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A29u — Four Knights
1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nb6 7.O-O Be7
Eval: [+0.16]
Les coups candidats
Ambassadeurs : Zielinski, Sergej (86x), Coyne, David W. (42x), Svoboda, Frantisek (32x), Malinowski, Damian (32x), Almarza Mato, Carlos (31x), Gierth, Karlheinz (29x), Thiel, Kay (28x), Nývlt, Zdenek (25x)
Ambassadeurs : Zielinski, Sergej (61x), Szerlak, Andrzej (56x), Belchev, Branimir Petrov (51x), Morley, Paul (42x), Semmelroth, Heinz-Dieter (31x), Kusnierz, Janusz (25x), Sande, Øystein (20x), Marko, Martin (19x)
Ambassadeurs : Zhak, Boris (14x), Bartsch, Reinhard Andrea (10x), Czebe, Attila (8x), Romanishin, Oleg M (7x), Tiviakov, Sergei (7x), Farias, Sergio Roberto Alves (7x), Abramov, Sergey Pavlovich (6x), Maroroa Jones, Gawain C B (6x)
8.b3 — 4.6% (720 parties)
Ambassadeurs : Cvetkovic, Srdjan (10x), Breahna, Radu (10x), Damljanovic, Branko (6x), Arbakov, Valentin (4x), Tregubov, Pavel V. (4x), Troyke, Christian (4x), Orzechowski, Jacek (3x), Guenther, Torsten (3x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 8.a3 8.d3 8.Rb1 8.b3
<1800 303 40% 48% 1% 5%
1800-2200 5449 45% 43% 5% 5%
2200-2600 7539 48% 37% 9% 5%
2600+ 436 50% 25% 16% 7%
Évolution par décennie (% des parties)
Décennie N parties 8.a3 8.d3 8.Rb1 8.b3
1900s 1 100%
1920s 2 50% 50%
1930s 33 12% 79%
1940s 26 15% 65%
1950s 53 17% 60% 2%
1960s 88 41% 50% 2%
1970s 113 32% 53% 6%
1980s 566 38% 55% 0% 3%
1990s 1813 40% 43% 9% 5%
2000s 3215 40% 44% 8% 5%
2010s 7931 51% 37% 7% 3%
2020s 1841 45% 35% 7% 11%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
8.a3 51% 45% ▼ -5.7%
8.d3 37% 35% ▼ -1.8%
8.Rb1 7% 7% -0.1%
8.b3 3% 11% ▲ +8.3%
Joueurs célèbres
Champions du monde dans cette position
Kramnik, Vladimir — 10 parties
Carlsen, Magnus — 10 parties
Ding, Liren — 8 parties
Kasparov, Garry — 7 parties
Anand, Viswanathan — 4 parties
Ju, Wenjun — 4 parties
Botvinnik, Mikhail — 3 parties
Karpov, Anatoly — 3 parties
Euwe, Max — 2 parties
Tal, Mikhail — 2 parties
Karpov, Aleksandr — 2 parties
Alekhine, Alexander — 1 partie
Smyslov, Vladimir — 1 partie
Hou, Yifan — 1 partie
Gukesh D — 1 partie
Parties historiques
8.a3 — 45.9% (7205 parties)
1907 — Bernstein, Olivia vs Metger, Johannes — 1-0 — Ostende II
1936 — Opocensky, Karel vs Becker, Albert — 1/2-1/2 — Wenen Trebitsch
1937 — Lundin, Erik vs Collett, John — 1-0 — Stockholm SWE
1938 — Zita, Frantisek vs Zinner, Emil — 1-0 — Praag ch CZE
1939 — Baender, Paul vs Kerlin, G. — 1/2-1/2 — Buenos Aires ARG
8.d3 — 39.7% (6230 parties)
1928 — Goud, JH. vs Kroone, Gerard — 1/2-1/2 — NED
1934 — Pitschak, Rudolf vs Flohr, Salo — 0-1 — Bad Liebenwerda
1935 — De Winter Gallegos, Willy vs Koltanowski, George — 1/2-1/2 — White Rock Pavilion
1935 — Solin, Ilmari vs Lilienthal, Andor — 0-1 — Warsaw ol Warsaw POL
1935 — Keres, Paul Petrovich vs Pirc, Vasja — 1/2-1/2 — Warsaw ol Warsaw POL
8.Rb1 — 6.9% (1075 parties)
1989 — Shirazi, Kamran vs Benjamin, Joel — 1-0 — Philadelphia, PA USA
1991 — Adorjan, Andras vs Acevedo Sanchez, Jose Ignacio — 1-0 — Manila PHI
1991 — Sorokin, Maksim vs Savon, Vladimir — 1/2-1/2 — Chelyabinsk RUS
1991 — Adorjan, Andras vs Kallai, Gabor — 1-0 — HUN
1992 — Adorjan, Andras vs Lin, Weiguo — 0-1 — Shenzhen
8.b3 — 4.6% (720 parties)
1928 — Regedzinski, Teodor vs Wertheim, Willem F — 1/2-1/2 — The Hague NED
1959 — Etruk, Rein T vs Heuer, Valter — 0-1 — Tartu
1961 — Udovcic, Mijo vs Florian, Tibor — 1-0 — Oberhausen etc
1966 — Simagin, Vladimir vs Bebchuk, Evgeni — 1-0 — Moscow RUS
1972 — Biamba vs Konarkowska-Sokolov, Henrijeta — 1/2-1/2 — Skopje MKD