A31g - 3…cxd4 4.Nxd4 - Symmetrical, Two Knights (1929)

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A31g — Symmetrical, Two Knights (1929)
1.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4
Les coups candidats
Ambassadeurs : Bellon Lopez, Juan Manuel (17x), Raetsky, Alexander (16x), Burnett, Jim (12x), Lesiege, Alexandre (11x), Hausner, Ivan (9x), Rogers, Ian (8x), Hebden, Mark L (7x), Nedobora, Mikhail (7x)
Ambassadeurs : Matulovic, Milan (8x), Gheorghiu, Florin (8x), Geller, Efim P. (6x), Vasiukov, Evgeni (5x), Browne, Walter Shawn (5x), Berry, Jonathan (5x), Bagirov, Vladimir (5x), Sandor, Christian, Dr. (5x)
Ambassadeurs : Rashkovsky, Nukhim N (18x), Quinteros, Miguel A. (17x), Alburt, Lev (14x), Van Riemsdijk, Herman C. (12x), Adamski, Jan (11x), Knaak, Rainer (10x), Doda, Zbigniew (10x), Gheorghiu, Florin (10x)
Ambassadeurs : Gheorghiu, Florin (8x), Debarnot, Roberto (6x), Kratochvil, Josef (6x), Sergeev, Vladimir (6x), Rooze, Jan (6x), Japiassu, Ricardo De Villa Nova (6x), Hausner, Ivan (6x), Psakhis, Lev (5x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…e5 4…Nc6 4…e6 4…b6
<1800 790 36% 29% 10% 4%
1800-2200 6378 38% 26% 11% 8%
2200-2600 6394 35% 19% 19% 15%
2600+ 207 13% 34% 33% 7%
Évolution par décennie (% des parties)
Décennie N parties 4…e5 4…Nc6 4…e6 4…b6
1950s 111 5% 38% 32% 3%
1960s 202 3% 40% 34% 4%
1970s 789 7% 21% 45% 10%
1980s 1239 35% 13% 27% 14%
1990s 3020 42% 18% 15% 10%
2000s 4381 39% 22% 12% 10%
2010s 5201 35% 27% 11% 11%
2020s 1093 33% 32% 13% 8%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…e5 35% 33% ▼ -1.4%
4…Nc6 27% 32% ▲ +4.9%
4…e6 11% 13% ▲ +1.2%
4…b6 11% 8% ▼ -3.3%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 10 parties
Kasparov, Garry — 10 parties
Carlsen, Magnus — 8 parties
Kramnik, Vladimir — 6 parties
Karpov, Anatoly — 5 parties
Hou, Yifan — 5 parties
Ju, Wenjun — 5 parties
Smyslov, Vladimir — 2 parties
Anand, Viswanathan — 2 parties
Botvinnik, Mikhail — 1 partie
Parties historiques
4…e5 — 35.4% (5677 parties)
1954 — Scherbakoff, Georges vs Czerniak, Moshe — 1/2-1/2 — Paris FRA
1954 — Rabar, Braslav vs Czerniak, Moshe — 0-1 — Belgrade SRB
1955 — Minev, Nikolay N vs Udovcic, Mijo — 1/2-1/2 — Zagreb CRO
1955 — Lombardy, William J vs Kevitz, Alexander — 1/2-1/2 — New York, NY USA
1959 — Fazekas, Stephan vs Aabel Thomas Eapen — 1/2-1/2 — York ch-BCF
4…Nc6 — 23.2% (3713 parties)
1950 — Alatortsev, Vladimir N. vs Kopilov, Nikolay Georgiyevich — 1-0 — Leningrad RUS
1952 — Zalys, Ignas vs Therien, Jules — 1-0 — Montreal CAN
1952 — Pachman, Ludek vs Kubelka, Jaroslav — 0-1 — sim Prague
1952 — Veltmander, Iogannes vs Kan, Ilya A — 0-1 — Riga LAT
1952 — Werner, Stephan vs Hellwig, Hannah M — 1/2-1/2 — Guetersloh
4…e6 — 15.7% (2511 parties)
1950 — Hogenauer, N.J vs Muir, Walter G — 0-1 — Golden Knights 5051
1950 — Werner, Stephan vs Osterwald, Karl Heinz — 1-0 — ?
1952 — Taimanov, Mark vs Pachman, Ludek — 1/2-1/2 — Saltsjobaden SWE
1953 — Petrosian, Tigran A. vs Keres, Paul — 1/2-1/2 — ?
1954 — Kluger, Gyula vs Hajtun, Jozsef — 1/2-1/2 — Hungary ch
4…b6 — 10.4% (1666 parties)
1954 — Napolitano, Mario vs Leepin, Peter — 1/2-1/2 — Lucerne SUI
1955 — Kozma, Julius vs Fichtl, Jiri — 1/2-1/2 — Prague CZE
1956 — Rovner, Dmitry vs Stoliar, Efim Samoilovich — 1/2-1/2 — Leningrad RUS
1964 — Marchand, Erich W vs Sarosy, Zoltan L — 1-0 — Scarborough CAN
1966 — Werner, Stephan vs Meseberg, Willi — 1-0 — Detmold