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A57h —
1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5
Les coups candidats
Ambassadeurs : ? (86x), Bellon Lopez, Juan Manuel (79x), Bakheet Farag (78x), Lazarev, Vladimir (76x), Plachetka, Jan (75x), Van Riemsdijk, Herman C. (74x), Fedorowicz, John (71x), Van Wely, Loek (58x)
4…e6 — 1.1% (531 parties)
Ambassadeurs : Capece, Adolivio (16x), Felizes, Paulo (13x), Rosta, Sandor (11x), Boidman, Yuri (8x), Werner, Dimo (7x), Thomas Andrew (6x), Hajdu, Lajos (6x), Philipowski, Robert (6x)
4…g6 — 0.3% (148 parties)
Ambassadeurs : Seyffer, Guenther (5x), Bergemann, Martin (4x), Littlewood, John E (2x), Celis, Gustavo (2x), Leeuw, Pablo (2x), Matchett, Harry Gethin Thorp (1x), O'Kelly de Galway, Alberic (1x), Matchett (1x)
4…d6 — 0.2% (107 parties)
Ambassadeurs : Virnik, Elena (4x), Toledo, Rodolfo (3x), Rennert, Ralf (3x), Cook, Philip (3x), Newton, Robert A (3x), Planella Sanchez, Jordi (3x), Stubbe, Wilko (3x), Ravisekhar, Raja (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 2755 98% 1% 0% 0%
1800-2200 20617 98% 1% 0% 0%
2200-2600 18467 99% 1% 0% 0%
2600+ 324 100% — — —
Évolution par décennie (% des parties)
Décennie N parties 4…a6 4…e6 4…g6 4…d6
1950s 42 43% 43% 7% 5%
1960s 89 69% 28% 2% 1%
1970s 1203 98% 1% 0% 0%
1980s 2613 99% 1% 0% 0%
1990s 10906 98% 1% 0% 0%
2000s 13681 98% 1% 0% 0%
2010s 15539 98% 1% 0% 0%
2020s 4213 98% 1% 0% 0%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…a6 98% 98% +0.1%
4…e6 1% 1% +0.0%
4…g6 0% 0% -0.0%
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
Anand, Viswanathan — 3 parties
Tal, Mikhail — 2 parties
Botvinnik, Mikhail — 2 parties
Parties historiques
4…a6 — 98.1% (47389 parties)
1950 — Hasek, Josef vs Sefc, Jan — 1-0 — Zlin ch nahra
1951 — Trifunovic, Petar vs Kozomara, Vlado — 1/2-1/2 — Ljubljana ch YUG
1951 — Puc, Stojan vs Kozomara, Vlado — 1-0 — Ljubljana ch YUG
1955 — Haggai Mawejje Israel vs Aabel Thomas Eapen — 0-1 — Aberystwyth ch-BCF
1955 — Rabar, Braslav vs Milic, Borislav — 1-0 — Zagreb CRO
4…e6 — 1.1% (531 parties)
1954 — Palfi, Jakub vs Schneider, Madeleine — 0-1 — Budapest HUN
1954 — Shaposhnikov, Aleksii vs Bastrikov, Georgy — 0-1 — USSR ch
1954 — Lilienthal, Andor vs Mokatsian, A. — 1-0 — Erevan ARM
1954 — Moiseev, Oleg vs Mokatsian, Akob Arsenovic — 1/2-1/2 — Erevan ARM
1954 — Khalilbeili, Sultan vs Kolobov, Yury — 1-0 — Riga LAT
4…g6 — 0.3% (148 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 — Alcorta, Martinez Leopoldo 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