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D20s — QGA:
1.d4 d5 2.c4 dxc4 3.e4 c5
Eval: [+0.55]
Les coups candidats
Ambassadeurs : Afek, Yochanan (20x), Gyimesi, Zoltan (16x), Polgar, Susan (15x), Lev, Ronen (13x), Spangenberg, Hugo (12x), Ehlvest, Jaan (9x), Cifuentes Parada, Roberto (9x), Vaulin, Alexander P. (8x)
Ambassadeurs : Krizsany, Laszlo (4x), Chetverik, Maxim (4x), Partos, Charles (3x), Winants, Luc (3x), Karolyi, Tibor (3x), Arkell, Keith C (3x), Estrada Nieto, Julian (3x), Schroll, Gerhard (3x)
4.Qa4+ — 0.7% (8 parties)
Ambassadeurs : Boskova, Herta (1x), Krupkova, Petra (1x), Koski, Pekka (1x), Parkkinen, Jyrki (1x), Ganske, Franka (1x), Sonnenberger, Joerg (1x), Della Nina, Carlos (1x), Salvatore, Lucas (1x)
4.Bxc4 — 0.4% (5 parties)
Ambassadeurs : Meyer, Thomas (1x), Koegler, Rene (1x), Huszar, Reka (1x), Bene, Zoltan (1x), Checa, Nicolas (1x), Davidson, Eric (1x), Stroganova, Karina (1x), Cherepov, Alexej (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4.d5 4.Nf3 4.Qa4+ 4.Bxc4
<1800 26 85% 15%
1800-2200 240 82% 15% 2% 1%
2200-2600 678 85% 15%
2600+ 49 84% 16%
Évolution par décennie (% des parties)
Décennie N parties 4.d5 4.Nf3 4.Qa4+ 4.Bxc4
1840s 1 100%
1920s 1 100%
1940s 1 100%
1950s 1 100%
1960s 17 53% 47%
1970s 26 69% 31%
1980s 83 76% 23%
1990s 433 85% 13% 1% 0%
2000s 333 82% 16% 1% 1%
2010s 233 84% 14% 0% 1%
2020s 76 89% 9%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4.d5 84% 89% ▲ +5.8%
4.Nf3 14% 9% ▼ -5.0%
4.Qa4+ 0% 0% -0.4%
4.Bxc4 1% 0% ▼ -0.9%
Joueurs célèbres
Champions du monde dans cette position
Anand, Viswanathan — 4 parties
Karpov, Aleksandr — 2 parties
Kramnik, Vladimir — 2 parties
Kasparov, Garry — 2 parties
Smyslov, Vladimir — 1 partie
Karpov, Anatoly — 1 partie
Euwe, Max — 1 partie
Carlsen, Magnus — 1 partie
Ju, Wenjun — 1 partie
Parties historiques
4.d5 — 82.7% (997 parties)
1840 — Mayet, Carl vs Von Bilguer, Paul — 0-1 — Berlin GER
1956 — Nei, Iivo vs Arulaid, Alexander — 1-0 — Tallinn EST
1961 — Ghitescu, Theodor vs Filip, Miroslav — 1/2-1/2 — Marianske Lazne
1961 — Buslaev, Aleksander vs Roizman, Michael — 1/2-1/2 — Batumi GEO
1961 — Keres, Paul Petrovich vs Johansson Rexner, Melker — 1/2-1/2 — Stockholm Stockholm SWE
4.Nf3 — 15.5% (187 parties)
1928 — Capablanca, Jose vs Rubinstein, Akiba — 1/2-1/2 — Bad Kissingen GER
1946 — Stoltz, Gabriel vs Muhring, Willem Jan — 1/2-1/2 — Zaanstreek
1962 — Lengyel, Laszlo vs Portisch, Lajos — 1/2-1/2 — Budapest HUN
1964 — Taimanov, Mark vs Nei, Iivo — 1-0 — Moscow RUS
1965 — Ghitescu, Theodor vs Smyslov, Vladimir — 1/2-1/2 — Hamburg GER
4.Qa4+ — 0.7% (8 parties)
1994 — Boskova, Herta vs Krupkova, Petra — 1/2-1/2 — Chrudim ch CZE w
1996 — Lenkey, Pal vs Dekker, Teus — 0-1 — Zalakaros open
1997 — Koski, Pekka vs Parkkinen, Jyrki — 0-1 — Oulu
1999 — Ganske, Franka vs Sonnenberger, Joerg — 1-0 — Mecklenburg VP
1999 — Della Nina, Carlos vs Salvatore, Lucas — 0-1 — San Fernando CSF-ch Primera
4.Bxc4 — 0.4% (5 parties)
1996 — Meyer, Thomas vs Koegler, Rene — 0-1 — Tuebingen
2004 — Huszar, Reka vs Bene, Zoltan — 1/2-1/2 — HUN
2009 — Checa, Nicolas vs Davidson, Eric — 0-1 — ?
2015 — Secondi, Alberto vs Levin, Jeffrey — 0-1 — ICCF
2018 — Stroganova, Karina vs Cherepov, Alexej — 0-1 — Minsk BLR