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A29i — Four Knights
1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 Bb4 5.Nd5
Eval: [+0.09]
Les coups candidats
5…Bc5 — 46.1% (723 parties)
Ambassadeurs : Lautier, Joel (12x), Portych, Václav (12x), Svoboda, Frantisek (10x), Kratochvíl, Jan (6x), Korchnoi, Viktor (5x), Karpov, Anatoly (5x), Uhlmann, Wolfgang (5x), Hansen, Curt (5x)
5…e4 — 38.1% (598 parties)
Ambassadeurs : Portych, Václav (20x), Svoboda, Frantisek (15x), Bisguier, Arthur B (5x), Gheorghiu, Florin (5x), Almarza Mato, Carlos (5x), Ghitescu, Theodor (4x), Hecht, Hans-Joachim (4x), Stean, Michael F (4x)
5…Nxd5 — 5.7% (90 parties)
Ambassadeurs : Mayer, Steven F. (3x), Petrosian, Tigran A. (3x), Huebner, Robert (3x), Sax, Gyula (3x), Ree, Hans (2x), Adorjan, Andras (2x), Miles, Anthony J (2x), Cvetkovic, Srdjan (2x)
5…a5 — 2.7% (42 parties)
Ambassadeurs : Raetsky, Alexander (4x), Timman, Jan H (3x), Haubro-Suppanz, Martin (2x), Tiller, Bjorn (1x), Heiberg, Thomas (1x), Orr, Mark J L (1x), Christen, Peter (1x), Tal, Mikhail (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 5…Bc5 5…e4 5…Nxd5 5…a5
<1800 33 55% 30% 3%
1800-2200 384 45% 41% 3% 2%
2200-2600 749 43% 40% 6% 4%
2600+ 132 61% 25% 6% 3%
Évolution par décennie (% des parties)
Décennie N parties 5…Bc5 5…e4 5…Nxd5 5…a5
1930s 1 100%
1970s 74 23% 54% 18% 1%
1980s 142 44% 31% 17% 5%
1990s 241 45% 29% 9% 5%
2000s 426 53% 33% 4% 1%
2010s 517 49% 41% 2% 2%
2020s 167 34% 53% 2% 3%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
5…Bc5 49% 34% ▼ -15.0%
5…e4 41% 53% ▲ +11.9%
5…Nxd5 2% 2% ▼ -0.5%
5…a5 2% 3% ▲ +1.1%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Anatoly — 10 parties
Karpov, Aleksandr — 6 parties
Smyslov, Vladimir — 5 parties
Tal, Mikhail — 5 parties
Anand, Viswanathan — 3 parties
Carlsen, Magnus — 3 parties
Kasparov, Garry — 1 partie
Kramnik, Vladimir — 1 partie
Parties historiques
5…Bc5 — 46.1% (723 parties)
1935 — Kashdan, Isaac vs Belson, John Harold — 1-0 — Milwaukee, WI USA
1972 — Donner, H. vs Smyslov, Vladimir — 0-1 — Wijk aan Zee NED
1972 — Williams, Leo vs Lorenz, Gabor — 1-0 — Montreal CAN
1973 — Gheorghiu, Florin vs Portisch, Lajos — 1/2-1/2 — Petropolis izt
1973 — De Castro, Edgar vs Larsen, Bent — 0-1 — Manila PHI
5…e4 — 38.1% (598 parties)
1970 — Petrosian, Tigran A. vs Liebert, Heinz — 1-0 — Siegen GER
1971 — Baumbach, Friedrich, Dr. vs Schmidt, Hannah — 1/2-1/2 — Strasbourg ch20-DDR
1971 — Barcza, Gedeon vs Bisguier, Arthur B — 1/2-1/2 — Tallinn Tallinn EST
1971 — Barcza, Gedeon vs Bisguier, Arthur B — 1/2-1/2 — Tallinn EST
1971 — Timman, Jan H vs Bisguier, Arthur B — 0-1 — Malaga Malaga ESP
5…Nxd5 — 5.7% (90 parties)
1971 — Petrosian, Tigran A. vs Ree, Hans — 1-0 — Wijk aan Zee NED
1971 — Petrosian, Tigran A. vs De Ree, Martijn — 1-0 — Wijk aan Zee NED
1973 — Saidy, Anthony vs Kapengut, Albert — 1/2-1/2 — Lublin POL
1973 — Silva Nazzari, H. vs Cristobal, Rhen Rhizzimhel — 1-0 — Mar del Plata open
1974 — Suba, Mihai vs Giorgadze, Tamaz — 0-1 — Lublin POL
5…a5 — 2.7% (42 parties)
1979 — Timman, Jan H vs Gaprindashvili, Nona — 1-0 — Wijk aan Zee NED
1980 — Tiller, Bjorn vs Heiberg, Thomas — 1/2-1/2 — Baerum
1980 — Jussupow, Artur vs Kuzmin, Gennadiy — 0-1 — Vilnius ch-URS
1981 — Petrosian, Tigran V. vs Kuzmin, Gennadi — 1/2-1/2 — Moscow RUS
1981 — Duer, Arne vs Kaspret, Guido — 1-0 — Graz WTch jr