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B23o — Closed Grand Prix
1.e4 c5 2.Nc3 Nc6 3.f4 d6
Eval: [-0.07]
Les coups candidats
4.Nf3 — 79.0% (8409 parties)
Ambassadeurs : Mitkov, Nikola (24x), Alaimo, Riccardo (15x), Vicas, Marijus (13x), Niebling, Ferdinand (12x), Horvath, Gabor (12x), Weeramantry, Sunil (12x), Podlesnik, Bogdan (12x), Boronyak, Arpad (11x)
4.Bb5 — 12.1% (1283 parties)
Ambassadeurs : Chaves, Joara (14x), Haanpaa, Jorma (9x), Skidmore, Jennifer M (9x), Meinke, Dietlind (9x), Petzold, Hans, Prof. Dr. (9x), Bhat, Vinay (6x), Duric, Rajko (6x), Mikalsen, Odd Erling (5x)
4.Bc4 — 6.4% (678 parties)
Ambassadeurs : Deus Filho, Joaquim de (5x), Jiruse, Jaroslav (5x), Gaudineau, Eric (3x), Gueth, Andreas (3x), Martinez, M Catalino (3x), Wolf, Stefan (3x), Trnovec, Mihaly (3x), Zimmer, Frank (3x)
4.g3 — 1.3% (135 parties)
Ambassadeurs : Hanke, Leonhard (3x), Otman, Viktor (2x), Smolak, Ewa (2x), Vaseliuk, Elena (2x), Burakovsky, Marat (2x), Ohayv, Nikolaj (2x), Zima, Tomas (2x), Nemeth, Henrique Jr (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4.Nf3 4.Bb5 4.Bc4 4.g3
<1800 731 73% 16% 8% 1%
1800-2200 4927 79% 12% 7% 1%
2200-2600 2277 86% 9% 3% 1%
2600+ 50 92% 4% 2%
Évolution par décennie (% des parties)
Décennie N parties 4.Nf3 4.Bb5 4.Bc4 4.g3
1930s 1 100%
1940s 5 80% 20%
1950s 17 71% 24% 6%
1960s 80 59% 38% 1% 1%
1970s 161 75% 17% 6% 1%
1980s 218 77% 13% 6% 1%
1990s 2057 80% 9% 8% 2%
2000s 3771 80% 10% 7% 2%
2010s 3795 78% 15% 5% 1%
2020s 533 82% 13% 4% 0%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4.Nf3 78% 82% ▲ +4.0%
4.Bb5 15% 13% ▼ -1.5%
4.Bc4 5% 4% ▼ -1.4%
4.g3 1% 0% ▼ -0.6%
Joueurs célèbres
Champions du monde dans cette position
Anand, Viswanathan — 4 parties
Carlsen, Magnus — 3 parties
Smyslov, Vladimir — 1 partie
Kasparov, Garry — 1 partie
Ju, Wenjun — 1 partie
Parties historiques
4.Nf3 — 79.0% (8409 parties)
1936 — Panov, Vasily vs Chekhover, Vitaly — 0-1 — Trade Unions
1946 — Bernstein, Olivia vs Golombek, Harry — 1/2-1/2 — London ENG
1947 — Bogoljubow, Efim vs Menke, Gerhard — 1-0 — Nt Lueneburg GER
1948 — Buonpane vs Del Pezzo — 1/2-1/2 — Caserta
1949 — Belmont, Daniel M vs Hendricks, Wade — 1-0 — Berkeley, CA
4.Bb5 — 12.1% (1283 parties)
1953 — Herter Reyes, Aaron vs Gauss, Andreas — 1-0 — Kirchheim
1956 — Hostinsky, Zdenek vs Dobias, Josef — 1/2-1/2 — Chomutov
1959 — Zinn, Lothar vs Filipowicz, Andrzej — 1-0 — Magdeburg GER
1959 — Albulet, Maria vs Todorova, Paunka — 1-0 — Plovdiv BUL
1960 — Zinn, Lothar vs Van Humbeek — 1-0 — Leningrad RUS
4.Bc4 — 6.4% (678 parties)
1949 — Poulsen, Christian vs Hage, Poul — 1-0 — Copenhagen DEN
1951 — Poulsen, Christian vs Pedersen, Eigil — 1/2-1/2 — dkch 51
1969 — Mossong, Hubert vs Nemlioglu, Ahmet Fahri — 1-0 — Groningen NED
1971 — Nowarra, Waltraud vs Janssen, Lieselotte — 1/2-1/2 — Strasbourg ch20-DDR
1972 — Pokorny, Jiri vs Lemmetty, Martti — 1-0 — Pula CRO
4.g3 — 1.3% (135 parties)
1961 — Rinder, Elfriede vs Konarkowska-Sokolov, Henrijeta — 1/2-1/2 — Vrnjacka Banja SRB
1979 — Keogh, Eamon vs Smyth, Michael — 1-0 — Dublin IRL
1980 — Mcgrath, Sean vs Brodie, Hugh — 0-1 — Burlington VT
1981 — Day, Lawrence A. vs Reeve, Jeff — 0-1 — Western Canadian Ope
1991 — Otman, Viktor vs Savon, Vladimir — 1/2-1/2 — Moscow RUS