E25d - 8.dxc5 - Keres Variation (1941)

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E25d — Saemisch, Keres Variation (1941)
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 c5 6.f3 d5 7.cxd5 Nxd5 8.dxc5
Les coups candidats
8…Qa5 — 68.0% (2319 parties)
Ambassadeurs : Moskalenko, Viktor (29x), Volkov, Sergey (28x), Ambasa Ingrio (25x), Daus, Peter (17x), González Barcina, Francisco-José (13x), Krizsany, Laszlo (12x), Sundqvist, Christer (12x), Bakheet Farag (11x)
Ambassadeurs : Legemaat, Gert (11x), Naumkin, Igor (10x), Zilberberg, Alik (8x), Bars, Joachim (8x), Portisch, Lajos (5x), Ambasa Ingrio (5x), Polugaevsky, Lev (4x), Arabia, Laurence (4x)
8…O-O — 1.2% (40 parties)
Ambassadeurs : Kretchetov, Alexandre (2x), Butnorius, Algimantas (1x), Kaunas, Kestutis (1x), Snellman, Sven (1x), Mykra, Veikko (1x), Pitkanen, Juhani (1x), Haapasalo, Matti (1x), Poupinel, Michel (1x)
8…Nd7 — 0.8% (28 parties)
Ambassadeurs : Diez del Corral, Jesus (1x), Olafsson, Fridrik (1x), Erdogan, Hakan (1x), Baramidze, David (1x), Pomes Marcet, Joan (1x), Adams, Michael (1x), Ulybin, Mikhail (1x), Cherniaev, Alexander (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 8…Qa5 8…f5 8…O-O 8…Nd7
<1800 128 76% 21% 2% 1%
1800-2200 1136 70% 27% 1% 1%
2200-2600 1638 71% 27% 1% 1%
2600+ 101 80% 18% — 2%
Évolution par décennie (% des parties)
Décennie N parties 8…Qa5 8…f5 8…O-O 8…Nd7
1950s 20 50% 35% — —
1960s 140 28% 69% 1% —
1970s 90 27% 70% 2% 1%
1980s 118 45% 55% — —
1990s 308 70% 28% 2% —
2000s 855 76% 20% 1% 3%
2010s 1346 69% 30% 1% —
2020s 534 76% 22% 1% 1%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
8…Qa5 69% 76% ▲ +7.2%
8…f5 30% 22% ▼ -8.0%
8…O-O 1% 1% -0.1%
8…Nd7 0% 1% ▲ +0.9%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Anatoly — 5 parties
Anand, Viswanathan — 4 parties
Carlsen, Magnus — 4 parties
Ding, Liren — 4 parties
Tal, Mikhail — 3 parties
Kramnik, Vladimir — 3 parties
Hou, Yifan — 2 parties
Ju, Wenjun — 2 parties
Smyslov, Vladimir — 1 partie
Gukesh D — 1 partie
Parties historiques
8…Qa5 — 68.0% (2319 parties)
1950 — Castillo Bermudez, Manuel vs Donner, Jan-Hein — 1/2-1/2 — Venice ITA
1950 — Castillo, Manuel vs Donner, Jan-Hein — 1/2-1/2 — Venice ITA
1950 — Gligorić, Svetozar vs Martin Martinez, Pedro Jose — 1-0 — Mar del Plata ARG
1951 — Jauregui, Carlos vs Almiron, Martin Alejandro — 1/2-1/2 — Santiago de Chile
1954 — Branicki, Ignacy vs Makarczyk, Kazimierz — 1-0 — Lodz ch12-PL
8…f5 — 29.4% (1004 parties)
1952 — Kuzminykh, Evgeny vs Efimov, Kondrat — 0-1 — Leningrad RUS
1953 — Klavins, Janis vs Tal, Mikhail — 1/2-1/2 — USSR
1954 — Ragozin, Viacheslav vs Sokolsky, Alexey — 1/2-1/2 — Kiev ch-URS
1957 — Szabo, Laszlo vs Teschner, Rudolf — 1-0 — Wageningen zt
1958 — Polugaevsky, Lev vs Petrosian, Tigran V. — 1/2-1/2 — Riga ch-URS
8…O-O — 1.2% (40 parties)
1964 — Snellman, Sven vs Mykra, Veikko — 1-0 — ?
1967 — Butnorius, Algimantas vs Kaunas, Kestutis — 1-0 — USSR
1973 — Poupinel, Michel vs Dulhauste, Alain — 1-0 — ?
1979 — Pitkanen, Juhani vs Haapasalo, Matti — 1-0 — corr NS/I
1991 — Misanovic, Vesna vs Nutu-Gajic, Daniela — 1-0 — Pula CRO
8…Nd7 — 0.8% (28 parties)
1978 — Diez del Corral, Jesus vs Olafsson, Fridrik — 1/2-1/2 — Las Palmas Las Palmas ESP
2001 — Pomes Marcet, Joan vs Adams, Michael — 0-1 — Mainz GER
2002 — Lafarga, David vs Ellis, Roy — 1-0 — ICCF Email
2002 — Bluvshtein, Mark vs Roussel-Roozmon, Thomas — 1-0 — Montreal CAN
2002 — Summerscale, Aaron P vs Emms, John M — 1/2-1/2 — ?