B91b - 6…b5 - Najdorf (1941)

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B91b — Najdorf (1941)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.g3 b5
Les coups candidats
7.Bg2 — 90.5% (268 parties)
Ambassadeurs : Matanovic, Aleksandar (2x), Kotov, Alexander (2x), Enevoldsen, Jens (2x), Evans, Larry (2x), Czerniak, Moshe (2x), Fernandez, Antonio (2x), Shkuran, Danylo (2x), Trabert, Bettina (2x)
7.a3 — 8.8% (26 parties)
Ambassadeurs : Puiggros, Guillermo (1x), Reinhardt, Enrique (1x), Sanz Montarelo, Teodoro (1x), Carpintero, Javier (1x), Conceicao, Joanita Siri da Costa (1x), Alves, Andre Garcia (1x), Bloom, Patrick R (1x), Walsh, Jonathan R (1x)
7.a4 — 0.7% (2 parties)
Ambassadeurs : Groenroos, Pentti (1x), Bak, Jerzy (1x), Sideris, Theodoros (1x), Tsiros, Fragkiskos Vlasios (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 7.Bg2 7.a3 7.a4
<1800 20 60% 40% —
1800-2200 156 93% 6% 1%
2200-2600 71 100% — —
Évolution par décennie (% des parties)
Décennie N parties 7.Bg2 7.a3 7.a4
1950s 13 92% 8% —
1960s 7 100% — —
1970s 8 100% — —
1980s 14 86% 7% 7%
1990s 37 92% 8% —
2000s 93 94% 6% —
2010s 108 87% 12% 1%
2020s 16 88% 12% —
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
7.Bg2 87% 88% +0.5%
7.a3 12% 12% +0.5%
7.a4 1% 0% ▼ -0.9%
Parties historiques
7.Bg2 — 90.5% (268 parties)
1950 — Czerniak, Moshe vs Kotov, Alexander — 0-1 — Venice ITA
1950 — Fine, Reuben vs Denker, Arnold S — 1-0 — New York Manhattan
1952 — Matanovic, Aleksandar vs Stoltz, Gösta — 1-0 — Belgrade SRB
1952 — Matanovic, Aleksandar vs Abdi, Andreas — 1-0 — Belgrade SRB
1953 — Dubinin, Peter vs Suetin, Alexey S — 1-0 — Soviet Union
7.a3 — 8.8% (26 parties)
1952 — Puiggros, Guillermo vs Reinhardt, Enrique — 1/2-1/2 — Mar del Plata ARG
1988 — Sanz Montarelo, Teodoro vs Carpintero, Javier — 1-0 — Valladolid
1994 — Perdomo Abad, Jose vs Angel Acosta, Juan Carlos — 1/2-1/2 — Las Palmas ESP
1995 — Conceicao, Joanita Siri da Costa vs Alves, Andre Garcia — 0-1 — Evora
1999 — Bloom, Patrick R vs Walsh, Jonathan R — 1-0 — USA
7.a4 — 0.7% (2 parties)
1986 — Groenroos, Pentti vs Bak, Jerzy — 1-0 — corr Baltic tt
2011 — Sideris, Theodoros vs Tsiros, Fragkiskos Vlasios — 1-0 — ?