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B23j — Closed, Korchnoi Defense (1904)
1.e4 c5 2.Nc3 e6 3.g3 d5
Les coups candidats
4.exd5 — 56.5% (2673 parties)
Ambassadeurs : Costa, Fernando J.M. (8x), Pacey, Kevin (8x), Dormann, Lars (7x), Parkanyi, Attila (7x), Buecker, Stefan (6x), Jurkovic, Hrvoje (6x), Borngaesser, Rene (6x), Beranger, Paul (5x)
4.Bg2 — 21.3% (1010 parties)
Ambassadeurs : Bartsch, Berthold (15x), Bastian, Herbert (11x), Welz, Peter, Dr. (7x), Bastian, Martin (5x), Van Voorthuijsen, Peewee (4x), Keskinen, Sauli (4x), Piersig, Klaus (4x), Abramovic, Bosko (3x)
4.d3 — 20.9% (991 parties)
Ambassadeurs : Liljedahl, Lennart (6x), Abramovic, Bosko (5x), Whitehead, Mark A (5x), Kulhanek, Tomas (5x), Modr, Bretislav (4x), Casper, Thomas (4x), Tal, Mikhail (4x), Vratonjic, Slobo (4x)
4.e5 — 0.9% (41 parties)
Ambassadeurs : Tarachowicz, Alina (2x), Swol, G. van (1x), Boll, Peter (1x), Vives Rodriguez, David Alberto (1x), Folch Sampera, Enric (1x), Gkotski, A. (1x), Gulati, Ashish (1x), Ho, Andrew (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4.exd5 4.Bg2 4.d3 4.e5
<1800 309 57% 19% 19% 4%
1800-2200 2320 58% 20% 21% 1%
2200-2600 1452 54% 23% 23% 0%
2600+ 10 40% 40% 20%
Évolution par décennie (% des parties)
Décennie N parties 4.exd5 4.Bg2 4.d3 4.e5
1950s 4 50% 25% 25%
1960s 32 53% 28% 19%
1970s 131 46% 24% 29% 1%
1980s 297 48% 31% 21%
1990s 1077 59% 21% 18% 1%
2000s 1663 59% 18% 22% 1%
2010s 1179 55% 22% 21% 1%
2020s 349 52% 28% 19% 0%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4.exd5 55% 52% ▼ -3.0%
4.Bg2 22% 28% ▲ +6.0%
4.d3 21% 19% ▼ -2.7%
4.e5 1% 0% ▼ -0.6%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 8 parties
Kasparov, Garry — 2 parties
Kramnik, Vladimir — 1 partie
Parties historiques
4.exd5 — 56.5% (2673 parties)
1953 — Cruz, Walter vs Tavares da Silva, Luiz — 1-0 — Rio de Janeiro BRA
1955 — Broden, Per vs Ciric, Dragoljub M — 0-1 — Antwerp BEL
1960 — Fauconnier, Clement vs Soler Gonzalez, Juan Fernando — 1-0 — Leipzig GER
1964 — Leuza Garcia, Jose vs Franco Raymundo, Eduardo — 0-1 — Las Palmas ESP
1965 — Taimanov, Mark vs Polugaevsky, Lev — 1/2-1/2 — Tallinn ch-URS
4.Bg2 — 21.3% (1010 parties)
1956 — Hacsak, Istvan vs Szekely, Peter — 1-0 — Debrecen HUN
1960 — Janosevic, Dragoljub vs Kozomara, Vlado — 1-0 — Ljubljana
1966 — Fernandez, Ruben vs Tapia, Hugo — 1-0 — Buenos Aires ARG
1968 — Aspstrom, Yngve vs Lekander, Rolf — 0-1 — Halmstad
1968 — Barboza, Mauro vs Estrada Degrandi, Walter — 1-0 — Uruguay
4.d3 — 20.9% (991 parties)
1955 — Ljungquist, Lennart vs Suetin, Alexey S — 0-1 — Lyon FRA
1965 — Machacek, Petr vs Opocensky, Karel — 1/2-1/2 — Pardubice CZE
1966 — Zichichi, Alvise vs Ribeiro, Joao — 1/2-1/2 — La Habana olm fin-C
1967 — Amann, David vs Meyer, John — 0-1 — Atlanta
1968 — Griffiths, Robert vs Kokkoris, Hristos — 0-1 — Lugano SUI
4.e5 — 0.9% (41 parties)
1978 — Swol, G. van vs Boll, Peter — 0-1 — NLD-BV/78-24
1991 — Tarachowicz, Alina vs Wagenschuetz, Evelyn — 1-0 — Mamaia
1992 — Tarachowicz, Alina vs Gkotski, A. — 1-0 — Rimavska Sobota SVK
1992 — Kusec, Stjepan vs Medak, Jasnica — 1-0 — Pula CRO
1996 — Vives Rodriguez, David Alberto vs Folch Sampera, Enric — 1/2-1/2 — Femeni