A57h —
1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5
Les coups candidats
Ambassadeurs : Van Riemsdijk, Herman C. (78x), Farago, Ivan (78x), Bellon Lopez, Juan Manuel (75x), Lazarev, Vladimir (74x), Fedorowicz, John (69x), Milanovic, Danilo (59x), Alburt, Lev (56x), Pogonina, Natalija (44x)
4…e6 — 1.1% (523 parties)
Ambassadeurs : Capece, Adolivio (15x), Felizes, Paulo (13x), Rosta, Sandor (11x), Boidman, Yuri (8x), Thomas Andrew (7x), Werner, Dimo (7x), Philipowski, Robert (6x), Contedini, Ennio (5x)
4…g6 — 0.3% (142 parties)
Ambassadeurs : Seyffer, Guenther (5x), Bergemann, Martin (4x), Littlewood, John E (2x), Baikov, Vladimir A (2x), Celis, Gustavo (2x), Leeuw, Pablo (2x), Matchett, Harry Gethin Thorp (1x), O'Kelly de Galway, Alberic (1x)
4…d6 — 0.2% (107 parties)
Ambassadeurs : Virnik, Elena (4x), Rennert, Ralf (4x), Cook, Philip (3x), Newton, Robert A (3x), Planella Sanchez, Jordi (3x), Stubbe, Wilko (3x), Ravisekhar, Raja (2x), Toledo, Rodolfo (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…a6 4…e6 4…g6 4…d6
<1800 1382 98% 1% 0% 1%
1800-2200 17373 98% 1% 0% 0%
2200-2600 19658 99% 1% 0% 0%
2600+ 373 100%
Évolution par décennie (% des parties)
Décennie N parties 4…a6 4…e6 4…g6 4…d6
1930s 2 50%
1940s 4 75% 25%
1950s 43 42% 44% 7% 5%
1960s 89 69% 28% 2% 1%
1970s 1201 98% 1% 0% 0%
1980s 2608 99% 1% 0% 0%
1990s 10871 98% 1% 0% 0%
2000s 13645 98% 1% 0% 0%
2010s 15421 98% 1% 0% 0%
2020s 3388 99% 1% 0% 0%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…a6 98% 99% +0.3%
4…e6 1% 1% -0.1%
4…g6 0% 0% -0.1%
4…d6 0% 0% -0.2%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Anatoly — 10 parties
Kasparov, Garry — 10 parties
Carlsen, Magnus — 10 parties
Kramnik, Vladimir — 9 parties
Ju, Wenjun — 9 parties
Karpov, Aleksandr — 5 parties
Euwe, Max — 3 parties
Anand, Viswanathan — 3 parties
Tal, Mikhail — 2 parties
Botvinnik, Mikhail — 2 parties
Alekhine, Alexander — 1 partie
Parties historiques
4…a6 — 98.1% (46391 parties)
1948 — Bozic, Aleksandar vs Udovcic, Mijo — 0-1 — Belgrade SRB
1949 — Moller, Thomas Knakkergaard vs Korning, Peter — 1/2-1/2 — ?
1949 — Golombek, Harry vs Sefc, Jan — 0-1 — Trencianske Teplice SVK
1950 — Hasek, Josef vs Sefc, Jan — 1-0 — Zlin ch nahra
1951 — Trifunovic, Petar vs Kozomara, Vlado — 1/2-1/2 — Ljubljana ch YUG
4…e6 — 1.1% (523 parties)
1936 — Thorvaldsson, Einar vs Vaitonis, Povilas — 0-1 — Munich GER
1945 — Alatortsev, Vladimir N. vs Ratner, Boris — 1-0 — Moskou ch-URS
1954 — Palfi, Jakub vs Sanchez Schneider, Manuel — 0-1 — Budapest HUN
1954 — Shaposhnikov, Aleksii vs Bastrikov, Georgy — 0-1 — Rostov on Don
1954 — Lilienthal, Andor vs Mokatsian, A. — 1-0 — ch URS (1/2 final) Yerevan AR
4…g6 — 0.3% (142 parties)
1956 — Matchett, Harry Gethin Thorp vs O'Kelly de Galway, Alberic — 0-1 — Bognor Regis
1956 — Matchett vs O Kelly de Galway Alberic — 0-1 — ?
1956 — O'Sullivan, Donal vs O'Kelly, Albéric de Galway — 0-1 — Dublin IRL
1960 — Barden, Leonard vs Littlewood, John E — 1/2-1/2 — Hastings ENG
1967 — Diez del Corral, Jesus vs Willaert, Robert — 1/2-1/2 — Barcelona ESP
4…d6 — 0.2% (107 parties)
1954 — Kluger, Gyula vs Lundin, Erik — 1-0 — Amsterdam NED
1958 — Pedersen, Eigil vs Haahr, Thorkild — 1-0 — Herning
1967 — Martens, Rolf vs Gaprindashvili, Nona — 1/2-1/2 — Goteborg SWE
1972 — Nobrega, Adaucto Wanderley vs Camara, Helder — 1-0 — Blumenau
1974 — Werner Erwin vs Bilo, Heinz — 0-1 — Brackwede