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A33d — Symmetrical, Two Knights (1947)
1.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.e3
Les coups candidats
6…Bb4 — 40.2% (275 parties)
Ambassadeurs : Matulovic, Milan (2x), Suetin, Alexey S (2x), Prameshuber, Alexander (2x), Baev, Pavel (1x), Keres, Paul (1x), Shashin, Alexsander A (1x), Tolonen, Leo (1x), Sliwa, Bogdan (1x)
6…Be7 — 23.0% (157 parties)
Ambassadeurs : Peschel, Andreas (2x), Maiwald, Jens-Uwe (2x), Shankland, Sam (2x), Paidousis, Aristidis (1x), Kchouk, Bechir (1x), Petrosian, Tigran A. (1x), Spassky, Alexandre (1x), Petrosian, Tigran V. (1x)
6…d5 — 19.4% (133 parties)
Ambassadeurs : Karpov, Anatoly (3x), Petrosian, Tigran V. (3x), Berndt, Klaus (2x), Vaitonis, Povilas (1x), Sherwin, James T (1x), Blagidze, Alexander (1x), Vasiukov, Evgeni (1x), Milev, Zdravko (1x)
6…a6 — 9.6% (66 parties)
Ambassadeurs : Grillitsch, Karl (2x), Lendwai, Reinhard (2x), Gianordoli Cesar (1x), Jose, Ribeiro (1x), Zamkovskaya, Violetta Aleks (1x), Tokarev, Aleksandr (1x), Balcerowski, Witold (1x), Pytel, Krzysztof (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 6…Bb4 6…Be7 6…d5 6…a6
<1800 44 41% 23% 9% 18%
1800-2200 236 39% 25% 18% 11%
2200-2600 255 42% 23% 23% 6%
2600+ 19 21% 16% 58% —
Évolution par décennie (% des parties)
Décennie N parties 6…Bb4 6…Be7 6…d5 6…a6
1950s 16 69% 12% 19% —
1960s 29 41% 21% 28% 7%
1970s 37 35% 19% 32% 8%
1980s 27 48% 30% 15% 7%
1990s 107 30% 25% 20% 14%
2000s 184 38% 26% 15% 12%
2010s 216 43% 22% 17% 9%
2020s 68 47% 16% 29% 4%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
6…Bb4 43% 47% ▲ +4.5%
6…Be7 22% 16% ▼ -6.0%
6…d5 17% 29% ▲ +12.3%
6…a6 9% 4% ▼ -4.4%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Anatoly — 3 parties
Ju, Wenjun — 2 parties
Tal, Mikhail — 1 partie
Kramnik, Vladimir — 1 partie
Hou, Yifan — 1 partie
Parties historiques
6…Bb4 — 40.2% (275 parties)
1952 — Partyka, Kazimierz vs Balanel, Ion — 1/2-1/2 — Miedzyzdroje
1954 — Baev, Pavel vs Keres, Paul — 0-1 — New York, NY USA
1954 — Wade, Robert G vs Milic, Borislav — 1/2-1/2 — Belgrade SRB
1954 — Porrecca, Giorgio vs Anay Barche — 0-1 — Belgrade SRB
1956 — Rovner, Dmitry vs Kotov, Alexander — 1/2-1/2 — Leningrad RUS
6…Be7 — 23.0% (157 parties)
1956 — Bannik, Anatolij vs Kholmov, Ratmir D — 0-1 — Leningrad ch-URS
1957 — Troger, Emma vs Schuster, Theodor — 1-0 — Bad Neuenahr GER
1960 — Paidousis, Aristidis vs Kchouk, Bechir — 1/2-1/2 — Leipzig GER
1965 — Balcerowski, Witold vs Buslaev, Aleksander — 0-1 — Tbilisi Tbilisi GEO
1966 — Petrosian, Tigran A. vs Spassky, Alexandre — 1/2-1/2 — Moscow RUS
6…d5 — 19.4% (133 parties)
1953 — Wade, Robert G vs Barden, Leonard — 1/2-1/2 — Hastings ch-BCF
1956 — Vaitonis, Povilas vs Sherwin, James T — 0-1 — Montreal CAN
1957 — Blagidze, Alexander vs Vasiukov, Evgeni — 1/2-1/2 — Kiev UKR
1963 — Keene, Raymond D vs Michael John Basman — 1-0 — Bognor
1963 — Rapaka Samuel Paul vs Fischer, Robert J — 0-1 — New York, NY USA
6…a6 — 9.6% (66 parties)
1961 — Gianordoli Cesar vs Jose, Ribeiro — 0-1 — ?
1963 — Zamkovskaya, Violetta Aleks vs Tokarev, Aleksandr — 1/2-1/2 — Kiev UKR
1975 — Balcerowski, Witold vs Pytel, Krzysztof — 1-0 — Augustow Tch-POL
1976 — Sorensen, Arne vs Oe, Gunnar — 1/2-1/2 — DEN
1977 — Knezevic, Milorad vs Messing, Hrvoje — 1/2-1/2 — Zagreb CRO