CCRL 40/4

Opening statistics

This page shows how many games in our database were played from various known openings. The table also shows average draw percentage and white score we observed in our games.

ECO	Opening	Number of games	Draws	White score	Bare PGN
B02	Alekhine's defence	18	33.3%	66.7%	0.01 MB
B03	Alekhine's defence	14	35.7%	53.6%	0.00 MB
B03	Alekhine's defence, Balogh variation	12	25.0%	54.2%	0.00 MB
B02	Alekhine's defence, Brooklyn defence	1	0.0%	100.0%	0.00 MB
B02	Alekhine's defence, Krejcik variation	3	100.0%	50.0%	0.00 MB
B02	Alekhine's defence, Maroczy variation	10	60.0%	40.0%	0.00 MB
B02	Alekhine's defence, Saemisch attack	13	23.1%	57.7%	0.00 MB
B02	Alekhine's defence, Scandinavian variation	30	36.7%	45.0%	0.01 MB
B02	Alekhine's defence, Spielmann variation	1	0.0%	100.0%	0.00 MB
B02	Alekhine's defence, Two pawns' (Lasker's) attack	16	50.0%	62.5%	0.01 MB
B03	Alekhine's defence, exchange variation	197	34.5%	58.9%	0.04 MB
B03	Alekhine's defence, exchange, Karpov variation	2	50.0%	75.0%	0.00 MB
B03	Alekhine's defence, four pawns attack	9	22.2%	55.6%	0.00 MB
B03	Alekhine's defence, four pawns attack, 7.Be3	23	34.8%	60.9%	0.01 MB
B03	Alekhine's defence, four pawns attack, Ilyin-Genevsky var.	1	0.0%	0.0%	0.00 MB
B03	Alekhine's defence, four pawns attack, Trifunovic variation	2	0.0%	100.0%	0.00 MB
B03	Alekhine's defence, four pawns attack, fianchetto variation	8	37.5%	68.8%	0.00 MB
B04	Alekhine's defence, modern variation	79	26.6%	63.9%	0.02 MB
B05	Alekhine's defence, modern variation, 4...Bg4	152	30.3%	63.2%	0.03 MB
B05	Alekhine's defence, modern, Alekhine variation	1	100.0%	50.0%	0.00 MB
B05	Alekhine's defence, modern, Flohr variation	63	41.3%	61.9%	0.02 MB
B04	Alekhine's defence, modern, Keres variation	44	34.1%	62.5%	0.01 MB
B04	Alekhine's defence, modern, Larsen variation	183	32.2%	58.7%	0.04 MB
B05	Alekhine's defence, modern, Panov variation	1	100.0%	50.0%	0.00 MB
B04	Alekhine's defence, modern, Schmid variation	84	26.2%	63.1%	0.02 MB
B04	Alekhine's defence, modern, fianchetto variation	146	35.6%	61.6%	0.04 MB
A00	Amsterdam attack	3	0.0%	66.7%	0.00 MB
A40	Beefeater defence	33	27.3%	62.1%	0.01 MB
A57	Benko gambit	227	27.8%	58.4%	0.05 MB
A59	Benko gambit	24	29.2%	68.8%	0.01 MB
A58	Benko gambit accepted	476	30.3%	58.0%	0.10 MB
A57	Benko gambit half accepted	571	32.0%	57.5%	0.11 MB
A59	Benko gambit, 7.e4	9	55.6%	50.0%	0.00 MB
A58	Benko gambit, Nd2 variation	5	0.0%	40.0%	0.00 MB
A59	Benko gambit, Ne2 variation	12	41.7%	62.5%	0.00 MB
A57	Benko gambit, Nescafe Frappe attack	2	50.0%	25.0%	0.00 MB
A57	Benko gambit, Zaitsev system	36	19.4%	59.7%	0.01 MB
A58	Benko gambit, fianchetto variation	247	21.5%	58.5%	0.05 MB
A59	Benko gambit, main line	342	33.3%	56.7%	0.07 MB
A00	Benko's opening	405	35.1%	50.9%	0.09 MB
A00	Benko's opening, reversed Alekhine	1	0.0%	0.0%	0.00 MB
A56	Benoni defence	574	26.1%	62.4%	0.11 MB
A60	Benoni defence	58	36.2%	45.7%	0.01 MB
A61	Benoni defence	306	27.8%	60.0%	0.06 MB
A56	Benoni defence, Hromodka system	116	24.1%	61.2%	0.03 MB
A65	Benoni, 6.e4	35	28.6%	54.3%	0.01 MB
A61	Benoni, Nimzovich (knight's tour) variation	279	28.0%	60.6%	0.06 MB
A67	Benoni, Taimanov variation	30	30.0%	58.3%	0.01 MB
A61	Benoni, Uhlmann variation	40	27.5%	51.3%	0.01 MB
A78	Benoni, classical with ...Re8 and ...Na6	31	29.0%	62.9%	0.01 MB
A75	Benoni, classical with ...a6 and 10...Bg4	43	32.6%	51.2%	0.01 MB
A70	Benoni, classical with e4 and Nf3	499	30.1%	60.1%	0.11 MB
A72	Benoni, classical without 9.O-O	47	25.5%	63.8%	0.01 MB
A79	Benoni, classical, 11.f3	81	17.3%	69.1%	0.02 MB
A71	Benoni, classical, 8.Bg5	58	22.4%	56.0%	0.01 MB
A76	Benoni, classical, 9...Re8	24	25.0%	58.3%	0.01 MB
A77	Benoni, classical, 9...Re8, 10.Nd2	109	25.7%	47.7%	0.02 MB
A74	Benoni, classical, 9...a6, 10.a4	5	20.0%	90.0%	0.00 MB
A73	Benoni, classical, 9.O-O	15	26.7%	46.7%	0.00 MB
A61	Benoni, fianchetto variation	2	0.0%	50.0%	0.00 MB
A62	Benoni, fianchetto variation	172	26.7%	58.7%	0.04 MB
A64	Benoni, fianchetto, 11...Re8	109	28.4%	52.8%	0.02 MB
A63	Benoni, fianchetto, 9...Nbd7	26	46.2%	57.7%	0.01 MB
A68	Benoni, four pawns attack	3	0.0%	66.7%	0.00 MB
A69	Benoni, four pawns attack, main line	36	27.8%	33.3%	0.01 MB
A66	Benoni, pawn storm variation	2	50.0%	25.0%	0.00 MB
A03	Bird's opening	2	100.0%	50.0%	0.00 MB
A03	Bird's opening, Williams gambit	2	50.0%	25.0%	0.00 MB
C23	Bishop's opening	45	31.1%	55.6%	0.01 MB
C24	Bishop's opening, Berlin defence	139	32.4%	57.2%	0.03 MB
C23	Bishop's opening, Classical variation	15	20.0%	56.7%	0.00 MB
C23	Bishop's opening, Philidor counter-attack	23	47.8%	71.7%	0.01 MB
C23	Bishop's opening, Philidor variation	4	50.0%	50.0%	0.00 MB
C24	Bishop's opening, Urusov gambit	1	0.0%	0.0%	0.00 MB
A45	Blackmar-Diemer gambit	32	28.1%	57.8%	0.01 MB
E10	Blumenfeld counter-gambit	31	25.8%	61.3%	0.01 MB
E10	Blumenfeld counter-gambit accepted	20	35.0%	52.5%	0.01 MB
E10	Blumenfeld counter-gambit, Dus-Chotimursky variation	109	23.9%	58.7%	0.03 MB
E10	Blumenfeld counter-gambit, Spielmann variation	11	27.3%	68.2%	0.00 MB
C27	Boden-Kieseritsky gambit, Lichtenhein defence	2	50.0%	25.0%	0.00 MB
E11	Bogo-Indian defence	676	35.7%	56.7%	0.15 MB
E11	Bogo-Indian defence, Gruenfeld variation	806	33.1%	56.4%	0.17 MB
E11	Bogo-Indian defence, Monticelli trap	2	0.0%	50.0%	0.00 MB
E11	Bogo-Indian defence, Nimzovich variation	1089	32.0%	55.9%	0.23 MB
A52	Budapest, Adler variation	8	50.0%	75.0%	0.00 MB
A51	Budapest, Fajarowicz variation	3	0.0%	66.7%	0.00 MB
A52	Budapest, Rubinstein variation	8	25.0%	75.0%	0.00 MB
B10	Caro-Kann defence	739	25.7%	51.8%	0.14 MB
B12	Caro-Kann defence	75	33.3%	56.7%	0.02 MB
B15	Caro-Kann defence	77	29.9%	44.8%	0.02 MB
B12	Caro-Kann, 3.Nd2	74	20.3%	62.8%	0.02 MB
B15	Caro-Kann, Alekhine gambit	4	50.0%	50.0%	0.00 MB
B16	Caro-Kann, Bronstein-Larsen variation	85	22.4%	67.6%	0.02 MB
B12	Caro-Kann, Edinburgh variation	14	28.6%	50.0%	0.00 MB
B15	Caro-Kann, Forgacs variation	17	58.8%	41.2%	0.01 MB
B10	Caro-Kann, Goldman (Spielmann) variation	4	25.0%	62.5%	0.00 MB
B15	Caro-Kann, Gurgenidze system	120	36.7%	56.7%	0.03 MB
B13	Caro-Kann, Panov-Botvinnik attack	201	34.3%	53.5%	0.04 MB
B14	Caro-Kann, Panov-Botvinnik attack, 5...e6	866	37.4%	54.0%	0.19 MB
B14	Caro-Kann, Panov-Botvinnik attack, 5...g6	108	42.6%	58.3%	0.03 MB
B13	Caro-Kann, Panov-Botvinnik, Czerniak variation	7	14.3%	35.7%	0.00 MB
B13	Caro-Kann, Panov-Botvinnik, Gunderam attack	1	0.0%	100.0%	0.00 MB
B13	Caro-Kann, Panov-Botvinnik, Herzog defence	6	33.3%	50.0%	0.00 MB
B13	Caro-Kann, Panov-Botvinnik, Reifir (Spielmann) variation	2	50.0%	75.0%	0.00 MB
B13	Caro-Kann, Panov-Botvinnik, normal variation	39	41.0%	61.5%	0.01 MB
B15	Caro-Kann, Rasa-Studier gambit	2	100.0%	50.0%	0.00 MB
B17	Caro-Kann, Steinitz variation	1486	32.8%	53.2%	0.32 MB
B15	Caro-Kann, Tartakower (Nimzovich) variation	42	26.2%	53.6%	0.01 MB
B12	Caro-Kann, Tartakower (fantasy) variation	188	37.2%	51.1%	0.04 MB
B10	Caro-Kann, Two knights variation	108	25.0%	59.7%	0.03 MB
B11	Caro-Kann, Two knights, 3...Bg4	118	31.4%	49.6%	0.03 MB
B12	Caro-Kann, advance variation	1878	30.5%	55.9%	0.39 MB
B12	Caro-Kann, advance, Short variation	5	20.0%	50.0%	0.00 MB
B10	Caro-Kann, anti-Caro-Kann defence	280	28.9%	55.2%	0.06 MB
B10	Caro-Kann, anti-anti-Caro-Kann defence	454	47.1%	51.5%	0.10 MB
B18	Caro-Kann, classical variation	149	24.8%	55.4%	0.03 MB
B18	Caro-Kann, classical, 6.h4	222	32.4%	55.4%	0.05 MB
B19	Caro-Kann, classical, 7...Nd7	21	33.3%	59.5%	0.01 MB
B18	Caro-Kann, classical, Flohr variation	19	42.1%	52.6%	0.01 MB
B18	Caro-Kann, classical, Maroczy attack	7	28.6%	57.1%	0.00 MB
B19	Caro-Kann, classical, Spassky variation	2170	30.2%	58.6%	0.42 MB
B10	Caro-Kann, closed (Breyer) variation	64	32.8%	53.9%	0.02 MB
B13	Caro-Kann, exchange variation	132	27.3%	52.3%	0.03 MB
B13	Caro-Kann, exchange, Rubinstein variation	34	47.1%	61.8%	0.01 MB
E00	Catalan opening	1075	31.9%	54.1%	0.24 MB
E01	Catalan, closed	123	41.5%	53.3%	0.03 MB
E06	Catalan, closed, 5.Nf3	1293	39.1%	53.6%	0.28 MB
E07	Catalan, closed, 6...Nbd7	20	25.0%	42.5%	0.01 MB
E08	Catalan, closed, 7.Qc2	42	35.7%	46.4%	0.01 MB
E07	Catalan, closed, Botvinnik variation	16	12.5%	56.3%	0.01 MB
E08	Catalan, closed, Qc2 & b3	106	36.8%	60.8%	0.03 MB
E09	Catalan, closed, Sokolsky variation	1	0.0%	100.0%	0.00 MB
E08	Catalan, closed, Spassky gambit	1	0.0%	100.0%	0.00 MB
E09	Catalan, closed, main line	97	36.1%	54.1%	0.03 MB
E04	Catalan, open, 5.Nf3	2318	36.5%	52.8%	0.44 MB
E02	Catalan, open, 5.Qa4	14	28.6%	71.4%	0.00 MB
E03	Catalan, open, 5.Qa4 Nbd7, 6.Qxc4	6	50.0%	25.0%	0.00 MB
E05	Catalan, open, classical line	64	42.2%	46.1%	0.02 MB
C21	Centre game	126	46.8%	65.5%	0.03 MB
C22	Centre game	1	0.0%	100.0%	0.00 MB
C22	Centre game, Berger variation	131	19.8%	63.4%	0.02 MB
C22	Centre game, Charousek variation	1	0.0%	100.0%	0.00 MB
C22	Centre game, Paulsen attack	1	0.0%	0.0%	0.00 MB
D05	Colle system	18	38.9%	58.3%	0.01 MB
A56	Czech Benoni defence	90	27.8%	69.4%	0.02 MB
A56	Czech Benoni, King's Indian system	17	47.1%	64.7%	0.01 MB
C21	Danish gambit, Soerensen defence	4	25.0%	62.5%	0.00 MB
E10	Doery defence	4	0.0%	25.0%	0.00 MB
C44	Dresden opening	1	0.0%	0.0%	0.00 MB
A00	Dunst (Sleipner, Heinrichsen) opening	10	40.0%	40.0%	0.00 MB
A80	Dutch	400	32.0%	55.3%	0.09 MB
A81	Dutch defence	839	32.7%	61.6%	0.18 MB
A84	Dutch defence	254	29.9%	62.2%	0.06 MB
A90	Dutch defence	346	21.4%	61.3%	0.08 MB
A91	Dutch defence	22	22.7%	61.4%	0.01 MB
A92	Dutch defence	11	18.2%	63.6%	0.00 MB
A92	Dutch defence, Alekhine variation	18	44.4%	61.1%	0.01 MB
A81	Dutch defence, Blackburne variation	9	11.1%	72.2%	0.00 MB
A90	Dutch defence, Dutch-Indian (Nimzo-Dutch) variation	48	27.1%	67.7%	0.01 MB
A84	Dutch defence, Rubinstein variation	97	21.6%	55.2%	0.02 MB
A85	Dutch with c4 & Nc3	49	36.7%	63.3%	0.01 MB
A86	Dutch with c4 & g3	9	33.3%	61.1%	0.00 MB
A80	Dutch, 2.Bg5 variation	110	31.8%	48.6%	0.03 MB
A97	Dutch, Ilyin-Genevsky variation	5	20.0%	70.0%	0.00 MB
A98	Dutch, Ilyin-Genevsky variation with Qc2	13	38.5%	57.7%	0.00 MB
A99	Dutch, Ilyin-Genevsky variation with b3	52	23.1%	69.2%	0.01 MB
A97	Dutch, Ilyin-Genevsky, Winter variation	20	30.0%	45.0%	0.01 MB
A86	Dutch, Leningrad variation	25	40.0%	60.0%	0.01 MB
A87	Dutch, Leningrad, main variation	131	29.8%	56.1%	0.03 MB
A89	Dutch, Leningrad, main variation with Nc6	148	29.7%	58.1%	0.03 MB
A88	Dutch, Leningrad, main variation with c6	197	35.0%	57.6%	0.05 MB
A80	Dutch, Manhattan (Alapin, Ulvestad) variation	1	0.0%	0.0%	0.00 MB
A82	Dutch, Staunton gambit	3	0.0%	100.0%	0.00 MB
A84	Dutch, Staunton gambit deferred	4	25.0%	12.5%	0.00 MB
A83	Dutch, Staunton gambit, Chigorin variation	1	100.0%	50.0%	0.00 MB
A83	Dutch, Staunton gambit, Nimzovich variation	1	0.0%	100.0%	0.00 MB
A83	Dutch, Staunton gambit, Staunton's line	11	36.4%	72.7%	0.00 MB
A96	Dutch, classical variation	63	17.5%	69.0%	0.02 MB
A92	Dutch, stonewall variation	15	26.7%	53.3%	0.01 MB
A94	Dutch, stonewall with Ba3	18	38.9%	47.2%	0.01 MB
A92	Dutch, stonewall with Nc3	1	0.0%	100.0%	0.00 MB
A95	Dutch, stonewall with Nc3	43	25.6%	52.3%	0.01 MB
A93	Dutch, stonewall, Botwinnik variation	31	29.0%	59.7%	0.01 MB
A95	Dutch, stonewall: Chekhover variation	7	14.3%	64.3%	0.00 MB
A90	Dutch-Indian, Alekhine variation	25	48.0%	44.0%	0.01 MB
E10	Dzindzikhashvili defence	26	50.0%	40.4%	0.01 MB
A10	English opening	787	33.0%	53.6%	0.17 MB
A13	English opening	842	32.9%	54.5%	0.18 MB
A15	English opening	1835	32.8%	55.1%	0.40 MB
A16	English opening	187	32.1%	55.6%	0.05 MB
A17	English opening	56	30.4%	52.7%	0.01 MB
A20	English opening	2159	33.9%	54.9%	0.43 MB
A21	English opening	525	28.2%	55.0%	0.11 MB
A22	English opening	153	28.1%	51.3%	0.04 MB
A13	English opening, Agincourt variation	459	33.1%	53.6%	0.11 MB
A15	English, 1...Nf6 (Anglo-Indian defense)	235	33.2%	49.8%	0.06 MB
A10	English, Adorjan defence	9	33.3%	50.0%	0.00 MB
A10	English, Anglo-Dutch defense	170	35.3%	52.9%	0.04 MB
A16	English, Anglo-Gruenfeld defense	21	42.9%	50.0%	0.01 MB
A16	English, Anglo-Gruenfeld defense, Korchnoi variation	1	100.0%	50.0%	0.00 MB
A16	English, Anglo-Gruenfeld, Czech defense	9	22.2%	66.7%	0.00 MB
A16	English, Anglo-Gruenfeld, Smyslov defense	9	44.4%	55.6%	0.00 MB
A22	English, Bellon gambit	1	0.0%	100.0%	0.00 MB
A12	English, Bled variation	7	28.6%	42.9%	0.00 MB
A26	English, Botvinnik system	132	34.8%	50.0%	0.03 MB
A28	English, Bradley Beach variation	15	20.0%	36.7%	0.00 MB
A24	English, Bremen system with ...g6	10	0.0%	80.0%	0.00 MB
A23	English, Bremen system, Keres variation	94	35.1%	52.7%	0.02 MB
A22	English, Bremen, Smyslov system	636	34.7%	50.1%	0.14 MB
A22	English, Bremen, reverse dragon	283	34.6%	50.5%	0.06 MB
A12	English, Capablanca's variation	24	29.2%	43.8%	0.01 MB
A22	English, Carls' Bremen system	75	28.0%	59.3%	0.02 MB
A11	English, Caro-Kann defensive system	210	30.0%	53.1%	0.05 MB
A12	English, Caro-Kann defensive system	25	28.0%	74.0%	0.01 MB
A12	English, Caro-Kann defensive system, Bogolyubov variation	23	26.1%	78.3%	0.01 MB
A21	English, Keres variation	2	50.0%	75.0%	0.00 MB
A21	English, Kramnik-Shirov counterattack	328	35.4%	48.2%	0.07 MB
A13	English, Kurajica defence	37	27.0%	35.1%	0.01 MB
A12	English, London defensive system	10	30.0%	45.0%	0.00 MB
A18	English, Mikenas-Carls variation	5	40.0%	80.0%	0.00 MB
A18	English, Mikenas-Carls, Flohr variation	7	28.6%	71.4%	0.00 MB
A18	English, Mikenas-Carls, Kevitz variation	2	0.0%	0.0%	0.00 MB
A19	English, Mikenas-Carls, Sicilian variation	36	30.6%	59.7%	0.01 MB
A28	English, Nenarokov variation	13	61.5%	53.8%	0.00 MB
A13	English, Neo-Catalan	110	35.5%	54.1%	0.03 MB
A13	English, Neo-Catalan accepted	210	31.0%	57.4%	0.05 MB
A14	English, Neo-Catalan declined	175	40.6%	48.3%	0.04 MB
A12	English, New York (London) defensive system	6	33.3%	50.0%	0.00 MB
A17	English, Nimzo-English opening	281	31.7%	54.6%	0.07 MB
A20	English, Nimzovich variation	13	23.1%	73.1%	0.01 MB
A20	English, Nimzovich, Flohr variation	41	31.7%	40.2%	0.01 MB
A17	English, Queens Indian formation	31	29.0%	56.5%	0.01 MB
A17	English, Queens Indian, Romanishin variation	8	37.5%	56.3%	0.00 MB
A13	English, Romanishin gambit	27	55.6%	53.7%	0.01 MB
A25	English, Sicilian reversed	219	29.7%	53.2%	0.05 MB
A21	English, Smyslov defence	6	33.3%	50.0%	0.00 MB
A14	English, Symmetrical, Keres defence	255	38.0%	59.0%	0.06 MB
A12	English, Torre defensive system	17	47.1%	52.9%	0.00 MB
A21	English, Troeger defence	59	30.5%	52.5%	0.02 MB
A13	English, Wimpey system	26	15.4%	53.8%	0.01 MB
A25	English, closed system	419	31.5%	56.6%	0.09 MB
A26	English, closed system	108	30.6%	61.6%	0.03 MB
A25	English, closed system (without ...d6)	41	34.1%	56.1%	0.01 MB
A25	English, closed, 5.Rb1	169	34.9%	51.8%	0.04 MB
A25	English, closed, Hort variation	9	33.3%	72.2%	0.00 MB
A25	English, closed, Taimanov variation	7	0.0%	57.1%	0.00 MB
A28	English, four knights system	68	33.8%	46.3%	0.02 MB
A28	English, four knights, 4.e3	196	36.7%	55.1%	0.05 MB
A28	English, four knights, Capablanca variation	121	37.2%	52.5%	0.03 MB
A28	English, four knights, Marini variation	207	35.7%	55.6%	0.05 MB
A28	English, four knights, Nimzovich variation	85	43.5%	54.7%	0.02 MB
A28	English, four knights, Romanishin variation	332	36.4%	53.5%	0.07 MB
A28	English, four knights, Stean variation	54	33.3%	50.0%	0.01 MB
A29	English, four knights, kingside fianchetto	3646	34.2%	51.2%	0.74 MB
A30	English, symmetrical variation	1497	32.7%	51.7%	0.32 MB
A32	English, symmetrical variation	69	37.7%	49.3%	0.02 MB
A33	English, symmetrical variation	342	35.7%	51.2%	0.08 MB
A34	English, symmetrical variation	392	28.8%	52.2%	0.09 MB
A35	English, symmetrical variation	80	28.8%	58.1%	0.02 MB
A36	English, symmetrical variation	32	15.6%	70.3%	0.01 MB
A37	English, symmetrical variation	150	29.3%	54.0%	0.04 MB
A38	English, symmetrical variation	188	37.2%	52.1%	0.04 MB
A31	English, symmetrical, Benoni formation	292	34.9%	51.0%	0.07 MB
A36	English, symmetrical, Botvinnik system	26	19.2%	59.6%	0.01 MB
A36	English, symmetrical, Botvinnik system reversed	29	41.4%	55.2%	0.01 MB
A37	English, symmetrical, Botvinnik system reversed	160	34.4%	54.1%	0.04 MB
A33	English, symmetrical, Geller variation	457	29.1%	55.3%	0.10 MB
A34	English, symmetrical, Rubinstein system	52	40.4%	56.7%	0.01 MB
A35	English, symmetrical, four knights system	696	35.3%	53.0%	0.16 MB
A30	English, symmetrical, hedgehog system	1480	33.9%	57.2%	0.32 MB
A30	English, symmetrical, hedgehog, flexible formation	165	40.6%	56.7%	0.04 MB
A38	English, symmetrical, main line with b3	1	100.0%	50.0%	0.00 MB
A38	English, symmetrical, main line with d3	15	33.3%	43.3%	0.01 MB
A39	English, symmetrical, main line with d4	150	34.7%	51.3%	0.03 MB
A34	English, symmetrical, three knights system	264	39.4%	49.2%	0.06 MB
A27	English, three knights system	76	31.6%	60.5%	0.02 MB
A36	English, ultra-symmetrical variation	264	33.7%	53.2%	0.06 MB
C52	Evans gambit	13	15.4%	38.5%	0.00 MB
C51	Evans gambit declined, 5.a4	72	22.2%	44.4%	0.02 MB
C51	Evans gambit declined, Cordel variation	1	0.0%	100.0%	0.00 MB
C51	Evans gambit, 5...Be7	2	100.0%	50.0%	0.00 MB
C51	Evans gambit, Cordel variation	9	66.7%	44.4%	0.00 MB
C52	Evans gambit, Richardson attack	1	0.0%	0.0%	0.00 MB
C51	Evans gambit, Stone-Ware variation	3	33.3%	50.0%	0.00 MB
C52	Evans gambit, Tartakower attack	3	33.3%	50.0%	0.00 MB
C52	Evans gambit, Waller attack	1	0.0%	100.0%	0.00 MB
C52	Evans gambit, compromised defence, Paulsen variation	1	0.0%	100.0%	0.00 MB
C51	Evans gambit, normal variation	1	0.0%	0.0%	0.00 MB
C49	Four knights	3	33.3%	50.0%	0.00 MB
C46	Four knights game	165	31.5%	50.3%	0.04 MB
C48	Four knights, Bardeleben variation	2	50.0%	25.0%	0.00 MB
C47	Four knights, Belgrade gambit	11	36.4%	63.6%	0.00 MB
C49	Four knights, Gunsberg counter-attack	1	0.0%	100.0%	0.00 MB
C46	Four knights, Gunsberg variation	13	38.5%	34.6%	0.00 MB
C46	Four knights, Italian variation	37	27.0%	48.6%	0.01 MB
C48	Four knights, Marshall variation	3	66.7%	66.7%	0.00 MB
C49	Four knights, Nimzovich (Paulsen) variation	9	33.3%	61.1%	0.00 MB
C48	Four knights, Ranken variation	6	16.7%	41.7%	0.00 MB
C48	Four knights, Rubinstein counter-gambit	343	31.8%	55.2%	0.08 MB
C48	Four knights, Rubinstein counter-gambit, 5.Be2	2	0.0%	50.0%	0.00 MB
C48	Four knights, Rubinstein counter-gambit, Bogolyubov variation	2	0.0%	50.0%	0.00 MB
C48	Four knights, Rubinstein counter-gambit, Henneberger variation	3	100.0%	50.0%	0.00 MB
C48	Four knights, Rubinstein counter-gambit, exchange variation	31	48.4%	46.8%	0.01 MB
C47	Four knights, Scotch variation	4	50.0%	75.0%	0.00 MB
C47	Four knights, Scotch, 4...exd4	202	43.6%	49.5%	0.05 MB
C47	Four knights, Scotch, Krause variation	17	52.9%	50.0%	0.00 MB
C48	Four knights, Spanish variation	41	29.3%	61.0%	0.01 MB
C48	Four knights, Spanish, classical defence	36	33.3%	58.3%	0.01 MB
C49	Four knights, double Ruy Lopez	73	46.6%	50.7%	0.02 MB
C49	Four knights, symmetrical variation	52	32.7%	54.8%	0.01 MB
C49	Four knights, symmetrical, Capablanca variation	7	28.6%	57.1%	0.00 MB
C49	Four knights, symmetrical, Maroczy system	17	11.8%	52.9%	0.01 MB
C49	Four knights, symmetrical, Metger unpin	197	31.0%	54.6%	0.05 MB
C49	Four knights, symmetrical, Pillsbury variation	3	33.3%	16.7%	0.00 MB
C00	French defence	247	32.4%	51.4%	0.06 MB
C11	French defence	61	37.7%	48.4%	0.02 MB
C00	French defence, Steiner variation	197	32.5%	46.2%	0.04 MB
C13	French, Albin-Alekhine-Chatard attack	30	40.0%	70.0%	0.01 MB
C13	French, Albin-Alekhine-Chatard attack, Breyer variation	20	55.0%	47.5%	0.01 MB
C13	French, Albin-Alekhine-Chatard attack, Maroczy variation	2	0.0%	100.0%	0.00 MB
C13	French, Albin-Alekhine-Chatard attack, Spielmann variation	13	30.8%	69.2%	0.00 MB
C11	French, Burn variation	2625	32.2%	53.5%	0.54 MB
C00	French, Chigorin variation	287	29.6%	51.4%	0.07 MB
C10	French, Fort Knox variation	92	38.0%	62.5%	0.02 MB
C10	French, Frere (Becker) variation	11	36.4%	54.5%	0.00 MB
C11	French, Henneberger variation	14	28.6%	35.7%	0.00 MB
C00	French, King's Indian attack	808	35.0%	54.3%	0.18 MB
C00	French, Labourdonnais variation	207	35.3%	51.4%	0.05 MB
C12	French, MacCutcheon variation	36	50.0%	44.4%	0.01 MB
C12	French, MacCutcheon, Bogolyubov variation	4	25.0%	87.5%	0.00 MB
C12	French, MacCutcheon, Chigorin variation	1	100.0%	50.0%	0.00 MB
C12	French, MacCutcheon, Dr. Olland (Dutch) variation	8	25.0%	75.0%	0.00 MB
C12	French, MacCutcheon, Duras variation	1	0.0%	100.0%	0.00 MB
C12	French, MacCutcheon, Grigoriev variation	4	25.0%	12.5%	0.00 MB
C12	French, MacCutcheon, Janowski variation	37	32.4%	59.5%	0.01 MB
C12	French, MacCutcheon, Lasker variation	89	23.6%	57.9%	0.02 MB
C12	French, MacCutcheon, Lasker variation, 8...g6	345	28.1%	53.2%	0.07 MB
C12	French, MacCutcheon, Tartakower variation	1	100.0%	50.0%	0.00 MB
C12	French, MacCutcheon, advance variation	2	50.0%	75.0%	0.00 MB
C10	French, Paulsen variation	273	30.8%	57.1%	0.06 MB
C00	French, Pelikan variation	13	38.5%	50.0%	0.00 MB
C00	French, Reti (Spielmann) variation	3	33.3%	83.3%	0.00 MB
C00	French, Reversed Philidor formation	3	33.3%	16.7%	0.00 MB
C10	French, Rubinstein variation	381	34.4%	53.7%	0.09 MB
C00	French, Schlechter variation	148	35.8%	55.1%	0.03 MB
C11	French, Steinitz variation	238	31.5%	52.7%	0.05 MB
C11	French, Steinitz, Boleslavsky variation	1178	30.1%	54.6%	0.22 MB
C11	French, Steinitz, Bradford attack	1	0.0%	0.0%	0.00 MB
C11	French, Steinitz, Gledhill attack	5	60.0%	50.0%	0.00 MB
C11	French, Swiss variation	24	45.8%	31.3%	0.01 MB
C03	French, Tarrasch	591	34.9%	54.3%	0.13 MB
C05	French, Tarrasch, Botvinnik variation	41	34.1%	56.1%	0.01 MB
C07	French, Tarrasch, Eliskases variation	6	50.0%	58.3%	0.00 MB
C04	French, Tarrasch, Guimard main line	79	21.5%	50.0%	0.02 MB
C03	French, Tarrasch, Guimard variation	29	24.1%	60.3%	0.01 MB
C06	French, Tarrasch, Leningrad variation	11	9.1%	77.3%	0.00 MB
C05	French, Tarrasch, closed variation	547	26.5%	58.2%	0.11 MB
C06	French, Tarrasch, closed variation, main line	1431	33.8%	57.3%	0.27 MB
C07	French, Tarrasch, open variation	1477	37.8%	52.1%	0.32 MB
C09	French, Tarrasch, open variation, main line	1123	40.9%	56.1%	0.24 MB
C08	French, Tarrasch, open, 4.ed ed	790	40.4%	53.6%	0.18 MB
C00	French, Two knights variation	33	27.3%	31.8%	0.01 MB
C15	French, Winawer (Nimzovich) variation	237	32.9%	56.5%	0.05 MB
C15	French, Winawer, Alekhine (Maroczy) gambit	101	26.7%	57.9%	0.02 MB
C15	French, Winawer, Alekhine gambit, Alatortsev variation	1	100.0%	50.0%	0.00 MB
C15	French, Winawer, Alekhine gambit, Kan variation	38	39.5%	43.4%	0.01 MB
C15	French, Winawer, Kondratiyev variation	3	66.7%	66.7%	0.00 MB
C16	French, Winawer, Petrosian variation	59	18.6%	55.1%	0.01 MB
C16	French, Winawer, advance variation	231	22.1%	53.0%	0.05 MB
C17	French, Winawer, advance variation	17	23.5%	52.9%	0.00 MB
C18	French, Winawer, advance variation	87	25.3%	65.5%	0.02 MB
C17	French, Winawer, advance, 5.a3	219	28.3%	56.6%	0.05 MB
C19	French, Winawer, advance, 6...Ne7	103	25.2%	58.3%	0.03 MB
C17	French, Winawer, advance, Bogolyubov variation	87	28.7%	58.0%	0.02 MB
C17	French, Winawer, advance, Russian variation	14	28.6%	50.0%	0.00 MB
C19	French, Winawer, advance, Smyslov variation	87	31.0%	58.0%	0.02 MB
C19	French, Winawer, advance, poisoned pawn variation	2683	28.0%	60.2%	0.53 MB
C19	French, Winawer, advance, poisoned pawn, Euwe-Gligoric variation	7	28.6%	57.1%	0.00 MB
C19	French, Winawer, advance, poisoned pawn, Konstantinopolsky variation	639	26.3%	59.8%	0.11 MB
C19	French, Winawer, advance, positional main line	1252	27.5%	58.3%	0.27 MB
C18	French, Winawer, classical variation	142	19.0%	60.9%	0.03 MB
C15	French, Winawer, fingerslip variation	6	16.7%	58.3%	0.00 MB
C00	French, Wing gambit	5	40.0%	80.0%	0.00 MB
C02	French, advance variation	407	28.3%	53.4%	0.09 MB
C02	French, advance, Euwe variation	417	25.7%	52.4%	0.09 MB
C02	French, advance, Milner-Barry gambit	11	18.2%	81.8%	0.00 MB
C02	French, advance, Nimzovich system	87	16.1%	47.1%	0.02 MB
C02	French, advance, Paulsen attack	473	26.4%	55.5%	0.10 MB
C02	French, advance, Steinitz variation	102	29.4%	49.0%	0.02 MB
C02	French, advance, Wade variation	96	27.1%	59.4%	0.02 MB
C13	French, classical	8	12.5%	56.3%	0.00 MB
C14	French, classical, Alapin variation	3	66.7%	33.3%	0.00 MB
C13	French, classical, Anderssen variation	2	0.0%	50.0%	0.00 MB
C13	French, classical, Anderssen-Richter variation	1	0.0%	0.0%	0.00 MB
C13	French, classical, Frankfurt variation	5	0.0%	60.0%	0.00 MB
C14	French, classical, Pollock variation	1	0.0%	0.0%	0.00 MB
C14	French, classical, Rubinstein variation	6	0.0%	66.7%	0.00 MB
C14	French, classical, Stahlberg variation	2	50.0%	75.0%	0.00 MB
C14	French, classical, Steinitz variation	294	28.9%	59.4%	0.06 MB
C13	French, classical, Tartakower variation	6	16.7%	75.0%	0.00 MB
C13	French, classical, Vistaneckis (Nimzovich) variation	2	0.0%	50.0%	0.00 MB
C01	French, exchange variation	511	35.4%	54.5%	0.12 MB
C01