E52h - 7.O-O Bb7 8.cxd5 exd5 9.a3 - Main Line [+0.21]

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E52h — Main Line
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 b6 7.O-O Bb7 8.cxd5 exd5 9.a3
Eval: [+0.21]
Les coups candidats
Ambassadeurs : Tudor, Vasile (8x), Lesiege, Alexandre (7x), Navara, David (6x), Chatalbashev, Boris (6x), Jussupow, Artur (5x), Mauro, Lucio (5x), Neiksans, Arturs (5x), Muir, Andrew J (5x)
9…Be7 — 4.5% (37 parties)
Ambassadeurs : Bogoljubow, Efim (1x), Euwe, Max (1x), Koblencs, Alexander (1x), Neibults, Martins (1x), Vacek, Antonin (1x), Kalendovsky, Jan (1x), Niephaus, Walter (1x), Sahlmann, Walter (1x)
9…Bxc3 — 4.2% (34 parties)
Ambassadeurs : Horowitz, Albert Israel (2x), Buckley, Graeme N (2x), Albert-Kevitz, Alexan (1x), Kevitz, Alexander (1x), Petrosian, Tigran A. (1x), Filip, Marius Liviu (1x), Jedlicka, Ales (1x), Ergh (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9…Bd6 9…Be7 9…Bxc3
<1800 8 88% 12% —
1800-2200 157 89% 4% 6%
2200-2600 499 94% 4% 3%
2600+ 60 100% — —
Évolution par décennie (% des parties)
Décennie N parties 9…Bd6 9…Be7 9…Bxc3
1920s 1 — 100% —
1930s 3 33% — 67%
1950s 14 43% 29% 29%
1960s 8 62% 25% 12%
1970s 6 100% — —
1980s 36 86% 11% 3%
1990s 84 89% 4% 7%
2000s 152 89% 6% 5%
2010s 437 95% 2% 3%
2020s 78 91% 8% 1%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9…Bd6 95% 91% ▼ -4.4%
9…Be7 2% 8% ▲ +5.9%
9…Bxc3 3% 1% ▼ -1.5%
Joueurs célèbres
Champions du monde dans cette position
Euwe, Max — 2 parties
Botvinnik, Mikhail — 1 partie
Parties historiques
9…Bd6 — 91.3% (748 parties)
1932 — Alatortsev, Vladimir N. vs Botvinnik, Mikhail — 0-1 — Leningrad training
1953 — Averbakh, Yuri L vs Ragozin, Viacheslav — 0-1 — Gagra
1953 — Taimanov, Mark vs Averbakh, Yuri L — 1-0 — Garga
1955 — Udovcic, Mijo vs O'Kelly, Albéric de Galway — 1-0 — Zagreb CRO
1956 — Moore, Brian J vs Barden, Leonard — 1/2-1/2 — Blackpool ENG
9…Be7 — 4.5% (37 parties)
1928 — Bogoljubow, Efim vs Euwe, Max — 1-0 — The Netherlands
1950 — Niephaus, Walter vs Sahlmann, Walter — 1/2-1/2 — Bad Pyrmont GER
1954 — Geller, Efim P. vs Lisitsin, Georgy — 1/2-1/2 — Kiev ch-URS
1956 — Koblencs, Alexander vs Neibults, Martins — 1-0 — Riga LAT
1958 — Petrosian, Tigran A. vs Pietzsch, Wolfgang — 1-0 — Munchen olm
9…Bxc3 — 4.2% (34 parties)
1931 — Horowitz, Albert Israel vs Albert-Kevitz, Alexan — 1-0 — New York, NY USA
1931 — Horowitz, Albert Israel vs Kevitz, Alexander — 1-0 — New York, NY USA
1955 — Petrosian, Tigran A. vs Filip, Marius Liviu — 1/2-1/2 — Goteborg SWE
1955 — Udovcic, Mijo vs Matanovic, Aleksandar — 0-1 — Zagreb CRO
1956 — Smith, Phillip D vs Meyer, Milton O — 1-0 — No. California