A68d - 9…b5 - Four Pawns (1961)

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A68d — Four Pawns (1961)
1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f4 Bg7 8.Nf3 O-O 9.Be2 b5
Les coups candidats
Ambassadeurs : Segal, Alexandru Sorin (9x), Menyhart, Tibor (6x), Sosonko, Gennadi (5x), Stluka, Frantisek (5x), De Villiers, Charles (4x), Kahn, Evarth Dr. (4x), Ouellet, Maili-Jade (4x), Niemela, Ilmari Aarne (3x)
10.Bxb5 — 11.3% (77 parties)
Ambassadeurs : Zaitsev, Alexander (4x), Malich, Burkhard, Dr. (2x), Garces, Napoleon (2x), Loos, Stephan (2x), Wood, Baruch (1x), Saverymuttu, Seth (1x), Savon, Vladimir (1x), Octaviano, Patrick Matheus (1x)
10.Qc2 — 0.6% (4 parties)
Ambassadeurs : Volgyi, Robert (1x), Nadasi, Balazs (1x), Trandafir, Stefan (1x), Aguirre Manzo, Leopoldo Antonio (1x), Garcia Martinez, Jose Luis (1x), Ana Alejandra, Vargas Castillo (1x), Stan, Daniel-Stefan (1x), Ardelean, George-Catalin (1x)
10.O-O — 0.4% (3 parties)
Ambassadeurs : Garay Munoz, Mario Gerardo (1x), Velasquez, Manuel A (1x), Abaho Allan Smith (1x), Saunders, John C. (1x), Delerme, Raymond (1x), Jordan, John (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 10.e5 10.Bxb5 10.Qc2 10.O-O
<1800 23 87% 13% — —
1800-2200 293 84% 14% 1% 0%
2200-2600 241 90% 8% 0% —
Évolution par décennie (% des parties)
Décennie N parties 10.e5 10.Bxb5 10.Qc2 10.O-O
1950s 2 100% — — —
1960s 51 80% 20% — —
1970s 51 92% 8% — —
1980s 69 91% 7% — 1%
1990s 185 90% 8% — 1%
2000s 165 84% 13% 2% —
2010s 116 81% 16% — —
2020s 42 90% 10% — —
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
10.e5 81% 90% ▲ +9.4%
10.Bxb5 16% 10% ▼ -6.9%
10.Qc2 0% 0% +0.0%
10.O-O 0% 0% +0.0%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 1 partie
Parties historiques
10.e5 — 86.8% (591 parties)
1957 — Bosch van Rosenthal, Edzard vs Durao, Joaquim — 1-0 — Dublin zt
1959 — Fraidakis, Pantelis vs Bobotsov, Milko G — 0-1 — BUL-ch Sofia BUL
1960 — Niemela, Ilmari Aarne vs Guthi, I. — 1-0 — Leipzig GER
1960 — Niemela, Ilmari Aarne vs Guthi, I. — 1-0 — Leipzig olm
1960 — Balcerowski, Witold vs Doda, Zbigniew — 0-1 — Poland ch
10.Bxb5 — 11.3% (77 parties)
1961 — Octaviano, Patrick Matheus vs Radovici, Corvin — 1/2-1/2 — Romania
1962 — Zaitsev, Alexander vs Savon, Vladimir — 1/2-1/2 — Erevan ch-URS
1962 — Zaitsev, Alexander vs Khodos, German — 1-0 — Erevan ch-URS
1962 — Zaitsev, Alexander vs Simovich, O. — 1/2-1/2 — Soviet Union
1964 — Malich, Burkhard, Dr. vs Garces, Napoleon — 1/2-1/2 — Tel Aviv olm
10.Qc2 — 0.6% (4 parties)
2000 — Volgyi, Robert vs Nadasi, Balazs — 0-1 — HUN
2005 — Stan, Daniel-Stefan vs Ardelean, George-Catalin — 0-1 — Tusnad ROM
2007 — Trandafir, Stefan vs Aguirre Manzo, Leopoldo Antonio — 0-1 — Aquascalientes
2009 — Garcia Martinez, Jose Luis vs Ana Alejandra, Vargas Castillo — 0-1 — Madrid ESP
10.O-O — 0.4% (3 parties)
1980 — Garay Munoz, Mario Gerardo vs Velasquez, Manuel A — 0-1 — Mexico City MEX
1991 — Delerme, Raymond vs Jordan, John — 1/2-1/2 — Val Thorens FRA
1996 — Abaho Allan Smith vs Saunders, John C. — 0-1 — Mitcham Handicap Bli