D39f — Ragozin Vienna
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 Bb4 5.Bg5 dxc4 6.e4 c5 7.e5 cxd4
Eval: [+0.11]
Les coups candidats
8.Qa4+ — 48.7% (260 parties)
Ambassadeurs : Kunin, Vitaly (4x), Rodriguez Vargas, Orestes (3x), Timman, Jan H (3x), Riazantsev, Alexander (3x), Fine, Richard Alvaro Adrien (2x), Gruenfeld, Ernst (2x), De Groot, Adriaan (2x), Gereben, Erno (2x)
8.Nxd4 — 38.6% (206 parties)
Ambassadeurs : Dreev, Aleksey (4x), Kempinski, Robert (3x), Padevsky, Nikola (2x), Kiprov Alexander Alexandro (2x), Huzman, Alexander (2x), Muse, Mladen (2x), Piket, Jeroen (2x), Horvath, Csaba (2x)
8.exf6 — 12.2% (65 parties)
Ambassadeurs : Cramling, Pia (3x), Litynska, Marta (2x), Estrin, Yakov (2x), Apscheneek, Fricis (1x), Gruenfeld, Ernst (1x), Savitsky, Leonid (1x), Rabinovich, Ilya Mar (1x), Sacconi, Antonio (1x)
8.a3 — 0.4% (2 parties)
Ambassadeurs : Hort, Vlastimil (1x), Albano, Marco (1x), Zakhartsov, Vladimir (1x), Vorobiov, Evgeny E. (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 8.Qa4+ 8.Nxd4 8.exf6 8.a3
<1800 7 29% 43% 14%
1800-2200 67 51% 33% 16%
2200-2600 309 44% 44% 11% 1%
2600+ 62 52% 48%
Évolution par décennie (% des parties)
Décennie N parties 8.Qa4+ 8.Nxd4 8.exf6 8.a3
1930s 20 65% 5% 30%
1940s 8 50% 25% 25%
1950s 2 100%
1960s 4 50% 50%
1970s 2 50% 50%
1980s 79 54% 28% 16% 1%
1990s 52 56% 33% 12%
2000s 184 48% 45% 8%
2010s 141 44% 44% 11% 1%
2020s 42 38% 48% 14%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
8.Qa4+ 44% 38% ▼ -5.9%
8.Nxd4 44% 48% ▲ +3.6%
8.exf6 11% 14% ▲ +3.6%
8.a3 1% 0% ▼ -0.7%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Anatoly — 2 parties
Kasparov, Garry — 2 parties
Euwe, Max — 1 partie
Karpov, Aleksandr — 1 partie
Anand, Viswanathan — 1 partie
Carlsen, Magnus — 1 partie
Parties historiques
8.Qa4+ — 48.7% (260 parties)
1934 — Gilg, Karl vs Boros, Sandor — 1-0 — Bad Liebwerda
1936 — Fine, Richard Alvaro Adrien vs Gruenfeld, Ernst — 1-0 — Amsterdam NED
1936 — De Groot, Adriaan vs Broeder, Mirko — 1/2-1/2 — Munich GER
1936 — Gereben, Erno vs De Groot, Adriaan — 1/2-1/2 — Munich GER
1936 — Vidmar, Milan Sr vs Bogoljubow, Efim — 1-0 — Nottingham ENG
8.Nxd4 — 38.6% (206 parties)
1935 — Goldstein, Maurice Edwards vs Purdy, Cecil J S — 0-1 — Melbourne AUS
1949 — Padevsky, Nikola vs Kiprov Alexander Alexandro — 1-0 — Sofia BUL
1949 — Padevsky, Nikola vs Kiprov Alexander Alexandro — 1-0 — Sofia BUL
1986 — Podat, Vladimir vs Izhnin, A. — 1/2-1/2 — Soviet Union
1987 — Timoscenko, Gennadij vs Huzman, Alexander — 1/2-1/2 — USSR
8.exf6 — 12.2% (65 parties)
1933 — Apscheneek, Fricis vs Gruenfeld, Ernst — 0-1 — Folkestone ENG
1933 — Savitsky, Leonid vs Rabinovich, Ilya Mar — 1/2-1/2 — Leningrad ch-URS
1934 — Zinner, Emil vs Gilg, Karl — 1-0 — Brno-Ostrava
1935 — Znosko-Borovsky, Eugene vs Mueller, Hans — 0-1 — Tatatovaros HUN
1935 — Napolitano, Matteo vs Muller, Hans — 0-1 — Warsaw POL
8.a3 — 0.4% (2 parties)
1983 — Hort, Vlastimil vs Albano, Marco — 1/2-1/2 — Imperia
2019 — Zakhartsov, Vladimir vs Vorobiov, Evgeny E. — 1-0 — St Petersburg RUS