B23b - 2…g6 - Closed (1947)

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B23b — Closed (1947)
1.e4 c5 2.Nc3 g6
Les coups candidats
3.f4 — 34.6% (3184 parties)
Ambassadeurs : Lyell, Mark (15x), Kayser, Felix (9x), Stokke, Kjetil (7x), Stewart, Ashley (7x), Trnovec, Mihaly (6x), Torres, Saulo De Jesus (6x), Bueno, Alfeu Junior Varela (6x), Valis, Janos (5x)
3.g3 — 33.6% (3091 parties)
Ambassadeurs : Parkanyi, Attila (11x), Bak, Istvan (8x), Rangel, Daniel (8x), Certek, Pavel (6x), Korbut, Ekaterina (6x), Tomcikova, Dominika (6x), Posch, Werner (5x), Heikkila, Antti (5x)
3.d4 — 10.9% (1001 parties)
Ambassadeurs : Lyell, Mark (9x), Guseinov, Gadir (9x), Maroroa Jones, Gawain C B (8x), Snape, Ian L (6x), Popov, Vladimir Valentinovich (5x), Loukopoulos, Panagiotis-Athanasi (5x), Abergel, Thal (4x), Biti, Ozren (4x)
3.Nf3 — 9.8% (905 parties)
Ambassadeurs : Nuber, Korbinian, Dr. (6x), Mitkov, Nikola (6x), Topalov, Veselin (5x), Svidler, Peter (3x), Hort, Vlastimil (2x), Pease, Ron J (2x), Rogers, Ian (2x), Polgar, Judit (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 3.f4 3.g3 3.d4 3.Nf3
<1800 1145 39% 30% 7% 9%
1800-2200 4931 38% 35% 10% 7%
2200-2600 2109 29% 30% 19% 14%
2600+ 36 17% 11% 22% 25%
Évolution par décennie (% des parties)
Décennie N parties 3.f4 3.g3 3.d4 3.Nf3
1950s 34 6% 47% 9% 9%
1960s 75 27% 44% 8% 12%
1970s 99 24% 52% 5% 10%
1980s 139 27% 41% 7% 18%
1990s 954 27% 48% 5% 8%
2000s 2353 34% 37% 8% 11%
2010s 4053 40% 31% 9% 9%
2020s 1506 28% 23% 26% 9%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
3.f4 40% 28% ▼ -11.6%
3.g3 31% 23% ▼ -7.3%
3.d4 9% 26% ▲ +17.2%
3.Nf3 9% 9% -0.4%
Joueurs célèbres
Champions du monde dans cette position
Hou, Yifan — 4 parties
Kramnik, Vladimir — 1 partie
Parties historiques
3.f4 — 34.6% (3184 parties)
1954 — Szabo, Stefan vs Pachman, Ludek — 0-1 — Bucharest ROU
1956 — Dreibergs, Leonid vs Bisguier, Arthur B — 0-1 — Detroit, MI USA
1960 — Zinn, Lothar vs Drimer, Dolfi — 0-1 — Leningrad RUS
1960 — Perez Alcocer, Jose vs Wexler, Bernardo — 0-1 — Sao Paulo zt
1960 — Pachman, Ludek vs Miguel, Nahuel — 1/2-1/2 — Leipzig olm
3.g3 — 33.6% (3091 parties)
1950 — Illgen, Hans vs Werner, Stephan — 1-0 — Bielefeld
1951 — Puc, Stojan vs Bertok, Mario Jr. — 1/2-1/2 — Sarajevo BIH
1953 — Bronstein, David I vs Keres, Paul Petrovich — 1-0 — Zurich SUI
1954 — Agustsson, Gudmundur vs Bosch van Rosenthal, Edzard — 1/2-1/2 — Amsterdam olm
1955 — Pinkus, Lutz vs Bisguier, Arthur B — 0-1 — New York, NY USA
3.d4 — 10.9% (1001 parties)
1952 — Grob, Henry vs Bronstein, David I — 0-1 — Helsinki olm
1953 — Joppen, Egon vs Heemsoth, Hermann — 1/2-1/2 — Berlin GER
1954 — Kandel, Adham vs Reicher, Emanoil-George — 0-1 — RUM ch sf
1961 — Florian, Jaromir vs Filip, Miroslav — 0-1 — Kosice
1963 — Pennycuick, David Bruce vs Williams, Robert Howard — 1-0 — Bognor Regis, Butlins
3.Nf3 — 9.8% (905 parties)
1955 — Ivkov, Borislav vs Pachman, Ludek — 1-0 — Buenos Aires ARG
1955 — Barta, Jan vs Sabata, Miroslav — 1-0 — Prague CZE
1956 — Herink, Miroslav vs Al Husari, Zita Fatima — 0-1 — Podebrady CZE
1960 — De Castro Rubio, Dora vs Efremoff, Taya — 1-0 — So Paulo
1962 — Hort, Vlastimil vs Kavalek, Lubomir — 1/2-1/2 — Jablonec