D29f - 9.Rd1 - QGA: Classical (1925)

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D29f — QGA: Classical (1925)
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.Qe2 b5 8.Bb3 Bb7 9.Rd1
Les coups candidats
Ambassadeurs : Garcia Palermo, Carlos Horacio (11x), Burmakin, Vladimir (8x), Krallmann, Matthias (6x), Gerusel, Mathias (5x), Suetin, Alexey S (5x), Ehlvest, Jaan (5x), ? (5x), Clares Huanca, Danner Saed (5x)
9…Qc7 — 5.2% (54 parties)
Ambassadeurs : Dittmann, Sieghart (1x), Arnold, Dietmar (1x), Gerusel, Mathias (1x), Hittinger, Axel (1x), Makarczyk, Kazimierz (1x), Litmanowicz, Wladyslaw (1x), Sliwa, Bogdan (1x), Drozd, Robert (1x)
9…Qb6 — 3.0% (31 parties)
Ambassadeurs : Lorincz, Istvan (3x), Karkanaqe, Ilir (2x), Hoang, Thanh Trang (2x), Babula, Milan (1x), Kubicek, Antonin (1x), Dittmann, Sieghart (1x), Partyka, Kazimierz (1x), Nickoloff, Bryon (1x)
9…c4 — 1.7% (18 parties)
Ambassadeurs : Mabille, Jean (1x), Bouet, Jean Claude (1x), Lavoisier, Fabrice (1x), Hebrard, Jean Marc (1x), Weyerstrass, Ronald (1x), Rooyakkers, Robert (1x), Pajares , Jonatan (1x), Llabres, Mathias (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9…Nbd7 9…Qc7 9…Qb6 9…c4
<1800 32 100% — — —
1800-2200 271 84% 8% 3% 3%
2200-2600 454 88% 4% 4% 1%
2600+ 16 100% — — —
Évolution par décennie (% des parties)
Décennie N parties 9…Nbd7 9…Qc7 9…Qb6 9…c4
1950s 29 79% 10% 3% —
1960s 66 91% 3% 2% —
1970s 28 93% 4% — 4%
1980s 160 86% 4% 2% 2%
1990s 309 89% 3% 4% 1%
2000s 255 90% 5% 2% 1%
2010s 161 79% 9% 6% 5%
2020s 38 89% 8% — 3%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9…Nbd7 79% 89% ▲ +10.6%
9…Qc7 9% 8% ▼ -1.4%
9…Qb6 6% 0% ▼ -5.6%
9…c4 5% 3% ▼ -2.3%
Joueurs célèbres
Champions du monde dans cette position
Anand, Viswanathan — 2 parties
Parties historiques
9…Nbd7 — 87.1% (911 parties)
1950 — Bolbochan, Julio vs Devos, Paul — 1-0 — Dubrovnik CRO
1951 — Novotelnov, Nikolai vs Flohr, Salo — 1-0 — Moskou ch-URS
1951 — Miguel, Nahuel vs Byrne, Robert E — 1/2-1/2 — New York, NY USA
1951 — Evans, Larry vs Byrne, Robert E — 1-0 — New York, NY USA
1952 — Incutto, Carlos vs Bartis, Gustavo — 0-1 — Buenos Aires ARG
9…Qc7 — 5.2% (54 parties)
1952 — Makarczyk, Kazimierz vs Litmanowicz, Wladyslaw — 1-0 — Katowice POL
1954 — Dittmann, Sieghart vs Arnold, Dietmar — 0-1 — Schkopau
1957 — OBrien, Erik Michael vs Payne, Orville — 1-0 — Santa Rosa Chess Club
1960 — Sliwa, Bogdan vs Drozd, Robert — 1/2-1/2 — Poland ch
1963 — Gerusel, Mathias vs Hittinger, Axel — 1/2-1/2 — Nt Helmbrechts GER
9…Qb6 — 3.0% (31 parties)
1956 — Dittmann, Sieghart vs Partyka, Kazimierz — 1-0 — Moskou olm
1969 — Babula, Milan vs Kubicek, Antonin — 1/2-1/2 — Cihak CSR ch u26
1987 — Vokac, Marek vs Netusil, Miloslav — 1/2-1/2 — Karvina
1988 — Morrison, Lynne G P vs Karkanaqe, Ilir — 1/2-1/2 — Thessaloniki olm
1989 — Nickoloff, Bryon vs Hamilton, Robert — 1/2-1/2 — Canada zt
9…c4 — 1.7% (18 parties)
1972 — Weyerstrass, Ronald vs Rooyakkers, Robert — 1-0 — Laren
1982 — Mabille, Jean vs Bouet, Jean Claude — 0-1 — ?
1982 — Pajares , Jonatan vs Llabres, Mathias — 1-0 — cr.
1987 — Lavoisier, Fabrice vs Hebrard, Jean Marc — 1-0 — Picardie-01ch
1992 — Kurowski, H. vs Bubka, S. — 0-1 — corr ch35-Poland