E04v - 6.Qa4 - Open (1946)

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E04v — Open (1946)
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Nf3 Nc6 6.Qa4
Les coups candidats
Ambassadeurs : Aleksandrov, Viktor A. (27x), Langer, Raimund (23x), Szczepanski, Zbigniew (13x), Potrata, Janko (12x), Wosch, Arkadiusz (12x), Wojtkiewicz, Aleksander (11x), Sage, François (11x), Mason, Ian J (11x)
6…Nd7 — 8.2% (360 parties)
Ambassadeurs : Naiditsch, Arkadij (12x), Klovans, Janis (5x), Sveshnikov, Evgeny (5x), Rabiega, Robert (5x), Alekseev, Evgeny (5x), Kopylov, Michael (5x), Zvjaginsev, Vadim (4x), Berikkyzy, Alanna (4x)
6…Bd7 — 7.2% (317 parties)
Ambassadeurs : Plachetka, Jan (6x), Meijers, Viesturs (6x), Tang, Andrew (5x), Olafsson, Helgi (3x), Gurevich, Dmitry (3x), Kacheishvili, Giorgi (3x), Antal, Tibor Kende (3x), Buhmann, Rainer (3x)
6…Bd6 — 1.9% (85 parties)
Ambassadeurs : Milov, Vadim (5x), Vukovic, Zdravko (2x), Carapinha, Francisco Manuel (2x), Bilyap, Siracettin (1x), Green, SL. (1x), Kelecevic, Nedeljko (1x), Nikolac, Juraj (1x), Kovtun, Sergei (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 6…Bb4+ 6…Nd7 6…Bd7 6…Bd6
<1800 136 78% 4% 12% 2%
1800-2200 1479 79% 7% 7% 2%
2200-2600 2368 80% 9% 7% 2%
2600+ 159 77% 14% 6% 2%
Évolution par décennie (% des parties)
Décennie N parties 6…Bb4+ 6…Nd7 6…Bd7 6…Bd6
1950s 6 33% 17% 50% —
1960s 1 100% — — —
1970s 6 — — 33% 33%
1980s 37 32% 32% 16% 5%
1990s 289 62% 16% 14% 4%
2000s 965 75% 13% 6% 2%
2010s 2411 83% 6% 7% 2%
2020s 668 84% 6% 7% 1%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
6…Bb4+ 83% 84% ▲ +0.7%
6…Nd7 6% 6% ▲ +0.6%
6…Bd7 7% 7% -0.1%
6…Bd6 2% 1% -0.4%
Joueurs célèbres
Champions du monde dans cette position
Kramnik, Vladimir — 9 parties
Ju, Wenjun — 8 parties
Karpov, Anatoly — 5 parties
Hou, Yifan — 4 parties
Anand, Viswanathan — 3 parties
Kasparov, Garry — 1 partie
Carlsen, Magnus — 1 partie
Botvinnik, Mikhail — 1 partie
Gukesh D — 1 partie
Parties historiques
6…Bb4+ — 79.4% (3482 parties)
1954 — Veltmander, Iogannes vs Gipslis, Aivars — 1/2-1/2 — Riga LAT
1956 — Zilber, Israel vs Rovner, Dmitry — 1-0 — Leningrad RUS
1960 — Shamkovich, Leonid vs Vladimirov, Boris T — 1/2-1/2 — Moscow RUS
1980 — Filipek, Alex vs Janik, Stanislav — 1-0 — corr ch-CSSR
1982 — Lalic, Bogdan vs Levitt, Jonathan P — 1/2-1/2 — France ch jr
6…Nd7 — 8.2% (360 parties)
1958 — Malich, Burkhard, Dr. vs Anay Barche — 1/2-1/2 — Asztalos Mem
1986 — Gelfand, Boris vs Ivanchuk, Vasyl — 1/2-1/2 — Sochi RUS
1987 — Vanheste, Jeroen vs Sosonko, Gennadi — 0-1 — Hilversum ch-NED
1987 — Tukmakov, Vladimir B vs Gelfand, Boris — 1/2-1/2 — Sverdlovsk
1988 — Dokhoian, Yury vs Gelfand, Boris — 1/2-1/2 — Klaipeda
6…Bd7 — 7.2% (317 parties)
1955 — Secchi, Eduardo vs Corbijn, Juan — 1-0 — cr.
1958 — Cafferty, Bernard vs Cammack, GE. — 1-0 — ?
1958 — Lombardy, William J vs Bisguier, Arthur B — 1/2-1/2 — Bogota COL
1978 — Hausner, Ivan vs Lechtynsky, Jiri — 1/2-1/2 — Marianske Lazne
1979 — Ftacnik, Lubomir vs Lechtynsky, Jiri — 0-1 — Czechoslovakia
6…Bd6 — 1.9% (85 parties)
1974 — Bilyap, Siracettin vs Green, SL. — 1-0 — Nice FRA
1978 — Kelecevic, Nedeljko vs Nikolac, Juraj — 1/2-1/2 — Eerbeek NED
1985 — Polgar, Susan vs Benjamin, Joel — 1/2-1/2 — Dortmund GER
1989 — Kovtun, Sergei vs Sergeev, Valdemar — 1/2-1/2 — Simferopol UKR
1991 — Romanishin, Oleg M vs Pomes Marcet, Joan — 1-0 — ?