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E07a — Closed
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 O-O 6.O-O Nbd7
Eval: [+0.38]
Les coups candidats
Ambassadeurs : Sosonko, Gennadi (17x), Farago, Ivan (15x), Veingold, Aleksandr (12x), Benko, Pal (10x), Portisch, Lajos (10x), Belchev, Branimir Petrov (10x), Smejkal, Jan (9x), Vukic, Milan (9x)
Ambassadeurs : Chetverik, Maxim (8x), Inkiov, Ventzislav (7x), Ragozin, Viacheslav (4x), Borriss, Claudia (4x), Najdorf, Miguel (3x), Sunye Neto, Jaime (3x), Neckar, Lubomir (3x), Gross, Georg (3x)
Ambassadeurs : Ganzera, Andrea, Dr. (6x), Amigo Roman, Pedro (5x), Sliwa, Bogdan (4x), Raicevic, Vladimir (3x), Kunsztowicz, Uwe (3x), Ujtelky, Maximilian (2x), Lendl, Jiri (2x), Acevedo Ortega, Rodrigo Andres (2x)
Ambassadeurs : Grechkin, Dmitry M (3x), Heinicke, Herbert (3x), Matanovic, Aleksandar (3x), Golub, Nikolina (3x), Bogoljubow, Efim (2x), Yudovich, Mikhail M (2x), Bondarevsky, Igor (2x), Troianescu, Octav (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 7.Qc2 7.Nc3 7.b3 7.Nbd2
<1800 227 58% 14% 7% 15%
1800-2200 2491 60% 12% 11% 9%
2200-2600 2754 72% 8% 8% 6%
2600+ 79 80% 3% 9% 3%
Évolution par décennie (% des parties)
Décennie N parties 7.Qc2 7.Nc3 7.b3 7.Nbd2
1920s 3 33% 33%
1930s 31 26% 32% 13% 19%
1940s 60 45% 18% 12% 20%
1950s 83 36% 13% 18% 19%
1960s 149 53% 9% 14% 16%
1970s 338 63% 11% 12% 9%
1980s 457 65% 9% 11% 8%
1990s 1125 61% 12% 14% 8%
2000s 1496 63% 11% 11% 8%
2010s 2440 67% 11% 8% 8%
2020s 714 71% 10% 6% 7%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
7.Qc2 67% 71% ▲ +4.4%
7.Nc3 11% 10% ▼ -0.5%
7.b3 8% 6% ▼ -2.0%
7.Nbd2 8% 7% ▼ -1.2%
Joueurs célèbres
Champions du monde dans cette position
Smyslov, Vladimir — 7 parties
Botvinnik, Mikhail — 5 parties
Alekhine, Alexander — 4 parties
Ju, Wenjun — 4 parties
Tal, Mikhail — 3 parties
Anand, Viswanathan — 2 parties
Carlsen, Magnus — 2 parties
Lasker, Emanuel — 1 partie
Gukesh D — 1 partie
Parties historiques
7.Qc2 — 64.0% (4411 parties)
1929 — Patay, Gyula vs Naegeli, Oskar — 1-0 — Venice ITA
1933 — Landau, Salo vs Spielmann, Rudolf — 1/2-1/2 — Amsterdam NED
1935 — Rovner, Dmitry vs Rauzer, Vsevolod — 1-0 — Leningrad RUS
1936 — Alatortsev, Vladimir N. vs Ragozin, Viacheslav — 1-0 — Leningrad RUS
1936 — Dake, Arthur William vs Kupchik, Abraham — 1-0 — New York ch-USA
7.Nc3 — 11.0% (756 parties)
1935 — Almirall Vicente vs Clotas Manuel — 1-0 — Madrid ch
1936 — Ragozin, Viacheslav vs Levenfish, Grigory — 1/2-1/2 — Leningrad RUS
1936 — Botvinnik, Mikhail vs Tylor, Theodore Henry — 1-0 — Nottingham ENG
1936 — Botvinnik, Mikhail vs Lasker, Emanuel — 1-0 — Moscow RUS
1936 — Menchik, Vera Frantsevna vs Pirc, Vasja — 0-1 — Podebrady CZE
7.b3 — 10.3% (709 parties)
1925 — Reti, Richard vs Romanovsky, Pjotr — 0-1 — Leningrad RUS
1930 — Helling, Karl vs Steiner, Herman — 1/2-1/2 — Berlin GER
1933 — Bogoljubow, Efim vs Maroczy, Geza — 1/2-1/2 — Scheveningen NED
1938 — Grau, Roberto G vs Lalich, Voyin — 1-0 — Buenos Aires ARG
1938 — Mazel, Isaak Y vs Grechkin, Dmitry M — 1-0 — Leningrad RUS
7.Nbd2 — 8.3% (572 parties)
1932 — Robitsek Paul vs Becker, Albert — 1/2-1/2 — Vienna AUT
1935 — Bogoljubow, Efim vs Stoltz, Gosta — 0-1 — Sopot
1937 — Yudovich, Mikhail M vs Levenfish, Grigory — 1/2-1/2 — Tbilisi ch-URS
1938 — Grechkin, Dmitry M vs Gothilf, Solomon Borisovich — 1/2-1/2 — Leningrad RUS
1938 — Grechkin, Dmitry M vs Sokolsky, Alexey — 0-1 — Leningrad RUS