E04c — Open
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Nf3 Nbd7
Eval: [+0.50]
Les coups candidats
6.O-O — 61.9% (697 parties)
Ambassadeurs : Leniart, Arkadiusz (11x), Rashkovsky, Nukhim N (6x), Meijers, Viesturs (5x), Korchnoi, Viktor (4x), Nikitin, Georgy (4x), Bernotas, Arturs (4x), Gelfand, Boris (4x), Yakimova, Mariya (4x)
Ambassadeurs : Pupols, Viktors (3x), Petrosian, Tigran A. (2x), Laine, Panu (2x), Pieper-Emden, Carsten (2x), Kustar, Sandor (2x), Haug, Finn (2x), Mikalsen, Odd Erling (2x), Ernst, Sipke (2x)
6.Nbd2 — 10.5% (118 parties)
Ambassadeurs : Vukic, Milan (3x), Schneider, Lars-Ake (3x), Opocensky, Karel (2x), Karaklajic, Nikola (2x), Zilberstein, Valery I (2x), Alatortsev, Vladimir N. (1x), Keres, Paul (1x), Kottnauer, Cenek (1x)
6.Qc2 — 3.2% (36 parties)
Ambassadeurs : Katetov, Miroslav (2x), Bondarevsky, Igor (2x), Ojanen, Kaarle S (1x), Szily, Jozsef (1x), Milic, Borislav (1x), Kulzinski, Nikolaj (1x), Riha, Vaclav (1x), Krajina, Ales (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 6.O-O 6.Qa4 6.Nbd2 6.Qc2
<1800 24 50% 33% 4% 8%
1800-2200 272 51% 33% 8% 4%
2200-2600 611 68% 15% 10% 2%
2600+ 33 79% 3% 6%
Évolution par décennie (% des parties)
Décennie N parties 6.O-O 6.Qa4 6.Nbd2 6.Qc2
1930s 4 25% 50%
1940s 15 27% 13% 33% 27%
1950s 28 54% 21% 18%
1960s 20 50% 25% 25%
1970s 49 57% 14% 29%
1980s 92 70% 11% 17% 2%
1990s 144 53% 26% 15% 2%
2000s 194 60% 28% 8% 3%
2010s 301 59% 25% 8% 5%
2020s 279 73% 12% 4% 3%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
6.O-O 59% 73% ▲ +13.6%
6.Qa4 25% 12% ▼ -13.4%
6.Nbd2 8% 4% ▼ -3.3%
6.Qc2 5% 3% ▼ -1.8%
Joueurs célèbres
Champions du monde dans cette position
Smyslov, Vladimir — 4 parties
Tal, Mikhail — 2 parties
Carlsen, Magnus — 2 parties
Euwe, Max — 1 partie
Karpov, Aleksandr — 1 partie
Kasparov, Garry — 1 partie
Kramnik, Vladimir — 1 partie
Gukesh D — 1 partie
Parties historiques
6.O-O — 61.9% (697 parties)
1938 — Kaiev, Lev Alexeevich vs Panov, Vasily — 1-0 — URS-ch sf Kiev UKR
1940 — Opocensky, Karel vs Podgorny, Jiri — 1-0 — Rakovnik
1941 — Opocensky, Karel vs Del Valle Milan, Moises — 1-0 — Trencianske Teplice SVK
1942 — Rossetto, Hector vs Guimard, Carlos E — 1-0 — Argentina
1949 — Lipnitsky, Isaac vs Ratner, Boris — 1-0 — Odessa UKR
6.Qa4 — 20.5% (231 parties)
1947 — Kasparian, Genrikh vs Tolush, Alexander V — 1-0 — Parnu EST
1948 — Alatortsev, Vladimir N. vs Ragozin, Viacheslav — 1/2-1/2 — Moskou ch-URS
1951 — Macskasy, Elod vs Kapu, Jeno — 0-1 — Budapest HUN
1952 — Eliskases, Erich vs Prins, Laura — 1-0 — Saltsjobaden SWE
1952 — Vukovic, Sava vs Djaja, Dragutin — 1-0 — Belgrade SRB
6.Nbd2 — 10.5% (118 parties)
1939 — Opocensky, Karel vs Silva Rocha, Adhemar — 1-0 — olm Buenos Aires
1939 — Opocensky, Karel vs da Silva Rocha, Adhemar — 1-0 — Buenos Aires ARG
1944 — Foltys, Jan vs Prucha, Karel — 1-0 — Brno CZE
1947 — Lilienthal, Andor vs Kan, Ilya A — 1/2-1/2 — Leningrad ch-URS
1948 — Alatortsev, Vladimir N. vs Keres, Paul — 1/2-1/2 — Moskou ch-URS
6.Qc2 — 3.2% (36 parties)
1946 — Katetov, Miroslav vs Bondarevsky, Igor — 0-1 — Moscow RUS
1946 — Katetov, Miroslav vs Bondarevsky, Igor — 0-1 — Moscow RUS
1947 — Milic, Borislav vs Kulzinski, Nikolaj — 0-1 — Ljubljana SLO
1949 — Ojanen, Kaarle S vs Szily, Jozsef — 0-1 — Trencianske Teplice SVK
1983 — Eretova, Kveta vs Zolmanova, Marcela — 1/2-1/2 — Sumperk