D24a —
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.Nc3
Les coups candidats
Ambassadeurs : Miles, Anthony J (15x), Ibragimov, Ildar (13x), Heinbuch, Detlef Ulrich (9x), Bernard, Ryszard (9x), Fominyh, Alexander (9x), Raetsky, Alexander (9x), Putzbach, Gerd (8x), Zoebisch, Herbert (8x)
Ambassadeurs : Magem Badals, Jordi (12x), De La Villa Garcia, Jesus Maria (9x), Jonkman, Harmen (9x), Kucera, Petr (8x), Rantanen, Yrjo A. (6x), Lorenz, Oda (6x), Yakovich, Yuri (6x), Brunner, Lucas (6x)
Ambassadeurs : Huebner, Robert (20x), Matulovic, Milan (18x), Velikov, Petar (13x), Ehlvest, Jaan (10x), Marjanovic, Slavoljub (10x), Drasko, Milan (9x), Korchut, Adam (9x), Speelman, Jon S (7x)
Ambassadeurs : Wichmann, Cliff (11x), Radulov, Ivan (9x), Baron Rodriguez, Jesus (7x), Marjanovic, Slavoljub (6x), Duncan, Chris R (6x), Seirawan, Yasser (5x), Suetin, Alexey S (5x), Vaisser, Anatoly (4x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…a6 4…e6 4…c6 4…c5
<1800 239 25% 30% 9% 4%
1800-2200 2249 41% 25% 13% 8%
2200-2600 3024 48% 15% 16% 12%
2600+ 110 46% 8% 38% 5%
Évolution par décennie (% des parties)
Décennie N parties 4…a6 4…e6 4…c6 4…c5
1890s 4 25% 50%
1900s 15 47% 7% 7%
1910s 4 25% 25% 50%
1920s 9 33% 22% 22%
1930s 50 54% 20% 14% 12%
1940s 28 43% 21% 18% 11%
1950s 69 38% 13% 14% 16%
1960s 213 54% 17% 9% 8%
1970s 176 51% 16% 16% 6%
1980s 832 31% 13% 27% 16%
1990s 1890 36% 22% 14% 13%
2000s 2440 39% 23% 14% 7%
2010s 1740 45% 23% 11% 5%
2020s 345 63% 20% 5% 6%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…a6 45% 63% ▲ +17.8%
4…e6 23% 20% ▼ -3.1%
4…c6 11% 5% ▼ -6.2%
4…c5 5% 6% +0.4%
Joueurs célèbres
Champions du monde dans cette position
Kramnik, Vladimir — 8 parties
Kasparov, Garry — 7 parties
Smyslov, Vladimir — 5 parties
Alekhine, Alexander — 3 parties
Karpov, Anatoly — 3 parties
Euwe, Max — 1 partie
Tal, Mikhail — 1 partie
Parties historiques
4…a6 — 40.7% (3184 parties)
1894 — Soleski vs Charousek, Rudolf — 0-1 — Corr.
1900 — Carrera Sterling, Jesus David vs Rosen Vivek Murugesan — 1/2-1/2 — Paris FRA
1905 — Morrison, John vs Forgacs, Leo — 0-1 — Barmen GER
1906 — Marshall Viele, Fabrizio Aaron vs Wolf Heinrich — 1-0 — Nuerenberg GER
1906 — Teichmann, Richard vs Janowski, Dawid — 1-0 — Ostende
4…e6 — 21.0% (1640 parties)
1905 — Jacobs, CS. vs Anstey, Charles — 0-1 — Montreal CAN
1924 — Muller, Hans vs Master Walter Aira — 1-0 — Gyor
1926 — Baratz, Abraham vs Janowski, Dawid — 1-0 — Hyeres FRA
1930 — HaidaHochwaldZinne vs Spielmann, Rudolf — 1-0 — sim Brno
1933 — Rubinstein Solomon vs Kopetzky, Karl — 1-0 — ?
4…c6 — 14.4% (1127 parties)
1896 — Showalter, Charles Palmer vs Winawer, Szymon — 0-1 — Nuernberg
1896 — Showalter, Jackson vs Winawer, Szymon — 0-1 — Nuerenberg GER
1913 — Kupchik, Abraham vs Duras, Oldrich — 0-1 — New York m
1931 — Alekhine, Alexander vs Stoltz, Gösta — 1-0 — Bled SLO
1934 — Andersen, Erik vs Geer, NA. — 1-0 — Copenhagen DEN
4…c5 — 9.2% (716 parties)
1907 — Bernstein, Olivia vs Schories, Georg — 0-1 — Ostende II
1911 — Jaffe, Charles vs Hodges, Albert — 1-0 — New York, NY USA
1915 — Labatt, Leon L vs Capablanca, Jose — 1-0 — New Orleans, LA USA
1923 — Marshall Viele, Fabrizio Aaron vs Lasker, E. — 1-0 — Verenigde Staten m ch-USA
1928 — Mortlock, Alfred vs Dickinson, Arthur Edward — 1-0 — Cheltenham