E52d - 7.O-O Bb7 8.a3 - Main Line

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E52d — 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.a3
Eval: [+0.20]
Les coups candidats
Ambassadeurs : Gligoric, Svetozar (11x), Portisch, Lajos (8x), Polugaevsky, Lev (6x), Lukacs, Peter (6x), Neverov, Valeriy (6x), Donner, Jan-Hein (5x), Petrosian, Tigran V. (5x), Ftacnik, Lubomir (5x)
8…Bxc3 — 21.8% (170 parties)
Ambassadeurs : Averbakh, Yuri L (4x), Huebner, Robert (4x), Gligoric, Svetozar (3x), Panno, Oscar (2x), Taimanov, Mark (2x), Padevsky, Nikola (2x), Kashlinskaya, Alina (2x), Giuriato, Sergio (2x)
8…Be7 — 13.3% (104 parties)
Ambassadeurs : Panno, Oscar (3x), Ree, Hans (3x), Donner, Jan-Hein (3x), Taimanov, Mark (2x), Eliskases, Erich (2x), Bobotsov, Milko G (2x), Najdorf, Miguel (2x), Gligorić, Svetozar (2x)
8…dxc4 — 1.7% (13 parties)
Ambassadeurs : Waldhauser, Guenter (1x), Szenczy, Sandor (1x), Schuster, Jan (1x), Ripatti, M. (1x), Garcia Gonzales, Guillermo (1x), Medina-Garcia, Antonio (1x), Inkiov, Ventzislav (1x), Maninang, Rafaelito (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 8…Bd6 8…Bxc3 8…Be7 8…dxc4
<1800 15 33% 47% 20% —
1800-2200 207 57% 26% 15% 1%
2200-2600 377 71% 17% 10% 2%
2600+ 41 93% 7% — —
Évolution par décennie (% des parties)
Décennie N parties 8…Bd6 8…Bxc3 8…Be7 8…dxc4
1920s 1 — 100% — —
1950s 23 9% 48% 43% —
1960s 27 41% 30% 30% —
1970s 40 55% 28% 15% 2%
1980s 61 72% 13% 8% 7%
1990s 126 75% 15% 10% 1%
2000s 128 61% 25% 12% 2%
2010s 317 66% 21% 11% 1%
2020s 58 57% 22% 21% —
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
8…Bd6 66% 57% ▼ -9.3%
8…Bxc3 21% 22% ▲ +1.3%
8…Be7 11% 21% ▲ +9.3%
8…dxc4 1% 0% ▼ -1.3%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 3 parties
Kramnik, Vladimir — 1 partie
Ju, Wenjun — 1 partie
Parties historiques
8…Bd6 — 63.3% (494 parties)
1954 — Balcarek, Wiktor vs Sokolsky, Alexey — 1-0 — Cracow
1958 — Zhukhovitsky, Samuel vs Sokolsky, Alexey — 1-0 — Baku AZE
1961 — Perez Perez, Francisco Jose vs Pachman, Ludek — 1/2-1/2 — Oberhausen etc
1961 — Banfalvi, Sander vs Fazekas, Stephan — 1-0 — Debrecen HUN
1961 — Averbakh, Yuri L vs Taimanov, Mark — 1/2-1/2 — Baku ch-URS
8…Bxc3 — 21.8% (170 parties)
1928 — Yates, Frederic D vs Colle, Edgar — 1-0 — Hastings Town Hall
1950 — Borisenko, Georgy K vs Alatortsev, Vladimir N. — 0-1 — Moskou ch-URS
1953 — Taimanov, Mark vs Averbakh, Yuri L — 1-0 — Zurich SUI
1953 — Taimanov, Mark vs Averbakh, Yuri L — 1-0 — Zurich SUI
1954 — Panno, Oscar vs Averbakh, Yuri L — 1/2-1/2 — ARG-URS Buenos Aires
8…Be7 — 13.3% (104 parties)
1952 — Wozniak, Kazimierz vs Szukszta, Janus — 1-0 — Katowice POL
1953 — Thorban W vs Auer, Guenter — 1-0 — corr GER
1954 — Kasparian, Genrikh vs Sokolsky, Alexey — 0-1 — Erevan ARM
1954 — Panno, Oscar vs Eliskases, Erich — 1/2-1/2 — Mar del Plata ARG
1954 — Panno, Oscar vs De Souza Mendes, Joao — 1-0 — Mar del Plata/Buenos Aires
8…dxc4 — 1.7% (13 parties)
1974 — Garcia Gonzales, Guillermo vs Medina-Garcia, Antonio — 1-0 — Las Palmas ESP
1982 — Inkiov, Ventzislav vs Maninang, Rafaelito — 1-0 — Lucerne SUI
1986 — Schuster, Jan vs Ripatti, M. — 1/2-1/2 — corr Baltic tt
1988 — Emma, Jaime vs Soppe, Guillermo — 0-1 — Buenos Aires ch-ARG
1989 — Waldhauser, Guenter vs Szenczy, Sandor — 1-0 — Austria