E52d - 8.a3 - Main Line (1928)

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E52d — Main Line (1928)
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
Les coups candidats
Ambassadeurs : Gligoric, Svetozar (9x), Portisch, Lajos (8x), Polugaevsky, Lev (6x), Neverov, Valeriy (6x), Donner, Jan-Hein (5x), Ftacnik, Lubomir (5x), Petrosian, Tigran V. (5x), Shariyazdanov, Andrey (5x)
8…Bxc3 — 21.9% (173 parties)
Ambassadeurs : Huebner, Robert (4x), Averbakh, Yuri L (3x), Panno, Oscar (2x), Gligoric, Sofija (2x), Lombardy, William J (1x), Mangini, Jose Henrique de Mello (1x), Borisenko, Georgy K (1x), Alatortsev, Vladimir N. (1x)
8…Be7 — 13.2% (104 parties)
Ambassadeurs : Donner, Jan-Hein (3x), Panno, Oscar (3x), Taimanov, Mark (2x), Eliskases, Erich (2x), Bobotsov, Milko G (2x), Ree, Hans (2x), Miguel, Nahuel (2x), Knaak, Rainer (2x)
8…dxc4 — 1.8% (14 parties)
Ambassadeurs : Emma, Jaime (1x), Soppe, Guillermo (1x), Schuster, Juergen (1x), Ripatti, M. (1x), Inkiov, Ventzislav (1x), Maninang, Rafaelito (1x), Waldhauser, Guenter (1x), Szenczy, Sandor (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 31 42% 35% 23% —
1800-2200 252 56% 26% 16% 2%
2200-2600 349 71% 17% 10% 2%
2600+ 42 93% 7% — —
Évolution par décennie (% des parties)
Décennie N parties 8…Bd6 8…Bxc3 8…Be7 8…dxc4
1950s 22 9% 45% 45% —
1960s 26 42% 31% 27% —
1970s 40 55% 28% 15% 2%
1980s 62 73% 13% 8% 6%
1990s 127 75% 15% 9% 1%
2000s 128 61% 25% 12% 2%
2010s 320 66% 22% 11% 1%
2020s 65 54% 25% 20% 2%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
8…Bd6 66% 54% ▼ -12.1%
8…Bxc3 22% 25% ▲ +3.1%
8…Be7 11% 20% ▲ +8.8%
8…dxc4 1% 2% +0.3%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 3 parties
Kramnik, Vladimir — 1 partie
Ju, Wenjun — 1 partie
Parties historiques
8…Bd6 — 63.2% (499 parties)
1954 — Balcarek, Wiktor vs Sokolsky, Alexey — 1-0 — Cracow
1958 — Zhukhovitsky, Samuel vs Sokolsky, Alexey — 1-0 — Baku AZE
1961 — Banfalvi, Sander vs Fazekas, Stephan — 1-0 — Debrecen HUN
1961 — Perez Perez, Francisco Jose vs Pachman, Ludek — 1/2-1/2 — Oberhausen etc
1961 — Averbakh, Yuri L vs Taimanov, Mark — 1/2-1/2 — Baku ch-URS
8…Bxc3 — 21.9% (173 parties)
1950 — Borisenko, Georgy K vs Alatortsev, Vladimir N. — 0-1 — Moskou ch-URS
1953 — Taimanov, Mark vs Averbakh, Yuri L — 1-0 — Zurich SUI
1954 — Petrosian, Tigran V. vs Ragozin, Viacheslav — 1/2-1/2 — Kiev ch-URS
1954 — Panno, Oscar vs Averbakh, Yuri L — 1/2-1/2 — Buenos Aires ARG
1954 — Panno, Oscar vs Averbakh, Yuri L — 1/2-1/2 — ARG-URS Buenos Aires
8…Be7 — 13.2% (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 — Castillo Larenas, Mariano vs Eliskases, Erich — 0-1 — Mar del Plata ARG
8…dxc4 — 1.8% (14 parties)
1974 — Garcia , Gandy vs Ayasofya Medina — 1-0 — Las Palmas ESP
1982 — Inkiov, Ventzislav vs Maninang, Rafaelito — 1-0 — Luzern olm
1986 — Schuster, Juergen 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