B28d — O’Kelly
1.e4 c5 2.Nf3 a6 3.d4 cxd4 4.Nxd4
Les coups candidats
Ambassadeurs : Zalys, Ignas (37x), Collins, Richard Arnold (28x), Bakalar, Jan (19x), Borda, Lajos (17x), Damia, Angelo (17x), Gerhardt, Peter-Michael (16x), Frey, Walter (15x), Skorobogatykh, Andrey (15x)
4…e5 — 14.2% (1145 parties)
Ambassadeurs : Owens, Megan R (8x), Nguyen, Duc Hoa (6x), Kvisla, Johannes Luangtep (6x), Elieff, Kosta (4x), Thiele, Matthias (4x), Ticha, H. (4x), Peltanova, Zuzana (4x), Paraskevaidis, Vasilios (4x)
Ambassadeurs : Helin, Mikael (12x), Spacek, Oliver (6x), Blackstone, John (4x), Diaz Patete, Milagros del Valle (3x), Grawe, Herbert (3x), Ulrich, Peter (3x), Ahmed Abdel Fatah, Joudy (3x), Marcziter, Dmitrii (3x)
Ambassadeurs : Jonas, Zsolt (5x), Valencia Escobar, Dario (3x), Krekoten, Vladimir (3x), Hoppe, Sven (2x), Vandivier, Don L (2x), Vogelhuber, Annett (2x), Nadvesnik, Vilma (2x), Bettray, Andreas (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…Nf6 4…e5 4…e6 4…d6
<1800 666 69% 16% 6% 4%
1800-2200 3844 76% 14% 4% 3%
2200-2600 1027 80% 14% 3% 1%
2600+ 3 67% 33%
Évolution par décennie (% des parties)
Décennie N parties 4…Nf6 4…e5 4…e6 4…d6
1850s 1
1900s 2
1910s 1 100%
1920s 6 50% 33%
1930s 1 100%
1940s 11 91%
1950s 97 88% 6% 3%
1960s 197 82% 10% 6%
1970s 129 88% 7% 4%
1980s 192 81% 10% 2% 2%
1990s 1234 76% 15% 3% 2%
2000s 2804 74% 15% 4% 3%
2010s 2894 73% 15% 5% 4%
2020s 489 78% 15% 3% 1%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…Nf6 73% 78% ▲ +5.3%
4…e5 15% 15% -0.1%
4…e6 5% 3% ▼ -1.8%
4…d6 4% 1% ▼ -2.2%
Joueurs célèbres
Champions du monde dans cette position
Euwe, Max — 4 parties
Hou, Yifan — 3 parties
Tal, Mikhail — 1 partie
Smyslov, Vladimir — 1 partie
Kasparov, Garry — 1 partie
Parties historiques
4…Nf6 — 74.9% (6036 parties)
1921 — Spielmann, Rudolf vs Tartakower, Savielly — 1-0 — Vienna m1 Vienna AUT
1921 — Spielmann, Rudolf vs Tartakower, Savielly — 1-0 — Vienna AUT
1926 — Yates, Frederic D vs Tartakower, Savielly — 1-0 — Budapest Budapest HUN
1935 — Asztalos, Lajos vs Tot, Bora — 1/2-1/2 — Belgrado ch YUG
1948 — Arni Snaevarr vs Euwe, Max — 0-1 — Reykjavik ISL
4…e5 — 14.2% (1145 parties)
1950 — Penrose, Justin vs Tartakower, Savielly — 1-0 — Southsea ENG
1951 — Michel, Paul vs Mueller, Hans — 1/2-1/2 — Vienna AUT
1954 — Pedersen, Ebbe vs Solin, Ilya — 1/2-1/2 — Prague zt Prague CZE
1956 — Rubtsova, Olga vs Rudenko, Ludmila — 1-0 — Moscow RUS
1959 — Milic, Borislav vs Taimanov, Mark — 0-1 — Kiev UKR
4…e6 — 4.0% (326 parties)
1911 — Hromadka, Karel vs Hafe — 1-0 — Cologne GER
1924 — Chepurnov, Anatoly A vs Havasi, Kornel — 1-0 — Paris FRA
1926 — Romih, Max vs Baratz, Abraham — 0-1 — Hyeres FRA
1958 — Balduzzi, Reynaldo vs Castaneda Cruz, Raul — 1-0 — Buenos Aires ARG
1958 — Yanofsky, Daniel Abraham vs Raizman, Maurice — 1/2-1/2 — Munchen olm
4…d6 — 2.9% (235 parties)
1980 — Van Parreren, Hanneke vs Van der Giessen, Ada Leona — 0-1 — Mijdrecht
1985 — Andersen, Erik vs Molgard, K. — 1-0 — Esbjerg DEN
1988 — Moissl, Richard vs Glosse, Jochen — 1/2-1/2 — ?
1991 — Avaria, J. vs Everet D — 1/2-1/2 — Mamaia
1992 — Haugen, Arild vs Lauvsnes, Arild — 0-1 — Fister