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A25j — Closed (1956)
1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2
Les coups candidats
Ambassadeurs : Hort, Vlastimil (34x), Jussupow, Artur (31x), Cvetkovic, Srdjan (28x), Korchnoi, Viktor (27x), Browne, Walter Shawn (27x), Taimanov, Mark (25x), ? (21x), Lanzani, Paolo (20x)
4…d6 — 2.1% (291 parties)
Ambassadeurs : Liepold, Stefan (9x), Alekseenko, Kirill (6x), Hlousek, Zdenek (5x), Huguet, Francois (4x), Aegerter, Martin (3x), Starostits, Ilmars (3x), Pachman, Ludek (2x), Plante, Jacques (2x)
4…Nge7 — 0.5% (72 parties)
Ambassadeurs : Bugalski, Michal (2x), Becker, Allen (2x), Beggi, Pierluigi (1x), Castaldi, Vincenzo (1x), Tossas, J. (1x), Welsh, Alan (1x), Seruga, Stefan (1x), Tevz (1x)
4…f5 — 0.2% (23 parties)
Ambassadeurs : Rudenko, Aleksandr Vladimiro (4x), Perovic, Dragan (2x), Gerhold, Michael (2x), Garcia Padron, Jose (1x), Browne, Walter Shawn (1x), Waterman, Dennis (1x), Evans, Larry (1x), Ljubojevic, Ljubomir (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…Bg7 4…d6 4…Nge7 4…f5
<1800 615 97% 2% 1% 0%
1800-2200 5512 97% 2% 1% 0%
2200-2600 5785 98% 2% 0% 0%
2600+ 203 96% 4% 0%
Évolution par décennie (% des parties)
Décennie N parties 4…Bg7 4…d6 4…Nge7 4…f5
1950s 74 97% 3%
1960s 315 96% 4% 1%
1970s 488 95% 5% 0%
1980s 1048 97% 3% 0%
1990s 3027 98% 2% 1% 0%
2000s 3982 97% 2% 0% 0%
2010s 4202 97% 2% 1% 0%
2020s 891 97% 2% 1%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…Bg7 97% 97% +0.1%
4…d6 2% 2% +0.3%
4…Nge7 1% 1% -0.2%
4…f5 0% 0% -0.2%
Joueurs célèbres
Champions du monde dans cette position
Kasparov, Garry — 10 parties
Karpov, Anatoly — 10 parties
Tal, Mikhail — 7 parties
Anand, Viswanathan — 5 parties
Smyslov, Vladimir — 3 parties
Botvinnik, Mikhail — 2 parties
Kramnik, Vladimir — 2 parties
Ju, Wenjun — 2 parties
Ding, Liren — 2 parties
Gukesh D — 2 parties
Parties historiques
4…Bg7 — 97.1% (13617 parties)
1950 — Filip, Miroslav vs Maltsev Aleksandre — 1-0 — CSR-BUL Prague CZE
1950 — Piskov, Kamen Penev vs Bobotsov, Milko G — 0-1 — Sofia BUL
1950 — Shamkovich, Leonid vs Rovner, Dmitry — 1/2-1/2 — URS-ch sf Tartu
1950 — Mikenas, Vladas vs Bannik, Anatolij — 0-1 — URS-ch sf Tartu
1950 — Filipov, Filip vs Bobekov, Radko — 0-1 — Sofia BUL
4…d6 — 2.1% (291 parties)
1956 — Sliwa, Bogdan vs Pachman, Ludek — 1-0 — Dresden GER
1956 — Parak, Frantisek vs Pachman, Ludek — 1/2-1/2 — Marianske Lazne
1962 — Kavalek, Lubomir vs Trapl, Jindrich — 1-0 — Jablonec
1967 — Panov, Vladimir vs Bukic, Enver — 1/2-1/2 — Skopje MKD
1968 — Smyslov, Vasily vs Ungureanu, Emil — 1-0 — Lugano SUI
4…Nge7 — 0.5% (72 parties)
1963 — Beggi, Pierluigi vs Castaldi, Vincenzo — 1-0 — Reggio Emilia ITA
1968 — Tossas, J. vs Welsh, Alan — 1-0 — Santa Monica, CA USA
1988 — Seruga, Stefan vs Tevz — 1-0 — corr Yugoslavia
1992 — Ramon Pita, Vivian vs Garcia , Andy — 1/2-1/2 — Havana CUB
1993 — Petersen, Thomas vs Schweitzer, Michael, Dr. — 1/2-1/2 — Zell
4…f5 — 0.2% (23 parties)
1971 — Waterman, Dennis vs Evans, Larry — 0-1 — Lone Pine, CA USA
1977 — Garcia Padron, Jose vs Browne, Walter Shawn — 0-1 — Las Palmas ESP
1990 — Ljubojevic, Ljubomir vs Seirawan, Yasser — 1/2-1/2 — Novi Sad olm
1990 — Petursson, Margeir vs Perovic, Dragan — 1-0 — Vienna AUT
1991 — Bakker, Joshua vs Bronstein, David I — 0-1 — Houten,OKU