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A29v — Four Knights
1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nb6 7.O-O Be7 8.a3
Eval: [+0.19]
Les coups candidats
8…O-O — 78.1% (5749 parties)
Ambassadeurs : Zielinski, Sergej (77x), Coyne, David W. (41x), Almarza Mato, Carlos (30x), Svoboda, Frantisek (29x), Malinowski, Damian (29x), Thiel, Kay (27x), Nývlt, Zdenek (25x), Gierth, Karlheinz (24x)
8…Be6 — 10.0% (735 parties)
Ambassadeurs : Romanishin, Oleg M (16x), Zielinski, Sergej (8x), Hector, Jonny (5x), Popov, Vladimir Valentinovich (5x), Hjartarson, Johann (4x), Geenen, Marc (4x), Biro, Sandor (4x), Cvitan, Ognjen (4x)
8…a5 — 8.8% (645 parties)
Ambassadeurs : Marinelli, Tullio (3x), Gagunashvili, Merab (3x), Zueger, Beat (3x), Istratescu, Andrei (3x), Kryger, Oksana (3x), Talla, Vladimir (3x), Vernay, Clovis (3x), Morihama, Nicolau (3x)
8…g5 — 2.2% (164 parties)
Ambassadeurs : Simon, Holger (3x), Gierth, Karlheinz (3x), Pavlicek, Miroslav (3x), Haug, Ulrich (3x), Mack, Thomas, Dr. (3x), Cvetkovic, Srdjan (2x), Fricot, Frederic (2x), Boger, Raymond (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 8…O-O 8…Be6 8…a5 8…g5
<1800 129 76% 11% 10% 2%
1800-2200 2501 77% 11% 9% 2%
2200-2600 3658 80% 9% 8% 2%
2600+ 218 82% 11% 5% 2%
Évolution par décennie (% des parties)
Décennie N parties 8…O-O 8…Be6 8…a5 8…g5
1900s 1 100%
1930s 4 50% 50%
1940s 4 50% 50%
1950s 9 44% 22% 22%
1960s 36 22% 14% 50%
1970s 37 27% 22% 35%
1980s 218 59% 20% 18% 0%
1990s 751 73% 15% 9% 1%
2000s 1311 77% 10% 7% 4%
2010s 4116 81% 9% 7% 2%
2020s 871 81% 7% 11% 1%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
8…O-O 81% 81% +0.2%
8…Be6 9% 7% ▼ -2.3%
8…a5 7% 11% ▲ +3.6%
8…g5 2% 1% ▼ -1.3%
Joueurs célèbres
Champions du monde dans cette position
Kramnik, Vladimir — 9 parties
Carlsen, Magnus — 9 parties
Kasparov, Garry — 5 parties
Ding, Liren — 5 parties
Botvinnik, Mikhail — 3 parties
Karpov, Anatoly — 3 parties
Ju, Wenjun — 3 parties
Tal, Mikhail — 1 partie
Smyslov, Vladimir — 1 partie
Karpov, Aleksandr — 1 partie
Hou, Yifan — 1 partie
Anand, Viswanathan — 1 partie
Parties historiques
8…O-O — 78.1% (5749 parties)
1936 — Opocensky, Karel vs Becker, Albert — 1/2-1/2 — Wenen Trebitsch
1937 — Lundin, Erik vs Collett, John — 1-0 — Stockholm SWE
1945 — Keres Paul Petrovich vs Lilienthal, Andor — 1-0 — Tallinn EST
1946 — Bakonyi, Elek vs Füster, Géza — 1-0 — Budapest HUN
1956 — Botvinnik, Mikhail vs Benkner, Otto — 1-0 — Moscow RUS
8…Be6 — 10.0% (735 parties)
1907 — Bernstein, Olivia vs Metger, Johannes — 1-0 — Ostende II
1957 — Benko, Pal vs Bely, Miklos — 1/2-1/2 — HUN-ch Budapest HUN
1959 — Ragozin, Viacheslav vs Balogh Moran, Andres — 1-0 — cr.
1962 — Botvinnik, Mikhail vs Lundin, Erik — 1-0 — Stockholm SWE
1964 — Andersen, Borge vs Jakobsen, Ole — 1-0 — Copenhagen DEN
8…a5 — 8.8% (645 parties)
1938 — Zita, Frantisek vs Zinner, Emil — 1-0 — Praag ch CZE
1939 — Baender, Paul vs Kerlin, G. — 1/2-1/2 — Buenos Aires ARG
1944 — Kovar, Filip vs Kucera, Jan — 0-1 — Brno CZE
1949 — Filip, Miroslav vs Kopetzky, Karl — 1-0 — AUT-CSR Vienna AUT
1955 — Taimanov, Mark vs Kan, Ilya A — 1-0 — Leningrad RUS
8…g5 — 2.2% (164 parties)
1989 — Jakobsen, Ole vs Fries-Nielsen, Niels Jorgen — 0-1 — Aalborg DEN
1995 — Berend, Fred vs Quadrio, Alexandre — 1/2-1/2 — Linares ESP
1996 — Sonnhalter, Walter vs Vetter, Gerhard — 1/2-1/2 — ?
1997 — Johansen, Darryl K vs Manca, Federico — 1-0 — Bolzano op Bolzano ITA
1998 — Cvetkovic, Srdjan vs Gurevich, Mikhail — 0-1 — Korinthos GRE