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D21v — QGA: Alekhine (1936)
1.d4 d5 2.c4 dxc4 3.Nf3 a6 4.a4
Les coups candidats
4…Nf6 — 64.6% (587 parties)
Ambassadeurs : Baburin, Alexander (5x), Donchenko, Anatoly (5x), Alekseenko, Kirill (5x), Mayer, Steven F. (4x), Sadler, Matthew D (4x), Yakovich, Yuri (4x), Sulava, Nenad (4x), Jonkman, Harmen (4x)
4…Nc6 — 23.9% (217 parties)
Ambassadeurs : Reddy, Tyler (3x), Varga, Zoltan (3x), Dlugy, Maxim (3x), Marzano, Carlo (3x), Huschenbeth, Niclas (3x), Ruefenacht, Matthias (3x), Krush, Irina (3x), Eperjesi, Laszlo Dr. (2x)
4…c5 — 4.4% (40 parties)
Ambassadeurs : Shelk, Alexander (2x), Bastholm, Joergen (1x), Horvath, Jozsef M (1x), Zapata Vinces, Mario (1x), Letelier Martner, Rene (1x), Geus, William J (1x), Bagirov, Vladimir (1x), Mulcahy, Edmond (1x)
4…e6 — 3.2% (29 parties)
Ambassadeurs : Savchenko, Aleksij (2x), Aturupane, Harinlal (1x), Anand, Viswanathan (1x), Souren, E. (1x), Pluymen, J. (1x), Salaske, Peter (1x), Eck, W. (1x), Lassila, Erkki (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…Nf6 4…Nc6 4…c5 4…e6
<1800 32 62% 25% 6%
1800-2200 344 56% 29% 5% 4%
2200-2600 399 68% 24% 4% 2%
2600+ 15 73% 20% 7%
Évolution par décennie (% des parties)
Décennie N parties 4…Nf6 4…Nc6 4…c5 4…e6
1950s 24 79% 12%
1960s 17 82% 6% 12%
1970s 16 75% 6% 19%
1980s 63 81% 6% 2% 5%
1990s 166 79% 13% 3% 3%
2000s 220 67% 23% 3% 4%
2010s 299 57% 29% 6% 3%
2020s 103 40% 51% 2% 3%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…Nf6 57% 40% ▼ -17.4%
4…Nc6 29% 51% ▲ +22.7%
4…c5 6% 2% ▼ -4.1%
4…e6 3% 3% -0.1%
Joueurs célèbres
Champions du monde dans cette position
Anand, Viswanathan — 2 parties
Ju, Wenjun — 1 partie
Parties historiques
4…Nf6 — 64.6% (587 parties)
1950 — Novotelnov, Nikolai vs Flohr, Salo — 0-1 — URS-ch sf Tartu
1951 — Lopez, Alberto vs Rivise, Irving — 0-1 — Los Angeles, CA USA
1951 — Staldi, Cherubino vs Emden, Hermann — 1/2-1/2 — Venice ITA
1952 — Suyker, A vs Pelton, Edwin — 1-0 — cr.
1952 — Fox, Maurice vs Brunet, Phil — 1-0 — Montreal CAN
4…Nc6 — 23.9% (217 parties)
1965 — Beggi, Pierluigi vs Tatai, Stefano — 0-1 — Reggio Emilia ITA
1978 — Nilles, Emile vs Ruefenacht, Matthias — 0-1 — Mitropa Cup
1981 — Andersen, Ib vs Rosell, Percy — 1-0 — Helsingor
1982 — Sprotte, Norbert vs Seppelt, Alfred — 1/2-1/2 — Berlin GER
1989 — Oney, Adil Feridun vs Westerinen, Heikki M.J. — 0-1 — Haifa etc
4…c5 — 4.4% (40 parties)
1950 — Zapata Vinces, Mario vs Letelier Martner, Rene — 1/2-1/2 — Dubrovnik olm
1953 — Bisguier, Arthur B vs Gross, Henry — 0-1 — San Francisco, CA USA
1954 — Mulcahy, Edmond vs Abiolla James — 1-0 — Munich GER
1960 — Geus, William J vs Bagirov, Vladimir — 0-1 — Adelaide AUS
1964 — Bastholm, Joergen vs Horvath, Jozsef M — 0-1 — Bad Kuehlungsborn
4…e6 — 3.2% (29 parties)
1985 — Souren, E. vs Pluymen, J. — 0-1 — Voerendaal
1986 — Aturupane, Harinlal vs Anand, Viswanathan — 0-1 — Dubai olm
1987 — Salaske, Peter vs Eck, W. — 1/2-1/2 — corr DDR
1991 — Noble, Mark Frederick vs Szilagyi, Sandor — 1/2-1/2 — CIF CP1-91-0228B
1996 — Draskovic, Dragan vs Nikolic, Zoran — 1/2-1/2 — Niska Banja