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A31c — Symmetrical, Two Knights (1928)
1.c4 c5 2.Nf3 Nf6 3.d4 g6
Les coups candidats
Ambassadeurs : Arias Hernandez, Scarlett Terry (10x), Kovacs, Arthur Dr. (10x), Nemet, Ivan (8x), Eberth, Zoltan Bela (8x), Skembris, Spyridon (6x), Kountz, Jochen (6x), Damljanovic, Branko (6x), Wegner, Hannu (5x)
Ambassadeurs : Clares Huanca, Danner Saed (11x), Huss, Andreas (9x), Lumsdon, Andrew (9x), Perez Gonzalez, Jose Manuel (8x), Kahl, Fred (7x), Frank, Jozsef (5x), Solcanean, Serghei (5x), Mohammad, Fahim (5x)
4.g3 — 10.5% (958 parties)
Ambassadeurs : Honsch, Pal (4x), Hausner, Ivan (4x), Schmidt, Loren R (3x), Borovikov, Vladislav (3x), Damjanovic, Mato (2x), Webb, Simon (2x), Krueckeberg, Bernd (2x), Cabrilo, Goran (2x)
4.e3 — 7.2% (662 parties)
Ambassadeurs : Berberich, Christoph (6x), Czernicki, Bogdan (5x), Olsen, Heini (4x), Mok, Tze-Meng (3x), Kaenel, Hansjuerg (3x), Colpe, Helge (3x), Pallesen, Jacob (3x), Finegold, Benjamin (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4.Nc3 4.d5 4.g3 4.e3
<1800 676 44% 27% 9% 13%
1800-2200 4491 49% 29% 11% 8%
2200-2600 2618 55% 30% 11% 3%
2600+ 20 45% 25% 30% —
Évolution par décennie (% des parties)
Décennie N parties 4.Nc3 4.d5 4.g3 4.e3
1950s 34 65% 18% 15% —
1960s 95 59% 23% 16% 1%
1970s 255 64% 17% 16% 3%
1980s 443 56% 24% 11% 7%
1990s 2070 52% 29% 10% 6%
2000s 2771 52% 29% 9% 8%
2010s 2957 48% 29% 11% 8%
2020s 528 44% 34% 12% 6%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4.Nc3 48% 44% ▼ -4.5%
4.d5 29% 34% ▲ +5.1%
4.g3 11% 12% ▲ +1.5%
4.e3 8% 6% ▼ -2.4%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Anatoly — 2 parties
Kasparov, Garry — 1 partie
Ju, Wenjun — 1 partie
Parties historiques
4.Nc3 — 51.0% (4667 parties)
1951 — Rabar, Braslav vs Trifunovic, Petar — 1/2-1/2 — Ljubljana
1951 — Wade, Robert G vs Czerniak, Moshe — 0-1 — Reggio Emilia ITA
1953 — Newman, Richard vs Barden, Leonard — 0-1 — Hastings ENG
1954 — Chistiakov, Alexander vs Suetin, Alexey S — 0-1 — Riga LAT
1954 — Bannik, Anatolij vs Tarasov, Vitaly — 1-0 — Erevan ARM
4.d5 — 28.5% (2613 parties)
1952 — Litmanowicz, Wladyslaw vs Witkowski, Stefan — 1-0 — Katowice POL
1952 — Rapaka Samuel Paul vs Czerniak, Moshe — 1-0 — Helsinki olm
1952 — Pietzsch, Wolfgang vs Kretschmer, Max — 1-0 — Zittau
1953 — Shamkovich, Leonid vs Rozenfeld, Isai — 1-0 — Leningrad RUS
1959 — Faleg, Alberto vs Wexler, Bernardo — 1-0 — Buenos Aires ARG
4.g3 — 10.5% (958 parties)
1955 — Bonham, Reginald W vs Barden, Leonard — 0-1 — Aberystwyth ch-BCF
1956 — Bratoszewski, Jerzy vs Ujtelky, Maximilian — 0-1 — Warsaw POL
1957 — Olafsson, Thorir vs Dinsen, Carl Krarup — 1-0 — Reykjavik ISL
1958 — Estrada, Vicente vs Posada, Jorge M — 0-1 — Pereira
1959 — Pomar Salamanca, Arturo vs Puig, Pedro — 1-0 — Madrid ESP
4.e3 — 7.2% (662 parties)
1966 — Martinez, Gustavo vs Schweber, Samuel — 1/2-1/2 — Havana CUB
1970 — Apostolopoulos, Dimitrios vs Georgiou, Iraklis — 0-1 — Athens GRE
1971 — Cox, David vs De Villiers, Charles — 0-1 — Athens GRE
1972 — Rajher, Jerko vs Finta, Erzsebet — 0-1 — HUN
1973 — Zavodny, Zdenek vs Machacek, Petr — 0-1 — Gargulakuv mem