D37p - 8.a3 - Classical (1964)

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D37p — Classical (1964)
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 Be7 5.Bf4 O-O 6.e3 c5 7.dxc5 Bxc5 8.a3
Les coups candidats
8…Nc6 — 87.6% (2038 parties)
Ambassadeurs : Van Wely, Loek (24x), Beliavsky, Alexander G (19x), Short, Nigel D (16x), Kramnik, Vladimir (16x), Nielsen, Peter Heine (16x), Stohl, Igor (12x), Lutz, Christopher (12x), Quinones Borda Jorge Victor (12x)
8…dxc4 — 5.5% (129 parties)
Ambassadeurs : Lechtynsky, Jiri (5x), Prandstetter, Eduard (5x), Miles, Anthony J (3x), Suba, Mihai (3x), Portisch, Lajos (2x), Spassky, Boris V. (2x), Li, Zunian (2x), Behling, Robert (2x)
8…a6 — 2.6% (61 parties)
Ambassadeurs : Stohl, Igor (2x), Caoili, Arianne (2x), Gottschling, Stefan, Dr. (2x), Bus, Mariusz (1x), Brynell, Stellan (1x), Ostersen, Kjeld (1x), Hakulinen, Esko-Matti (1x), Aahan Sarin (1x)
8…a5 — 1.5% (34 parties)
Ambassadeurs : Ivkov, Borislav (2x), Ziska, Bogi (1x), Jensen, Vagn (1x), Todorovic, Goran N (1x), Cardoso Contreras, Santiago (1x), Deuster, Heinz-Juergen (1x), Roldan, Antonio Jose (1x), Castillo, German (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 8…Nc6 8…dxc4 8…a6 8…a5
<1800 89 84% 6% 2% 3%
1800-2200 637 86% 5% 4% 2%
2200-2600 1254 87% 6% 3% 1%
2600+ 171 98% 1% — —
Évolution par décennie (% des parties)
Décennie N parties 8…Nc6 8…dxc4 8…a6 8…a5
1960s 16 62% 38% — —
1970s 19 74% 11% — —
1980s 119 73% 17% 3% 3%
1990s 352 89% 3% 3% 2%
2000s 661 90% 5% 2% 2%
2010s 810 89% 4% 3% 1%
2020s 350 86% 7% 4% 1%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
8…Nc6 89% 86% ▼ -3.3%
8…dxc4 4% 7% ▲ +2.3%
8…a6 3% 4% ▲ +1.3%
8…a5 1% 1% ▼ -0.9%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Anatoly — 10 parties
Kramnik, Vladimir — 10 parties
Carlsen, Magnus — 8 parties
Kasparov, Garry — 4 parties
Anand, Viswanathan — 4 parties
Botvinnik, Mikhail — 2 parties
Ding, Liren — 2 parties
Ju, Wenjun — 2 parties
Parties historiques
8…Nc6 — 87.6% (2038 parties)
1962 — Petrosian, Tigran V. vs Filip, Miroslav — 1-0 — Curacao ct
1964 — Portisch, Lajos vs Berger, Bela — 1-0 — Amsterdam izt
1964 — Benko, Pal vs Berger, Thomas — 1/2-1/2 — Amsterdam NED
1965 — Ivkov, Borislav vs Ayasofya Medina — 1-0 — Beverwijk NED
1965 — Dely, Peter vs Polgar, Istvan — 1/2-1/2 — HUN
8…dxc4 — 5.5% (129 parties)
1964 — Petrosian, Tigran V. vs Olivera, Alfredo — 1-0 — Buenos Aires ARG
1964 — Portisch, Lajos vs Darga, Klaus — 1-0 — Havana CUB
1965 — Portisch, Lajos vs Stahlberg, Gideon — 1/2-1/2 — Erevan ARM
1965 — Gipslis, Aivars vs Marovic, Drazen — 1/2-1/2 — Zagreb CRO
1966 — Ivkov, Borislav vs Ciric, Dragoljub M — 1-0 — Sarajevo BIH
8…a6 — 2.6% (61 parties)
1982 — Brynell, Stellan vs Ostersen, Kjeld — 1-0 — DEN-chJ int Soro
1985 — Stohl, Igor vs Franzen, Jozef — 1-0 — Stary Smokovec SVK
1988 — Stohl, Igor vs Bus, Mariusz — 1-0 — Hradec Kralove CZE
1988 — Hakulinen, Esko-Matti vs Aahan Sarin — 1/2-1/2 — JSM KSY-SSK
1990 — Kallai, Gabor vs Sofrygin, Alexey — 1/2-1/2 — Lenk SUI
8…a5 — 1.5% (34 parties)
1980 — Ivkov, Borislav vs Todorovic, Goran N — 1/2-1/2 — Zemun
1988 — Ziska, Bogi vs Jensen, Vagn — 1-0 — Aarhus DEN
1989 — Cardoso Contreras, Santiago vs Deuster, Heinz-Juergen — 1/2-1/2 — ICCF
1990 — Letelier Martner, Rene vs Clement Gomez, Jose Antonio — 1/2-1/2 — Mar del Plata ARG
1995 — Ivkov, Borislav vs Ruiz Gutierrez, Manuel — 1/2-1/2 — Cordoba ARG