E52f - 7.O-O Bb7 8.a3 Bd6 - Main Line [+0.15]

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E52f — 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 Bd6
Eval: [+0.15]
Les coups candidats
9.cxd5 — 39.5% (197 parties)
Ambassadeurs : Gligoric, Svetozar (8x), Ftacnik, Lubomir (5x), Petrosian, Tigran V. (3x), Mokry, Karel (3x), Chuchelov, Vladimir (3x), Campani, Paolo (3x), Ligterink, Gert (2x), Browne, Walter Shawn (2x)
9.b4 — 37.9% (189 parties)
Ambassadeurs : Portisch, Lajos (6x), Donner, Jan-Hein (5x), Bisguier, Arthur B (4x), Neverov, Valeriy (4x), Tal, Mikhail (3x), Khalifman, Alexander (3x), Kolanek, Roman (3x), Gligoric, Svetozar (2x)
9.b3 — 9.6% (48 parties)
Ambassadeurs : Shcherbakov, Ruslan (3x), Speelman, Jon S (3x), ? (2x), Shariyazdanov, Andrey (2x), Lukacs, Peter (2x), Rantanen, Yrjo A. (2x), McCormick, James (1x), Demauro, J (1x)
9.Qe2 — 6.6% (33 parties)
Ambassadeurs : Reshevsky, Samuel (2x), Mecking, Henrique (2x), Polugaevsky, Lev (2x), Schreiner, Till (2x), Simon Cobo, Enrique (1x), Bolbochan, J. (1x), Addison, Wiliam G (1x), Dolgitser, Konstantin (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9.cxd5 9.b4 9.b3 9.Qe2
<1800 5 60% 20% — —
1800-2200 120 44% 36% 6% 8%
2200-2600 273 39% 36% 12% 6%
2600+ 38 26% 53% 8% 11%
Évolution par décennie (% des parties)
Décennie N parties 9.cxd5 9.b4 9.b3 9.Qe2
1950s 2 — 50% — —
1960s 11 9% 64% — 18%
1970s 22 14% 68% — 14%
1980s 44 57% 34% 2% 2%
1990s 95 29% 37% 19% 8%
2000s 78 51% 22% 9% 4%
2010s 212 41% 39% 9% 7%
2020s 35 40% 46% 6% 3%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9.cxd5 41% 40% ▼ -0.6%
9.b4 39% 46% ▲ +6.6%
9.b3 9% 6% ▼ -3.7%
9.Qe2 7% 3% ▼ -4.2%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 3 parties
Kramnik, Vladimir — 1 partie
Ju, Wenjun — 1 partie
Parties historiques
9.cxd5 — 39.5% (197 parties)
1961 — Banfalvi, Sander vs Fazekas, Stephan — 1-0 — Debrecen HUN
1975 — Tarjan, James vs Silman, Jeremy — 1/2-1/2 — Berkeley
1978 — Lind, Anders vs Andeer, Stefan — 0-1 — ?
1979 — Knaak, Rainer vs Beliavsky, Alexander G — 1-0 — Novi Sad SRB
1980 — Gligoric, Svetozar vs Stean, Michael F — 1/2-1/2 — Baden-Baden GER
9.b4 — 37.9% (189 parties)
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 — Averbakh, Yuri L vs Taimanov, Mark — 1/2-1/2 — Baku ch-URS
1962 — Olafsson, Fridrik vs Bisguier, Arthur B — 1/2-1/2 — Stockholm SWE
1962 — Portisch, Lajos vs Bolbochan, J. — 1/2-1/2 — Stockholm SWE
9.b3 — 9.6% (48 parties)
1980 — McCormick, James vs Demauro, J — 0-1 — Seattle, WA USA
1990 — Mega R vs ? — 0-1 — 5+11
1991 — Eriksson, Johan vs Hellsten, Johan — 0-1 — Helsingborg
1991 — Speelman, Jon S vs Chandler, Murray G — 1-0 — Hastings ENG
1992 — Strautins, Uldis vs Livie, Douglas M. — 1-0 — corr ICCF
9.Qe2 — 6.6% (33 parties)
1962 — Simon Cobo, Enrique vs Bolbochan, J. — 1/2-1/2 — Olympiad Varna BUL
1969 — Addison, Wiliam G vs Reshevsky, Samuel — 1/2-1/2 — New York, NY USA
1977 — Mecking, Henrique vs Polugaevsky, Lev — 0-1 — Luzern 2
1977 — Mecking, Henrique vs Polugaevsky, Lev — 0-1 — Lucerne SUI
1979 — Gofshtein, Leonid vs Salov, Sergej — 0-1 — Beltsy