B23a — Closed
1.e4 c5 2.Nc3
Eval: [+0.16]
Les coups candidats
Ambassadeurs : ? (169x), Starostits, Ilmars (160x), Mitkov, Nikola (143x), Lyell, Mark (108x), Welz, Peter, Dr. (99x), Bastian, Herbert (94x), Hort, Vlastimil (85x), Gdanski, Jacek (80x)
Ambassadeurs : Nekhaev, Andrey Ivanovich (59x), Mitkov, Nikola (53x), ? (45x), Gelfand, Boris (42x), Lyell, Mark (35x), Gutman, Lev (31x), Van Wely, Loek (29x), Novikov, Igor (28x)
Ambassadeurs : Mitkov, Nikola (67x), ? (43x), Gdanski, Jacek (40x), Miezis, Normunds (39x), Lyell, Mark (36x), Starostits, Ilmars (34x), Simonian, Hrair (33x), Balashov, Yuri (33x)
2…a6 — 5.3% (11510 parties)
Ambassadeurs : Lyell, Mark (32x), Vehi Bach, Victor Manuel (25x), Ghaem Maghami, Ehsan (24x), Doluhanova, Evgeniya (23x), Mitkov, Nikola (21x), Starostits, Ilmars (20x), Kempinski, Robert (18x), Deus Filho, Joaquim de (16x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 2…Nc6 2…d6 2…e6 2…a6
<1800 9881 53% 18% 16% 6%
1800-2200 89085 60% 14% 15% 6%
2200-2600 70233 60% 15% 15% 6%
2600+ 1689 39% 34% 17% 7%
Évolution par décennie (% des parties)
Décennie N parties 2…Nc6 2…d6 2…e6 2…a6
1790s 1 100%
1800s 1
1860s 25 40% 60%
1870s 39 46% 54%
1880s 130 61% 35% 1%
1890s 55 62% 36%
1900s 182 66% 32% 1%
1910s 30 37% 3% 53%
1920s 166 72% 4% 22% 1%
1930s 277 82% 10% 6% 0%
1940s 295 82% 8% 6%
1950s 803 79% 11% 4% 2%
1960s 2138 77% 10% 7% 1%
1970s 3619 66% 16% 15% 1%
1980s 6691 67% 14% 16% 1%
1990s 36954 67% 14% 15% 2%
2000s 70726 62% 15% 15% 4%
2010s 74096 55% 17% 15% 8%
2020s 20846 53% 19% 15% 8%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
2…Nc6 55% 53% ▼ -1.9%
2…d6 17% 19% ▲ +3.0%
2…e6 15% 15% -0.2%
2…a6 8% 8% -0.2%
Joueurs célèbres
Champions du monde dans cette position
Steinitz, Wilhelm — 10 parties
Lasker, Emanuel — 10 parties
Smyslov, Vladimir — 10 parties
Euwe, Max — 10 parties
Botvinnik, Mikhail — 10 parties
Tal, Mikhail — 10 parties
Karpov, Aleksandr — 10 parties
Karpov, Anatoly — 10 parties
Kasparov, Garry — 10 parties
Anand, Viswanathan — 10 parties
Kramnik, Vladimir — 10 parties
Carlsen, Magnus — 10 parties
Ju, Wenjun — 10 parties
Hou, Yifan — 10 parties
Gukesh D — 10 parties
Alekhine, Alexander — 7 parties
Ding, Liren — 4 parties
Parties historiques
2…Nc6 — 59.8% (129752 parties)
1793 — Hlavac, Frantisek vs Djeno, Drago — 1-0 — Bayern
1864 — Paulsen, Laurids vs Neumann, Gernot — 0-1 — Leipzig GER
1865 — Paulsen, Aleksander Karlsen vs Witthaus, C. — 1-0 — Elberfeld
1866 — Steinitz, Wilhelm vs Mac Donnell, A — 1-0 — London ENG
1866 — Steinitz, Wilhelm vs McDonnell, Alexander — 1-0 — London ENG
2…d6 — 15.6% (33879 parties)
1914 — Schories, Georg vs Spencer, A.J — 1-0 — Chester op
1926 — Kubbel vs Sergiev, Stefan — 1-0 — Moscow RUS
1927 — Znosko-Borovsky, Eugene vs Buerger, Victor — 1/2-1/2 — Tunbridge Wells
1928 — Flohr, Salo vs Machate — 1-0 — Mahr.Schonberg
1928 — Balogh, Janos vs Wertheim, Willem F — 1/2-1/2 — The Hague NED
2…e6 — 14.9% (32293 parties)
1861 — Paulsen, Louis vs Campbell, Joseph Graham — 0-1 — London ENG
1862 — Paulsen, Laurids vs Anderssen, Adolf — 1-0 — London ENG
1862 — Paulsen, Louis vs Anderssen, Adolf — 1-0 — London ENG
1862 — Paulsen, Louis vs Hengstenberg, C. — 1-0 — Duesseldorf GER
1862 — Paulsen, Laurids vs Anderssen, Adolf — 1-0 — London ENG
2…a6 — 5.3% (11510 parties)
1884 — Zukertort, Johannes vs Welsh, Alan — 0-1 — Irving Hall, San Francisco, CA USA
1905 — Reggio, Arturo vs Marshall, Frank — 0-1 — Scheveningen NED
1905 — Loman, Rudolf vs Marshall, Frank — 0-1 — Scheveningen NED
1921 — Krejcik, Jiri vs Tartakower, Savielly — 0-1 — Vienna AUT
1936 — Thomas, George Alan vs Grob, Henry — 0-1 — Ostend