D28i - 8…Nc6 - QGA: Classical (1952)

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D28i — QGA: Classical (1952)
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.Qe2 b5 8.Bb3 Nc6
Les coups candidats
Ambassadeurs : Spiller, Arthur R (1x), Albert, Gerhard (1x), Spassky, Boris V. (1x), Kots, Yuri I (1x), Bartuszat, Fritz (1x), Kuhn, Paul (1x), Weinstein, Raymond (1x), McCormick, Alan (1x)
9.a4 — 29.7% (22 parties)
Ambassadeurs : Hera, Imre Jr. (2x), Steiner, Herman (1x), Evans, Larry (1x), Meskanen, Vesa (1x), Medvedkov, Anton (1x), Slipak, Sergio (1x), Fuentes, Alberto (1x), Ster, Peter (1x)
Ambassadeurs : Stenborg, Ake (1x), Partyka, Kazimierz (1x), Hsu Thiri May (1x), Zimny, Jakub (1x), Pascute, Bruce (1x), Geib Steven (1x), Uchitel, Stas (1x), Medvedkov, Anton (1x)
9.dxc5 — 9.5% (7 parties)
Ambassadeurs : Hapuajo (1x), Alanen, Leevi (1x), Vladimirov, Boris T (1x), Kapeljus, Lazar (1x), Zdrazil, Bohumir (1x), Both, Lajos (1x), Peric, Slavisa (1x), Daniilidis, Aris (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9.Nc3 9.a4 9.Rd1 9.dxc5
<1800 5 60% 20% 20% —
1800-2200 22 32% 41% 14% 14%
2200-2600 28 29% 36% 21% 11%
Évolution par décennie (% des parties)
Décennie N parties 9.Nc3 9.a4 9.Rd1 9.dxc5
1950s 5 60% 20% 20% —
1960s 3 67% — 33% —
1970s 2 100% — — —
1980s 7 86% — — 14%
1990s 11 36% 18% 18% 18%
2000s 21 29% 38% 24% 5%
2010s 17 41% 29% 18% 12%
2020s 8 12% 75% — 12%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9.Nc3 41% 12% ▼ -28.7%
9.a4 29% 75% ▲ +45.6%
9.Rd1 18% 0% ▼ -17.6%
9.dxc5 12% 12% ▲ +0.7%
Parties historiques
9.Nc3 — 41.9% (31 parties)
1951 — O'Kelly, Albéric de Galway vs Evans, Larry — 1/2-1/2 — New York, NY USA
1954 — Bartuszat, Fritz vs Kuhn, Paul — 0-1 — Meerane
1957 — Weinstein, Raymond vs McCormick, Alan — 1-0 — New York, NY USA
1962 — Spassky, Boris V. vs Kots, Yuri I — 1/2-1/2 — Yerevan Ch URS
1968 — Spiller, Arthur R vs Albert, Gerhard — 1-0 — Aspen US op
9.a4 — 29.7% (22 parties)
1952 — Steiner, Herman vs Evans, Larry — 0-1 — USA
1997 — Meskanen, Vesa vs Medvedkov, Anton — 0-1 — Jyvaskyla FIN
1997 — Slipak, Sergio vs Fuentes, Alberto — 1-0 — Boca ARG
2000 — Ster, Peter vs Riepe, Bernhard — 0-1 — ?
2001 — Pira, Davoud vs Chokbengboun, Thomas — 1-0 — St-Chely d'Aubrac FRA
9.Rd1 — 16.2% (12 parties)
1957 — Stenborg, Ake vs Partyka, Kazimierz — 1-0 — Dublin zt
1964 — Hsu Thiri May vs Zimny, Jakub — 1-0 — corr Eberhardt-Wilhelm
1997 — Uchitel, Stas vs Medvedkov, Anton — 1-0 — St Petersburg RUS
1998 — Pascute, Bruce vs Geib Steven — 0-1 — ?
2004 — Dzevlan, Miralem vs Loven, Anders — 1/2-1/2 — Stockholm/Eksjo SWE
9.dxc5 — 9.5% (7 parties)
1989 — Hapuajo vs Alanen, Leevi — 0-1 — corr SF
1997 — Vladimirov, Boris T vs Kapeljus, Lazar — 0-1 — Voronezh RUS
1999 — Zdrazil, Bohumir vs Both, Lajos — 1-0 — Slovakia
2000 — Peric, Slavisa vs Daniilidis, Aris — 1/2-1/2 — Tm FRA 2nd Groupe Su
2011 — Yip, Michael vs Kalmar, Karoly — 1-0 — Budapest HUN