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D20o — QGA
1.d4 d5 2.c4 dxc4 3.e4 Nf6 4.e5
Les coups candidats
Ambassadeurs : Karpov, Anatoly (18x), Yakovich, Yuri (17x), Van Wely, Loek (16x), Nikolic, Predrag (15x), Greenfeld, Alon (15x), Korchnoi, Viktor (14x), Alekseenko, Kirill (14x), Andrason, Karl Oddur (13x)
4…Nfd7 — 0.5% (13 parties)
Ambassadeurs : Banikas, Hristos (2x), Nikolaidis, Ioannis NA (2x), Pinasco, Juan Pablo (1x), Zub, Dmitry (1x), Foo, Zhi Rong Benjamin (1x), Gani Zhi Hao, Terry (1x), Santo (1x), D'Emilia, Jack (1x)
4…Ne4 — 0.4% (11 parties)
Ambassadeurs : Anderson, Len (2x), Marous, Roman (1x), Masek, Miroslav (1x), Acevedo, Maria Gisele (1x), Lell, Marianela (1x), Wagner, Katharina (1x), Dorner, Marina (1x), Lemekhov, Yura (1x)
4…Bg4 — 0.2% (5 parties)
Ambassadeurs : Brown, Jonathan (1x), Kopp Jean Raymond (1x), Tiitto Ilja (1x), Birjulin Juri (1x), Schaefer, Alexander (1x), Dinger, Solveig (1x), LeSavouroux, Hervé (1x), Carlier, Pierre (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…Nd5 4…Nfd7 4…Ne4 4…Bg4
<1800 92 88% 5% 3% 2%
1800-2200 610 100% 0%
2200-2600 1549 100% 0%
2600+ 228 100%
Évolution par décennie (% des parties)
Décennie N parties 4…Nd5 4…Nfd7 4…Ne4 4…Bg4
1960s 3 100%
1970s 7 100%
1980s 108 100%
1990s 456 99% 0% 0%
2000s 675 97% 1% 1% 0%
2010s 1041 99% 0% 0% 0%
2020s 399 99% 1% 0%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…Nd5 99% 99% +0.2%
4…Nfd7 0% 1% +0.2%
4…Ne4 0% 0% -0.1%
4…Bg4 0% 0% -0.2%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Anatoly — 10 parties
Anand, Viswanathan — 8 parties
Ding, Liren — 5 parties
Kramnik, Vladimir — 3 parties
Kasparov, Garry — 2 parties
Ju, Wenjun — 2 parties
Karpov, Aleksandr — 1 partie
Botvinnik, Mikhail — 1 partie
Carlsen, Magnus — 1 partie
Parties historiques
4…Nd5 — 98.7% (2653 parties)
1960 — Mititelu, Gheorghe vs Clarke, Peter — 1/2-1/2 — Budapest HUN
1961 — Gheorghiu, Florin vs Pfleger, Helmut, Dr. — 1/2-1/2 — The Hague NED
1967 — Korchnoi, Viktor vs Suetin, Alexey S — 1-0 — Budva MNE
1973 — Avner, Uri vs Rosenberg, Arie — 0-1 — Netanya ISR
1974 — Wall, Bill vs Barton, Steve — 1/2-1/2 — ?
4…Nfd7 — 0.5% (13 parties)
1998 — Banikas, Hristos vs Nikolaidis, Ioannis NA — 1/2-1/2 — Athens GRE
1999 — Pinasco, Juan Pablo vs Zub, Dmitry — 1-0 — IECG
2002 — Foo, Zhi Rong Benjamin vs Gani Zhi Hao, Terry — 1-0 — Singapore SIN
2002 — Banikas, Hristos vs Nikolaidis, Ioannis NA — 1/2-1/2 — Ikaria
2005 — Zychowski, Antoine vs Kohi, Armand — 1-0 — France
4…Ne4 — 0.4% (11 parties)
1996 — Acevedo, Maria Gisele vs Lell, Marianela — 1-0 — Cascavel
1997 — Marous, Roman vs Masek, Miroslav — 1-0 — Svetla nad Sazavou
2004 — Wagner, Katharina vs Dorner, Marina — 0-1 — GER
2007 — Lemekhov, Yura vs Herrero Marco, Ramon — 1-0 — ?
2009 — Merkin, German vs Ivanov, Vladislav — 1-0 — Varna BUL
4…Bg4 — 0.2% (5 parties)
2002 — Schaefer, Alexander vs Dinger, Solveig — 1-0 — ?
2003 — Brown, Jonathan vs Kopp Jean Raymond — 1-0 — ?
2004 — Tiitto Ilja vs Birjulin Juri — 1-0 — Helsinki We HSL
2012 — LeSavouroux, Hervé vs Carlier, Pierre — 1-0 — ICCF
2016 — Volkmann, Andre Jordi vs Dos Santos, Felipe Gabriel — 1-0 — Florianopolis BRA