D93d - 7.Qb3 - Gruenfeld (1912)

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D93d — Gruenfeld (1912)
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Bf4 O-O 6.e3 c6 7.Qb3
Les coups candidats
7…Qa5 — 37.2% (296 parties)
Ambassadeurs : Uhlmann, Wolfgang (8x), Inkiov, Ventzislav (7x), Filip, Miroslav (5x), Malich, Burkhard, Dr. (5x), Ghinda, Mihail-Viorel (4x), Beliavsky, Alexander G (4x), Ftacnik, Lubomir (4x), Navarovszky, Laszlo (3x)
7…e6 — 21.0% (167 parties)
Ambassadeurs : Dunkelblum, Arthur (2x), Geller, Efim P. (2x), Petrosian, Tigran V. (1x), Bivshev, Vasily (1x), Oestreich, Reinhard (1x), Haensch, Reinhard (1x), Fazekas, Stephan (1x), Payne, Roland (1x)
7…dxc4 — 18.2% (145 parties)
Ambassadeurs : Lilly, Richard (2x), Florian, Tibor (2x), Nordstrom, Felix (2x), ? (1x), Bannik, Anatolij (1x), Badamgarav, G. (1x), Liem Hong Gie (1x), Kirby, Kenneth (1x)
7…b6 — 8.5% (68 parties)
Ambassadeurs : Minev, Nikolay N (1x), Hodja, Bujan (1x), Lombardy, William J (1x), Munoz Parraguez, Cesar (1x), M.Roma (1x), Super Constellation (1x), Franck, Philipp (1x), Hirche, Michael (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 7…Qa5 7…e6 7…dxc4 7…b6
<1800 42 19% 38% 14% 19%
1800-2200 325 27% 25% 19% 11%
2200-2600 215 41% 16% 19% 5%
2600+ 1 100% — — —
Évolution par décennie (% des parties)
Décennie N parties 7…Qa5 7…e6 7…dxc4 7…b6
1950s 57 49% 18% 19% 4%
1960s 61 67% 11% 18% —
1970s 61 74% 3% 18% —
1980s 45 56% 20% 16% 2%
1990s 136 29% 24% 18% 12%
2000s 207 27% 29% 20% 12%
2010s 199 29% 19% 18% 10%
2020s 30 10% 33% 17% 17%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
7…Qa5 29% 10% ▼ -19.1%
7…e6 19% 33% ▲ +14.7%
7…dxc4 18% 17% ▼ -0.9%
7…b6 10% 17% ▲ +6.6%
Parties historiques
7…Qa5 — 37.2% (296 parties)
1951 — Barden, Leonard vs Klein, Ernst — 1-0 — Swansea WLS
1952 — Fletzer, Gino vs Castaldi, Vincenzo — 0-1 — Ferrara
1953 — Rabar, Braslav vs Milic, Borislav — 1-0 — Opatija
1953 — Gereben, Erno vs Navarovszky, Laszlo — 0-1 — Budapest ch-HUN
1954 — Fairhurst, William vs Pachman, Ludek — 0-1 — Hastings ENG
7…e6 — 21.0% (167 parties)
1951 — Aadhitha Karikalan vs Nedeljkovic, Srecko M — 1/2-1/2 — Ljubljana
1951 — Sliwa, Bogdan vs Ciejka, Tadeusz — 1-0 — Sopot
1952 — Haley, Phil vs Zalys, Ignas — 0-1 — Montreal CAN
1953 — Krause, Kurt vs Koch, Berthold — 1/2-1/2 — Jena ch DDR
1953 — Lehmann, Heinz vs Pfeiffer, Gerhard — 0-1 — Berlin West
7…dxc4 — 18.2% (145 parties)
1950 — Eken, Max vs Cortlever, Nico — 1/2-1/2 — It Beverwijk NED
1950 — Helle, Soini vs Kramer, George — 1/2-1/2 — Dubrovnik olm
1950 — Florian, Tibor vs Anay Barche — 1-0 — Budapest HUN
1951 — Kieninger, Georg vs Heinicke, Herbert — 1/2-1/2 — Augsburg GER
1951 — Füster, Géza vs Szabadi, Elemer — 1-0 — Hungary ch
7…b6 — 8.5% (68 parties)
1954 — Minev, Nikolay N vs Hodja, Bujan — 1-0 — Prague CZE
1957 — Lombardy, William J vs Munoz Parraguez, Cesar — 1/2-1/2 — Reykjavik ISL
1988 — M.Roma vs Super Constellation — 1-0 — Dator mOete
1990 — Seres, Lajos vs Cheymol, Eric — 1-0 — Eger
1990 — Del Gobbo, Michel vs Vedrunes, Jean — 1-0 — cr.