A23a - 4.* - King's English Variation, Two Knights Variation, Keres Variation (1954)

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A23a — King's English Variation, Two Knights Variation, Keres Variation (1954)
1.c4 e5 2.Nc3 Nf6 3.g3 c6
Les coups candidats
Ambassadeurs : Vetter, Udo (13x), von Rosenberg, Clemens (7x), Kudoke, Willy (6x), Basagic, Zlatko (6x), Boll, Peter (5x), Stavrakakis, Vasilios (4x), Keres, Paul (3x), Fraidakis, Pantelis (3x)
Ambassadeurs : Miezis, Normunds (15x), Leisebein, Peter (11x), Grott, Peter (9x), Taimanov, Mark (8x), Schuler, Georg (8x), Keres, Paul (7x), Golz, Werner (7x), Ivkov, Borislav (6x)
4.d4 — 25.0% (1281 parties)
Ambassadeurs : Miezis, Normunds (9x), Keres, Paul (5x), Leisebein, Peter (5x), Weyerstrass, Ronald (4x), Boll, Peter (4x), Uhlmann, Wolfgang (2x), Pirc, Vasja (2x), Van Oostrum, Henk (2x)
4.e4 — 3.2% (165 parties)
Ambassadeurs : Fraidakis, Pantelis (2x), Tausch, Dirk (2x), Jamba, Alexandru (2x), McGill, Derek (2x), Eisgrau, Sigfried (1x), Geller, Adam (1x), Deslauriers, J. (1x), Groiss, Werner (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4.Bg2 4.Nf3 4.d4 4.e4
<1800 507 56% 19% 17% 6%
1800-2200 2128 38% 26% 29% 4%
2200-2600 1032 20% 40% 38% 1%
2600+ 23 4% 61% 35% —
Évolution par décennie (% des parties)
Décennie N parties 4.Bg2 4.Nf3 4.d4 4.e4
1950s 70 30% 41% 27% 1%
1960s 175 22% 67% 10% 1%
1970s 259 18% 63% 17% 0%
1980s 314 25% 53% 18% 2%
1990s 943 40% 36% 20% 3%
2000s 1456 43% 26% 25% 3%
2010s 1391 41% 22% 32% 4%
2020s 508 27% 37% 29% 5%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4.Bg2 41% 27% ▼ -13.7%
4.Nf3 22% 37% ▲ +15.8%
4.d4 32% 29% ▼ -3.3%
4.e4 4% 5% ▲ +1.6%
Joueurs célèbres
Champions du monde dans cette position
Botvinnik, Mikhail — 6 parties
Tal, Mikhail — 3 parties
Karpov, Anatoly — 2 parties
Kasparov, Garry — 2 parties
Parties historiques
4.Bg2 — 36.9% (1889 parties)
1950 — Szilagyi, Gyorgy Laszlo vs Sebestyen, Balazs — 1/2-1/2 — Budapest HUN
1952 — Griffiths, Derek Francis K vs Rosselson, Leon — 1/2-1/2 — Hastings ENG
1956 — Szabo, Laszlo vs Keres, Paul — 1-0 — Moscow RUS
1956 — Szabo, Ladislav vs Keres, Paul — 1-0 — Moscow RUS
1956 — Bidev, Pavle vs Pirc, Vasja — 0-1 — Rogatska
4.Nf3 — 32.9% (1684 parties)
1955 — Averbakh, Yuri L vs Ragozin, Viacheslav — 1-0 — USSR
1955 — Taimanov, Mark vs Gawliczek, Andreas — 1/2-1/2 — Lodz POL
1955 — Taimanov, Mark vs Vladimirov, Boris T — 1/2-1/2 — Leningrad RUS
1957 — Taimanov, Mark vs Mikenas, Vladas — 1/2-1/2 — Moskou ch-URS
1957 — Korchnoi, Viktor vs Keres, Paul — 1/2-1/2 — Moscow ch-URS
4.d4 — 25.0% (1281 parties)
1954 — Taimanov, Mark vs Shamkovich, Leonid — 1/2-1/2 — Leningrad ch22-SU sf
1955 — Pachman, Ludek vs Auer, Franz — 1-0 — Prague CZE
1955 — Goldberg, Grigory vs Abanin, Vladimir — 1/2-1/2 — Moscow RUS
1955 — Heinicke, Herbert vs Teschner, Rudolf — 1/2-1/2 — Hamburg GER
1956 — Uhlmann, Wolfgang vs Gligoric, Ana — 0-1 — Moscow RUS
4.e4 — 3.2% (165 parties)
1950 — Eisgrau, Sigfried vs Geller, Adam — 1-0 — Los Angeles, CA USA
1960 — Deslauriers, J. vs Groiss, Werner — 0-1 — Leipzig GER
1976 — Seliger, Bedrich vs Radojevic, Zoran M — 1/2-1/2 — Decin CZE
1982 — Whymark vs Naldrett, Geoffrey — 1-0 — corr GB
1984 — Naehr, Erik vs Nilsson, Abby — 0-1 — Frederiksvark