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A33g — Symmetrical, Two Knights (1927)
1.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.Ndb5
Les coups candidats
Ambassadeurs : De Firmian, Nick (13x), Wojtkiewicz, Aleksander (7x), Ebisch, Joachim (7x), Portisch, Lajos (6x), Andersson, Ulf (6x), Timman, Jan H (5x), Gligoric, Sofija (4x), Bocharov, Dmitry (4x)
6…d6 — 32.7% (501 parties)
Ambassadeurs : Matorin, Evgeny (6x), Golovko, Nikolay Grigorievic (2x), Smyslov, Vasily (2x), Corinthios, Mario (2x), Stoppel, Franz (2x), Vranesic, Zvonko (2x), Schiffer, Kai-Uwe (2x), Bocharov, Dmitry (2x)
Ambassadeurs : Polugaevsky, Lev (8x), Korchnoi, Viktor (5x), Hort, Vlastimil (4x), Szabo, Laszlo (3x), Andersson, Ulf (3x), Matulovic, Milan (2x), Langeweg, Kick (2x), Kholmov, Ratmir D (2x)
6…Bc5 — 7.7% (118 parties)
Ambassadeurs : Bakheet Farag (3x), Banas, Jan (2x), Gruenfeld, Yehuda (2x), Vuckovic, Bojan (2x), Vistaneckis, Isakas (1x), Koblencs, Alexander (1x), Weise, Daniel, Dr. (1x), Trapl, Jindrich (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 6…d5 6…d6 6…Bb4 6…Bc5
<1800 41 32% 41% 20% —
1800-2200 419 30% 43% 11% 8%
2200-2600 789 47% 29% 15% 8%
2600+ 51 69% 6% 22% 4%
Évolution par décennie (% des parties)
Décennie N parties 6…d5 6…d6 6…Bb4 6…Bc5
1950s 11 — 73% 18% 9%
1960s 36 17% 19% 53% 6%
1970s 70 20% 31% 31% 16%
1980s 168 46% 17% 23% 11%
1990s 272 46% 29% 13% 8%
2000s 442 43% 31% 13% 7%
2010s 442 38% 42% 10% 5%
2020s 90 44% 36% 12% 8%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
6…d5 38% 44% ▲ +6.0%
6…d6 42% 36% ▼ -6.5%
6…Bb4 10% 12% ▲ +2.5%
6…Bc5 5% 8% ▲ +2.8%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Anatoly — 3 parties
Tal, Mikhail — 2 parties
Kramnik, Vladimir — 1 partie
Parties historiques
6…d5 — 40.6% (622 parties)
1964 — Bronstein, David I vs Geller, Efim P. — 1/2-1/2 — Zonal tournament
1964 — Bronstein, David I vs Geller, Efim P. — 1/2-1/2 — Moskou zt
1964 — Trifunovic, Petar vs Spassky, Boris V. — 1/2-1/2 — Belgrade SRB
1964 — Trifunovic, Petar vs Spassky, Boris Vasily — 1/2-1/2 — Belgrade SRB
1966 — Bak, Istvan vs Jansa, Vlastimil — 1-0 — Harrachov
6…d6 — 32.7% (501 parties)
1950 — Alatortsev, Vladimir N. vs Kopilov, Nikolay Georgiyevich — 1-0 — Leningrad RUS
1950 — Babel August vs Osterwald, Karl Heinz — 1-0 — ?
1954 — Batuev, Andrey M vs Veltmander, Iogannes — 1-0 — Riga LAT
1954 — Golovko, Nikolay Grigorievic vs Grechkin, Dmitry M — 1-0 — Riga LAT
1955 — Smyslov, Vasily vs Mikenas, Vladas — 1-0 — Moskou ch-URS
6…Bb4 — 15.0% (229 parties)
1957 — Blagidze, Alexander vs Geller, Efim P. — 0-1 — Kiev UKR
1957 — Illgen, Hans vs Soelter, Reinhold — 1/2-1/2 — Brakel
1961 — Lehmann, Heinz vs Langeweg, Kick — 1/2-1/2 — Zevenaar
1961 — Khasin, Abram vs Stein, Leonid — 1/2-1/2 — Moskou
1963 — Benes, Vratislav vs Ivan, Imrich — 1/2-1/2 — Zvolen
6…Bc5 — 7.7% (118 parties)
1956 — Vistaneckis, Isakas vs Koblencs, Alexander — 1/2-1/2 — Tallinn EST
1961 — Weise, Daniel, Dr. vs Trapl, Jindrich — 1-0 — Oberhausen etc
1968 — Grey, Peter G vs Blackstone, John — 0-1 — No. CA
1970 — Szilagyi, Gyorgy Laszlo vs Planinec, Albin — 0-1 — Varna BUL
1973 — Rubinetti, Jorge vs Leskovar, Mario — 1-0 — Zarate