D63n - 7…dxc4 8.Bxc4 a6 - Orthodox [+0.37]

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D63n — Orthodox
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 dxc4 8.Bxc4 a6
Eval: [+0.37]
Les coups candidats
9.a4 — 53.7% (169 parties)
Ambassadeurs : Ubilava, Elizbar (10x), Hoffman, Alejandro (8x), Tregubov, Pavel V. (6x), Goldin, Alexander (4x), Kveinys, Aloyzas (4x), Dokhoian, Yury (3x), Kharitonov, Adil (3x), Kayumov, Sergey (3x)
9.O-O — 22.9% (72 parties)
Ambassadeurs : Kveinys, Aloyzas (5x), Maghalashvili, Davit (3x), Verlinsky, Boris (2x), Olivieri Luigi (2x), Swiderski, Radoslaw (1x), Billecard, Moritz (1x), Burn, Amos (1x), Rubinstein, Akiba (1x)
9.Bd3 — 10.5% (33 parties)
Ambassadeurs : Ubilava, Elizbar (3x), Barglowski, Filip (3x), Alekhine, Alexander (2x), Naegeli, Oskar (2x), San Segundo Carrillo, Pablo (2x), Gomez Esteban, Juan Mario (2x), Tregubov, Pavel V. (2x), Fokin, Semen (1x)
9.e4 — 6.7% (21 parties)
Ambassadeurs : Lundholm, Stig Gustav (2x), Hoffman, Alejandro (2x), Gomez Esteban, Juan Mario (2x), Lorenzini, Martin (2x), Bogoljubow, Efim (1x), Naegeli, Oskar (1x), Hybl, Jaroslav (1x), Llorens Riera Ramon (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9.a4 9.O-O 9.Bd3 9.e4
<1800 2 50% 50% — —
1800-2200 58 50% 33% 3% 2%
2200-2600 203 59% 16% 12% 8%
2600+ 11 55% 9% 18% —
Évolution par décennie (% des parties)
Décennie N parties 9.a4 9.O-O 9.Bd3 9.e4
1900s 5 40% 60% — —
1920s 3 — 100% — —
1930s 8 25% 25% 25% 12%
1940s 2 — 100% — —
1960s 2 — — — 100%
1980s 29 69% 10% 3% 10%
1990s 71 59% 20% 17% 1%
2000s 120 53% 19% 10% 8%
2010s 60 47% 32% 8% 7%
2020s 15 73% 20% 7% —
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9.a4 47% 73% ▲ +26.7%
9.O-O 32% 20% ▼ -11.7%
9.Bd3 8% 7% ▼ -1.7%
9.e4 7% 0% ▼ -6.7%
Joueurs célèbres
Champions du monde dans cette position
Alekhine, Alexander — 2 parties
Smyslov, Vladimir — 1 partie
Parties historiques
9.a4 — 53.7% (169 parties)
1906 — Englund, Fritz vs Schlechter, Carl — 1/2-1/2 — Stockholm SWE
1907 — Vidmar Milan vs Dus Chotimirsky, Fedor — 1-0 — Carlsbad CZE
1931 — Yudovich, Mikhail M vs Verlinsky, Boris — 0-1 — Moskou ch-URS
1933 — Rabinovich, Ilya Mar vs Verlinsky, Boris — 0-1 — Leningrad ch-URS
1986 — Dokhoian, Yury vs Goldin, Alexander — 1-0 — Irkutsk
9.O-O — 22.9% (72 parties)
1905 — Burn, Amos vs Rubinstein, Akiba — 1/2-1/2 — Ostende
1907 — Swiderski, Radoslaw vs Billecard, Moritz — 0-1 — Ostende II
1909 — Rozanov, Valeriy Ev vs Verlinsky, Boris — 1/2-1/2 — St Petersburg RUS
1921 — Vecsey, Zoltan vs Vanek, Karel — 1/2-1/2 — Brno Morava
1924 — Rochlin vs Rivlin, Chris — 1-0 — Leningrad RUS
9.Bd3 — 10.5% (33 parties)
1932 — Alekhine, Alexander vs Naegeli, Oskar — 1/2-1/2 — Bern SUI
1932 — Alekhine, Alexander vs Naegeli, Oskar — 1/2-1/2 — Bern SUI
1987 — Fokin, Semen vs Kharitonov, Adil — 1/2-1/2 — Kursk
1992 — Azmaiparashvili, Zurab vs Ubilava, Elizbar — 1/2-1/2 — San Sebastian ESP
1993 — Schnepp, Gunnar vs Mueller, Siegmar — 1-0 — GER-ch qgC28 9395
9.e4 — 6.7% (21 parties)
1932 — Bogoljubow, Efim vs Naegeli, Oskar — 0-1 — Bern SUI
1965 — Hybl, Jaroslav vs Lundholm, Stig Gustav — 0-1 — CCOL5 fin 6568
1966 — Llorens Riera Ramon vs Lundholm, Stig Gustav — 0-1 — ?
1983 — Cvetkovic, Srdjan vs Cigan, Stefan — 0-1 — Pula CRO
1986 — Lerner, Konstantin Z vs Ubilava, Elizbar — 1/2-1/2 — Kuibyshev