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A28i — Four Knights (1935)
1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.e3 Bb4 5.Qc2
Les coups candidats
Ambassadeurs : Akguney, Hasim (20x), Bishop, William (18x), Suba, Mihai (17x), Jørgensen, Brian Jørgen (17x), Esin, Maxim (16x), Szerlak, Andrzej (15x), Tsenkov, Ljubomir (14x), Ellis, James (14x)
5…O-O — 40.7% (2310 parties)
Ambassadeurs : Suba, Mihai (10x), ? (10x), Corvi, Marco (9x), Miles, Anthony J (8x), Timman, Jan H (8x), Bishop, Nicholas (8x), Smyslov, Vasily (7x), Lanzani, Paolo (6x)
5…d6 — 8.0% (451 parties)
Ambassadeurs : Mareco, Sandro (4x), Sodomski, Andrzej (4x), Almeraya, Eduardo (4x), Harsha Bharathakoti (4x), Willmann, Bernd (4x), Plaskett, H James (3x), Stohl, Igor (3x), von Buttlar, Paul (3x)
5…a5 — 1.1% (62 parties)
Ambassadeurs : Fyllingen, Roy Harald (2x), Petersons, Indulis (2x), Jovic, Stanoje (2x), Grunberg, Mihai-Lucian (2x), Thurlow, Kevin J (2x), Landsman, Klaas (1x), Ramaekers, Philippe (1x), Santa Torres, Juan M. (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 5…Bxc3 5…O-O 5…d6 5…a5
<1800 252 45% 44% 10%
1800-2200 1756 48% 42% 8% 1%
2200-2600 2820 53% 39% 7% 1%
2600+ 230 70% 18% 10% 1%
Évolution par décennie (% des parties)
Décennie N parties 5…Bxc3 5…O-O 5…d6 5…a5
1950s 6 100%
1960s 15 20% 80%
1970s 240 20% 72% 8% 1%
1980s 365 42% 52% 4% 1%
1990s 527 37% 56% 6% 1%
2000s 880 40% 49% 9% 1%
2010s 2363 53% 35% 10% 1%
2020s 1273 63% 30% 5% 2%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
5…Bxc3 53% 63% ▲ +9.5%
5…O-O 35% 30% ▼ -5.3%
5…d6 10% 5% ▼ -4.7%
5…a5 1% 2% +0.4%
Joueurs célèbres
Champions du monde dans cette position
Ding, Liren — 8 parties
Karpov, Anatoly — 7 parties
Kasparov, Garry — 4 parties
Anand, Viswanathan — 3 parties
Carlsen, Magnus — 3 parties
Tal, Mikhail — 1 partie
Hou, Yifan — 1 partie
Ju, Wenjun — 1 partie
Parties historiques
5…Bxc3 — 49.7% (2818 parties)
1961 — Abanin, Vladimir vs Flohr, Salo — 1/2-1/2 — Sochi RUS
1965 — Poder Walter vs Preo, Nicolas A — 0-1 — ?
1965 — Poder, William vs Preo, Nicolas A — 0-1 — CCOL5 fin 6568
1974 — Polugaevsky, Lev vs Matanovic, Anto — 1/2-1/2 — Belgrade SRB
1975 — Haas, Georges vs Kiffmeyer, Constanz — 1/2-1/2 — Ostende
5…O-O — 40.7% (2310 parties)
1951 — Heinicke, Herbert vs Bogoljubow, Efim — 0-1 — Augsburg GER
1952 — Filip, Miroslav vs Potucek, Ludovit — 1-0 — Tatranska ch CZE
1954 — Antonio Molina, Zayra Angelina vs Tikovsky, Augustin — 0-1 — Jablonec nad Nisou
1957 — Feuerstein, Arthur vs Elter, Sophia — 1/2-1/2 — New York, NY USA
1957 — Blacher, Fernand vs Saint-Germain, Gaston de — 1-0 — ?
5…d6 — 8.0% (451 parties)
1973 — Deleyn, Gunter vs Diesen, Mark C — 1/2-1/2 — Schilde
1974 — Langeweg, Kick vs Timman, Jan H — 1/2-1/2 — Wijk aan Zee NED
1975 — Eising, Johannes vs Enklaar, Bert — 1-0 — Amsterdam NED
1977 — Goodman, David S C vs Ghysels, Chris — 1-0 — Innsbruck AUT
1977 — Adamski, Jan vs Kholmov, Ratmir D — 1/2-1/2 — Zala Cup Zalaegerszeg
5…a5 — 1.1% (62 parties)
1976 — Tangborn, Eric vs Brown, Paul — 1-0 — Gresham
1979 — Savon, Vladimir vs Anikaev, Yuri N — 1-0 — Suomi
1980 — Landsman, Klaas vs Ramaekers, Philippe — 1-0 — Dieren NED
1982 — Santa Torres, Juan M. vs Juarez Flores, Carlos A. — 0-1 — Luzern olm
1989 — Derikum, Axel vs Messmer, Martin — 1/2-1/2 — GER