D81b - 4…dxc4 5.Qxc4 - Gruenfeld: Early Russian Variation (1940)

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D81b — Gruenfeld: Early Russian Variation (1940)
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Qb3 dxc4 5.Qxc4
Les coups candidats
Ambassadeurs : Ferre Pérez, Alberto (15x), Babula, Vlastimil (11x), Sadzikowski, Daniel (9x), De la Calle, Israel (8x), Aleksandrov, Viktor A. (8x), Yakovich, Yuri (7x), Miton, Kamil (7x), Semcesen, Daniel (6x)
Ambassadeurs : Littlewood, John E (3x), Meier, Georg (3x), Dambacher, Martijn (3x), Killer, Oliver (3x), Avotins, Maigonis (3x), Littlewood, Norman (2x), Bielicki, Carlos (2x), Hempson, Peter W (2x)
5…a6 — 2.9% (41 parties)
Ambassadeurs : Blaznik, Vojko (1x), Dietze, Frank (1x), Kummer, Helmut (1x), Kleiser, Gregor (1x), Kane, Pascal Mouhamed Pagniez (1x), Roberts, Kaden (1x), Barbero, Gerardo F (1x), Zollbrecht, Josef (1x)
5…c6 — 2.1% (30 parties)
Ambassadeurs : Ederer, Karel (2x), Kramer, George (1x), Phillips, Hannah (1x), Reiss, Georg (1x), Schriebl, Alexander (1x), Turunen, Pekka (1x), Karttunen, Mika (1x), Koprek, Juergen (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 5…Bg7 5…Be6 5…a6 5…c6
<1800 63 68% 19% 5% 3%
1800-2200 559 74% 14% 4% 3%
2200-2600 552 79% 16% 2% 2%
2600+ 66 83% 17% — —
Évolution par décennie (% des parties)
Décennie N parties 5…Bg7 5…Be6 5…a6 5…c6
1950s 17 76% 18% — 6%
1960s 37 84% 16% — —
1970s 23 70% 30% — —
1980s 22 64% 32% 5% —
1990s 125 70% 22% 4% 2%
2000s 332 78% 12% 4% 3%
2010s 697 81% 12% 2% 2%
2020s 162 54% 33% 6% 1%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
5…Bg7 81% 54% ▼ -27.8%
5…Be6 12% 33% ▲ +20.2%
5…a6 2% 6% ▲ +4.3%
5…c6 2% 1% ▼ -0.8%
Joueurs célèbres
Champions du monde dans cette position
Carlsen, Magnus — 3 parties
Botvinnik, Mikhail — 2 parties
Kramnik, Vladimir — 1 partie
Parties historiques
5…Bg7 — 76.0% (1076 parties)
1950 — Bolbochan, Jacobo vs Pilnik, Herman — 1/2-1/2 — Mar del Plata ARG
1950 — Hendricks, Benjamin vs CHUKS, Smith Daniel — 0-1 — Atascadero, CA
1950 — Bely, Miklos vs Molnar, Istvan — 0-1 — Budapest HUN
1951 — Troianescu, Octav vs Partyka, Kazimierz — 1-0 — Sopot
1951 — Donovan, Jeremiah vs Bills, William — 1-0 — Forth Worth
5…Be6 — 16.2% (229 parties)
1953 — Rosa e Silva Neto, Francisco de Assis vs Trifunovic, Petar — 0-1 — Rio de Janeiro BRA
1956 — Zamkovskaya, Violetta Aleks vs Livshin, Iosif — 1/2-1/2 — Kharkov UKR
1958 — Parr, Frank vs Milan S Gowda — 0-1 — British CC Ch 1958-59
1960 — Bielicki, Carlos vs Gadia, Olicio — 1-0 — ?
1960 — Bielicki, Carlos vs Gadia, Okicio — 1-0 — Mar del Plata ARG
5…a6 — 2.9% (41 parties)
1986 — Blaznik, Vojko vs Dietze, Frank — 0-1 — Balatonbereny HUN
1992 — Kane, Pascal Mouhamed Pagniez vs Roberts, Kaden — 0-1 — Detroit, MI USA
1995 — Papenkordt, Karl-Hermann vs Feichter, Clemens — 1-0 — Finkenstein
1996 — Alfonso, Beatriz vs Perez Asenjo, Ana Isabel — 1-0 — ?
1998 — Barbero, Gerardo F vs Zollbrecht, Josef — 0-1 — Biel SUI
5…c6 — 2.1% (30 parties)
1958 — Kramer, George vs Phillips, Hannah — 1-0 — New York, NY USA
1995 — Turunen, Pekka vs Karttunen, Mika — 1/2-1/2 — Kuopio
1999 — Reiss, Georg vs Schriebl, Alexander — 0-1 — Feffernitz
2003 — Koprek, Juergen vs Hufelschulte, Norbert — 1/2-1/2 — Ruhrgebiet
2003 — Girya, Olga vs Danilova, Anna — 1-0 — Kazan RUS