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B06o —
1.e4 g6 2.d4 Bg7 3.Nc3 d6 4.Be3
Eval: [+0.56]
Les coups candidats
Ambassadeurs : Haub, Thorsten Michael (63x), Hillarp Persson, Tiger (61x), Chatalbashev, Boris (52x), Choroszej, Aleksander (52x), Buchal, Stephan (50x), Almeida Quintana, Omar (41x), Shoker, Samy (35x), Azmaiparashvili, Zurab (34x)
Ambassadeurs : McNab, Colin A (103x), Rasik, Vitezslav (28x), Engelbert, Christoph (15x), Armstrong, Robert J (14x), Secondi, Alberto (12x), Kebis, Milos (12x), Gorsek, Gregor (12x), Shields, Glen D (11x)
Ambassadeurs : Petran, Peter (39x), Degterev, Pavel (36x), Todorcevic Antic, Miodrag (32x), Movsziszian, Karen (30x), Lehtinen, Heikki (26x), Rosen, Daniel B (24x), Kljako, Damir (23x), Tkachiev, Vladislav (19x)
4…Nd7 — 7.7% (2068 parties)
Ambassadeurs : Andersen, Jackie (17x), Stric, Dusan (13x), Feustel, Bernd (12x), Varga, Karoly (11x), Rudd, Jack (10x), Kovacs, Jozsef (9x), Dzhumaev, Marat (9x), Cedikova, Katerina (7x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…a6 4…Nf6 4…c6 4…Nd7
<1800 655 27% 41% 10% 11%
1800-2200 10344 36% 28% 19% 10%
2200-2600 11990 53% 14% 25% 5%
2600+ 281 73% 5% 15% 4%
Évolution par décennie (% des parties)
Décennie N parties 4…a6 4…Nf6 4…c6 4…Nd7
1900s 1 100%
1920s 2 100%
1940s 3 100%
1950s 31 48% 16% 6%
1960s 295 4% 41% 38% 11%
1970s 455 17% 29% 47% 4%
1980s 714 19% 32% 37% 7%
1990s 4143 22% 30% 33% 8%
2000s 8586 38% 24% 23% 9%
2010s 9917 51% 21% 15% 7%
2020s 2610 63% 15% 14% 5%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…a6 51% 63% ▲ +12.0%
4…Nf6 21% 15% ▼ -6.5%
4…c6 15% 14% ▼ -1.7%
4…Nd7 7% 5% ▼ -2.1%
Joueurs célèbres
Champions du monde dans cette position
Anand, Viswanathan — 10 parties
Hou, Yifan — 10 parties
Carlsen, Magnus — 6 parties
Gukesh D — 5 parties
Tal, Mikhail — 3 parties
Smyslov, Vladimir — 3 parties
Kasparov, Garry — 3 parties
Botvinnik, Mikhail — 1 partie
Karpov, Anatoly — 1 partie
Ju, Wenjun — 1 partie
Kramnik, Vladimir — 1 partie
Parties historiques
4…a6 — 41.4% (11090 parties)
1963 — Kupka, Slavoj vs Ujtelky, Maximilian — 1-0 — Prague CZE
1965 — Canal, Esteban vs Ujtelky, Maximilian — 0-1 — Reggio Emilia ITA
1968 — Gheorghiu, Florin vs Mecking, Henrique — 1/2-1/2 — Lugano SUI
1968 — Rubinetti, Jorge vs Quinteros, Miguel A. — 1/2-1/2 — Buenos Aires ARG
1968 — Balinas, Rosendo C vs Ivkov, Borislav — 0-1 — 18th Olympiad final A
4…Nf6 — 23.5% (6300 parties)
1922 — Nimzowitsch, Aron vs Pritzel, ACM. — 1-0 — Copenhagen DEN
1924 — Kittson vs Gale, Sidney — 0-1 — Hamilton
1947 — Dubinin, Peter vs Ufimtsev, Anatoly — 1/2-1/2 — Leningrad ch-URS
1947 — Lob, Chris vs Primavera, Roberto — 0-1 — Switzerland
1947 — Potucek, Ludovit vs Gotti, Marco — 1-0 — Paris FRA
4…c6 — 21.8% (5829 parties)
1950 — Guldin, Lev Isaevich vs Ufimtsev, Anatoly — 0-1 — Gorky
1955 — Bogdanovic, Rajko vs Milic, Borislav — 1-0 — Novi Sad SRB
1957 — Vukovic, Sava vs Barcza, Gedeon — 1/2-1/2 — San Benedetto
1958 — Eliskases, Erich vs Pelikan, Jan — 1-0 — Mar del Plata ARG
1959 — Rossetto, Hector vs Garcia Rodriguez, Raimundo — 0-1 — Quilmes
4…Nd7 — 7.7% (2068 parties)
1909 — Duz-Khotimirsky, Fedor Ivanovich vs Znosko-Borovsky, Eugene — 1-0 — St Petersburg RUS
1952 — Gruenfeld, Ernst vs Primavera, Giuseppe — 1-0 — Helsinki olm
1959 — Libal, Frantisek vs Pithart, Frantisek — 1/2-1/2 — Trebic
1961 — Ciocaltea, Victor vs Reicher, Emanoil-George — 1-0 — Romania
1961 — Radulov, Ivan vs Lloyd, Kenneth W — 1-0 — Helsinki FIN