B23s - 2…Nc6 3.f4 g6 - Closed, Grand Prix (1949)

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B23s — Closed, Grand Prix (1949)
1.e4 c5 2.Nc3 Nc6 3.f4 g6
Les coups candidats
4.Nf3 — 94.1% (19168 parties)
Ambassadeurs : Koronowski, Heinz-Juergen (48x), Fritsche, Frank (46x), Weeramantry, Sunil (38x), Boronyak, Arpad (38x), Chaves, Joara (36x), Erlbeck, Peter (34x), Dellenbach, Jean-Paul (33x), Horvath, Gabor (32x)
4.Bc4 — 2.4% (497 parties)
Ambassadeurs : Rabovszky, Gyorgy (11x), Schultz, Heide (9x), Falkowski, Dawid (6x), Dellenbach, Jean-Paul (5x), Ortegon Villacorte, Linda Daniela (4x), Karia, Rishul (4x), Lai, Antoine (3x), Ducarmon, Renzo (3x)
4.Bb5 — 1.8% (371 parties)
Ambassadeurs : Hofer, Rudolf (25x), Van der Veen, Jan (7x), Dunn, John (6x), Kumpulainen, Kalle (3x), Kupka, Slavoj (2x), Carmona Rosales, Jose Luis (2x), Bielawska, Magdalena (2x), Brhlik, Gyorgy (2x)
4.g3 — 1.0% (198 parties)
Ambassadeurs : Smolak, Ewa (15x), Burakovsky, Marat (6x), Nastase, Andreea-Cristina (3x), Haik, Aldo (2x), Hallmann, Norbert (2x), Trnovec, Mihaly (2x), Davidov, Samir (2x), Dague, Georges (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4.Nf3 4.Bc4 4.Bb5 4.g3
<1800 1729 90% 4% 3% 1%
1800-2200 10885 94% 3% 2% 1%
2200-2600 5144 97% 1% 1% 1%
2600+ 18 94% — 6% —
Évolution par décennie (% des parties)
Décennie N parties 4.Nf3 4.Bc4 4.Bb5 4.g3
1950s 27 89% 7% — 4%
1960s 157 91% — 4% 2%
1970s 272 96% 3% — —
1980s 526 95% 2% 1% 2%
1990s 3690 95% 3% 1% 1%
2000s 6824 94% 3% 1% 1%
2010s 6993 94% 2% 3% 1%
2020s 1873 94% 2% 3% 1%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4.Nf3 94% 94% +0.2%
4.Bc4 2% 2% ▼ -0.5%
4.Bb5 3% 3% -0.0%
4.g3 1% 1% +0.3%
Joueurs célèbres
Champions du monde dans cette position
Hou, Yifan — 3 parties
Tal, Mikhail — 2 parties
Anand, Viswanathan — 2 parties
Gukesh D — 2 parties
Kramnik, Vladimir — 1 partie
Botvinnik, Mikhail — 1 partie
Carlsen, Magnus — 1 partie
Parties historiques
4.Nf3 — 94.1% (19168 parties)
1952 — Roethel, Michel vs Rometti, Nicola Barbatto — 0-1 — Charleville Mezieres
1953 — Raetsch, Heinz vs Muehlberg, Siegfried — 0-1 — Brandenburg/Havel
1953 — Wiese, Klaus Peter vs Kuppe, Wilhelm — 1-0 — Leipzig GER
1953 — Bronstein, David I vs Furman, Semyon — 1-0 — Moscow RUS
1954 — Herter, Eberhard vs Wolk, Sigmund — 0-1 — Stuttgart GER
4.Bc4 — 2.4% (497 parties)
1950 — Poulsen, Christian vs Rapaka Samuel Paul — 0-1 — Dubrovnik olm
1952 — Poulsen, Christian vs Partyka, Kazimierz — 1/2-1/2 — Helsinki olm
1970 — Gordon Noel Pires vs Chaikovskaja, Alla — 1-0 — Leningrad RUS
1972 — Van Geet, Dirk Daniel vs Kraidman, Yair — 1/2-1/2 — Amsterdam NED
1973 — Gilmore, D. vs Dodson, Harmony — 1-0 — Dayton 500 miniatur
4.Bb5 — 1.8% (371 parties)
1963 — Gaprindashvili, Nona vs Blagidze, Alexander — 1-0 — USSR
1964 — Kupka, Slavoj vs Hýbl, Jaroslav — 0-1 — Brno CZE
1965 — Kupka, Slavoj vs Plachetka, Jan — 1/2-1/2 — Harrachov
1965 — Cheng, Winter vs Scholz, Jutta — 1-0 — Annaberg-Buchholz
1966 — Carmona Rosales, Jose Luis vs Bolbochan, Julio — 1/2-1/2 — Rio Hondo zt
4.g3 — 1.0% (198 parties)
1959 — Hennings, Artur vs Kuettner, Uwe — 0-1 — Boehlen
1961 — Havansi, Erkki E.T. vs Jansa, Vlastimil — 0-1 — Helsinki FIN
1967 — Grefe, John A vs Blackstone, John — 0-1 — Santa Monica, CA USA
1968 — Dague, Georges vs Dubois, Robert — 0-1 — ?
1980 — Demian, Valer-Vasile vs Volchok, Alexandr — 1-0 — ICCF