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B28b — O’Kelly
1.e4 c5 2.Nf3 a6 3.Nc3
Eval: [+0.17]
Les coups candidats
3…e6 — 32.0% (1477 parties)
Ambassadeurs : Vasilevich, Tatjana (9x), Zuluaga Mancilla, Cesar (9x), Karimov, Farukh (7x), Eingorn, Vereslav S (6x), Nuber, Korbinian, Dr. (6x), Gorbatov, Alexej (6x), Barlov, Dragan (6x), Korchnoi, Viktor (5x)
3…d6 — 29.8% (1376 parties)
Ambassadeurs : Csom, Istvan (16x), Ardeleanu, Alin (8x), Krastev, Alexander (7x), Ghaem Maghami, Ehsan (6x), Bonnet, Edouard (4x), Haussernot, Cecile (4x), Ajibowo, Olamide Patrick (4x), Kolbus, Dietmar (4x)
3…b5 — 21.9% (1011 parties)
Ambassadeurs : Khamrakulov, Ibragim S. (11x), Franklin, Michael J (9x), Kurajica, Bojan (8x), Borda, Lajos (6x), McLaughlin, Ed (6x), Erenska-Barlo, Hanna (5x), Boidman, Yuri (5x), Hoffmann, Steffen (4x)
3…Nc6 — 14.8% (686 parties)
Ambassadeurs : Tu, Hoang Thai (4x), Frey, Walter (3x), Moldawski, Tomasz (3x), Durán Vallverdú, Joan (3x), Godinho Marques, Pedro (3x), Taimanov, Mark (2x), Kaps, Darja (2x), Weich, Claudia (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 3…e6 3…d6 3…b5 3…Nc6
<1800 191 27% 28% 20% 24%
1800-2200 1620 31% 27% 21% 19%
2200-2600 2047 35% 34% 25% 6%
2600+ 29 52% 24% 24%
Évolution par décennie (% des parties)
Décennie N parties 3…e6 3…d6 3…b5 3…Nc6
1880s 1 100%
1900s 2 100%
1940s 1 100%
1950s 19 21% 37% 11% 26%
1960s 67 40% 12% 24% 22%
1970s 71 28% 14% 31% 23%
1980s 86 28% 26% 20% 27%
1990s 413 29% 26% 16% 28%
2000s 1379 32% 29% 22% 15%
2010s 2034 35% 31% 21% 13%
2020s 547 26% 35% 29% 9%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
3…e6 35% 26% ▼ -8.7%
3…d6 31% 35% ▲ +3.9%
3…b5 21% 29% ▲ +8.6%
3…Nc6 13% 9% ▼ -4.0%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 4 parties
Hou, Yifan — 4 parties
Karpov, Aleksandr — 1 partie
Parties historiques
3…e6 — 32.0% (1477 parties)
1949 — Fletzer, Gino vs Rossolimo, Nicolas — 0-1 — Venice ITA
1950 — Paoli, Enrico vs Tot, Bora — 1/2-1/2 — Vienna AUT
1956 — Nezhmetdinov, Rashid vs Vasilev, Milen — 1-0 — Kislovodsk
1959 — Bilek, Istvan vs Forgacs, Andras — 1-0 — CsB
1959 — Gufeld, Eduard vs Taimanov, Mark — 0-1 — Tbilisi ch-URS
3…d6 — 29.8% (1376 parties)
1884 — Zukertort, Johannes vs Welsh, Alan — 0-1 — Irving Hall, San Francisco, CA USA
1951 — Eastman, George vs Martin, Raymond — 1-0 — Fort Worth, TX USA
1953 — Byvshev, Vasily vs Nei, Iivo — 1-0 — Leningrad RUS
1953 — Tal, Mikhail vs Zilber, Israel — 1-0 — Riga LAT
1953 — Tal, Mikhail vs Josif Israel Zilber — 1-0 — Riga LAT
3…b5 — 21.9% (1011 parties)
1905 — Reggio, Arturo vs Marshall, Frank — 0-1 — Scheveningen NED
1905 — Loman, Rudolf vs Marshall, Frank — 0-1 — Scheveningen NED
1951 — Medina-Garcia, Antonio vs Fuentes Garcia, Juan Manuel — 0-1 — Madrid ESP
1957 — Suetin, Alexey S vs Spassky, Boris V. — 1/2-1/2 — Leningrad RUS
1961 — Szabo, Ladislav vs Orendi, E. — 1-0 — Budapest HUN
3…Nc6 — 14.8% (686 parties)
1950 — Rossolimo, Nicolas vs Steiner, Heinrich Jun. — 1-0 — Venice ITA
1955 — Williams, J.Noel vs Zalys, Ignas — 1-0 — Montreal ch
1956 — Castiglioni, Andre Lazzari vs Mohovich, Paolo — 1-0 — corr Italy
1956 — Ugolik, Witaly vs Makarov, Arkady Alexandrovic — 0-1 — Kiev UKR
1957 — Zvorykina, Kira Alekseyevna vs Barshauskas, Vitautas — 1/2-1/2 — Minsk BLR