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B07o — Czech (1931)
1.e4 d6 2.d4 Nf6 3.Nc3 c6 4.Nf3
Les coups candidats
4…Bg4 — 68.4% (3730 parties)
Ambassadeurs : Pribyl, Josef (24x), Villing, Dieter (23x), De Santis, Alessio (21x), Galego, Luis (20x), Krasenkow, Michal (20x), Willmoth, Robert F (14x), Mira, Helene (14x), Pakleza, Zbigniew (11x)
4…g6 — 12.0% (652 parties)
Ambassadeurs : Stuhlik, Marko (10x), Breustedt, Werner (6x), Tochtermann, Georg, Dr. (5x), Toth, Kazmer (5x), Barc, Michal (4x), Garbarino, Rodolfo (3x), Vukovic, Ivo (3x), Hidalgo Santana, Fernando (3x)
4…Qa5 — 10.9% (592 parties)
Ambassadeurs : Szirmai, Eduard (8x), Ivanov, Alexander Al. (6x), Gionfriddo, Mario (6x), De Borba, Gabriel (5x), Rakhmangulov, Andrei (5x), Watfe, Rodrigo (4x), Ratcu, Tatiana (4x), Forster, William (4x)
4…Nbd7 — 3.5% (191 parties)
Ambassadeurs : Gazik, Igor (2x), Chabot, Roland (2x), Sourek, Vladimir (2x), Dobrowolski, Marcin (2x), Manilyk, Andrei (2x), Gil Juan, German (2x), Malakhova, Elizaveta (2x), Damjanovic, Adam (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…Bg4 4…g6 4…Qa5 4…Nbd7
<1800 467 59% 13% 15% 7%
1800-2200 2634 67% 12% 11% 4%
2200-2600 1549 76% 11% 8% 1%
2600+ 16 69% 12% 19%
Évolution par décennie (% des parties)
Décennie N parties 4…Bg4 4…g6 4…Qa5 4…Nbd7
1950s 12 92% 8%
1960s 14 29% 64%
1970s 12 42% 42% 8%
1980s 153 77% 12% 7% 1%
1990s 1314 72% 12% 10% 2%
2000s 1686 69% 11% 10% 4%
2010s 1804 68% 12% 10% 4%
2020s 456 57% 12% 24% 2%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…Bg4 68% 57% ▼ -10.8%
4…g6 12% 12% +0.2%
4…Qa5 10% 24% ▲ +14.1%
4…Nbd7 4% 2% ▼ -2.2%
Joueurs célèbres
Champions du monde dans cette position
Kasparov, Garry — 1 partie
Kramnik, Vladimir — 1 partie
Karpov, Anatoly — 1 partie
Hou, Yifan — 1 partie
Parties historiques
4…Bg4 — 68.4% (3730 parties)
1952 — Averbakh, Yuri L vs Simagin, Vladimir — 0-1 — Moscow RUS
1953 — Shaposhnikov, Yury vs Strekalovski, Viktor — 1-0 — Leningrad RUS
1955 — Kasparian, Genrikh vs Matskevich, Avshalom — 1/2-1/2 — chT
1955 — Dubinin, Peter vs Shaposhnikov, Yury — 1-0 — corr ch-SU
1956 — Balogh, Janos vs Napolitano, Mario — 1/2-1/2 — ?
4…g6 — 12.0% (652 parties)
1958 — Piazzini, Luis vs Dominguez, Cristobal — 1/2-1/2 — Buenos Aires ARG
1961 — Giustolisi, Alberto vs Sanz Aguado, Jose — 1-0 — Reggio Emilia ITA
1961 — Canal, Esteban vs Sanz Claramonte, Jose A. — 1-0 — Reggio Emilia ITA
1962 — Sokolov, Vladimir vs Udovcic, Mijo — 1/2-1/2 — JUG-ch Skopje MKD
1963 — Kluger, Gyula vs Koberl, Ferenc — 1/2-1/2 — Budapest ch-HUN
4…Qa5 — 10.9% (592 parties)
1985 — Roselli, Juan Pablo vs Etcheverry, Eduardo — 0-1 — Uruguay
1988 — Magomedov, Magaram vs Kantsler, Boris — 0-1 — Tallinn EST
1989 — Groszpeter, Attila vs Radulov, Ivan — 1-0 — Biel open
1989 — Vreeken, Corry vs Prins, Lodewijk — 0-1 — Palma de Mallorca open
1989 — Moldobaev, Emil vs Kantsler, Boris — 1-0 — Frunze KGZ
4…Nbd7 — 3.5% (191 parties)
1974 — Damjanovic, Adam vs Udovcic, Tibor — 1-0 — Yugoslavia
1987 — Gallagher, Joseph G. vs Gazik, Igor — 1-0 — Geneva SUI
1987 — Gosig vs Gazik, Igor — 1-0 — Budapest HUN
1990 — Huss, Rolf vs Just, Hannes — 0-1 — Hessen
1990 — Enkhbat, Tegshsuren vs Meister, Jakob — 0-1 — Chelyabinsk RUS