D28f - 8…cxd4 - QGA: Classical (1957)

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D28f — QGA: Classical (1957)
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.Qe2 b5 8.Bd3 cxd4
Les coups candidats
Ambassadeurs : Rashkovsky, Nukhim N (9x), Neverov, Valeriy (7x), Borisenko, Georgy K (4x), Golz, Werner (4x), Keres, Paul (4x), Portisch, Lajos (4x), Rublevsky, Sergei (4x), Turner, Abe J (3x)
9.Rd1 — 8.8% (39 parties)
Ambassadeurs : Lputian, Smbat (2x), Vladimirov, Yevgeniy (2x), Kruppa, Yuri (2x), Torbin, Kirill (2x), Ilyin, Pavel Egorovich (2x), Pakulla, Rudolf (1x), Golz, Werner (1x), Michenka, Jozef (1x)
9.a4 — 8.4% (37 parties)
Ambassadeurs : Straka, Zdenek (2x), Alexa, Jaroslav (2x), Ljubicic, Leonardo (2x), Ilyin, Pavel Egorovich (2x), Vinchev, Simeon (2x), Quevedo García, Vicente (2x), Konings, Leon (1x), Jonkman, Harmen (1x)
9.Nxd4 — 5.9% (26 parties)
Ambassadeurs : Granda Zuniga, Julio E (3x), Magem Badals, Jordi (2x), Volpert, Larisa (1x), Gaprindashvili, Nona (1x), Simagin, Vladimir (1x), Polugaevsky, Lev (1x), Fuderer, Andrija (1x), Stoltz, Gösta (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9.exd4 9.Rd1 9.a4 9.Nxd4
<1800 16 69% 6% 12% 12%
1800-2200 102 75% 13% 8% 5%
2200-2600 241 76% 8% 10% 6%
2600+ 9 56% 11% 22% 11%
Évolution par décennie (% des parties)
Décennie N parties 9.exd4 9.Rd1 9.a4 9.Nxd4
1950s 16 81% 6% — 12%
1960s 19 95% — — 5%
1970s 5 100% — — —
1980s 51 86% 4% — 10%
1990s 82 85% 5% — 10%
2000s 101 84% 8% 2% 6%
2010s 133 69% 12% 17% 2%
2020s 36 39% 22% 36% 3%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9.exd4 69% 39% ▼ -30.3%
9.Rd1 12% 22% ▲ +10.2%
9.a4 17% 36% ▲ +19.6%
9.Nxd4 2% 3% ▲ +0.5%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 2 parties
Parties historiques
9.exd4 — 77.0% (341 parties)
1950 — Geller, Efim P. vs Alatortsev, Vladimir N. — 1/2-1/2 — Moskou ch-URS
1952 — Bozic, Aleksandar vs Vukovic, Sava — 1/2-1/2 — Belgrade SRB
1952 — Anay Barche vs Keres, Paul — 0-1 — Budapest HUN
1955 — Shocron, Ruben vs Dodero, Emilio — 1-0 — Buenos Aires ARG
1956 — Bertholdt, Dieter vs Golz, Werner — 1-0 — Leipzig ch GDR
9.Rd1 — 8.8% (39 parties)
1957 — Pakulla, Rudolf vs Golz, Werner — 1/2-1/2 — Soemmerda
1987 — Lputian, Smbat vs Vladimirov, Yevgeniy — 0-1 — Sverdlovsk
1987 — Lputian, Smbat vs Vladimirov, Yevgeniy — 0-1 — Sverdlovsk Armed Forces
1993 — Michenka, Jozef vs Sadler, Matthew D — 1/2-1/2 — Clichy tt
1999 — Ibragimov, Ildar vs Baburin, Alexander — 0-1 — London ENG
9.a4 — 8.4% (37 parties)
2001 — Konings, Leon vs Jonkman, Harmen — 1-0 — Amsterdam NED
2007 — Van Dries, Conny vs Pereira dos Santos, Andrea C. — 1/2-1/2 — ICCF
2010 — Wimmer, Jaroslav vs Korchut, Adam — 1-0 — LSS
2013 — Salonen, Jukka vs Razumikhin, Andrey Mikhailovich — 0-1 — LSS
2013 — Jia, Haoxiang vs Estrada Nieto, Julian — 1-0 — Budapest HUN
9.Nxd4 — 5.9% (26 parties)
1952 — Fuderer, Andrija vs Stoltz, Gösta — 1-0 — Belgrade SRB
1957 — Simagin, Vladimir vs Polugaevsky, Lev — 0-1 — Sverdlovsk
1961 — Volpert, Larisa vs Gaprindashvili, Nona — 0-1 — Vrnjacka Banja SRB
1981 — Swic, Waldemar vs Kostyra, Stanislaw — 1/2-1/2 — Lubniewice ch-POL
1986 — Panczyk, Krzysztof vs Szymczak, Zbigniew — 1/2-1/2 — Porabka