Structure de pions
♔ Blancs ♚ Noirs
Pions doublés — —
Pions isolés — —
Arriérés — —
Chaînes — ● b7→a6
Passés — —
Majorité — —
Cases
♔ Blancs ♚ Noirs
Cases fortes — ● b4 (2v0), ● d4 (2v1)
Cases faibles — —
Centre — ● d4 (2v1)
Colonnes et diagonales
♔ Blancs ♚ Noirs
Pièces
♔ Blancs ♚ Noirs
Bc1 ● Bc1 Non développé (mob. 0)
Ba4 ● Ba4 Ok (mob. 3)
Be7 ● Be7 Actif (mob. 5)
Bc8 ● Bc8 Non développé (mob. 0)
Paire de fous ● Oui ● Oui
Non développées 3 (● b1, ● c1, ● a1) 3 (● c8, ● 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 fermé
Ruptures ● d2-d4 ● …d7-d5

C87a — Spanish: Closed, 6.Re1

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 *   ● Trait aux Noirs

Ouverture — Centre fermé

♔ Point de vue Blancs

8 7 6 5 4 3 2 1
bR
bB
bQ
bK
bR
bP
bP
bP
bB
bP
bP
bP
bP
bN
bN
bPPion sous pression
wB
wPPion central
wN
wP
wP
wP
wP
wP
wP
wP
wR
wN
wB
wQ
wR
wK
abcdefgh
Plans. Bb3 (Fou actif (mobilité 5) — 97 % des parties) ; c3 (Renforcer le centre — 2 % des parties).

♚ Point de vue Noirs

1 2 3 4 5 6 7 8
wK
wR
wQ
wB
wN
wR
wP
wP
wP
wP
wP
wP
wP
wN
wP
Case forte (2v1)
Case forte (2v0)
wB
bPPion sous pression
bN
bN
bP
bP
bP
bP
bBFou actif — mobilité 5
bP
bP
bP
bR
bK
bQ
bB
bR
hgfedcba
Plans. ...b5 (Expansion aile dame — 97 % des parties) ; ...d6 (Libérer Bc8 — 2 % des parties).
Avantages
Faiblesses
Diagonale active
Plans
Partie
1926 Chicago – Round 11 – Maroczy, Geza – 1-0 – Showalter, Jackson – G23
1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 O-O 7. Bxc6 dxc6 8. Nxe5 Bd6 9. Nf3 Re8 10. e5 Bg4
1957 EU corr – Round ? – Tiemann, Christoph – 1-0 – Montag, Andreas – G9
1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 O-O 7. Bxc6 dxc6 8. Nxe5 Re8 9. d4 Bd6 10. Bf4 c5
1963 Stevenson Memorial 11th – Round 7 – Collins, Richard Arnold – 1-0 – Barham, JD. – G13
1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 O-O 7. Bxc6 dxc6 8. Nxe5 Bd6 9. Nf3 Bg4 10. e5 Re8
1964 Tel Aviv ISR – Round 8 – Aitken, James – 1/2-1/2 – Silva Nazzari, Raul R – G29
1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 O-O 7. Bxc6 dxc6 8. Nxe5 Re8 9. Nf3 Bg4 10. e5 Nd5
1966 Havana CUB – Round 5 – Garcia Martinez, Silvino – 1-0 – Barroso Caro, Alberto – G40
1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 O-O 7. Bxc6 bxc6 8. Nxe5 c5 9. d3 Bb7 10. c4 d6

C87a — Closed (1926)
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1
Les coups candidats
Ambassadeurs : ? (426x), Geller, Efim P. (268x), Romanishin, Oleg M (230x), Beliavsky, Alexander G (220x), Ivkov, Borislav (219x), Zielinski, Sergej (215x), Tal, Mikhail (205x), Matanovic, Aleksandar (191x)
Ambassadeurs : Romanishin, Oleg M (53x), Petrosian, Arshak B (29x), Mayorau, Mikita (21x), Sokolov, Ivan (16x), Ivkov, Borislav (15x), Adams, Michael (15x), Malewicz, Frank (14x), Panov, Dmitry (12x)
6…O-O — 0.6% (776 parties)
Ambassadeurs : Basson, Heinrich (8x), Bladyko, Pawel (6x), Warwaszynski, Zbigniew (6x), Nittschalk, Karl (5x), Krunski, Jan Maria (5x), Raisanen, Kim (5x), Hakuc, Waclaw (4x), Van Esbroeck, Jeff (4x)
6…b6 — 0.0% (14 parties)
Ambassadeurs : Kauranen, Risto (1x), Heilimo, Eino (1x), Littlewood, Norman (1x), O'Kelly de Galway, Alberic (1x), Chandler, Murray G (1x), Nunn, John D M (1x), Sagorovsky (1x), Preinfalk, Anton (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 6…b5 6…d6 6…O-O 6…b6
<1800 6271 96% 2% 2% 0%
1800-2200 43430 98% 1% 1% 0%
2200-2600 53946 99% 1% 0% 0%
2600+ 4311 98% 2% 0% 0%
Évolution par décennie (% des parties)
Décennie N parties 6…b5 6…d6 6…O-O 6…b6
1950s 1749 98% 2% 0% —
1960s 4153 96% 3% 0% 0%
1970s 4354 97% 3% 0% 0%
1980s 7338 98% 1% 0% 0%
1990s 15076 98% 2% 1% 0%
2000s 32459 97% 2% 1% 0%
2010s 49725 98% 1% 1% 0%
2020s 14671 99% 1% 0% 0%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
6…b5 98% 99% ▲ +0.5%
6…d6 1% 1% -0.3%
6…O-O 1% 0% -0.2%
6…b6 0% 0% +0.0%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 10 parties
Karpov, Anatoly — 10 parties
Botvinnik, Mikhail — 10 parties
Smyslov, Vladimir — 10 parties
Anand, Viswanathan — 10 parties
Kasparov, Garry — 10 parties
Kramnik, Vladimir — 10 parties
Carlsen, Magnus — 10 parties
Hou, Yifan — 10 parties
Ding, Liren — 10 parties
Gukesh D — 7 parties
Karpov, Aleksandr — 6 parties
Smyslov, Vassily — 2 parties
Ju, Wenjun — 2 parties
Lasker, Emanuel — 1 partie
Fischer, Robert James — 1 partie
Parties historiques
6…b5 — 97.8% (126697 parties)
1950 — Hess, Ralf E. vs Burghold, C. — 1/2-1/2 — Lucerne SUI
1950 — Mangini, Jose Henrique de Mello vs De Souza Mendes, Joao — 1-0 — Rio de Janeiro BRA
1950 — Bronstein, David I vs Keres, Paul — 1-0 — Budapest HUN
1950 — Konstantinopolsky, Alexander vs Borisenko, Georgy K — 1/2-1/2 — Moskou ch-URS
1950 — Petrosian, Tigran V. vs Zagoriansky, Evgeny — 1/2-1/2 — Moscow ch
6…d6 — 1.6% (2009 parties)
1950 — Koblencs, Alexander vs Alatortsev, Vladimir N. — 0-1 — URS-ch sf Leningard
1952 — Boleslavsky, Isaac vs Keres, Paul Petrovich — 1/2-1/2 — Moscow RUS
1952 — Fairhurst, William vs Penrose, Jonathan — 0-1 — White Rock Pavilion
1952 — Ignatenko, P. vs Hanks, John — 0-1 — Melbourne AUS
1953 — Averbakh, Yuri L vs Keres, Paul Petrovich — 1/2-1/2 — Garga
6…O-O — 0.6% (776 parties)
1953 — Estrada Degrandi, Walter vs Etcheverry, Eduardo — 1-0 — Montevideo Montevideo URU
1955 — Milic, Borislav vs Ballbe Anglada, Francisco — 1-0 — Lyon FRA
1956 — Fischer, Kevin R vs Hurttlen, N. — 1/2-1/2 — Washington open
1956 — Fischer, Robert J vs Hurttlen, Norman — 1/2-1/2 — Washington, DC USA
1957 — Tiemann, Christoph vs Montag, Andreas — 1-0 — EU corr
6…b6 — 0.0% (14 parties)
1965 — Kauranen, Risto vs Heilimo, Eino — 1-0 — ?
1965 — Littlewood, Norman vs O'Kelly de Galway, Alberic — 0-1 — Bognor Regis
1978 — Sagorovsky vs Preinfalk, Anton — 1/2-1/2 — corr Vidmar mem
1988 — Chandler, Murray G vs Nunn, John D M — 1/2-1/2 — Linares
1993 — Kasperski, Achim vs Bortkun, Adam — 1/2-1/2 — cr.