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B49b —
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.Be3 a6 7.Be2 b5
Eval: [+0.23]
Les coups candidats
Ambassadeurs : Taimanov, Mark (6x), Hartston, William R (5x), Coleman, Peter L. (5x), Milov, Leonid (5x), Almarza Mato, Carlos (5x), Schroeder, Ja (5x), Jansa, Vlastimil (4x), Horvath, Adam (4x)
8.O-O — 25.3% (254 parties)
Ambassadeurs : Cramling, Pia (3x), Caruso, Tomas (3x), Gershman, J. (2x), Singh, Pritam (2x), Panchanathan, Magesh Chandran (2x), Djingarova, Emilia (2x), Shadrina, Tatiana (2x), Kabir, Rezaul (2x)
8.a3 — 19.4% (195 parties)
Ambassadeurs : Himanshu, Kumar (3x), Libersan, Thierry (3x), Keene, Raymond D (2x), Nocke, Thomas (2x), Baur, Volker, Dr. (2x), Navarro Molina, David (2x), Gerardi, Saverio (2x), Kuckling, Hannah (2x)
8.f4 — 4.6% (46 parties)
Ambassadeurs : Fominyh, Alexander (2x), Littlewood, John E (1x), Penrose, Jonathan (1x), Fjeldsted, Andres (1x), Sinclair, Ian (1x), Gonzalez Lopez de Luzuriaga, Mar (1x), Plaskett, H James (1x), Tseshkovsky, Vitaly (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 8.Nxc6 8.O-O 8.a3 8.f4
<1800 19 21% 26% 37%
1800-2200 295 35% 30% 27% 5%
2200-2600 456 56% 26% 12% 5%
2600+ 31 87% 6% 3% 3%
Évolution par décennie (% des parties)
Décennie N parties 8.Nxc6 8.O-O 8.a3 8.f4
1920s 1 100%
1960s 53 66% 17% 13% 2%
1970s 40 58% 12% 22% 5%
1980s 40 45% 30% 18% 8%
1990s 153 34% 25% 27% 9%
2000s 242 41% 29% 21% 5%
2010s 403 54% 24% 16% 3%
2020s 73 48% 26% 19% 4%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
8.Nxc6 54% 48% ▼ -5.9%
8.O-O 24% 26% ▲ +1.7%
8.a3 16% 19% ▲ +2.8%
8.f4 3% 4% ▲ +1.1%
Joueurs célèbres
Champions du monde dans cette position
Hou, Yifan — 3 parties
Tal, Mikhail — 1 partie
Parties historiques
8.Nxc6 — 47.8% (480 parties)
1961 — Polugaevsky, Lev vs Gipslis, Aivars — 1-0 — URS ch
1962 — Mikenas, Vladas vs Popov, Lazar — 1-0 — Sofia BUL
1962 — Eley, Brian vs Hartston, William R — 1-0 — England
1962 — Krogius, Nikolai V vs Taimanov, Mark — 0-1 — Erevan ch-URS
1962 — Mikenas, Vladas vs Taimanov, Mark — 0-1 — Erevan ch-URS
8.O-O — 25.3% (254 parties)
1924 — Master Walter Aira vs Havasi, Kornel — 1-0 — Gyor
1963 — Gershman, J. vs Dubinin, Peter — 1-0 — Buenos Aires ARG
1963 — Gershman, J. vs Dubin, Jorge — 1-0 — Buenos Aires ARG
1964 — Talsimul, Mikhail vs Hartston, William R — 1/2-1/2 — London ENG
1964 — Reithel vs Smedley — 1-0 — New York, NY USA
8.a3 — 19.4% (195 parties)
1964 — Almond, Philip vs Keene, Raymond D — 0-1 — Whitby
1964 — Alvarez, Diaz Oscar E vs Flores Topp, Vicente Augusto — 1-0 — ?
1964 — Murphy, Peter W vs Keene, Raymond D — 0-1 — Whitby
1965 — Pregherman, Shmuel vs Aloni, Itzchak — 0-1 — Israel
1966 — Miana, Elias vs Bazan, Osvaldo — 0-1 — Cordoba ARG
8.f4 — 4.6% (46 parties)
1962 — Littlewood, John E vs Penrose, Jonathan — 1-0 — England
1972 — Fjeldsted, Andres vs Sinclair, Ian — 0-1 — Graz AUT
1977 — Aygousti, A vs Yap, Andronico — 0-1 — Groningen NED
1988 — Gonzalez Lopez de Luzuriaga, Mar vs Plaskett, H James — 0-1 — Hastings ENG
1988 — Bryszkowski, P. vs Swierczynski, Stanislaw — 1/2-1/2 — corr ch29-POL