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B25h — Closed (1956)
1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.f4 Nf6 7.Nf3
Les coups candidats
7…O-O — 65.0% (2037 parties)
Ambassadeurs : Detela, Walter (20x), Sosonko, Gennadi (5x), Laine, Jari (5x), Valner, Uku (5x), Karaoglan, Doruk (5x), Medina-Garcia, Antonio (4x), De Coverly, Roger D (4x), Claesen, Jeroen (4x)
7…Bg4 — 16.6% (519 parties)
Ambassadeurs : Brodie, Hugh (3x), Zichichi, Alvise (2x), Capece, Adolivio (2x), Brown, Paul (2x), Roggeveen, M. (2x), ? (2x), Hartoch, Robert G (2x), Wouterson, R. (2x)
7…Rb8 — 4.6% (145 parties)
Ambassadeurs : Moore, John C (3x), Salcher, Felix (1x), Cabbouche, Khalil (1x), Spassky, Boris V. (1x), Benko, Pal (1x), Fahnenschmidt, Gerhard (1x), Veeck, Kurt (1x), Shean, Robert (1x)
7…Bd7 — 4.1% (127 parties)
Ambassadeurs : Hoen, Ragnar Harald (2x), Laczay, Istvan Dr (2x), Redolfi, Argentino Rodolfo (1x), Beni, Alfred (1x), Drapal, Robert (1x), Vodicka, Vlastimil (1x), Kupferstich, Moises (1x), Aarflot, Morten (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 7…O-O 7…Bg4 7…Rb8 7…Bd7
<1800 301 58% 20% 3% 6%
1800-2200 1613 64% 16% 5% 4%
2200-2600 617 79% 12% 4% 2%
2600+ 6 67% 33% — —
Évolution par décennie (% des parties)
Décennie N parties 7…O-O 7…Bg4 7…Rb8 7…Bd7
1950s 11 64% — — 18%
1960s 56 62% 12% 12% 4%
1970s 80 59% 14% 6% 9%
1980s 97 69% 18% 4% —
1990s 618 60% 19% 5% 6%
2000s 1078 67% 15% 3% 4%
2010s 1030 66% 17% 5% 3%
2020s 164 68% 13% 10% 1%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
7…O-O 66% 68% ▲ +2.0%
7…Bg4 17% 13% ▼ -3.7%
7…Rb8 5% 10% ▲ +5.0%
7…Bd7 3% 1% ▼ -2.0%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Anatoly — 1 partie
Tal, Mikhail — 1 partie
Kasparov, Garry — 1 partie
Parties historiques
7…O-O — 65.0% (2037 parties)
1952 — Karastoichev, Emil vs Filipov, Filip — 1/2-1/2 — Sofia BUL
1953 — Taylor, John vs Berner, George — 0-1 — Winnipeg CAN
1955 — Pinkus, Lutz vs Bisguier, Arthur B — 0-1 — New York, NY USA
1955 — Borsony, Valt vs Milic, Borislav — 1-0 — cr.
1958 — Handel, Horst vs Tringov, Georgi P — 0-1 — Varna BUL
7…Bg4 — 16.6% (519 parties)
1961 — Milev, Zdravko vs Drumev, Avram — 1-0 — Sofia BUL
1965 — Levens, David G vs Capece, Adolivio — 0-1 — Hastings ENG
1966 — Zichichi, Alvise vs Olivera, Alfredo — 1-0 — Havana CUB
1966 — Ali Gatee vs Aloni, Itzchak — 1-0 — Tel Aviv ISR
1967 — Zichichi, Alvise vs Magrin, Antonio — 1/2-1/2 — Savona ch ITA
7…Rb8 — 4.6% (145 parties)
1960 — Fuller, Ronald A vs Bennett, Patrick — 1/2-1/2 — Leicester
1963 — Fahnenschmidt, Gerhard vs Veeck, Kurt — 1-0 — Nt Helmbrechts GER
1964 — Bhend, Edwin vs Attard, Wilfred — 1/2-1/2 — Kecskemet HUN
1966 — Barki, Nelson vs Tomas, David — 0-1 — Cordoba ARG
1968 — Salcher, Felix vs Cabbouche, Khalil — 1/2-1/2 — Lugano SUI
7…Bd7 — 4.1% (127 parties)
1953 — Kupferstich, Moises vs Aarflot, Morten — 1-0 — Copenhagen DEN
1958 — Redolfi, Argentino Rodolfo vs Beni, Alfred — 1/2-1/2 — Munich GER
1961 — Milev, Zdravko vs Dimitrov Iliev, Ilia — 1-0 — Sofia BUL
1966 — Drapal, Robert vs Vodicka, Vlastimil — 0-1 — Prague CZE
1970 — Hoen, Ragnar Harald vs Gouder, A — 1-0 — Siegen olm