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D15b —
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 Bf5 5.Qb3
Les coups candidats
5…Qb6 — 60.3% (725 parties)
Ambassadeurs : Roeder, Gerd, Dr. (5x), Roeder, Frank (5x), Tipary, Lajos (4x), Mufic, Goran (4x), Biosca Lacasa, Jordi (4x), Aldrich, Jeff (3x), Chladek, Vaclav (3x), Bosque Ortega, Xavier (3x)
5…b6 — 23.9% (287 parties)
Ambassadeurs : Simon, Tamas (2x), Briem, Stephan (2x), Rubinstein, Akiba (1x), Georges Koltanowski (1x), Zapoleon, LB. (1x), Lovell, Ahron (1x), Clarke, E.J.. (1x), Griffith, RB. (1x)
5…Bc8 — 4.8% (58 parties)
Ambassadeurs : Blumin, Boris (1x), Wachira Wilson (1x), Doerrenbach, Klaus (1x), Luigs, C. (1x), Kaposztas, Miklos (1x), Toth, Peter (1x), Amer, Mohamed (SUD) (1x), De Castro, Edgar (1x)
5…Qd7 — 4.2% (50 parties)
Ambassadeurs : Boukobza, Adrien (2x), Wendling, Jerome (2x), Huebner, Robert (1x), Pfleger, Doina (1x), Verstraten, Jan (1x), Reenaers Jan (1x), Morris, Gareth (1x), Roe, Simon J (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 5…Qb6 5…b6 5…Bc8 5…Qd7
<1800 120 48% 29% 3% 9%
1800-2200 544 65% 24% 4% 3%
2200-2600 166 87% 8% 3% 1%
2600+ 1 100%
Évolution par décennie (% des parties)
Décennie N parties 5…Qb6 5…b6 5…Bc8 5…Qd7
1900s 1 100%
1910s 3 33% 67%
1920s 10 90% 10%
1930s 6 83% 17%
1940s 4 100%
1950s 7 86% 14%
1960s 2 100%
1970s 9 22% 56% 11% 11%
1980s 36 67% 28% 6%
1990s 187 56% 26% 6% 4%
2000s 432 57% 27% 6% 4%
2010s 470 63% 22% 3% 5%
2020s 35 63% 9% 6% 6%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
5…Qb6 63% 63% ▼ -0.5%
5…b6 22% 9% ▼ -13.1%
5…Bc8 3% 6% ▲ +2.5%
5…Qd7 5% 6% ▲ +0.8%
Joueurs célèbres
Champions du monde dans cette position
Alekhine, Alexander — 1 partie
Euwe, Max — 1 partie
Parties historiques
5…Qb6 — 60.3% (725 parties)
1900 — Schlechter, Carl vs Halprin, Alexander — 1-0 — Munich GER
1916 — Janowski, Dawid vs Capablanca, Jose — 0-1 — New York, NY USA
1920 — Saemisch, Friedrich vs Von Hennig, Heinrich — 1/2-1/2 — Goteborg SWE
1921 — Prokes, Ladislav vs Schulz, Jale — 1-0 — Brno Morava
1922 — Opocensky, Karel vs Treybal, Karel — 0-1 — Bad Pistyan CZE
5…b6 — 23.9% (287 parties)
1915 — Zapoleon, LB. vs Lovell, Ahron — 0-1 — USA
1916 — Clarke, E.J.. vs Griffith, RB. — 1/2-1/2 — Cali
1924 — Rubinstein, Akiba vs Georges Koltanowski — 1-0 — Meran ITA
1970 — Stevenson, PM. vs Jasiewicz, M. — 1-0 — Manchester ENG
1972 — Spillane, Tony vs Coveney, Maurice J. — 1-0 — Dublin IRL
5…Bc8 — 4.8% (58 parties)
1936 — Blumin, Boris vs Wachira Wilson — 1-0 — Toronto CAN
1953 — Doerrenbach, Klaus vs Luigs, C. — 1-0 — Soest NED
1976 — Griffiths, Peter C vs Orford, RL. — 1-0 — ?
1980 — Kaposztas, Miklos vs Toth, Peter — 1-0 — Salgotarjan
1988 — Amer, Mohamed (SUD) vs De Castro, Edgar — 1-0 — Thessaloniki GRE
5…Qd7 — 4.2% (50 parties)
1978 — Huebner, Robert vs Pfleger, Doina — 1-0 — Hamburg GER
1994 — Verstraten, Jan vs Reenaers Jan — 0-1 — Lommel
1996 — Morris, Gareth vs Roe, Simon J — 1/2-1/2 — Cardiff WLS
1997 — Goertz, Frank vs Seefluth, Horst, Dr. — 1-0 — Mecklenburg VP
1998 — Blagojevic, Vlado vs Sasa, L. — 1-0 — Strunjan