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B27s — Accelerated Pterodactyl
1.e4 c5 2.Nf3 g6 3.d4 Bg7 4.c4
Eval: [+0.55]
Les coups candidats
4…cxd4 — 56.8% (3192 parties)
Ambassadeurs : Hoffman, Alejandro (15x), Suba, Mihai (12x), Cvetkovic, Srdjan (11x), Habibi, Ali (10x), Uhlmann, Wolfgang (9x), Adamski, Jan (9x), Bellon Lopez, Juan Manuel (8x), Velimirovic, Dragoljub (8x)
Ambassadeurs : Forintos, Gyozo V (10x), Bilek, Istvan (10x), Szalanczi, Emil (9x), Topalov, Veselin (9x), Ribli, Zoltan (9x), Smejkal, Jan (8x), Velimirovic, Dragoljub (7x), Andersson, Ulf (7x)
Ambassadeurs : Sermek, Drazen (33x), Gheorghiu, Florin (19x), Vesselovsky, Serguei (10x), Nesterov, Yakov (7x), Chekhov, Valery A (7x), Khasin, Alexander (7x), Dizdar, Goran (7x), Adamski, Jan (7x)
4…Qb6 — 8.0% (448 parties)
Ambassadeurs : Wojtkiewicz, Aleksander (17x), Petrov, Marian (13x), Nevednichy, Vladislav (9x), Markowski, Tadeusz (8x), Markowski, Tomasz (7x), Loeffler, Stefan (7x), Hentunen, Asko (6x), Rajlich, Iweta (6x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…cxd4 4…d6 4…Qa5+ 4…Qb6
<1800 104 79% 5% 2% 7%
1800-2200 1471 73% 7% 6% 5%
2200-2600 3362 49% 16% 16% 10%
2600+ 96 32% 33% 14% 15%
Évolution par décennie (% des parties)
Décennie N parties 4…cxd4 4…d6 4…Qa5+ 4…Qb6
1900s 1 100%
1920s 1 100%
1930s 2 100%
1950s 19 53% 16%
1960s 67 43% 24% 3% 1%
1970s 350 40% 20% 19% 1%
1980s 315 46% 17% 17% 2%
1990s 849 53% 14% 19% 4%
2000s 1624 49% 15% 12% 16%
2010s 1905 68% 11% 8% 7%
2020s 491 70% 12% 10% 3%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…cxd4 68% 70% ▲ +2.1%
4…d6 11% 12% ▲ +1.1%
4…Qa5+ 8% 10% ▲ +1.5%
4…Qb6 7% 3% ▼ -3.6%
Joueurs célèbres
Champions du monde dans cette position
Botvinnik, Mikhail — 4 parties
Smyslov, Vladimir — 4 parties
Kramnik, Vladimir — 4 parties
Kasparov, Garry — 2 parties
Tal, Mikhail — 2 parties
Karpov, Anatoly — 1 partie
Ju, Wenjun — 1 partie
Parties historiques
4…cxd4 — 56.8% (3192 parties)
1908 — Tartakower, Savielly vs Mieses, Jacques — 1/2-1/2 — Vienna AUT
1924 — Rosselli del Turco, Stefano vs Monticelli, Mario — 1/2-1/2 — Foligno ITA
1930 — Grau Palau Holt vs Romano Pedrozo — 1/2-1/2 — Circulo vs Sao Paulo
1934 — Bolbochan, J. vs Agama Hernandez, Juan Jesus — 1/2-1/2 — Mar del Plata ARG
1950 — Aitken, James vs Fazekas, Stephan — 0-1 — Ilford
4…d6 — 13.7% (768 parties)
1957 — Cortlever vs Barendregt, Jos — 1-0 — NLD-ch Amsterdam NED
1957 — Smyslov, Vasily vs Botvinnik, Mikhail — 1-0 — 12 Moscow Wch-m
1957 — Smyslov, Vladimir vs Botvinnik, Mikhail — 1-0 — Moskou wch-m
1960 — Endzelins, Lucius vs Ozols, Karlis — 1/2-1/2 — Adelaide AUS
1960 — Trifunovic, Petar vs Lokvenc, Josef — 1/2-1/2 — Marianske Lazne
4…Qa5+ — 12.3% (692 parties)
1965 — Harju, Antero vs Roenning, Svante — 0-1 — Finland ch corr
1966 — Gipslis, Aivars vs Stein, Leon Rico — 1/2-1/2 — Tbilisi ch-URS
1970 — Trikaliotis, Georgios vs Adamski, Jan — 0-1 — Siegen olm
1972 — Donchenko, Anatoly vs Khodos, German — 1-0 — Rostov on Don
1973 — Christiansen , Luis vs Beliavsky, Alexander G — 0-1 — Teesside ENG
4…Qb6 — 8.0% (448 parties)
1963 — Jester, Christian vs Rogosin, Hy — 1-0 — Westchester, CA
1971 — Loftsson, Julius H vs Noel Richard W — 1-0 — USA-72ch Ventura
1979 — Kogan, Izrail vs Kalinitschew, Sergey — 1/2-1/2 — Moscow RUS
1981 — Grooten, Herman vs Aleksic, Nenad — 0-1 — Caorle op Caorle ITA
1983 — Vukic, Milan vs Robatsch, Karl — 0-1 — Tuzla