C88k - 8…b4 - Closed, Anti-Marshall 8.a4 b4 (1925)

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C88k — Closed, Anti-Marshall 8.a4 b4 (1925)
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.a4 b4
Les coups candidats
9.d3 — 40.7% (2026 parties)
Ambassadeurs : Grischuk, Alexander (12x), Adams, Michael (10x), Beckett, Phillip J (10x), Pommrich, Rainer (10x), Sorcinelli, Andrea (10x), ? (9x), Bernal Varela, Nelson (9x), Kireev, Sergey (9x)
9.d4 — 32.5% (1620 parties)
Ambassadeurs : Aronian, Levon (23x), Domancich, Ezequiel Martín (10x), Kupreichik, Viktor D (9x), Harikrishna, Pentala (9x), Dominguez Perez, Leinier (9x), Ding, Liren (8x), Mauro, Lucio (7x), Osipov, Anatoly (7x)
9.a5 — 17.7% (882 parties)
Ambassadeurs : Malyshev, Vladimir Pavlovich (10x), Ilyasov, Anatoly Fedorovich (9x), Harvey, Donald J (9x), Pereira, Nilson José Espindo (8x), Hameister, Raik (8x), Vachier-Lagrave, Maxime (7x), Aronian, Levon (6x), Schakel, Corky (6x)
9.c3 — 7.7% (383 parties)
Ambassadeurs : Tal, Mikhail (4x), Beckett, Phillip J (4x), Lukin, Andrei M (3x), Stancin, Ana (3x), Spiel, Marianne (3x), Zapata, Alonso (3x), Ortiz Galvan, Manuel Eliu (3x), Luers, Lavas (3x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9.d3 9.d4 9.a5 9.c3
<1800 224 33% 30% 18% 14%
1800-2200 1821 41% 30% 17% 10%
2200-2600 2135 40% 35% 20% 4%
2600+ 357 40% 43% 16% 1%
Évolution par décennie (% des parties)
Décennie N parties 9.d3 9.d4 9.a5 9.c3
1950s 10 20% 60% 10% —
1960s 94 48% 24% 7% 18%
1970s 51 25% 43% 12% 20%
1980s 98 21% 39% 17% 20%
1990s 308 44% 23% 10% 21%
2000s 964 61% 20% 6% 10%
2010s 2159 40% 35% 17% 6%
2020s 1297 27% 39% 30% 3%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9.d3 40% 27% ▼ -12.8%
9.d4 35% 39% ▲ +4.6%
9.a5 17% 30% ▲ +12.2%
9.c3 6% 3% ▼ -3.2%
Joueurs célèbres
Champions du monde dans cette position
Anand, Viswanathan — 10 parties
Carlsen, Magnus — 10 parties
Ding, Liren — 10 parties
Tal, Mikhail — 6 parties
Kasparov, Garry — 3 parties
Hou, Yifan — 3 parties
Karpov, Anatoly — 1 partie
Kramnik, Vladimir — 1 partie
Ju, Wenjun — 1 partie
Parties historiques
9.d3 — 40.7% (2026 parties)
1957 — Matulovic, Milan vs Nedeljkovic, Srecko M — 1/2-1/2 — Sombor
1959 — Joppen, Egon vs Van Donk, Henk — 1-0 — Amersfoort
1961 — Djurasevic, Bozidar vs Geller, Efim P. — 1/2-1/2 — Belgrade SRB
1961 — Soby, Frode vs Djait, H. — 0-1 — Helsinki FIN
1962 — Parma, Bruno vs Sanguineti, Raúl Carlos — 1/2-1/2 — Mar del Plata ARG
9.d4 — 32.5% (1620 parties)
1952 — Vasconcellos, Fernando O vs Santiago Oliveira, Ernani — 0-1 — Sao Paulo BRA
1953 — Pilnik, Herman vs Shocron, Ruben — 1/2-1/2 — Mar del Plata ARG
1955 — Keres, Paul Petrovich vs Smyslov, Vasily — 0-1 — Moskva ch-SU
1957 — CHUKS, Smith Daniel vs Haines, William C — 1/2-1/2 — ?
1958 — Sanguinetti, Raul vs Benko, Francisco — 1/2-1/2 — Buenos Aires ARG
9.a5 — 17.7% (882 parties)
1951 — Steiner, Lajos vs Karoly, George — 1-0 — Brisbane AUS
1964 — Hindle, Owen M vs Chalkhasuren, Gonchich — 1/2-1/2 — Tel Aviv ISR
1966 — Dely, Peter vs Ozsvath, Andras — 0-1 — ?
1966 — Liberzon, Vladimir M vs Nikolaevsky, Yuri V — 1/2-1/2 — Moskva tt
1966 — Liberzon, Roman vs Nikolaevsky, Yuri V — 1/2-1/2 — USSR
9.c3 — 7.7% (383 parties)
1961 — Matulovic, Milan vs Kraidman, Yair — 1-0 — Netanya ISR
1963 — Gipslis, Aivars vs Zakharov, Alexander — 1-0 — Ch URS, Leningrad RUS
1964 — Kolvig, Bent vs Yepez, Olavo — 1-0 — Tel Aviv olm
1964 — Urbanec, Miroslav vs Kadriov, Shukri — 1/2-1/2 — ?
1965 — OBrien, Erik Michael vs Wilson, Doug — 1-0 — Santa Rosa Chess Club