139	53%45%
Sozin Attack, Main Line B89 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 e6 7. Be3	41	49%49%
Taimanov Variation, Bastrikov Variation (6… a6 7. Be2) B49 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. Be2	185	45%51%
Wing Gambit, Nanu Gambit B20 · 1. e4 c5 2. b4 cxb4 3. a3 d5 4. exd5 Qxd5 5. Nf3 e5 6. c4 Qe6 7. Bd3	1	100%
Accelerated Dragon, Maróczy Bind, Breyer Variation B39 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Be3 Nf6 7. Nc3 Ng4	136	46%43%
Accelerated Dragon, Maróczy Bind, Gurgenidze Variation B36 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Nf6 6. Nc3 Nxd4 7. Qxd4 d6	139	41%50%
Accelerated Dragon, Simagin Variation B37 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Nc2 d6 7. Be2 Nh6	1	100%
Classical Variation, Dragon Transfer B58 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Be2 Nxd4 7. Qxd4 g6	8	63%38%
Closed, Botvinnik Defense, Edge Variation B25 · 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. f4 e5 7. Nh3 Nge7	2	50%50%
Dragon Variation, Classical Variation (7. Be2 Nc6) B72 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. Be2 Nc6	53	36%60%
Dragon Variation, Modern Bc4 Variation B35 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 d6	73	51%44%
Dragon Variation, Yugoslav Attack (7. f3 O-O) B76 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O	2,233	52%43%
Dragon Variation, Yugoslav Attack, Belezky Line B75 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6	444	52%43%
Dragon Variation, Yugoslav Attack, Hungarian Dragon B75 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Nc6 7. f3 h5	154	43%47%
Kan Variation, Gipslis Variation B42 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Nf6 6. O-O d6 7. c4 g6	2	100%
Kan Variation, Maróczy Bind, Bronstein Variation (7. Bd3 Nc6) B41 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. c4 Nf6 6. Nc3 Bb4 7. Bd3 Nc6	90	46%48%
McDonnell Attack (7. d3 Nf6) B21 · 1. e4 c5 2. f4 Nc6 3. Nf3 g6 4. Bb5 Bg7 5. Bxc6 bxc6 6. O-O d6 7. d3 Nf6	5	20%80%
Najdorf Variation (7. f4 Be7) B98 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7	1,679	49%46%
Najdorf Variation, Neo-Classical Defense B96 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Nc6	41	34%63%
Najdorf Variation, Poisoned Pawn Variation B97 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Qb6	348	43%51%
Najdorf Variation, Polugaevsky Variation B96 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 b5	76	39%59%
Najdorf Variation, Scheveningen Variation B84 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e6 7. O-O Nbd7	17	65%35%
Richter-Rauzer Variation, Classical Variation (7. Qd2 Be7) B63 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 Be7	110	56%37%
Richter-Rauzer Variation, Ivanov Variation B63 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 Qb6	6	33%17%50%
Richter-Rauzer Variation, Neo-Modern Variation, Early Deviations B66 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 a6	300	46%45%
Scheveningen Variation, Classical Variation (7. O-O Qc7) B84 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e6 7. O-O Qc7	29	31%66%
Smith-Morra Gambit Accepted, Chicago Defense (7. O-O a6) B21 · 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 d6 5. Nf3 e6 6. Bc4 Nf6 7. O-O a6	10	50%40%
Smith-Morra Gambit Accepted, Classical Formation B21 · 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 d6 6. Bc4 a6 7. O-O Nf6	225	50%44%
Sozin Attack, Flank Variation B87 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. Bb3 b5	253	50%44%
Wing Gambit, Romanian Defense B20 · 1. e4 c5 2. b4 cxb4 3. a3 d5 4. exd5 Qxd5 5. Nf3 e5 6. Bb2 Nc6 7. c4 Qe6	–
Alapin Variation, Barmen Defense, Milner-Barry Attack B22 · 1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nc6 5. Nf3 cxd4 6. cxd4 e5 7. Nc3 Bb4 8. Be2	3	33%67%
Dragon Variation, Classical Variation (7… Nc6 8. Nb3) B72 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. Be2 Nc6 8. Nb3	4	25%75%
Dragon Variation, Classical Variation (7… Nc6 8. Be3) B73 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 Bg7 7. O-O Nc6 8. Be3	13	46%23%31%
Dragon Variation, Classical Variation, Amsterdam Variation B72 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 g6 7. Be3 Bg7 8. Qd2	21	67%24%
Kan Variation, Maróczy Bind, Bronstein Variation (7… Nc6 8. Bc2) B41 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. c4 Nf6 6. Nc3 Bb4 7. Bd3 Nc6 8. Bc2	–
Kan Variation, Wing Attack, Christiansen's Dream B43 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 b5 6. Bd3 Qb6 7. Be3 Bc5 8. Qg4	–
Magnus Smith Trap B57 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 g6 7. Nxc6 bxc6 8. e5	9	44%56%
Najdorf Variation, English Attack (7… Be6 8. f3) B90 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. f3	670	47%49%
Najdorf Variation, English Attack (7… Be7 8. f3) B90 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be7 8. f3	374	49%45%
Najdorf Variation, English Attack (7… Be6 8. h3) B90 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. h3	41	56%44%
Najdorf Variation, English Attack (7… Be7 8. h3) B90 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be7 8. h3	31	48%45%
Najdorf Variation, Opocensky Variation (7… Be6 8. Be3) B92 · 1. e4 c5 2. Nf3 Nf6 3. Nc3 d6 4. d4 cxd4 5. Nxd4 a6 6. Be2 e5 7. Nb3 Be6 8. Be3	–
Scheveningen Variation, Tal Variation B82 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. f4 Nc6 7. Be3 Be7 8. Qf3	2	100%
Taimanov Variation, Bastrikov Variation, Ponomariov Gambit B47 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Ndb5 Qb8 7. Be3 a6 8. Bb6	9	56%44%
Velimirovic Attack B89 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 e6 7. Be3 Be7 8. Qe2	14	64%36%
Alapin Variation, Stoltz Attack, Ivanchuk Line B22 · 1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. Nf3 Nc6 5. Bc4 Nb6 6. Bb3 c4 7. Bc2 Qc7 8. Qe2 g5	6	50%50%
Dragon Variation, Yugoslav Attack (8. Qd2 Nc6) B76 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6	1,659	51%44%
Lasker-Pelikan Variation, Bird Variation B33 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 Be6	52	48%50%
Lasker-Pelikan Variation, Sveshnikov Variation (8. Na3 b5) B33 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5	1,779	49%42%
Najdorf Variation, Opocensky Variation, Modern Line B92 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. O-O Be6	94	46%47%
Najdorf Variation, Opocensky Variation, Traditional Line B92 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. O-O O-O	197	49%46%
Najdorf Variation, Traditional Line B98 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7	746	46%48%
Richter-Rauzer Variation, Neo-Modern Variation (8. O-O-O Bd7) B67 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 a6 8. O-O-O Bd7	40	55%12%33%
Scheveningen Variation, Classical Variation, Paulsen Variation (8. O-O Nc6) B85 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 e6 7. Be2 Qc7 8. O-O Nc6	–
Smith-Morra Gambit Accepted, Finegold Defense B21 · 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 e6 5. Nf3 d6 6. Bc4 a6 7. O-O Be7 8. Qe2 Nf6	–
Smith-Morra Gambit Accepted, Larsen Defense B21 · 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 Qc7 7. Qe2 a6 8. O-O Bd6	–
Smith-Morra Gambit Accepted, Morphy Defense Deferred B21 · 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 a6 7. O-O b5 8. Bb3 Bc5	3	100%
Smith-Morra Gambit Accepted, Siberian Variation, Siberian Trap B21 · 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 Qc7 7. Qe2 Nf6 8. O-O Ng4	11	36%64%
Smith-Morra Gambit Accepted, Sozin Formation B21 · 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Bc4 e6 6. Nf3 d6 7. O-O a6 8. Qe2 b5	–
Taimanov Variation, Gary Gambit B44 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nb5 d6 6. c4 Nf6 7. N1c3 a6 8. Na3 d5	3	33%34%33%
Delayed Alapin Variation, Basman-Palatnik Double Gambit B50 · 1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Be2 Nc6 5. d4 cxd4 6. cxd4 Nxe4 7. d5 Qa5+ 8. Nc3 Nxc3 9. bxc3	93	55%42%
Dragon Variation, Classical Variation, Battery Variation B73 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 Bg7 7. O-O O-O 8. Be3 Nc6 9. Qd2	27	52%15%33%
Dragon Variation, Classical Variation, Grigoriev Variation B72 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 g6 7. Be3 Bg7 8. Qd2 O-O 9. O-O-O	13	69%16%15%
Dragon Variation, Classical Variation, Normal Line B74 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 Bg7 7. O-O O-O 8. Be3 Nc6 9. Nb3	20	45%50%
Dragon Variation, Yugoslav Attack, Main Line (8… Nc6 9. Bc4) B77 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. Bc4	416	54%40%
Dragon Variation, Yugoslav Attack, Modern Line B76 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 O-O 9. O-O-O	167	49%43%
Dragon Variation, Yugoslav Attack, Panov Variation B76 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. g4	163	54%38%
Lasker-Pelikan Variation, Sveshnikov Variation, Chelyabinsk Variation B33 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5	1,324	47%44%
Moscow Variation, Moscow Gambit B51 · 1. e4 c5 2. Nf3 d6 3. Bb5+ Nc6 4. O-O Bd7 5. c3 Nf6 6. Re1 a6 7. Bxc6 Bxc6 8. d4 Bxe4 9. Bg5	–
Richter-Rauzer Variation, Classical Variation (8… O-O 9. f4) B64 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 Be7 8. O-O-O O-O 9. f4	13	38%16%46%
Scheveningen Variation, Classical Variation, Paulsen Variation (8… d6 9. f4) B85 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be2 a6 7. O-O Nf6 8. Be3 d6 9. f4	2	50%50%
Scheveningen Variation, Delayed Keres Attack, Perenyi Gambit B90 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. g4 e5 8. Nf5 g6 9. g5	2	50%50%
Scheveningen Variation, Modern Variation (8… Nc6 9. Be3) B83 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 Be7 7. O-O O-O 8. f4 Nc6 9. Be3	2	100%
Sozin Attack, Fischer Variation B88 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 e6 7. Bb3 Be7 8. Be3 O-O 9. f4	2	100%
Alapin Variation, Barmen Defense, Endgame Variation B22 · 1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 cxd4 5. cxd4 Nc6 6. Nf3 Bg4 7. Nc3 Bxf3 8. gxf3 Qxd4 9. Qxd4 Nxd4	20	45%15%40%
Dragon Variation, Classical Variation, Alekhine Line B74 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Be2 O-O 8. O-O d6 9. Nb3 a5	1	100%
Dragon Variation, Yugoslav Attack, Byrne Variation B77 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. Bc4 a5	–
Dragon Variation, Yugoslav Attack, Main Line (9. Bc4 Bd7) B77 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. Bc4 Bd7	296	54%40%
Dragon Variation, Yugoslav Attack, Sosonko Variation B77 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 O-O 9. Bc4 Nd7	1	100%
Najdorf Variation, Browne Variation B98 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 h6 9. Bh4 Qc7	32	31%66%
Najdorf Variation, Goteborg Variation B98 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 h6 9. Bh4 g5	13	38%62%
Najdorf Variation, Main Line B99 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7	449	47%46%
Najdorf Variation, Poisoned Pawn Accepted B97 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Qb6 8. Qd2 Qxb2 9. Rb1 Qa3	130	37%55%
Richter-Rauzer Variation, Classical Variation (9. f4 e5) B64 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 Be7 8. O-O-O O-O 9. f4 e5	1	100%
Richter-Rauzer Variation, Neo-Modern Variation (9. f4 Be7) B68 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 a6 8. O-O-O Bd7 9. f4 Be7	6	33%17%50%
Richter-Rauzer Variation, Rauzer Attack B65 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 Be7 8. O-O-O O-O 9. f4 Nxd4	7	29%14%57%
Smith-Morra Gambit Accepted, Chicago Defense (9. Bb3 Ra7) B21 · 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Bc4 e6 6. Nf3 d6 7. O-O a6 8. Qe2 b5 9. Bb3 Ra7	–
Dragon Variation, Classical Variation, Zollner Gambit B73 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Be3 Bg7 6. Be2 Nf6 7. Nc3 O-O 8. O-O d6 9. f4 Qb6 10. e5	1	100%
Dragon Variation, Yugoslav Attack (9… Bd7 10. O-O-O) B78 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. Bc4 Bd7 10. O-O-O	211	56%39%
Dragon Variation, Yugoslav Attack, Main Line (9… Bd7 10. Bb3) B77 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. Bc4 Bd7 10. Bb3	36	53%39%
Najdorf Variation, Polugaevsky Variation, Simagin Line B96 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 b5 8. e5 dxe5 9. fxe5 Qc7 10. Qe2	5	60%40%
Richter-Rauzer Variation, Classical Variation (9… Nxd4 10. Qxd4) B65 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 Be7 8. O-O-O O-O 9. f4 Nxd4 10. Qxd4	7	29%14%57%
Scheveningen Variation, Classical Variation, Paulsen Variation (9… d6 10. a4) B85 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be2 a6 7. O-O Nf6 8. Kh1 Be7 9. f4 d6 10. a4	1	100%
Scheveningen Variation, Modern Variation (9… Bd7 10. Nb3) B83 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 Be7 7. O-O O-O 8. f4 Nc6 9. Be3 Bd7 10. Nb3	–
Dragon Variation, Classical Variation, Maróczy Line B74 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 Bg7 7. O-O O-O 8. Be3 Nc6 9. Nb3 Be6 10. f4 Na5	–
Dragon Variation, Classical Variation, Tartakower Line B74 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 Bg7 7. O-O O-O 8. Be3 Nc6 9. Nb3 Be6 10. f4 Qc8	–
Dragon Variation, Yugoslav Attack, Chinese Dragon B78 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. Bc4 Bd7 10. O-O-O Rb8	25	52%44%
Dragon Variation, Yugoslav Attack, Czerniak Variation (10. Bxd4 Be6) B77 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 O-O 9. Bc4 Nxd4 10. Bxd4 Be6	1	100%
Dragon Variation, Yugoslav Attack, Old Line B78 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. Bc4 Bd7 10. O-O-O Rc8	119	55%39%
Lasker-Pelikan Variation, Sveshnikov Variation (10. Nd5 f5) B33 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Bxf6 gxf6 10. Nd5 f5	172	56%40%
Lasker-Pelikan Variation, Sveshnikov Variation, Novosibirsk Variation B33 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Bxf6 gxf6 10. Nd5 Bg7	162	55%35%
Richter-Rauzer Variation, Classical Variation, Kantscher Line B63 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 Be7 8. O-O-O Nxd4 9. Qxd4 a6 10. f4 b5	–
Scheveningen Variation, Classical Main Line B85 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be2 a6 7. O-O Nf6 8. Be3 Be7 9. f4 d6 10. Qe1 O-O	4	75%25%
Sozin Attack, Main Line, Sherbakov Variation B89 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 e6 7. Be3 Be7 8. Bb3 O-O 9. O-O Na5 10. f4 b6	–
Taimanov Variation, Modern Line B44 · 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nb5 d6 6. c4 Nf6 7. N1c3 a6 8. Na3 Be7 9. Be2 O-O 10. O-O b6	3	33%67%
Lasker-Pelikan Variation, Sveshnikov Variation, Peresypkin's Sacrifice B33 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Bxf6 gxf6 10. Nd5 f5 11. Bxb5	23	52%43%
Richter-Rauzer Variation, Neo-Modern Variation, Nyezhmetdinov Attack B69 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 a6 8. O-O-O Bd7 9. f4 Be7 10. Nf3 b5 11. Bxf6	–
Dragon Variation, Yugoslav Attack, Czerniak Variation (11. Bb3 Qa5) B77 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 O-O 9. Bc4 Nxd4 10. Bxd4 Be6 11. Bb3 Qa5	–
Dragon Variation, Classical Variation, Spielmann Variation B74 · 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Be2 O-O 8. Nb3 d6 9. O-O Be6 10. f4 Na5 11. f5 Bc4 12. Bd3	–
Dragon Variation, Yugoslav Attack (11… Rfc8 12. Bb3) B79 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. Bc4 Bd7 10. h4 Qa5 11. O-O-O Rfc8 12. Bb3	1	100%
Dragon Variation, Yugoslav Attack, Topalov Variation B78 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. Bc4 Bd7 10. O-O-O Rc8 11. Bb3 Nxd4 12. Bxd4	34	47%12%41%
Najdorf Variation, Ivkov Variation B94 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7 7. Bc4 Qa5 8. Qd2 e6 9. O-O-O b5 10. Bb3 Bb7 11. Rhe1 Nc5 12. e5	–
Dragon Variation, Yugoslav Attack, Soltis Variation B79 · 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. Bc4 Bd7 10. O-O-O Qa5 11. h4 Rfc8 12. Bb3 h5	–
Dragon Variation, Classical Variation, Bernard Defense B74 · 1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 Bg7 7. O-O O-O 8. Be3 Nc6 9. Nb3 Be6 10. f4 Na5 11. f5 Bc4 12. Bd3 Bxd3 13. cxd3 d5	–
Dragon Variation, Classical Variation, Stockholm Attack B74 · 1. e4 c5 2. Nc3 d6 3. f4 Nc6 4. Nf3 g6 5. d4 cxd4 6. Nxd4 Bg7 7. Be3 Nf6 8. Be2 O-O 9. Nb3 Be6 10. O-O Na5 11. f5 Bc4 12. Nxa5 Bxe2 13. Qxe2 Qxa5 14. g4	–