C82k - 9…Bc5 10.Nbd2 O-O - Open St. Petersburg Variation

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C82k — Open St. Petersburg Variation
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3 Bc5 10.Nbd2 O-O
Eval: [+0.33]
Les coups candidats
Ambassadeurs : Pott, Brian (30x), Lombart, Philippe (30x), Herzog, Klaus (29x), Wiesinger, Johann (16x), Jussupow, Artur (13x), Timman, Jan H (13x), ? (13x), Estrin, Yakov (12x)
11.Qe2 — 9.3% (292 parties)
Ambassadeurs : Lombart, Philippe (5x), Boleslavsky, Isaac (4x), Lasker, Emanuel (3x), Farkas, Gabor Akos (3x), Botvinnik, Mikhail (2x), Miliani, Luigi (2x), Englund, Fritz (2x), Grob, Henry (2x)
11.Nxe4 — 1.7% (52 parties)
Ambassadeurs : Vargas Drechsler, Carlos (3x), De Souza Mendes, Joao (1x), Charlier, Antoine (1x), Green, Ewen M (1x), Smellie, Gabriel (1x), Ibrahimoglu, Ismet (1x), Cassidy, Paul L. (1x), Stanojoski, Zvonko (1x)
11.a4 — 0.4% (12 parties)
Ambassadeurs : Book, Eero (2x), Hasenfuss, Wolfgang (1x), Hassenfuss (1x), Kuttis, N. (1x), Anderson, Frank Ross (1x), Malfagia, Andrea (1x), Dusi, Valerio (1x), Sabol, Marian (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 11.Bc2 11.Qe2 11.Nxe4 11.a4
<1800 72 82% 7% 10% —
1800-2200 886 84% 13% 3% 0%
2200-2600 854 91% 8% 1% 0%
2600+ 75 97% 3% — —
Évolution par décennie (% des parties)
Décennie N parties 11.Bc2 11.Qe2 11.Nxe4 11.a4
1880s 4 100% — — —
1890s 17 100% — — —
1900s 29 83% 17% — —
1910s 25 80% 12% 4% —
1920s 17 88% 12% — —
1930s 7 43% 29% — 29%
1940s 85 80% 19% 1% —
1950s 72 83% 15% — 1%
1960s 113 87% 12% 1% —
1970s 213 90% 9% 0% —
1980s 417 96% 4% 0% 0%
1990s 643 91% 7% 2% 0%
2000s 636 87% 9% 3% 0%
2010s 556 81% 15% 3% 0%
2020s 303 92% 6% 2% 0%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
11.Bc2 81% 92% ▲ +11.1%
11.Qe2 15% 6% ▼ -9.7%
11.Nxe4 3% 2% ▼ -1.0%
11.a4 0% 0% -0.0%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Anatoly — 10 parties
Lasker, Emanuel — 6 parties
Botvinnik, Mikhail — 5 parties
Euwe, Max — 5 parties
Tal, Mikhail — 4 parties
Smyslov, Vladimir — 2 parties
Anand, Viswanathan — 1 partie
Carlsen, Magnus — 1 partie
Hou, Yifan — 1 partie
Parties historiques
11.Bc2 — 88.3% (2769 parties)
1882 — Fleissig, Bernhard vs MacKenzie, George H — 0-1 — Vienna AUT
1887 — McKenzie, George vs White, Max — 1/2-1/2 — Frankfurt GER
1887 — Tarrasch, Siegbert vs White, Max — 0-1 — 5th DSB Congress
1889 — White, Max vs Gossip, George — 1-0 — New York, NY USA
1893 — Tarrasch, Siegbert vs Chigorin, Mikhail — 1-0 — St Petersburg RUS
11.Qe2 — 9.3% (292 parties)
1902 — Lovegrove, WR. vs Lasker, Emanuel — 1-0 — San Francisco, CA USA
1902 — Lovegrove Walter vs Lasker, Emanuel — 1-0 — ?
1905 — Tartakower, Savielly vs Marchand, Max — 0-1 — Ostende
1905 — Englund, Fritz vs Lowy, Leopold — 0-1 — Barmen GER
1905 — Pettersson, AH. vs Englund, Fritz — 1-0 — Stockholm SWE
11.Nxe4 — 1.7% (52 parties)
1914 — Green, Ewen M vs Smellie, Gabriel — 0-1 — cr.
1943 — De Souza Mendes, Joao vs Charlier, Antoine — 1/2-1/2 — Brazil
1966 — Ibrahimoglu, Ismet vs Cassidy, Paul L. — 1/2-1/2 — Havana CUB
1979 — Li, Zunian vs Liu, Dachang — 0-1 — Beijing CHN
1989 — Stanojoski, Zvonko vs Ignjatovic, Predrag — 0-1 — Sokobanja
11.a4 — 0.4% (12 parties)
1937 — Book, Eero vs Hasenfuss, Wolfgang — 1-0 — Kemeri LAT
1937 — Book, Eero vs Hassenfuss — 1-0 — Kemeri LAT
1957 — Kuttis, N. vs Anderson, Frank Ross — 1/2-1/2 — Toronto CAN
1989 — Malfagia, Andrea vs Dusi, Valerio — 1-0 — Arco di Trento
1996 — Sabol, Marian vs Kozak, Milos — 0-1 — Czechia