E53d - 7.O-O b6 - Main Line Keres Variation

E53d — Main Line Keres Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O b6
Les coups candidats
8.cxd5 — 74.3% (573 parties)
Ambassadeurs : Gligoric, Svetozar (10x), Kolanek, Roman (8x), Mroczek, Jacek (7x), Keres, Paul (5x), Owens, Johnny (5x), Hatsek, Werner (5x), Zaas, Joel (5x), Szabo, Laszlo (4x)
8.a3 — 12.2% (94 parties)
Ambassadeurs : Nickoloff, Bryon (3x), Pietzsch, Wolfgang (2x), Sanguineti, Raúl Carlos (2x), Reshevsky, Samuel (2x), Lindh, B. (2x), Zsinka, Laszlo (2x), Garcia Vicente, Nieves (2x), Nathans, PJ. (1x)
8.dxc5 — 5.4% (42 parties)
Ambassadeurs : Kruse, Herbert (3x), Popov, Vladimir Valentinovich (2x), Potrata, Janko (2x), Astrologo, Xavier John David (1x), Ardoino, Roberto (1x), Petrosian, Tigran A. (1x), Keres, Paul (1x), Bocharov, Dmitry (1x)
8.Qe2 — 4.7% (36 parties)
Ambassadeurs : Karl, Hans (2x), Lombardy, William J (1x), Keres, Paul (1x), Cakir Jirair (1x), Tempelhoff Wilmar (1x), Kummer, Gerhard (1x), Herzel, Alois, Dr. (1x), Engels, Ludwig (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 8.cxd5 8.a3 8.dxc5 8.Qe2
<1800 24 71% 4% 12% 8%
1800-2200 215 81% 7% 5% 6%
2200-2600 345 74% 12% 6% 4%
2600+ 16 62% 19% 19% —
Évolution par décennie (% des parties)
Décennie N parties 8.cxd5 8.a3 8.dxc5 8.Qe2
1930s 1 100% — — —
1950s 30 80% 7% 3% 7%
1960s 47 49% 36% 2% 6%
1970s 54 76% 17% — 6%
1980s 39 77% 21% — —
1990s 53 66% 26% — 4%
2000s 59 63% 15% 8% 5%
2010s 393 78% 8% 7% 5%
2020s 95 79% 5% 9% 5%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
8.cxd5 78% 79% ▲ +0.8%
8.a3 8% 5% ▼ -2.4%
8.dxc5 7% 9% ▲ +2.9%
8.Qe2 5% 5% ▲ +0.7%
Joueurs célèbres
Champions du monde dans cette position
Smyslov, Vladimir — 1 partie
Hou, Yifan — 1 partie
Ju, Wenjun — 1 partie
Parties historiques
8.cxd5 — 74.3% (573 parties)
1938 — Landau, Salo vs Pirc, Vasja — 0-1 — Hastings ENG
1951 — Bronstein, David I vs Novotelnov, Nikolai — 1-0 — Moskou ch-URS
1951 — Boleslavsky, Isaac vs Ilivitsky, Georgy A — 1-0 — Sverdlovsk
1954 — Witkowski, Stefan vs Sliwa, Bogdan — 0-1 — Lodz ch POL
1954 — Lipnitsky, Isaac vs Sidorov, Anatoly — 1-0 — Riga LAT
8.a3 — 12.2% (94 parties)
1955 — Litmanowicz, Wladyslaw vs Gromek, Jozef — 0-1 — Wroclaw POL
1956 — Rantanen, Matti vs Larsen, Bent — 1-0 — Hangoe
1960 — Lawrie, N. vs Neumann, Adam — 0-1 — corr England-BRD
1960 — Fogelberg Lindberg, Lydia vs Tiemann, Christoph — 1-0 — EU corr
1960 — Filip, Miroslav vs Keres, Paul Petrovich — 1/2-1/2 — Leipzig olm fin-A
8.dxc5 — 5.4% (42 parties)
1952 — Petrosian, Tigran A. vs Keres, Paul — 1-0 — Budapest HUN
1960 — Astrologo, Xavier John David vs Ardoino, Roberto — 1/2-1/2 — cr.
2005 — Grifoll Miró, Joan vs Alexandre Bisquert, Francisco — 1/2-1/2 — ICCF
2005 — Eris, Cem vs MacGregor, Colin A — 1-0 — ICCF
2007 — Eilmes, Don P vs David Androson V — 1/2-1/2 — ICCF
8.Qe2 — 4.7% (36 parties)
1953 — Geller, Efim P. vs Szabo, Laszlo — 1/2-1/2 — Zurich SUI
1957 — Engels, Ludwig vs Sanguineti, Raúl Carlos — 1/2-1/2 — Rio de Janeiro BRA
1961 — Lombardy, William J vs Keres, Paul — 1/2-1/2 — Zurich SUI
1964 — Kummer, Gerhard vs Herzel, Alois, Dr. — 1/2-1/2 — ?
1969 — Cakir Jirair vs Tempelhoff Wilmar — 0-1 — WT/M/16 ICCF corr