A40q — Keres Defence
1.d4 e6 2.c4 Bb4+ 3.Bd2 Bxd2+
Eval: [+0.30]
Les coups candidats
4.Qxd2 — 87.7% (981 parties)
Ambassadeurs : Arkell, Keith C (45x), Kosic, Dragan (35x), Etmans, Maarten (21x), Zvjaginsev, Vadim (15x), Markidis, Konstantinos (10x), Bischoff, Klaus (10x), Juksta, Karolis (9x), Kovacevic, Blazimir (8x)
4.Nxd2 — 12.3% (137 parties)
Ambassadeurs : Kosic, Dragan (6x), von Rosenberg, Clemens (3x), Steves, Dayanand (3x), Postny, Evgeny (3x), Arkell, Keith C (3x), Nittschalk, Karl (2x), Pluta, Paulius (2x), Sheward, Alexander (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4.Qxd2 4.Nxd2
<1800 39 77% 23%
1800-2200 298 82% 18%
2200-2600 585 94% 6%
2600+ 46 96% 4%
Évolution par décennie (% des parties)
Décennie N parties 4.Qxd2 4.Nxd2
1870s 1 100%
1910s 1 100%
1920s 1 100%
1930s 7 86% 14%
1940s 2 100%
1950s 5 80% 20%
1960s 6 83% 17%
1970s 3 100%
1980s 38 84% 16%
1990s 150 89% 11%
2000s 221 82% 18%
2010s 565 88% 12%
2020s 118 97% 3%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4.Qxd2 88% 97% ▲ +8.5%
4.Nxd2 12% 3% ▼ -8.5%
Joueurs célèbres
Champions du monde dans cette position
Carlsen, Magnus — 4 parties
Botvinnik, Mikhail — 2 parties
Karpov, Aleksandr — 2 parties
Ju, Wenjun — 1 partie
Kramnik, Vladimir — 1 partie
Parties historiques
4.Qxd2 — 87.7% (981 parties)
1914 — Vidmar, Milan Sr vs Reti, Richard — 1-0 — Mannheim GER
1925 — Rubinstein, Akiba vs Levenfish, Grigory — 1-0 — Moscow RUS
1930 — Mueller, Hans vs Koenig, Imre — 1-0 — Vienna AUT
1931 — Glass, Eduard vs Koenig, Imre — 1/2-1/2 — Trebitsch mem14
1932 — Botvinnik, Mikhail vs Alatortsev, Vladimir N. — 1-0 — Leningrad masters
4.Nxd2 — 12.3% (137 parties)
1877 — Riemann, Fritz vs Anderssen, Adolf — 1/2-1/2 — Breslau GER
1931 — Becker Griesbeck, Achille vs Przepiorka, Dawid — 1-0 — Prague ol Prague CZE
1956 — Evans, Larry vs Shipman, Walter — 1/2-1/2 — New York, NY USA
1967 — Kozlovskaya, Valentina vs ? — 1-0 — ?
1982 — De Wind, Joris vs Etmans, Maarten — 1/2-1/2 — NLD-ch11 corr8183