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B56p — Open (1951)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Be3 e5
Les coups candidats
7.Nb3 — 51.2% (728 parties)
Ambassadeurs : Sochorova, Petra (4x), Drimer, Dolfi (3x), Pastir, Stanislav (3x), Ostojic, Predrag (2x), Andres De Jesus, Miguel Angel (2x), Vilela De Acuna, Jose Luis (2x), Franco Ocampos, Zenon (2x), Lobron, Eric (2x)
7.Nf3 — 32.1% (457 parties)
Ambassadeurs : Wittmann, Walter (10x), Kapengut, Albert (7x), Adams, Michael (7x), Sherzer, Alex (6x), Martin Del Campo Cardenas, Roberto Abel (5x), Chandler, Murray G (5x), Novik, Maxim (4x), Mukhametov, Eldar (4x)
7.Ndb5 — 9.5% (135 parties)
Ambassadeurs : Aadhitha Karikalan (7x), Szalanczi, Emil (7x), Perenyi, Bela (4x), Madl, Ildiko (4x), Ragozin, Viacheslav (3x), Csom, Istvan (3x), Szilagyi, Gyorgy Laszlo (2x), Inkiov, Ventzislav (2x)
7.Nxc6 — 4.7% (67 parties)
Ambassadeurs : Balanel, Ion (1x), Ghitescu, Theodor (1x), Lieberman, Dr. David (1x), OBrien, Erik Michael (1x), Paoli, Enrico (1x), Unzicker, Ferdinand, Dr. (1x), Leung, Michael (1x), Tcheng, Jason (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 7.Nb3 7.Nf3 7.Ndb5 7.Nxc6
<1800 113 53% 25% 15% 6%
1800-2200 560 62% 24% 8% 4%
2200-2600 524 41% 46% 8% 2%
2600+ 4 25% 75%
Évolution par décennie (% des parties)
Décennie N parties 7.Nb3 7.Nf3 7.Ndb5 7.Nxc6
1950s 18 17% 78% 6%
1960s 26 50% 12% 31% 8%
1970s 48 33% 19% 23% 6%
1980s 113 33% 48% 16% 1%
1990s 418 40% 53% 3% 3%
2000s 393 60% 22% 9% 6%
2010s 344 63% 21% 7% 6%
2020s 62 58% 18% 19% 5%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
7.Nb3 63% 58% ▼ -5.3%
7.Nf3 21% 18% ▼ -3.5%
7.Ndb5 7% 19% ▲ +12.1%
7.Nxc6 6% 5% ▼ -1.0%
Joueurs célèbres
Champions du monde dans cette position
Anand, Viswanathan — 5 parties
Karpov, Anatoly — 1 partie
Tal, Mikhail — 1 partie
Hou, Yifan — 1 partie
Parties historiques
7.Nb3 — 51.2% (728 parties)
1956 — Cardoso, Radolfo Tan vs Middleton, Ian — 1/2-1/2 — Moscow RUS
1957 — Blonarovych, Lev vs Owens, Brian — 0-1 — East Orange
1957 — Delgado Ramirez, Felix David vs Byrne, Robert E — 0-1 — Cleveland, OH USA
1961 — Nasser, Sergio vs De Souza Mendes, Joao — 0-1 — Vitoria
1961 — Karpov, Anatoly vs Mukhudulin — 1/2-1/2 — Zlatoust
7.Nf3 — 32.1% (457 parties)
1968 — Bhend, Edwin vs Drimer, Dolfi — 0-1 — Lugano olm
1969 — Kapengut, Albert vs Furman, Semyon — 0-1 — Rostov on Don
1969 — Baretic, Zvonimir vs Benko, Pal — 0-1 — Vrsac SRB
1970 — Miyasaka, Yukio vs Patterson, Nicholas J — 1-0 — Siegen olm
1976 — Kapengut, Albert vs Yuferov, Sergey N — 1-0 — Soviet Union
7.Ndb5 — 9.5% (135 parties)
1956 — Ragozin, Viacheslav vs Szilagyi, Gyorgy Laszlo — 1/2-1/2 — Marianske Lazne
1956 — Ragozin, Viacheslav vs Stahlberg, Gideon — 1/2-1/2 — Marianske Lazne
1956 — Ragozin, Viacheslav vs Zurakhov, Vladlen Y — 1-0 — Leningrad ch-URS
1956 — Rittner, Horst vs Malich, Burkhard, Dr. — 1/2-1/2 — Leipzig GER
1956 — Neishtadt, Yakov vs Slepoy, Yosef — 1/2-1/2 — Leningrad RUS
7.Nxc6 — 4.7% (67 parties)
1951 — Paoli, Enrico vs Unzicker, Ferdinand, Dr. — 1/2-1/2 — Lucerne SUI
1960 — Balanel, Ion vs Ghitescu, Theodor — 0-1 — Bucharest ROU
1966 — Lieberman, Dr. David vs OBrien, Erik Michael — 0-1 — Sunnyvale
1972 — Kirov, Nino vs Spassov, Liuben — 1/2-1/2 — Sofia BUL
1972 — Triemstra, William vs Chouinard, Sylvain — 0-1 — CCCA corr