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B53d — Chekhover Variation (1955)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Qxd4
Les coups candidats
Ambassadeurs : Rodríguez Pérez, René (66x), Hlavac, Rudolf (46x), Paichadze, Luka (45x), Rodriguez, Raul (36x), Lauer, Frederic (29x), Yandemirov, Valeri (26x), Vasiukov, Evgeni (23x), ? (22x)
Ambassadeurs : Rozentalis, Eduardas (17x), Hlavac, Rudolf (17x), De Gleria, Francesco (14x), Ciric, Dragoljub M (13x), Grund, Holger (13x), Zelcic, Robert (13x), Vetemaa, Juri (12x), Belikov, Vladimir (11x)
Ambassadeurs : Paichadze, Luka (22x), Rodriguez Perez, Rene (16x), Alekseev, Evgeny (15x), Rodríguez Pérez, René (15x), Rodriguez, Raul (11x), Kacharava, Nikolozi (10x), Zhigalko, Sergei (10x), Roeder, Matthias (8x)
Ambassadeurs : Hlavac, Rudolf (10x), Damaso, Rui (7x), Vasiukov, Evgeni (7x), Vetemaa, Juri (6x), Groszpeter, Attila (6x), Kohlweyer, Bernd (6x), Kyc, Jerzy (6x), ? (5x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…Nc6 4…a6 4…Nf6 4…Bd7
<1800 1589 72% 15% 6% 4%
1800-2200 10340 65% 21% 6% 6%
2200-2600 9460 55% 28% 10% 6%
2600+ 353 44% 20% 33% 3%
Évolution par décennie (% des parties)
Décennie N parties 4…Nc6 4…a6 4…Nf6 4…Bd7
1950s 102 76% 7% 6% 10%
1960s 161 63% 9% 4% 22%
1970s 588 46% 31% 2% 21%
1980s 871 63% 25% 2% 8%
1990s 3793 61% 25% 3% 9%
2000s 5984 64% 24% 3% 7%
2010s 8768 61% 25% 7% 5%
2020s 3857 63% 11% 22% 2%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…Nc6 61% 63% ▲ +2.9%
4…a6 25% 11% ▼ -14.0%
4…Nf6 7% 22% ▲ +15.2%
4…Bd7 5% 2% ▼ -3.0%
Joueurs célèbres
Champions du monde dans cette position
Hou, Yifan — 10 parties
Ju, Wenjun — 10 parties
Tal, Mikhail — 9 parties
Carlsen, Magnus — 9 parties
Karpov, Anatoly — 8 parties
Anand, Viswanathan — 7 parties
Kasparov, Garry — 6 parties
Gukesh D — 1 partie
Ding, Liren — 1 partie
Parties historiques
4…Nc6 — 61.7% (14875 parties)
1950 — Leepin, Peter vs Johner, Hans — 1/2-1/2 — Lucerne SUI
1950 — Szabo, Laszlo vs Kotov, Alexander — 1-0 — Budapest HUN
1950 — Nezhmetdinov, Rashid vs Ilivitsky, Georgy A — 0-1 — Tseboksary
1950 — Paoli, Enrico vs Eugenio, Sarah De Oliveira — 1/2-1/2 — Venice ITA
1951 — Hostinsky, Zdenek vs Ujtelky, Maximilian — 1-0 — Marianske Lazne
4…a6 — 22.6% (5455 parties)
1950 — Popov, Vesselin vs Milev, Zdravko — 0-1 — Sofia BUL
1951 — Urseanu, Veniamin vs Molnar, Imre — 0-1 — Bucharest ROU
1952 — Dantas, Nelson vs Eidelman, Mauricio — 1/2-1/2 — Rio de Janeiro BRA
1954 — Mengarini, Ariel vs Evans, Larry — 0-1 — New York ch-USA
1955 — Redolfi, Argentino Rodolfo vs Miguel, Nahuel — 0-1 — Buenos Aires ARG
4…Nf6 — 7.7% (1849 parties)
1951 — Bialas, Wolfram vs Malich, Burkhard, Dr. — 0-1 — Leipzig GER
1954 — Robatsch, Karl vs Larsen, Bent Ravn — 1/2-1/2 — Amsterdam olm
1956 — Olafsson, Fridrik vs Larsen, Bent Ravn — 1/2-1/2 — Oslo NOR
1956 — Szabo, Laszlo vs Larsen, Bent Ravn — 0-1 — Hastings ENG
1956 — Maderna, Carlos vs Shocron, Ruben — 1/2-1/2 — Mar del Plata ARG
4…Bd7 — 6.0% (1459 parties)
1952 — Dantas, Nelson vs Eliskases, Erich — 0-1 — Rio de Janeiro BRA
1955 — Molnar, Francois vs Rosenberg, Sergei G — 1-0 — Paris FRA
1955 — Portisch, Lajos vs Florian, Tibor — 1-0 — Hungary ch
1956 — Stoliar, Efim Samoilovich vs Spassky, Boris V. — 1/2-1/2 — Leningrad RUS
1956 — Robatsch, Karl vs Flores Alvarez, Rodrigo — 1-0 — Moscow olm fin-B