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A25b — Closed (1966)
1.c4 e5 2.Nc3 Nc6 3.e3
Les coups candidats
Ambassadeurs : Suba, Mihai (8x), Korchnoi, Viktor (7x), Miles, Anthony J (6x), Adamski, Jan (4x), Vilela De Acuna, Jose Luis (3x), Moehring, Guenther (3x), Nikolic, Predrag (3x), Kindermann, Stefan (3x)
3…g6 — 23.3% (343 parties)
Ambassadeurs : Suba, Mihai (5x), Badea, Bela (4x), Anelli, Antonio (2x), Paulsen, Dirk (2x), Krnic, Zdenko (2x), Adamski, Jan (2x), Aegerter, Martin (2x), Speelman, Jon S (2x)
3…f5 — 10.9% (160 parties)
Ambassadeurs : Moody, David W (3x), Kurajica, Bojan (3x), Dizdarevic, Emir (2x), Harasta, Vladimir (2x), San Claudio Gonzalez, Francisco Javier (2x), Jackson, Oliver A (2x), Brockway, Andrew (2x), Jakobi, Wilfried (2x)
3…d6 — 9.8% (144 parties)
Ambassadeurs : Jirka, Jiri (3x), Miles, Anthony J (2x), Conquest, Stuart C (2x), Liberzon, Vladimir M (2x), Dubinin, Peter (2x), Torre, Eugenio (2x), Donner, Jan-Hein (1x), Pachman, Ludek (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 3…Nf6 3…g6 3…f5 3…d6
<1800 143 40% 18% 11% 9%
1800-2200 520 44% 23% 15% 11%
2200-2600 525 46% 29% 9% 10%
2600+ 13 54% 15% 8% 8%
Évolution par décennie (% des parties)
Décennie N parties 3…Nf6 3…g6 3…f5 3…d6
1950s 3 67% — — 33%
1960s 11 27% 27% — 45%
1970s 50 48% 30% 2% 18%
1980s 104 41% 33% 9% 12%
1990s 231 46% 23% 12% 9%
2000s 358 45% 22% 11% 11%
2010s 529 48% 22% 11% 9%
2020s 186 45% 23% 13% 5%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
3…Nf6 48% 45% ▼ -3.2%
3…g6 22% 23% ▲ +1.4%
3…f5 11% 13% ▲ +2.7%
3…d6 9% 5% ▼ -3.5%
Joueurs célèbres
Champions du monde dans cette position
Kasparov, Garry — 1 partie
Ju, Wenjun — 1 partie
Parties historiques
3…Nf6 — 45.9% (676 parties)
1956 — Schroeder, Hannes vs Lieb, Harald — 0-1 — Hitzacker
1958 — Bak, Istvan vs Borloy, Karoly — 1-0 — Budapest HUN
1963 — Schallehn, Dieter vs Bauer, Erich — 1/2-1/2 — Leipzig GER
1968 — Korchnoi, Viktor vs Lehmann, Karl-Heinz — 1-0 — Palma de Majorca ESP
1968 — Korchnoi, Viktor vs Lehmann, Heinz — 1-0 — Palma de Majorca ESP
3…g6 — 23.3% (343 parties)
1966 — Tenorio, Arnoldo vs Gheorghiu, Florin — 0-1 — La Habana olm prel
1967 — Kushnir, Alla vs Ranniku, Maaja — 1/2-1/2 — Moscow RUS
1968 — Novopashin, Arkady vs Vaisser, Anatoli — 1-0 — ?
1970 — Korchnoi, Viktor vs Kovacevic, Vladimir — 1-0 — Rovinj/Zagreb YUG
1970 — Korchnoi, Viktor vs Kovacevic, Vlatko — 1-0 — Rovinj/Zagreb CRO
3…f5 — 10.9% (160 parties)
1976 — Dobosz, Henryk vs Chaves, Jaime Augusto — 1-0 — Caracas VEN
1981 — West, Guy vs Jackson, Oliver A — 0-1 — Manchester ENG
1981 — Wirthensohn, Heinz vs Hort, Vlastimil — 0-1 — Bad Kissingen GER
1982 — Dizdarevic, Emir vs Kurajica, Bojan — 0-1 — Sarajevo BIH
1982 — Dizdarevic, Emir vs Kurajica, Bojan — 0-1 — ?
3…d6 — 9.8% (144 parties)
1955 — Donner, Jan-Hein vs Pachman, Ludek — 0-1 — Rotterdam NED
1966 — Larsen, Ingrid vs Vreeken, Corry — 1/2-1/2 — Oberhausen
1968 — Platonov, Igor V vs Ivanenko, Bogdan — 1-0 — Kiev UKR
1968 — Abramson, Horacio vs Messere, Kenneth Charles — 1/2-1/2 — cr.
1969 — Korchnoi, Viktor vs Klovans, Janis — 1/2-1/2 — Leningrad RUS