C81e - 9…Be7 10.Rd1 - Open, Keres (1949)

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C81e — Open, Keres (1949)
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
Les coups candidats
Ambassadeurs : Buj, Pablo (10x), Jansa, Vlastimil (10x), Timman, Jan H (10x), Peli, Giora Dr (8x), Mikhalevski, Victor (8x), ? (8x), Burridge, Raymond John (7x), Matulovic, Milan (6x)
10…Nc5 — 18.9% (317 parties)
Ambassadeurs : Matulovic, Milan (8x), Boleslavsky, Isaac (7x), Donner, Jan-Hein (6x), Ivkov, Borislav (5x), Suetin, Alexey S (5x), Cortlever, Nico (4x), Boeven, Manfred (4x), Bartis, Gustavo (3x)
10…Na5 — 7.0% (118 parties)
Ambassadeurs : Geirnaert, Steven (3x), Yanofsky, Daniel Abraham (2x), Jansa, Vlastimil (2x), Kavalek, Lubomir (1x), Simek, Jakub (1x), Krantz, Kjell (1x), Palermo, Vicente (1x), Piazzini, Luis (1x)
10…Qd7 — 0.9% (15 parties)
Ambassadeurs : Krylov, Sergey (2x), Palacios Perez, Manuel (2x), Vogt, Lothar (1x), Garcia Martinez, Silvino (1x), Hecht, Hans-Joachim (1x), Asik, 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 46 80% 11% 9% —
1800-2200 381 74% 13% 12% 1%
2200-2600 575 79% 11% 8% 2%
2600+ 50 84% 12% 4% —
Évolution par décennie (% des parties)
Décennie N parties 10…O-O 10…Nc5 10…Na5 10…Qd7
1950s 71 17% 75% 8% —
1960s 136 56% 42% 2% —
1970s 266 73% 20% 5% 1%
1980s 273 76% 21% 2% 0%
1990s 279 79% 15% 4% 1%
2000s 198 67% 13% 17% 2%
2010s 256 79% 7% 12% 1%
2020s 195 88% 4% 7% 1%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
10…O-O 79% 88% ▲ +8.9%
10…Nc5 7% 4% ▼ -3.3%
10…Na5 12% 7% ▼ -5.3%
10…Qd7 1% 1% -0.3%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 6 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 — 72.8% (1219 parties)
1950 — Bosch van Rosenthal, Edzard vs Cuadrado Pastor, Antonio — 1/2-1/2 — ?
1950 — Goldberg, Daniel vs Matokhin, A. — 0-1 — RSFSR ch sf
1952 — Aabel Thomas Eapen vs Tayler, RJ. — 1/2-1/2 — Chester ch-BCF
1952 — Thomas Andrew vs Taylor, A (tony) — 1/2-1/2 — England
1953 — Ziembinski, Marian vs Szymanski, Aleksander — 1-0 — Krakow POL
10…Nc5 — 18.9% (317 parties)
1950 — Neatby, Leslie Hamilton vs Anderson, Frank Ross — 0-1 — Toronto CAN
1950 — Mross, Paul vs Eken, Max — 0-1 — ?
1950 — Castillo Bermudez, Manuel vs Unzicker, Ferdinand, Dr. — 0-1 — Dubrovnik CRO
1950 — Unzicker, Ferdinand, Dr. vs Aditya Balu Jadhav — 1/2-1/2 — Travemunde
1950 — Boleslavsky, Isaac vs Alexander Tadala — 1/2-1/2 — Moscow RUS
10…Na5 — 7.0% (118 parties)
1950 — Penrose, Jonathan vs Alexander, FFL. — 1/2-1/2 — Southsea
1952 — Yanofsky, Daniel Abraham vs Penrose, O — 1/2-1/2 — Oxford-Cambridge
1952 — Yanofsky, Daniel Abraham vs Bunyola Oliver, Pedro Antonio — 1/2-1/2 — Oxford ENG
1955 — Pupols, Viktors vs Kalme, Charles I — 0-1 — Lincolnwood (USA)
1957 — Farre, Miguel vs Puig, Adria — 1-0 — ESP
10…Qd7 — 0.9% (15 parties)
1972 — Vogt, Lothar vs Garcia Martinez, Silvino — 1-0 — Varna BUL
1973 — Hecht, Hans-Joachim vs Asik, Hakan — 0-1 — Eksjo SWE
1979 — Acosta, Alejandro vs Gutierrez, Ramon — 0-1 — Manizales
1988 — Wittmann, Rainer vs Bartel, Mario — 1-0 — GER
1991 — Winterstein, Wolfgang vs Nielsen, Thomas Bach — 1/2-1/2 — Copenhagen DEN