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A25k — Closed
1.c4 e5 2.Nc3 Nc6 3.g3 Nf6 4.Bg2
Eval: [+0.34]
Les coups candidats
Ambassadeurs : Vetter, Udo (28x), Korneev, Oleg (24x), Malewicz, Frank (18x), Miezis, Normunds (16x), Vecek, Marjan (13x), Hillebrand, Carsten (12x), Owens, Johnny (12x), Hjorth, Jesper (12x)
Ambassadeurs : Popov, Vladimir Valentinovich (18x), Owens, Johnny (12x), Polak, Tomas (11x), Mostowik, Daniel (8x), Suba, Mihai (7x), Vokhidov, Shamsiddin (7x), Bonoldi, Fabio (7x), Ruck, Robert (6x)
4…g6 — 7.8% (1022 parties)
Ambassadeurs : Ljangov, Petar (6x), August, Christian (3x), Galego, Luis (3x), Nemes, Gyorgy (3x), Artemiev, Vladislav (3x), Vecek, Marjan (3x), Naranja, Renato (2x), Vajda, Arpad (2x)
4…Be7 — 7.5% (984 parties)
Ambassadeurs : Weyerstrass, Ronald (3x), Winter, Irene (3x), Sprenger, Wendelin (3x), Flecher, Joseph (3x), Laco, Giuseppe (3x), Praggnanandhaa R (3x), Richter, Kurt P (2x), Chonillo, Javier (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…Bc5 4…Bb4 4…g6 4…Be7
<1800 704 44% 23% 6% 11%
1800-2200 5351 42% 32% 7% 9%
2200-2600 3823 46% 39% 9% 3%
2600+ 99 44% 37% 16% 1%
Évolution par décennie (% des parties)
Décennie N parties 4…Bc5 4…Bb4 4…g6 4…Be7
1900s 2 50% 50%
1910s 2 50%
1920s 14 57% 21% 7%
1930s 34 32% 29% 9% 18%
1940s 18 50% 17% 22% 11%
1950s 38 42% 11% 21% 13%
1960s 70 23% 23% 16% 16%
1970s 156 16% 47% 16% 8%
1980s 345 23% 38% 13% 11%
1990s 1767 34% 35% 11% 10%
2000s 3790 43% 31% 7% 8%
2010s 6097 49% 31% 6% 7%
2020s 842 40% 39% 8% 4%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…Bc5 49% 40% ▼ -8.4%
4…Bb4 31% 39% ▲ +8.0%
4…g6 6% 8% ▲ +1.9%
4…Be7 7% 4% ▼ -2.9%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Anatoly — 4 parties
Smyslov, Vladimir — 3 parties
Anand, Viswanathan — 2 parties
Alekhine, Alexander — 1 partie
Botvinnik, Mikhail — 1 partie
Kramnik, Vladimir — 1 partie
Carlsen, Magnus — 1 partie
Parties historiques
4…Bc5 — 43.3% (5704 parties)
1901 — Blackburne, Joseph vs Marshall, Frank — 1-0 — Monte Carlo MNC
1920 — John, Walter vs Berndtsson, Karl — 1/2-1/2 — Goteborg SWE
1925 — Koltanowski, George vs Colle, Edgar — 1/2-1/2 — Gand
1925 — Koltanowski, George vs Colle, Edgar — 1/2-1/2 — Brussels BEL
1925 — Tartakower, Savielly vs Gruenfeld, Ernst — 1-0 — Marienbad CZE
4…Bb4 — 32.0% (4222 parties)
1922 — Alekhine, Alexander vs Villeneau — 1-0 — Paris FRA
1926 — Kaprinay vs Hubner, Harald — 1-0 — Berlin GER
1926 — Kaprinay vs Huebner, Alan-Ari — 1-0 — FS 1930
1930 — Kashdan, Isaac vs Mieses, Jacques — 1-0 — Frankfurt GER
1933 — Mueller, Hans vs Glass, Eduard — 1-0 — Vienna AUT
4…g6 — 7.8% (1022 parties)
1929 — Capablanca, Jose vs Michell, Reginald — 1-0 — Ramsgate
1937 — Goldstein, Maurice Edwards vs Crowl, Frank Arthur — 1-0 — Perth AUS
1939 — Neikirkh, Oleg vs Gromer, Aristide — 1/2-1/2 — Buenos Aires ARG
1939 — Gonzalez Petrov, Daniel vs Vinuesa, Juan — 1-0 — Rosario ARG
1945 — Dzhogov, Vladislav vs Dimitrov Krastev, Krastjo — 0-1 — Sofia BUL
4…Be7 — 7.5% (984 parties)
1905 — Levitsky, Stepan vs Cigorin, Michael Ivanovic — 0-1 — St Petersburg RUS
1911 — Alapin, Simon vs Suechting, Hugo — 1/2-1/2 — Carlsbad CZE
1933 — Schmitt, Lars, Dr. vs Richter, Kurt P — 1-0 — Bad Salzbrunn
1933 — John, Walter vs Richter, Kurt P — 1-0 — Bad Salzbrunn
1933 — Feigin, M. vs Norcia, Fabrizio — 1-0 — Folkestone ENG