B49b - 7…b5 - Taimanov (1965)

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B49b — Taimanov (1965)
1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.Be3 a6 7.Be2 b5
Les coups candidats
Ambassadeurs : Taimanov, Mark (7x), Milov, Leonid (5x), Almarza Mato, Carlos (5x), Hartston, William R (4x), Coleman, Peter L. (4x), Horvath, Adam (4x), Marcussi, Bartolome J (3x), Bjuhr, Arne (3x)
8.O-O — 25.2% (257 parties)
Ambassadeurs : Cramling, Pia (3x), Caruso, Tomas (3x), Singh, Pritam (2x), Needleman, Alejandro (2x), Panchanathan, Magesh Chandran (2x), Kabir, Rezaul (2x), De Ruiter, Danny (2x), Van der Poel, Henk (2x)
8.a3 — 19.5% (199 parties)
Ambassadeurs : Keene, Raymond D (2x), Miana, Elias (1x), Bazan, Osvaldo (1x), Schatzle, Mario (1x), Brond, Victor (1x), Boysan, M (1x), Carr, John (1x), Murphy, Peter W (1x)
8.f4 — 4.5% (46 parties)
Ambassadeurs : Fominyh, Alexander (2x), Littlewood, John E (1x), Penrose, Jonathan (1x), Aygoustinos, Aygousti (1x), Yap, Andronico (1x), Lopez Olmo, Maria Del 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 41 20% 29% 41% 2%
1800-2200 353 38% 29% 24% 5%
2200-2600 424 56% 26% 13% 4%
2600+ 28 86% 7% 4% 4%
Évolution par décennie (% des parties)
Décennie N parties 8.Nxc6 8.O-O 8.a3 8.f4
1960s 53 66% 17% 13% 2%
1970s 40 58% 12% 22% 5%
1980s 40 45% 30% 18% 8%
1990s 154 34% 26% 27% 9%
2000s 242 41% 29% 21% 5%
2010s 404 54% 24% 16% 3%
2020s 85 46% 26% 21% 4%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
8.Nxc6 54% 46% ▼ -7.8%
8.O-O 24% 26% ▲ +1.6%
8.a3 16% 21% ▲ +4.8%
8.f4 3% 4% ▲ +0.6%
Joueurs célèbres
Champions du monde dans cette position
Hou, Yifan — 3 parties
Tal, Mikhail — 1 partie
Parties historiques
8.Nxc6 — 47.5% (484 parties)
1961 — Polugaevsky, Lev vs Gipslis, Aivars — 1-0 — URS ch
1962 — Stein, Leonid vs Taimanov, Mark — 1/2-1/2 — Erevan ch-URS
1962 — Mikenas, Vladas vs Popov, Vladimir L. — 1-0 — Sofia BUL
1962 — Abderrahmane Ely vs Hartston, William R — 1-0 — England
1962 — Mikenas, Vladas vs Taimanov, Mark — 0-1 — Erevan ch-URS
8.O-O — 25.2% (257 parties)
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 Schmedler, Anton — 1-0 — New York, NY USA
1966 — Mesa, Alejandro vs Cebalo, Miso — 0-1 — Orebro SWE
8.a3 — 19.5% (199 parties)
1964 — Murphy, Peter W vs Keene, Raymond D — 0-1 — Whitby
1964 — Almond, Philip vs Keene, Raymond D — 0-1 — Whitby
1964 — Alvarez, Oscar vs Flores Topp, Vicente Augusto — 1-0 — ?
1965 — Pregherman, Shmuel vs Aloni, Itzchak — 0-1 — Israel
1966 — Miana, Elias vs Bazan, Osvaldo — 0-1 — Cordoba ARG
8.f4 — 4.5% (46 parties)
1962 — Littlewood, John E vs Penrose, Jonathan — 1-0 — England
1972 — Fjeldsted, Andres vs Sinclair, Ian — 0-1 — Graz AUT
1977 — Aygoustinos, Aygousti vs Yap, Andronico — 0-1 — Groningen NED
1988 — Lopez Olmo, Maria Del Mar vs Plaskett, H James — 0-1 — Hastings ENG
1988 — Bryszkowski, Pawel vs Swierczynski, Stanislaw — 1/2-1/2 — corr ch29-POL