Structure de pions

	♔ Blancs	♚ Noirs
Pions doublés	—	—
Pions isolés	—	—
Arriérés	—	—
Chaînes	—	● b7→a6
Passés	—	—
Majorité	—	—

Cases

	♔ Blancs	♚ Noirs
Cases fortes	—	● b4 (2v0), ● d4 (2v1), ● c5 (2v0), ● g5 (2v1)
Cases faibles	—	—
Centre	—	● d4 (2v1)

Colonnes et diagonales

	♔ Blancs	♚ Noirs
Semi-ouvertes	● e	—

Pièces

	♔ Blancs	♚ Noirs
Bc1	● Bc1 Non développé (mob. 0)
Ba4	● Ba4 Ok (mob. 3)
Bc8		● Bc8 Non développé (mob. 0)
Bf8		● Bf8 Non développé (mob. 5)
Paire de fous	● Oui	● Oui
Non développées	3 (● b1, ● c1, ● a1)	4 (● c8, ● f8, ● a8, ● h8)

Sécurité du roi

	♔ Blancs	♚ Noirs
Statut	● Roqué	● Au centre
Droits de roque	—	O-O / O-O-O

Thèmes

	♔ Blancs	♚ Noirs
Phase	Ouverture
Centre	mobile
Ruptures	● d2-d4	—

C80 — C80-C89 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 & C84-C89 C84 5. O-O Be7 Ruy Lopez, closed defence

○ Trait aux Blancs

Ouverture — Centre mobile

♔ Point de vue Blancs

8 7 6 5 4 3 2 1

abcdefgh

Plans. d3 (Libérer Bc1) ; h3 (Empêcher ...Bg4) ; c3 (Préparer d4) ; d4 (Occuper le centre) ; c4 (Frapper le centre adverse).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8

hgfedcba

Plans. ...d6 (Libérer Bc8) ; ...Be7 (Développer Bf8) ; ...d5 (Occuper le centre) ; ...f6 (Poussée) ; ...f5 (Poussée).

Avantages

Faiblesses

Diagonale active

Plans

├── C80 - 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 - Ruy Lopez: Open [+0.36] · 279 parties

│ ├── C80c - 6.Qe2 - Morphy Defense, Tartakower Variation (1942) [-0.35] · 13 parties

│ ├── C80d - 6.Re1 - Spanish: Open (1900) [+0.02] · 38 parties

│ │ ├── C80d - 6…* - Spanish: Open · 17 parties

│ │ └── C80e - 6…Nc5 7.Bxc6 - Spanish: Open (1903) [+0.06] · 21 parties

│ └── C80f - 6.d4 - Ruy Lopez: Open (1967) [+0.22] · 228 parties

│ ├── C80f - 6…* - Open · 1 partie

│ ├── C80g - 6…exd4 - Open, Riga Variation (1908) [+1.32] · 10 parties

│ ├── C80h - 6…Be7 - Spanish: Open (1905) [+0.41] · 29 parties

│ └── C80i - 6…b5 - Spanish: Open [+0.34] · 188 parties

│ ├── C80i - 7.Nxe5 - Ruy Lopez: Open, Friess Attack (1915) [-0.32] · 1 partie

│ ├── C80i - 7.d5 - Ruy Lopez: Open, Richter Variation (1937) [-1.07] · 11 parties

│ └── C80j - 7.Bb3 - Ruy Lopez: Open (1907) [+0.24] · 176 parties

│ ├── C80j - 7…* - Open · 11 parties

│ └── C80k - 7…d5 - Spanish: Open (1963) [+0.39] · 165 parties

│ ├── C80k - 8.* - Spanish: Open · 3 parties

│ ├── C80k - 8.a4 - Spanish: Open (1900) [-0.31] · 35 parties

│ │ ├── C80k - 8…* - Spanish: Open · 18 parties

│ │ └── C80k - 8…Nxd4 - Ruy Lopez: Open, Schlechter Defense (1910) [-0.29] · 17 parties

│ │ ├── C80k - 9.* - Open, Schlechter Defense · 11 parties

│ │ └── C80k - 9.Nxd4 exd4 10.Nc3 - Open, Berger Variation (1910) [-1.14] · 6 parties

│ ├── C80k - 8.c4 - Ruy Lopez: Open, Harksen Gambit (1922) [-1.46] · 2 parties

│ ├── C80l - 8.Nxe5 - Spanish: Open (1905) [+0.23] · 51 parties

│ └── C80m - 8.dxe5 - Ruy Lopez: Open [+0.35] · 74 parties

│ ├── C80m - 8…Ne7 - Open, Zukertort Variation (1901) [+1.05] · 5 parties

│ └── C80n - 8…Be6 - Open, Main Line (1912) [+0.21] · 69 parties

│ ├── C80n - 9.* - Open, Main Line · 4 parties

│ ├── C80n - 9.a4 - Spanish: Open (1903) [-0.15] · 15 parties

│ ├── C80o - 9.Be3 - Spanish: Open (1923) [+0.17] · 12 parties

│ └── C80p - 9.Nbd2 - Open, Bernstein Variation (2005) [+0.21] · 38 parties

│ ├── C80p - 9…* - Open, Bernstein Variation · 4 parties

│ ├── C80q - 9…Bc5 - Open, Bernstein (1994) [+0.57] · 1 partie

│ └── C80r - 9…Nc5 - Open, Bernstein (1928) [+0.23] · 33 parties

│ ├── C80r - 10.* - Open, Bernstein · 3 parties

│ └── C80s - 10.c3 d4 - Open, Bernstein (2025) [+0.45] · 30 parties

│ ├── C80s - 11.* - Open, Bernstein · 2 parties

│ ├── C80t - 11.Ng5 - Ruy Lopez: Open, Karpov Gambit (1978) [+0.00] · 7 parties

│ └── C80u - 11.Bxe6 - Open, Bernstein (1981) [+0.42] · 21 parties

├── C81 - 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.Qe2 - Ruy Lopez: Open, Howell Attack (1948) [+0.19] · 205 parties

│ ├── C81a - 9…* - Open, Howell Attack (1940) [+0.16] · 61 parties

│ ├── C81b - 9…Bc5 - Open, Keres Attack (1947) [+0.55] · 41 parties

│ └── C81c - 9…Be7 - Open, Keres Attack (1903) [+0.15] · 103 parties

│ ├── C81c - 10.* - Open, Keres Attack · 8 parties

│ ├── C81d - 10.c4 - Ruy Lopez: Open, Howell Attack (1946) [-0.85] · 4 parties

│ └── C81e - 10.Rd1 - Open, Keres (1949) [+0.07] · 91 parties

│ ├── C81e - 10…* - Open, Keres · 50 parties

│ └── C81f - 10…O-O - Open, Keres (1965) [+0.04] · 41 parties

│ ├── C81f - 11.* - Open, Keres · 7 parties

│ ├── C81g - 11.c3 - Open, Keres (1923) [-0.02] · 4 parties

│ └── C81h - 11.c4 - Open, Keres (1949) [+0.08] · 30 parties

│ ├── C81h - 11…* - Open, Keres · 5 parties

│ ├── C81i - 11…bxc4 12.Bxc4 Qd7 - Ruy Lopez: Open, Howell Attack, Ekstrom Variation (1936) [+0.41] · 11 parties

│ └── C81j - 11…bxc4 12.Bxc4 Bc5 - Spanish: Open, Keres [+0.09] · 14 parties

├── C82 - 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3 - Ruy Lopez: Open [+0.33] · 317 parties

│ ├── C82a - 9…* - Open (1912) [+0.41] · 4 parties

│ ├── C82b - 9…Nc5 - Open, Berlin Variation (1947) [+0.71] · 74 parties

│ │ ├── C82b - 10.* - Open, Berlin Variation · 10 parties

│ │ └── C82b - 10.Bc2 - Open, Berlin (1913) [+0.68] · 64 parties

│ │ ├── C82b - 10…* - Open, Berlin · 1 partie

│ │ └── C82c - 10…Bg4 - Open, Berlin (1953) [+0.67] · 63 parties

│ │ ├── C82c - 11.* - Open, Berlin · 7 parties

│ │ ├── C82d - 11.Re1 - Open, Berlin (1910) [+0.66] · 19 parties

│ │ └── C82e - 11.Nbd2 - Open, Berlin (1996) [+0.50] · 37 parties

│ │ ├── C82e - 11…* - Open, Berlin · 5 parties

│ │ └── C82e - 11…Be7 - Open, Berlin (1912) [+0.54] · 32 parties

│ │ ├── C82e - 12.* - Open, Berlin · 8 parties

│ │ └── C82f - 12.Re1 - Open, Berlin (1923) [+0.62] · 24 parties

│ │ ├── C82f - 12…* - Open, Berlin · 4 parties

│ │ ├── C82g - 12…Qd7 - Open, Berlin (1941) [+0.61] · 12 parties

│ │ └── C82h - 12…O-O - Open, Berlin (1911) [+0.82] · 8 parties

│ └── C82i - 9…Bc5 - Open, Italian Variation (1900) [+0.46] · 239 parties

│ ├── C82i - 10.* - Open, Italian Variation · 31 parties

│ ├── C82j - 10.Qd3 - Open, Motzko Attack (1911) [+0.19] · 51 parties

│ │ ├── C82j - 10…* - Open, Motzko Attack · 43 parties

│ │ └── C82j - 10…Ne7 - Nenarokov Variation (1932) [+0.48] · 8 parties

│ └── C82k - 10.Nbd2 - Open, St. Petersburg Variation (1900) [+0.28] · 157 parties

│ ├── C82k - 10…* - Open, St. Petersburg Variation · 9 parties

│ └── C82k - 10…O-O - Open, St. Petersburg Variation (1905) [+0.33] · 148 parties

│ ├── C82k - 11.* - Open, St. Petersburg Variation · 24 parties

│ └── C82l - 11.Bc2 - Open, St. Petersburg (1900) [+0.47] · 124 parties

│ ├── C82l - 11…* - Open, St. Petersburg · 12 parties

│ ├── C82m - 11…f5 - Open, St. Petersburg (1900) [+0.62] · 50 parties

│ ├── C82n - 11…Bf5 - Open, Baguio Variation [+0.53] · 29 parties

│ │ └── C82n - 12.Nb3 - Open, Baguio (1927) [+0.57] · 29 parties

│ └── C82o - 11…Nxf2 - Ruy Lopez: Open, Dilworth Variation (1947) [+0.40] · 33 parties

│ ├── C82o - 12.* - Open, Dilworth Variation · 11 parties

│ └── C82o - 12.Rxf2 f6 13.exf6 - Open, Dilworth (1948) [+0.56] · 22 parties

│ ├── C82o - 13…* - Open, Dilworth · 7 parties

│ └── C82p - 13…Bxf2+ 14.Kxf2 - Open, Dilworth (1968) [+0.49] · 15 parties

│ ├── C82p - 14…* - Open, Dilworth · 1 partie

│ ├── C82q - 14…Qxf6 15.Nf1 - Open, Dilworth (1948) [+0.17] · 7 parties

│ └── C82r - 14…Qxf6 15.Kg1 - Open, Dilworth (1948) [-0.32] · 7 parties

│ └── C82r - 15…* - Open, Dilworth · 7 parties

├── C83 - 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3 Be7 - Ruy Lopez: Open, Classical Defense [+0.30] · 438 parties

│ ├── C83a - 10.* - Open, Classical Defense (1909) [+0.26] · 95 parties

│ ├── C83b - 10.Re1 - Open, Classical (1900) [+0.13] · 35 parties

│ │ ├── C83b - 10…* - Open, Classical · 32 parties

│ │ └── C83i - 10…O-O 11.Nd4 Nxe5 - Ruy Lopez: Open, Breslau Variation (1922) [+0.25] · 3 parties

│ ├── C83c - 10.Be3 - Open, Classical (1913) [+0.20] · 121 parties

│ └── C83d - 10.Nbd2 - Open, Classical (1910) [+0.27] · 187 parties

│ ├── C83d - 10…* - Open, Classical · 5 parties

│ ├── C83e - 10…Nc5 - Open, Classical (1911) [+0.30] · 53 parties

│ └── C83f - 10…O-O - Open, Classical (1919) [+0.48] · 129 parties

│ ├── C83f - 11.* - Open, Classical · 16 parties

│ ├── C83g - 11.Qe2 - Ruy Lopez: Open, Malkin Variation (1922) [+0.05] · 38 parties

│ └── C83h - 11.Bc2 - Open, Classical (1919) [+0.39] · 75 parties

│ ├── C83h - 11…* - Open, Classical · 15 parties

│ ├── C83j - 11…f5 12.Nb3 - Open, Classical (1902) [+0.40] · 32 parties

│ └── C83k - 11…f5 12.exf6 - Open, Classical (1921) [+0.34] · 28 parties

├── C84 - 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 - Ruy Lopez: Closed [+0.37] · 1066 parties

│ ├── C84a - 6.* - Closed (1906) [+0.32] · 14 parties

│ ├── C84b - 6.Nc3 - Closed, Morphy Attack (1900) [-0.04] · 254 parties

│ │ ├── C84b - 6…* - Closed, Morphy Attack · 48 parties

│ │ └── C84c - 6…b5 - Spanish: Closed [-0.03] · 206 parties

│ │ └── C84c - 7.Bb3 - Spanish: Closed (1900) [-0.01] · 206 parties

│ │ ├── C84c - 7…* - Spanish: Closed · 28 parties

│ │ └── C84c - 7…d6 - Spanish: Closed (1900) [-0.03] · 178 parties

│ │ ├── C84c - 8.* - Spanish: Closed · 108 parties

│ │ └── C84d - 8.Nd5 - Spanish: Closed (1900) [-0.14] · 70 parties

│ ├── C84e - 6.d3 - Closed, Martinez Variation (1900) [+0.33] · 429 parties

│ │ ├── C84e - 6…* - Closed, Martinez Variation · 122 parties

│ │ └── C84f - 6…b5 - Spanish: Closed [+0.32] · 307 parties

│ │ └── C84f - 7.Bb3 - Spanish: Closed (1908) [+0.20] · 307 parties

│ └── C84g - 6.d4 - Closed, Center Attack (1900) [-0.07] · 369 parties

│ ├── C84g - 6…* - Closed, Center Attack · 28 parties

│ └── C84g - 6…exd4 - Closed, Centre Attack (1904) [-0.04] · 341 parties

│ ├── C84g - 7.* - Closed, Centre Attack · 9 parties

│ ├── C84h - 7.e5 - Closed, Centre Attack (1939) [-0.16] · 242 parties

│ │ ├── C84h - 7…* - Closed, Centre Attack · 4 parties

│ │ └── C84h - 7…Ne4 - Closed, Centre Attack (1902) [-0.08] · 238 parties

│ │ ├── C84h - 8.* - Closed, Centre Attack · 45 parties

│ │ ├── C84h - 8.b4 - Closed, Centre Attack (1963) [-0.89] · 1 partie

│ │ ├── C84h - 8.c3 - Ruy Lopez: Closed, Basque Gambit [-0.54] · 3 parties

│ │ │ └── C84h - 8…dxc3 - Closed, Center Attack, Basque Gambit (1937) [-0.49] · 3 parties

│ │ └── C84i - 8.Nxd4 - Closed, Centre Attack (1902) [-0.09] · 189 parties

│ │ ├── C84i - 8…* - Closed, Centre Attack · 29 parties

│ │ ├── C84j - 8…Nxd4 - Closed, Centre Attack (1902) [-0.04] · 88 parties

│ │ └── C84k - 8…O-O - Closed, Centre Attack (1902) [-0.10] · 72 parties

│ └── C84l - 7.Re1 - Closed, Centre Attack (1952) [-0.38] · 90 parties

│ ├── C84l - 7…* - Closed, Centre Attack · 3 parties

│ ├── C84m - 7…b5 - Closed, Centre Attack (1951) [-0.34] · 47 parties

│ │ ├── C84m - 8.* - Closed, Centre Attack · 14 parties

│ │ └── C84n - 8.e5 - Closed, Centre Attack (1945) [-0.46] · 33 parties

│ │ ├── C84n - 8…* - Closed, Centre Attack · 3 parties

│ │ └── C84n - 8…Nxe5 - Closed, Centre Attack (1927) [-0.42] · 30 parties

│ │ ├── C84n - 9.* - Closed, Centre Attack · 16 parties

│ │ └── C84n - 9.Rxe5 - Closed, Centre Attack (1938) [-0.48] · 14 parties

│ └── C84o - 7…O-O - Closed, Centre Attack (1901) [+0.11] · 40 parties

│ ├── C84o - 8.* - Closed, Centre Attack · 12 parties

│ └── C84p - 8.e5 Ne8 - Closed, Centre Attack (1907) [+0.21] · 28 parties

│ ├── C84p - 9.* - Closed, Centre Attack · 15 parties

│ ├── C84p - 9.c3 - Closed, Centre Attack (1952) [+0.03] · 11 parties

│ └── C84q - 9.Bf4 - Closed, Centre Attack (1958) [-0.10] · 2 parties

├── C85 - 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Bxc6 - Ruy Lopez: Closed, Delayed Exchange [+0.10] · 425 parties

│ ├── C85a - 6…* - Closed, Delayed Exchange (1951) [+0.01] · 6 parties

│ └── C85b - 6…dxc6 - Closed, Exchange (1946) [+0.10] · 419 parties

│ ├── C85b - 7.* - Closed, Exchange · 23 parties

│ ├── C85c - 7.Qe2 - Closed, Exchange (1948) [+0.02] · 3 parties

│ ├── C85d - 7.Nc3 - Closed, Exchange (1956) [-0.29] · 52 parties

│ │ ├── C85d - 7…* - Closed, Exchange · 19 parties

│ │ └── C85e - 7…Bg4 - Closed, Exchange (1931) [-0.24] · 33 parties

│ ├── C85f - 7.Qe1 - Closed, Exchange (1952) [-0.27] · 107 parties

│ │ ├── C85f - 7…* - Closed, Exchange · 25 parties

│ │ ├── C85g - 7…c5 - Closed, Exchange (1949) [+0.00] · 27 parties

│ │ └── C85h - 7…Nd7 - Closed, Exchange (1935) [-0.08] · 55 parties

│ │ ├── C85h - 8.* - Closed, Exchange · 35 parties

│ │ └── C85i - 8.b3 - Closed, Exchange (1955) [-0.25] · 20 parties

│ └── C85j - 7.d3 - Closed, Exchange (1960) [-0.02] · 234 parties

│ ├── C85j - 7…* - Closed, Exchange · 10 parties

│ ├── C85k - 7…Bg4 - Closed, Exchange (1902) [+0.43] · 28 parties

│ └── C85l - 7…Nd7 - Closed, Exchange (1957) [-0.04] · 196 parties

│ ├── C85l - 8.* - Closed, Exchange · 28 parties

│ └── C85m - 8.Nbd2 - Closed, Exchange (1945) [-0.09] · 168 parties

│ ├── C85m - 8…* - Closed, Exchange · 39 parties

│ └── C85n - 8…O-O 9.Nc4 - Closed, Exchange (1947) [+0.02] · 129 parties

│ ├── C85n - 9…* - Closed, Exchange · 41 parties

│ └── C85o - 9…f6 - Closed, Exchange (1947) [+0.06] · 88 parties

│ ├── C85o - 10.* - Closed, Exchange · 32 parties

│ └── C85p - 10.Nh4 - Closed, Exchange (1963) [+0.07] · 56 parties

│ ├── C85p - 10…* - Closed, Exchange · 9 parties

│ └── C85q - 10…Nc5 - Closed, Exchange (1956) [+0.14] · 47 parties

│ ├── C85q - 11.* - Closed, Exchange · 10 parties

│ └── C85r - 11.Nf5 - Closed, Exchange (1959) [+0.12] · 37 parties

├── C86 - 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Qe2 - Ruy Lopez: Closed, Worrall Attack [+0.03] · 526 parties

│ ├── C86a - 6…* - Closed, Worrall Attack (1937) [-0.03] · 4 parties

│ ├── C86a - 6…d6 - Spanish: Worrall Attack (1903) [+0.31] · 47 parties

│ └── C86b - 6…b5 - Spanish: Worrall Attack [-0.05] · 475 parties

│ └── C86b - 7.Bb3 - Spanish: Worrall Attack (1952) [-0.06] · 475 parties

│ ├── C86b - 7…* - Spanish: Worrall Attack · 2 parties

│ ├── C86c - 7…d6 - Ruy Lopez: Closed, Worrall Attack, Delayed Castling Line (1904) [+0.20] · 156 parties

│ │ ├── C86c - 8.* - Closed, Worrall Attack, Delayed Castling Line · 90 parties

│ │ └── C86d - 8.c3 - Spanish: Worrall Attack (1908) [+0.18] · 66 parties

│ └── C86e - 7…O-O - Ruy Lopez: Closed, Worrall Attack, Castling Line (1904) [-0.09] · 317 parties

│ ├── C86e - 8.* - Closed, Worrall Attack, Castling Line · 12 parties

│ ├── C86e - 8.a4 - Spanish: Worrall Attack (1931) [+0.00] · 32 parties

│ └── C86f - 8.c3 - Spanish: Worrall Attack (1923) [-0.19] · 273 parties

│ ├── C86f - 8…* - Spanish: Worrall Attack · 2 parties

│ ├── C86g - 8…d6 - Spanish: Worrall Attack (1928) [+0.14] · 177 parties

│ │ ├── C86g - 9.* - Spanish: Worrall Attack · 66 parties

│ │ ├── C86h - 9.d4 - Spanish: Worrall Attack (1910) [+0.05] · 82 parties

│ │ └── C86i - 9.Rd1 - Spanish: Worrall Attack (1941) [+0.14] · 29 parties

│ └── C86j - 8…d5 - Spanish: Worrall Attack (1947) [-0.17] · 94 parties

│ ├── C86j - 9.* - Spanish: Worrall Attack · 2 parties

│ ├── C86j - 9.exd5 - Spanish: Worrall Attack (1910) [-0.29] · 22 parties

│ └── C86k - 9.d3 - Spanish: Worrall Attack (1932) [-0.19] · 70 parties

│ ├── C86k - 9…* - Spanish: Worrall Attack · 61 parties

│ └── C86l - 9…Bb7 - Spanish: Worrall Attack (1947) [-0.06] · 9 parties

├── C87 - 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 - Spanish [+0.33] · 494 parties

│ ├── C87a - 6…* - Closed (1926) [+0.36] · 5 parties

│ └── C87b - 6…d6 - Ruy Lopez: Closed, Averbakh Variation (1905) [+0.48] · 489 parties

│ ├── C87b - 7.* - Ruy Lopez: Closed, Averbakh Variation · 17 parties

│ ├── C87c - 7.Bxc6+ - Closed, Averbakh [+0.22] · 59 parties

│ │ └── C87c - 7…bxc6 8.d4 - Closed, Averbakh (1902) [+0.26] · 59 parties

│ │ ├── C87c - 8…* - Closed, Averbakh · 30 parties

│ │ └── C87d - 8…exd4 - Closed, Averbakh (1962) [+0.31] · 29 parties

│ │ ├── C87d - 9.* - Closed, Averbakh · 3 parties

│ │ └── C87d - 9.Nxd4 - Closed, Averbakh (1903) [+0.35] · 26 parties

│ └── C87e - 7.c3 - Closed, Averbakh (1905) [+0.46] · 413 parties

│ ├── C87e - 7…* - Closed, Averbakh · 19 parties

│ ├── C87f - 7…Bg4 - Closed, Averbakh (1903) [+0.52] · 82 parties

│ │ ├── C87f - 8.* - Closed, Averbakh · 10 parties

│ │ ├── C87g - 8.h3 - Closed, Averbakh (1903) [+0.49] · 26 parties

│ │ └── C87h - 8.d3 - Closed, Averbakh (1904) [+0.57] · 46 parties

│ └── C87i - 7…O-O - Closed, Averbakh (1905) [+0.47] · 312 parties

│ ├── C87i - 8.* - Closed, Averbakh · 8 parties

│ ├── C87j - 8.d4 - Closed, Averbakh (1903) [+0.47] · 244 parties

│ │ ├── C87j - 8…* - Closed, Averbakh · 37 parties

│ │ └── C87k - 8…Bd7 - Closed, Averbakh (1905) [+0.54] · 207 parties

│ │ ├── C87k - 9.* - Closed, Averbakh · 35 parties

│ │ └── C87l - 9.Nbd2 - Closed, Averbakh (1905) [+0.45] · 172 parties

│ │ ├── C87l - 9…* - Closed, Averbakh · 100 parties

│ │ └── C87m - 9…Re8 - Closed, Averbakh (1905) [+0.54] · 72 parties

│ └── C87n - 8.h3 - Closed, Averbakh (1903) [+0.40] · 60 parties

│ ├── C87n - 8…* - Closed, Averbakh · 32 parties

│ └── C87o - 8…Bd7 - Closed, Averbakh (1903) [+0.63] · 28 parties

├── C88 - 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 - Spanish [+0.31] · 1120 parties

│ └── C88a - 7.Bb3 - Ruy Lopez: Closed [+0.39] · 1120 parties

│ ├── C88b - 7…Bb7 - Closed, Trajkovic Counterattack (1948) [+0.57] · 14 parties

│ ├── C88c - 7…d6 - Closed 7…d6 (1902) [+0.35] · 372 parties

│ │ ├── C88c - 8.* - Closed 7…d6 · 61 parties

│ │ ├── C88c - 8.d4 - Ruy Lopez: Closed, Rosen Attack (1903) [-0.48] · 3 parties

│ │ │ └── C88c - 8…* - Ruy Lopez: Closed, Rosen Attack · 3 parties

│ │ └── C88d - 8.c3 - Closed 7…d6 8.c3 (1954) [+0.35] · 308 parties

│ │ ├── C88d - 8…* - Closed 7…d6 8.c3 · 6 parties

│ │ ├── C88d - 8…Bg4 - Closed 7…d6 8.c3 Bg4 (1901) [+0.61] · 64 parties

│ │ └── C88e - 8…Na5 - Closed 7…d6 8.c3 Na5 (1903) [+0.68] · 238 parties

│ │ ├── C88e - 9.* - Closed 7…d6 8.c3 Na5 · 195 parties

│ │ └── C88e - 9.Bc2 c5 10.d4 Qc7 11.a4 - Ruy Lopez: Closed, Balla Variation (1912) [+0.61] · 43 parties

│ └── C88f - 7…O-O - Ruy Lopez: Closed (1918) [+0.34] · 734 parties

│ ├── C88f - 8.* - Ruy Lopez: Closed · 52 parties

│ ├── C88g - 8.d3 - Closed (1938) [+0.23] · 23 parties

│ │ ├── C88g - 8…* - Closed · 6 parties

│ │ └── C88g - 8…d6 - Closed (1960) [+0.14] · 17 parties

│ ├── C88h - 8.h3 - Closed (1943) [+0.19] · 202 parties

│ │ ├── C88h - 8…* - Closed · 84 parties

│ │ └── C88i - 8…Bb7 9.d3 d6 - Closed (1938) [+0.28] · 118 parties

│ ├── C88j - 8.a4 - Closed, Anti-Marshall (1930) [+0.27] · 448 parties

│ │ ├── C88j - 8…* - Ruy Lopez: Closed, Anti-Marshall · 41 parties

│ │ ├── C88k - 8…b4 - Closed, Anti-Marshall 8.a4 b4 (1925) [+0.22] · 212 parties

│ │ └── C88l - 8…Bb7 - Closed, Anti-Marshall 8.a4 Bb7 (1932) [+0.34] · 195 parties

│ │ ├── C88l - 9.* - Closed, Anti-Marshall 8.a4 Bb7 · 23 parties

│ │ └── C88m - 9.d3 - Closed, Anti-Marshall 8.a4 Bb7 9.d3 (1946) [+0.30] · 172 parties

│ │ ├── C88m - 9…* - Closed, Anti-Marshall 8.a4 Bb7 9.d3 · 26 parties

│ │ └── C88n - 9…d6 - Closed, Anti-Marshall 8.a4 Bb7 9.d3 d6 (1958) [+0.23] · 146 parties

│ │ ├── C88n - 10.* - Closed, Anti-Marshall 8.a4 Bb7 9.d3 d6 · 89 parties

│ │ ├── C88o - 10.Nc3 - Closed, Anti-Marshall 8.a4 Bb7 9.d3 d6 10.Nc3 (1925) [+0.16] · 34 parties

│ │ └── C88p - 10.c3 - Closed, Anti-Marshall 8.a4 Bb7 9.d3 d6 10.c3 (1954) [+0.13] · 23 parties

│ └── C88q - 8.c3 - Closed (1924) [+0.20] · 9 parties

└── C89 - 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5 - Ruy Lopez: Marshall Attack [+0.28] · 371 parties

├── C89a - 9.* - Marshall Attack (1945) [+0.59] · 33 parties

└── C89b - 9.exd5 - Spanish: Marshall [+0.65] · 338 parties

├── C89b - 9…e4 - Ruy Lopez: Marshall Attack, Steiner Variation (1929) [+1.01] · 28 parties

└── C89c - 9…Nxd5 - Spanish: Marshall (1918) [+0.35] · 310 parties

├── C89c - 10.* - Spanish: Marshall · 18 parties

└── C89d - 10.Nxe5 - Spanish: Marshall [+0.30] · 292 parties

└── C89d - 10…Nxe5 - Spanish: Marshall (2024) [+0.41] · 292 parties

└── C89d - 11.Rxe5 - Spanish: Marshall (1930) [+0.39] · 292 parties

├── C89d - 11…* - Spanish: Marshall · 10 parties

├── C89e - 11…Nf6 - Ruy Lopez: Marshall Attack, Original Marshall Attack (1918) [+0.70] · 25 parties

└── C89f - 11…c6 - Ruy Lopez: Marshall Attack, Modern Variation (1950) [+0.59] · 257 parties

├── C89f - 12.* - Marshall Attack, Modern Variation · 12 parties

├── C89g - 12.Bxd5 - Spanish: Marshall (1939) [-0.25] · 23 parties

│ ├── C89g - 12…* - Spanish: Marshall · 6 parties

│ └── C89h - 12…cxd5 13.d4 Bd6 14.Re3 - Ruy Lopez: Marshall Attack, Re3 Variation (1946) [-0.27] · 17 parties

├── C89i - 12.d3 - Spanish: Marshall [+0.27] · 87 parties

│ └── C89i - 12…Bd6 13.Re1 - Spanish: Marshall (1966) [+0.27] · 87 parties

│ ├── C89i - 13…* - Spanish: Marshall · 65 parties

│ └── C89j - 13…Qh4 - Spanish: Marshall (1964) [+0.33] · 22 parties

└── C89k - 12.d4 - Marshall Attack, Main Line [+0.61] · 135 parties

└── C89k - 12…Bd6 - Marshall, Main Line (12.d4 Bd6) [+0.64] · 135 parties

├── C89l - 13.Re2 - Marshall, Main Line (1946) [-0.06] · 8 parties

└── C89m - 13.Re1 - Marshall, Main Line (1959) [+0.51] · 127 parties

├── C89m - 13…* - Marshall, Main Line · 1 partie

└── C89m - 13…Qh4 - Marshall, Main Line [+0.64] · 126 parties

└── C89m - 14.g3 - Marshall, Main Line [+0.67] · 126 parties

└── C89n - 14…Qh3 - Ruy Lopez: Marshall Attack, Modern Main Line (1943) [+0.69] · 126 parties

├── C89n - 15.* - Marshall Attack, Modern Main Line · 27 parties

├── C89o - 15.Re4 - Marshall, Main Line (1947) [+0.76] · 23 parties

└── C89p - 15.Be3 - Marshall, Main Line (1964) [+0.00] · 76 parties

├── C89p - 15…* - Marshall, Main Line · 2 parties

└── C89p - 15…Bg4 - Marshall, Main Line [+0.09] · 74 parties

└── C89p - 16.Qd3 - Marshall, Main Line (1949) [+0.11] · 74 parties

├── C89p - 16…* - Marshall, Main Line · 22 parties

└── C89q - 16…Rae8 - Marshall, Main Line (1960) [+0.06] · 52 parties

├── C89q - 17.* - Marshall, Main Line · 2 parties

└── C89q - 17.Nd2 - Marshall, Main Line (1956) [+0.01] · 50 parties

├── C89q - 17…* - Marshall, Main Line · 6 parties

├── C89r - 17…f5 - Pawn Push Variation (1960) [+0.22] · 5 parties

└── C89s - 17…Re6 - Classical Variation (1964) [+0.31] · 39 parties

├── C89s - 18.* - Marshall, Main Line, Classical Variation · 3 parties

├── C89t - 18.c4 - Marshall, Main Line, Classical (1963) [-0.70] · 1 partie

├── C89u - 18.Bxd5 - Marshall, Main Line, Classical (1964) [-1.03] · 4 parties

├── C89v - 18.Qf1 - Marshall, Main Line, Classical (1952) [+0.24] · 11 parties

└── C89w - 18.a4 - Marshall, Main Line, Classical (1938) [+0.00] · 20 parties

├── C89w - 18…* - Marshall, Main Line, Classical · 8 parties

├── C89x - 18…Qh5 - Ruy Lopez: Marshall Attack, Main Line, Spassky Variation (1965) [+0.00] · 10 parties

└── C89y - 18…f5 - Marshall, Main Line, Classical (1963) [+0.77] · 2 parties

Les parties, variante par variante

11120 partiesC88 - 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 - Spanish

21066 partiesC84 - 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 - Ruy Lopez: Closed

3526 partiesC86 - 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Qe2 - Ruy Lopez: Closed, Worrall Attack

4494 partiesC87 - 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 - Spanish

5438 partiesC83 - 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3 Be7 - Ruy Lopez: Open, Classical Defense

6425 partiesC85 - 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Bxc6 - Ruy Lopez: Closed, Delayed Exchange

7371 partiesC89 - 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5 - Ruy Lopez: Marshall Attack

8317 partiesC82 - 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3 - Ruy Lopez: Open

9279 partiesC80 - 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 - Ruy Lopez: Open

10205 partiesC81 - 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.Qe2 - Ruy Lopez: Open, Howell Attack (1948)

C80 - 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 - Ruy Lopez: Open (279)

Base Masters : Blancs 28.6%, Nulles 55.5%, Noirs 15.9%. Coups candidats 5...d4 (96.5% — Blancs: 28.9% | Nulles: 55.6% | Noirs: 15.5%)5...Re1 (3.2% — Blancs: 21.4% | Nulles: 50.4% | Noirs: 28.2%)5...Qe2 (0.1% — Blancs: 18.2% | Nulles: 54.5% | Noirs: 27.3%)5...Bxc6 (0.1%)5...Qe15...d3 auto Analyse coup par coup — 8 demi-coups commentés 1.e4 Avancée centrale — contrôle d5, f5. Prépare d4, f4, Bc4, Bd3. 1...e5 Avancée centrale — contrôle d4, f4. Prépare d5, f5, Bc5. 2.Nf3 Contrôle c4, d4, d5, e5. 2...Nc6 Contrôle d4, f4, c5. 3.Bb5 Contrôle c4, d4, d5, e5. 3...a6 Coup prophylactique — empêche Nb5, Bb5. Prépare b5. 4.Ba4 Contrôle d4, d5, e5, f5. 4...Nf6 Contrôle d4, e4, f4, c5.…
C81 - 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.Qe2 - Ruy Lopez: Open, Howell Attack (1948) (205)

Base Masters : Blancs 32.7%, Nulles 52.3%, Noirs 15.0%. Coups candidats 5...Be7 (70.0% — Blancs: 30.8% | Nulles: 55.5% | Noirs: 13.7%)5...Nc5 (15.4% — Blancs: 29.1% | Nulles: 48.5% | Noirs: 22.3%)5...Bc5 (13.2% — Blancs: 42.0% | Nulles: 43.2% | Noirs: 14.8%)5...Na5 (0.7%)5...Qd7 (0.3%)5...g6 (0.1%) auto Analyse coup par coup — 8 demi-coups commentés 1.e4 Avancée centrale — contrôle d5, f5. Prépare d4, f4, Bc4, Bd3. 1...e5 Avancée centrale — contrôle d4, f4. Prépare d5, f5, Bc5. 2.Nf3 Contrôle c4, d4, d5, e5. 2...Nc6 Contrôle d4, f4, c5. 3.Bb5 Contrôle c4, d4, d5, e5. 3...a6 Coup prophylactique — empêche Nb5, Bb5. Prépare b5. 4.Ba4 Contrôle d4, d5, e5, f5. 4...Nf6 Contrôle d4, e4, f4, c5.…
C82 - 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3 - Ruy Lopez: Open (317)

Base Masters : Blancs 26.8%, Nulles 55.4%, Noirs 17.8%. Coups candidats 5...Bc5 (53.4% — Blancs: 26.7% | Nulles: 53.8% | Noirs: 19.5%)5...Be7 (41.3% — Blancs: 25.3% | Nulles: 60.3% | Noirs: 14.4%)5...Nc5 (4.7% — Blancs: 36.7% | Nulles: 34.4% | Noirs: 28.9%)5...Qd7 (0.3% — Blancs: 40.0% | Nulles: 40.0% | Noirs: 20.0%)5...g6 (0.2%)5...Bg4 (0.1%) auto Analyse coup par coup — 8 demi-coups commentés 1.e4 Avancée centrale — contrôle d5, f5. Prépare d4, f4, Bc4, Bd3. 1...e5 Avancée centrale — contrôle d4, f4. Prépare d5, f5, Bc5. 2.Nf3 Contrôle c4, d4, d5, e5. 2...Nc6 Contrôle d4, f4, c5. 3.Bb5 Contrôle c4, d4, d5, e5. 3...a6 Coup prophylactique — empêche Nb5, Bb5. Prépare b5. 4.Ba4 Contrôle d4, d5, e5, f5. 4...Nf6…
C83 - 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3 Be7 - Ruy Lopez: Open, Classical Defense (438)

Base Masters : Blancs 25.3%, Nulles 60.3%, Noirs 14.4%. Coups candidats 5...Nbd2 (63.0% — Blancs: 22.1% | Nulles: 64.8% | Noirs: 13.1%)5...Be3 (15.7% — Blancs: 24.8% | Nulles: 58.4% | Noirs: 16.8%)5...Bc2 (10.2% — Blancs: 34.6% | Nulles: 49.4% | Noirs: 16.0%)5...Re1 (3.5% — Blancs: 46.4% | Nulles: 35.7% | Noirs: 17.9%)5...Qe2 (2.9% — Blancs: 34.8% | Nulles: 56.5% | Noirs: 8.7%)5...Bf4 (2.6% — Blancs: 23.8% | Nulles: 47.6% | Noirs: 28.6%) auto Analyse coup par coup — 8 demi-coups commentés 1.e4 Avancée centrale — contrôle d5, f5. Prépare d4, f4, Bc4, Bd3. 1...e5 Avancée centrale — contrôle d4, f4. Prépare d5, f5, Bc5. 2.Nf3 Contrôle c4, d4, d5, e5. 2...Nc6 Contrôle d4, f4, c5. 3.Bb5 Contrôle c4, d4, d5, e5. 3...a6 Coup prophylactique — empêche Nb5,…
C84 - 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 - Ruy Lopez: Closed (1066)

Base Masters : Blancs 28.4%, Nulles 54.9%, Noirs 16.7%. Coups candidats 5...Re1 (84.4% — Blancs: 28.0% | Nulles: 56.0% | Noirs: 16.0%)5...d3 (9.3% — Blancs: 31.4% | Nulles: 50.3% | Noirs: 18.3%)5...Bxc6 (4.0% — Blancs: 29.1% | Nulles: 48.5% | Noirs: 22.4%)5...Qe2 (1.4% — Blancs: 33.3% | Nulles: 40.0% | Noirs: 26.8%)5...d4 (0.5% — Blancs: 28.1% | Nulles: 47.4% | Noirs: 24.6%)5...Nc3 (0.2% — Blancs: 17.5% | Nulles: 57.3% | Noirs: 25.2%) auto Analyse coup par coup — 8 demi-coups commentés 1.e4 Avancée centrale — contrôle d5, f5. Prépare d4, f4, Bc4, Bd3. 1...e5 Avancée centrale — contrôle d4, f4. Prépare d5, f5, Bc5. 2.Nf3 Contrôle c4, d4, d5, e5. 2...Nc6 Contrôle d4, f4, c5. 3.Bb5 Contrôle c4, d4, d5, e5. 3...a6 Coup prophylactique — empêche Nb5,…
C85 - 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Bxc6 - Ruy Lopez: Closed, Delayed Exchange (425)

Base Masters : Blancs 29.1%, Nulles 48.5%, Noirs 22.4%. Coups candidats 5...dxc6 (99.0% — Blancs: 28.9% | Nulles: 48.7% | Noirs: 22.4%)5...bxc6 (1.0% — Blancs: 54.2% | Nulles: 29.2% | Noirs: 16.7%) auto Analyse coup par coup — 8 demi-coups commentés 1.e4 Avancée centrale — contrôle d5, f5. Prépare d4, f4, Bc4, Bd3. 1...e5 Avancée centrale — contrôle d4, f4. Prépare d5, f5, Bc5. 2.Nf3 Contrôle c4, d4, d5, e5. 2...Nc6 Contrôle d4, f4, c5. 3.Bb5 Contrôle c4, d4, d5, e5. 3...a6 Coup prophylactique — empêche Nb5, Bb5. Prépare b5. 4.Ba4 Contrôle d4, d5, e5, f5. 4...Nf6 Contrôle d4, e4, f4, c5. Structure de pions ♔ Blancs♚…
C86 - 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Qe2 - Ruy Lopez: Closed, Worrall Attack (526)

Base Masters : Blancs 32.8%, Nulles 41.0%, Noirs 26.1%. Coups candidats 5...b5 (93.4% — Blancs: 33.3% | Nulles: 41.1% | Noirs: 25.6%)5...d6 (5.5% — Blancs: 23.2% | Nulles: 44.6% | Noirs: 32.1%)5...O-O (1.2% — Blancs: 41.7% | Nulles: 16.7% | Noirs: 41.7%) auto Analyse coup par coup — 8 demi-coups commentés 1.e4 Avancée centrale — contrôle d5, f5. Prépare d4, f4, Bc4, Bd3. 1...e5 Avancée centrale — contrôle d4, f4. Prépare d5, f5, Bc5. 2.Nf3 Contrôle c4, d4, d5, e5. 2...Nc6 Contrôle d4, f4, c5. 3.Bb5 Contrôle c4, d4, d5, e5. 3...a6 Coup prophylactique — empêche Nb5, Bb5. Prépare b5. 4.Ba4 Contrôle d4, d5, e5, f5. 4...Nf6 Contrôle d4, e4, f4, c5.…
C87 - 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 - Spanish (494)

Base Masters : Blancs 30.1%, Nulles 52.6%, Noirs 17.3%. Coups candidats 5...c3 (70.6% — Blancs: 29.5% | Nulles: 51.7% | Noirs: 18.8%)5...Bxc6+ (26.6% — Blancs: 31.4% | Nulles: 55.3% | Noirs: 13.3%)5...d4 (1.1%)5...h3 (0.8% — Blancs: 16.7% | Nulles: 66.7% | Noirs: 16.7%)5...c4 (0.6% — Blancs: 50.0% | Nulles: 25.0% | Noirs: 25.0%)5...d3 (0.1%) auto Analyse coup par coup — 8 demi-coups commentés 1.e4 Avancée centrale — contrôle d5, f5. Prépare d4, f4, Bc4, Bd3. 1...e5 Avancée centrale — contrôle d4, f4. Prépare d5, f5, Bc5. 2.Nf3 Contrôle c4, d4, d5, e5. 2...Nc6 Contrôle d4, f4, c5. 3.Bb5 Contrôle c4, d4, d5, e5. 3...a6 Coup prophylactique — empêche Nb5, Bb5. Prépare b5. 4.Ba4 Contrôle d4, d5, e5, f5. 4...Nf6…
C88 - 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 - Spanish (1120)

Base Masters : Blancs 28.2%, Nulles 55.8%, Noirs 16.0%. Coups candidats 5...d6 (55.3% — Blancs: 32.4% | Nulles: 49.8% | Noirs: 17.8%)5...O-O (44.3% — Blancs: 23.0% | Nulles: 63.3% | Noirs: 13.7%)5...Bb7 (0.4% — Blancs: 30.6% | Nulles: 47.4% | Noirs: 22.0%)5...Na55...d55...h6 auto Analyse coup par coup — 8 demi-coups commentés 1.e4 Avancée centrale — contrôle d5, f5. Prépare d4, f4, Bc4, Bd3. 1...e5 Avancée centrale — contrôle d4, f4. Prépare d5, f5, Bc5. 2.Nf3 Contrôle c4, d4, d5, e5. 2...Nc6 Contrôle d4, f4, c5. 3.Bb5 Contrôle c4, d4, d5, e5. 3...a6 Coup prophylactique — empêche Nb5, Bb5. Prépare b5. 4.Ba4 Contrôle d4, d5, e5, f5. 4...Nf6 Contrôle d4, e4, f4, c5.…
C89 - 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5 - Ruy Lopez: Marshall Attack (371)

Base Masters : Blancs 13.8%, Nulles 75.7%, Noirs 10.4%. Coups candidats 5...exd5 (93.9% — Blancs: 13.3% | Nulles: 76.4% | Noirs: 10.3%)5...d4 (5.5% — Blancs: 22.4% | Nulles: 66.0% | Noirs: 11.6%)5...d3 (0.5% — Blancs: 20.0% | Nulles: 63.3% | Noirs: 16.7%)5...h3 (0.1%) auto Analyse coup par coup — 8 demi-coups commentés 1.e4 Avancée centrale — contrôle d5, f5. Prépare d4, f4, Bc4, Bd3. 1...e5 Avancée centrale — contrôle d4, f4. Prépare d5, f5, Bc5. 2.Nf3 Contrôle c4, d4, d5, e5. 2...Nc6 Contrôle d4, f4, c5. 3.Bb5 Contrôle c4, d4, d5, e5. 3...a6 Coup prophylactique — empêche Nb5, Bb5. Prépare b5. 4.Ba4 Contrôle d4, d5, e5, f5. 4...Nf6 Contrôle d4, e4, f4, c5.…