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B23n — Closed, Chameleon Variation (1904)
1.e4 c5 2.Nc3 Nc6 3.Nge2
Les coups candidats
Ambassadeurs : Westerinen, Heikki M.J. (21x), Huber, Gregory (21x), Popov, Vladimir Valentinovich (17x), Soltis, Andrew (15x), De Heer, Machiel (12x), Galdunts, Sergey (12x), Knoppert, Erik (11x), Kadric, Denis (11x)
3…Nf6 — 22.6% (2447 parties)
Ambassadeurs : Nekhaev, Andrey Ivanovich (36x), Popov, Vladimir Valentinovich (18x), Vallejo Pons, Francisco (12x), Pekin, Tolgay (10x), Galdunts, Sergey (9x), Tassone, Raffaele (9x), Volodarsky, Yury Aleksandrovich (9x), Fremmegaard, Jens Tore (9x)
3…d6 — 18.0% (1952 parties)
Ambassadeurs : Franzoni, Giancarlo (14x), Soltis, Andrew (11x), Kadric, Denis (11x), Zhelnin, Vladimir V (10x), Berzinsh, Roland (8x), Velickovic, Sasa (8x), Schoeneberg, Manfred (7x), Westerinen, Heikki M.J. (7x)
3…e6 — 17.0% (1845 parties)
Ambassadeurs : Kontic, Djordjije (14x), Jansa, Vlastimil (11x), Franzoni, Giancarlo (10x), Hort, Vlastimil (9x), Zhong, Kevin (9x), Hennings, Artur (8x), Soltis, Andrew (8x), Bodnaruk, Anastasia (8x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 3…g6 3…Nf6 3…d6 3…e6
<1800 430 36% 21% 13% 20%
1800-2200 3772 35% 23% 15% 17%
2200-2600 5447 28% 23% 20% 17%
2600+ 113 27% 32% 12% 14%
Évolution par décennie (% des parties)
Décennie N parties 3…g6 3…Nf6 3…d6 3…e6
1950s 69 36% 30% 20% 7%
1960s 223 30% 14% 29% 17%
1970s 207 29% 15% 23% 24%
1980s 477 23% 16% 25% 24%
1990s 2545 32% 18% 22% 18%
2000s 2628 29% 22% 19% 19%
2010s 3155 32% 26% 14% 16%
2020s 1535 33% 28% 12% 12%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
3…g6 32% 33% ▲ +1.0%
3…Nf6 26% 28% ▲ +1.3%
3…d6 14% 12% ▼ -1.6%
3…e6 16% 12% ▼ -4.7%
Joueurs célèbres
Champions du monde dans cette position
Kasparov, Garry — 10 parties
Kramnik, Vladimir — 7 parties
Anand, Viswanathan — 5 parties
Hou, Yifan — 5 parties
Karpov, Anatoly — 1 partie
Carlsen, Magnus — 1 partie
Ding, Liren — 1 partie
Parties historiques
3…g6 — 31.1% (3367 parties)
1950 — Keres, Paul Petrovich vs Averbakh, Yuri L — 1/2-1/2 — Szcawno Zdroj
1951 — Pachman, Ludek vs Barda, Olaf — 1-0 — Marianske Lazne zt
1952 — Fichtl, Jiri vs Sajtar, Jaroslav — 1-0 — Tatranska ch CZE
1953 — Matanovic, Aleksandar vs Dimc, Dragutin — 1-0 — Zagreb CRO
1953 — Barda, Yngvar vs Petri, Bernd — 0-1 — Copenhagen DEN
3…Nf6 — 22.6% (2447 parties)
1950 — Gonsior, Evzen vs Ampaire Shivan Kaliri — 1-0 — ?
1951 — Kalkstein, Rodolfo vs Bauza, Lorenzo — 0-1 — San Rafael
1953 — Fichtl, Jiri vs Opocensky, Karel — 1-0 — Prague CZE
1954 — Keres, Paul vs Darga, Klaus — 1-0 — 11th Olympiad final A
1954 — Gurgenidze, Bukhuti vs Kotov, Alexander — 0-1 — URS-ch 1L Erevan ARM
3…d6 — 18.0% (1952 parties)
1950 — Bogoljubow, Efim vs Abhay Sheshrao Thorat — 1-0 — Southsea
1950 — Madsen, Erik vs Terkelsen, Frode — 1-0 — Rodovre
1951 — Keres, Paul Petrovich vs Bondarevsky, Igor — 1/2-1/2 — Ch URS, Moscow RUS
1953 — Fichtl, Jiri vs Brat, Vaclaw — 1-0 — Prague CZE
1953 — Vesely, Jiri vs Sajtar, Jaroslav — 1/2-1/2 — Prague CZE
3…e6 — 17.0% (1845 parties)
1950 — Madsen, Sami vs Napolitano, Matteo — 0-1 — corr Wch1
1955 — Betak Miroslav vs Sabata, Mmoledi — 1-0 — Prague CZE
1956 — Schmid Michael vs Butenschon Fritz — 0-1 — ?
1957 — Kopriva, Jiri vs Klir, Jaroslav — 1/2-1/2 — Brno CZE
1959 — Pachman, Ludek vs Letelier Martner, Rene — 1-0 — Santiago CHI