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E03j — Open
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Qa4+ Nbd7 6.Qxc4 a6 7.Nf3 b5 8.Qc6
Eval: [-0.25]
Les coups candidats
8…Rb8 — 79.3% (383 parties)
Ambassadeurs : El Debs, Felipe de Cresce (4x), Grabarczyk, Miroslaw (3x), Szabo, Laszlo (2x), Geller, Efim P. (2x), Kavalek, Lubomir (2x), Ljubojevic, Ljubomir (2x), Boensch, Uwe (2x), Blatny, Pavel (2x)
8…Ra7 — 20.3% (98 parties)
Ambassadeurs : Mirzoev, Azer (3x), Sveshnikov, Evgeny (2x), Kaidanov, Gregory (2x), Halasz, Tamas (2x), Sajtar, Jaroslav (1x), Gligorić, Svetozar (1x), Capablanca, Jose (1x), Reshevsky, Samuel (1x)
8…Bb4+ — 0.2% (1 parties)
Ambassadeurs : Pick, Stepan (1x), Vaculik, Martin (1x)
8…Nd5 — 0.2% (1 parties)
Ambassadeurs : Arushi Kotwal (1x), Zhang, Xiao (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 8…Rb8 8…Ra7 8…Bb4+ 8…Nd5
<1800 5 40% 60%
1800-2200 77 81% 18% 1%
2200-2600 331 79% 21% 0%
2600+ 9 100%
Évolution par décennie (% des parties)
Décennie N parties 8…Rb8 8…Ra7 8…Bb4+ 8…Nd5
1930s 1 100%
1940s 7 86% 14%
1950s 8 88% 12%
1960s 7 71% 29%
1970s 11 64% 36%
1980s 23 78% 22%
1990s 73 85% 15%
2000s 119 86% 13% 1%
2010s 162 78% 21% 1%
2020s 72 68% 32%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
8…Rb8 78% 68% ▼ -10.3%
8…Ra7 21% 32% ▲ +11.0%
8…Bb4+ 0% 0% +0.0%
8…Nd5 1% 0% ▼ -0.6%
Joueurs célèbres
Champions du monde dans cette position
Smyslov, Vladimir — 2 parties
Alekhine, Alexander — 1 partie
Tal, Mikhail — 1 partie
Karpov, Anatoly — 1 partie
Botvinnik, Mikhail — 1 partie
Parties historiques
8…Rb8 — 79.3% (383 parties)
1942 — Alekhine, Alexander vs Junge, Kai — 1-0 — Prague CZE
1943 — Thelen, Bedrich vs Foltys, Jan — 0-1 — Prague CZE
1945 — Reshevsky, Samuel vs Pilnik, Herman — 1-0 — Hollywood
1948 — Lokvenc, Josef vs Watzl, Leopold — 1-0 — Bad Gastein
1948 — Alatortsev, Vladimir N. vs Ragozin, Viacheslav — 1/2-1/2 — Moskou ch-URS
8…Ra7 — 20.3% (98 parties)
1936 — Capablanca, Jose vs Reshevsky, Samuel — 1-0 — Nottingham ENG
1946 — Sajtar, Jaroslav vs Gligorić, Svetozar — 0-1 — Prague CZE
1952 — Vaitonis, Povilas vs Anderson, Frank Ross — 1/2-1/2 — Toronto CAN
1964 — Jakhin, Rashid vs Yudovich, Mikhail M — 1/2-1/2 — Moscow RUS
1969 — Toran Albero, Roman vs Petrosian, Tigran A. — 0-1 — It Palma de Majorca ESP
8…Bb4+ — 0.2% (1 parties)
2000 — Pick, Stepan vs Vaculik, Martin — 1-0 — Czech Republic
8…Nd5 — 0.2% (1 parties)
2019 — Arushi Kotwal vs Zhang, Xiao — 1/2-1/2 — Mumbai IND