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B27t — Accelerated Pterodactyl (1957)
1.e4 c5 2.Nf3 g6 3.d4 Bg7 4.Nc3
Les coups candidats
4…cxd4 — 79.7% (4566 parties)
Ambassadeurs : Forintos, Gyozo V (22x), Vesselovsky, Serguei (21x), Ekebjaerg, Ove (15x), Kislinsky, Alexey (15x), Szabo, Laszlo (13x), Wojtkiewicz, Aleksander (11x), Leon Hoyos, Manuel (11x), Malakhov, Vladimir (10x)
4…Qa5 — 13.8% (788 parties)
Ambassadeurs : Kaposztas, Miklos (47x), Bak, Istvan (27x), Gutierrez Herrera, Jose Antonio (15x), Filipowicz, Andrzej (13x), Bangiev, Alexander (10x), Day, Lawrence A. (10x), Cuartas, Jaime Alexander (9x), Krizsan-Bilek, Gyulane (8x)
4…Nc6 — 4.9% (282 parties)
Ambassadeurs : Bak, Istvan (4x), Adamski, Jan (4x), Letelier Martner, Rene (4x), Holthuis, Willem (3x), Pogats, Jozsef Jr. (2x), Stein, Leonid (2x), Kuijsten, Piet H (2x), Wahjuwidajat, Utut Adianto (2x)
4…b6 — 0.5% (31 parties)
Ambassadeurs : Golyak, Isay G (2x), Gandolfi, Fred (2x), Archakova, Galina (1x), Krizsan-Bilek, Gyulane (1x), Ostojic, Predrag (1x), Vyslouzil, Antonin (1x), Grassi, Mario (1x), Paoli, Enrico (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…cxd4 4…Qa5 4…Nc6 4…b6
<1800 397 85% 9% 5% 1%
1800-2200 2531 80% 13% 5% 1%
2200-2600 1912 82% 15% 3% 0%
2600+ 19 100%
Évolution par décennie (% des parties)
Décennie N parties 4…cxd4 4…Qa5 4…Nc6 4…b6
1950s 13 46% 8% 31% 8%
1960s 299 62% 24% 12% 1%
1970s 220 67% 25% 6% 1%
1980s 213 73% 21% 3% 1%
1990s 828 76% 14% 6% 1%
2000s 1812 82% 13% 5% 0%
2010s 1974 84% 11% 4% 0%
2020s 367 84% 10% 4% 1%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…cxd4 84% 84% -0.1%
4…Qa5 11% 10% ▼ -1.3%
4…Nc6 4% 4% ▲ +0.6%
4…b6 0% 1% +0.2%
Joueurs célèbres
Champions du monde dans cette position
Hou, Yifan — 3 parties
Tal, Mikhail — 2 parties
Carlsen, Magnus — 2 parties
Botvinnik, Mikhail — 1 partie
Kramnik, Vladimir — 1 partie
Parties historiques
4…cxd4 — 79.7% (4566 parties)
1955 — Barta, Jan vs Sabata, Miroslav — 1-0 — Prague CZE
1956 — Herink, Miroslav vs Al Husari, Zita Fatima — 0-1 — Podebrady CZE
1958 — Cardoso, Radolfo Tan vs Szabo, Laszlo — 0-1 — Munich GER
1959 — Bertok, Mario Jr. vs Forintos, Gyozo V — 1-0 — Krakow POL
1959 — Blatny, Frantisek vs Szabo, Laszlo — 1-0 — Marianske Lazne
4…Qa5 — 13.8% (788 parties)
1959 — Bak, Istvan vs Haag, Ervin — 1/2-1/2 — HUN-ch Budapest HUN
1961 — Bozdoghina, Constantin vs Drimer, Dolfi — 1/2-1/2 — Romania
1961 — Hindle, Owen Mark vs Gibbs, Peter Campbell — 0-1 — Aberystwyth
1961 — Contedini, Ennio vs Haag, Ervin — 0-1 — Reggio Emilia ITA
1961 — Gunsberger, Alexander vs Soos, Bela — 1/2-1/2 — Romania
4…Nc6 — 4.9% (282 parties)
1954 — Ivkov, Borislav vs Damljanovic, Milos — 1-0 — YUG ch sf
1958 — Estrin, Yakov vs Prokhorovich, Taras E — 1-0 — Moscow RUS
1959 — Nikitin, A. vs Bak, Istvan — 0-1 — Budapest HUN
1959 — Tal, Mikhail vs Fischer, Robert J — 1/2-1/2 — JUG ct
1960 — Barden, Leonard vs Bak, Istvan — 1/2-1/2 — Leipzig GER
4…b6 — 0.5% (31 parties)
1957 — Grassi, Mario vs Paoli, Enrico — 1-0 — Reggio Emilia ch ITA
1962 — Archakova, Galina vs Krizsan-Bilek, Gyulane — 1-0 — Minsk BLR
1968 — Ostojic, Predrag vs Vyslouzil, Antonin — 1-0 — ?
1972 — Packroff, Hermann vs Pape, Manfred — 1/2-1/2 — Leipzig GER
1976 — Bergstrom, Christer vs Hickl, Thomas — 1/2-1/2 — Bremen GER