C81e - 9…Be7 10.Rd1 - Open Keres

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C81e — Open Keres
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.Qe2 Be7 10.Rd1
Eval: [+0.07]
Les coups candidats
Ambassadeurs : Buj, Pablo (11x), ? (11x), Jansa, Vlastimil (10x), Timman, Jan H (10x), Matulovic, Milan (9x), Peli, Giora Dr (9x), Mikhalevski, Victor (8x), Stieg, Hans-Juergen (7x)
10…Nc5 — 19.2% (322 parties)
Ambassadeurs : Boleslavsky, Isaac (8x), Matulovic, Milan (8x), Donner, Jan-Hein (6x), Ivkov, Borislav (5x), Suetin, Alexey S (5x), Cortlever, Nico (4x), Ostojic, Predrag (4x), Boeven, Manfred (4x)
10…Na5 — 7.1% (119 parties)
Ambassadeurs : Cleghorn, Peter (3x), Geirnaert, Steven (3x), Yanofsky, Daniel Abraham (2x), Smith, Bryan (2x), Jansa, Vlastimil (2x), Aakanksha Hagawane (2x), Pruner, Earl (1x), Bergman, Chris (1x)
10…Qd7 — 0.8% (14 parties)
Ambassadeurs : Krylov, Sergey (2x), Palacios Perez, Manuel (2x), Vogt, Lothar (1x), Garcia Martinez, Silvino (1x), Hecht, Hans-Joachim (1x), Akvist, Hakan (1x), Wittmann, Rainer (1x), Bartel, Mario (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 10…O-O 10…Nc5 10…Na5 10…Qd7
<1800 19 95% — 5% —
1800-2200 287 70% 16% 13% 1%
2200-2600 573 81% 9% 8% 2%
2600+ 58 83% 12% 5% —
Évolution par décennie (% des parties)
Décennie N parties 10…O-O 10…Nc5 10…Na5 10…Qd7
1930s 1 — — 100% —
1940s 9 44% 33% 22% —
1950s 72 18% 75% 7% —
1960s 139 56% 42% 2% —
1970s 268 73% 21% 5% 1%
1980s 273 76% 22% 2% 0%
1990s 278 79% 15% 4% 1%
2000s 196 67% 13% 17% 2%
2010s 257 79% 7% 12% 1%
2020s 180 89% 4% 7% —
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
10…O-O 79% 89% ▲ +9.5%
10…Nc5 7% 4% ▼ -3.5%
10…Na5 12% 7% ▼ -5.2%
10…Qd7 1% 0% ▼ -0.8%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 5 parties
Euwe, Max — 4 parties
Carlsen, Magnus — 3 parties
Karpov, Anatoly — 2 parties
Kasparov, Garry — 1 partie
Anand, Viswanathan — 1 partie
Gukesh D — 1 partie
Parties historiques
10…O-O — 72.5% (1213 parties)
1948 — Keres, Paul Petrovich vs Euwe, Max — 1-0 — NLD/URS
1948 — Nash, Edmund vs Kashdan, Isaac — 0-1 — US op Baltimore, MD USA
1949 — Aronin, Lev vs Ragozin, Viacheslav — 1/2-1/2 — Moskou ch-URS
1949 — Kholmov, Ratmir D vs Grechkin, Dmitry M — 1-0 — Tbilisi GEO
1950 — Van Scheltinga, Theo vs Cuadrado Pastor, Antonio — 1/2-1/2 — ICCF
10…Nc5 — 19.2% (322 parties)
1949 — Aronin, Lev vs Keres, Paul — 1/2-1/2 — Moskou ch-URS
1949 — Aronin, Lev vs Keres Paul Petrovich — 1/2-1/2 — Moscow RUS
1949 — Anderson, Frank Ross vs Crompton, Charles — 0-1 — Toronto CAN
1950 — Neatby, Leslie Hamilton vs Anderson, Frank Ross — 0-1 — Toronto CAN
1950 — Mross, Paul vs Euwe, Max — 0-1 — Berlin GER
10…Na5 — 7.1% (119 parties)
1937 — Bauer, Randy vs Chalupetzky — 1/2-1/2 — corresp.
1949 — Pruner, Earl vs Bergman, Chris — 1-0 — San Francisco, CA USA
1949 — Tempelmeier, Oskar vs ? — 1-0 — Buende
1950 — Penrose, Justin vs Alexander, F. — 1/2-1/2 — Southsea
1952 — Yanofsky, Daniel Abraham vs Penrose, Oliver — 1/2-1/2 — West London CC
10…Qd7 — 0.8% (14 parties)
1972 — Vogt, Lothar vs Garcia Martinez, Silvino — 1-0 — Varna BUL
1973 — Hecht, Hans-Joachim vs Akvist, Hakan — 0-1 — Eksjo SWE
1979 — Acosta, Alejandro vs Gutierrez, Ramon — 0-1 — Manizales
1989 — Wittmann, Rainer vs Bartel, Mario — 1-0 — GER
1991 — Winterstein, Wolfgang vs Nielsen, Thomas Bach — 1/2-1/2 — Copenhagen DEN