D06o - 4.Qb3 - QGD (1935)

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D06o — QGD (1935)
1.d4 d5 2.c4 Bf5 3.Nf3 e6 4.Qb3
Les coups candidats
4…Nc6 — 76.7% (521 parties)
Ambassadeurs : Pyshkin, Aleksandr Sergeevich (9x), Schumacher, Horst (8x), Rausis, Igors (5x), Buturin, Vladimir (4x), Dearnley, Andrew (4x), Wojtkiewicz, Aleksander (4x), Kostic, Boris (3x), Dorfman, Iossif (3x)
4…b6 — 20.5% (139 parties)
Ambassadeurs : Kitzler, Gerhard (2x), Dernovsek, Karel (1x), Parak, Frantisek (1x), Nemec, Tadeus (1x), Tepper, Frantisek (1x), Burke, Paul (1x), Neufahrt, Gerhard (1x), ? (1x)
4…dxc4 — 1.2% (8 parties)
Ambassadeurs : Morihama, Nicolau (1x), Nowicki, Andrzej (1x), Steenkamp, Johan J. (1x), Pesa, Mofoka Alfred (1x), Trzaska, Peter (1x), Wiechen, Ulrich (1x), Jensen, Kristian Rohde (1x), Jones, Scott C. (1x)
4…Nf6 — 0.7% (5 parties)
Ambassadeurs : Moody, David W (1x), Jackson, James (1x), Phillips, Sean (1x), Sloan, M. (1x), Hammond, Grant P (1x), Rodgers, Douglas (1x), Mudra, Oldrich (1x), Casto, Brett (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…Nc6 4…b6 4…dxc4 4…Nf6
<1800 47 43% 45% 6% 4%
1800-2200 253 71% 26% 2% 0%
2200-2600 229 95% 5% — —
2600+ 3 100% — — —
Évolution par décennie (% des parties)
Décennie N parties 4…Nc6 4…b6 4…dxc4 4…Nf6
1950s 14 93% 7% — —
1960s 5 100% — — —
1970s 12 92% 8% — —
1980s 52 94% 4% — 2%
1990s 202 86% 12% 0% 0%
2000s 182 64% 34% 1% 1%
2010s 170 72% 24% 2% 1%
2020s 42 74% 19% 7% —
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…Nc6 72% 74% ▲ +2.0%
4…b6 24% 19% ▼ -4.5%
4…dxc4 2% 7% ▲ +5.4%
4…Nf6 1% 0% ▼ -1.2%
Joueurs célèbres
Champions du monde dans cette position
Botvinnik, Mikhail — 1 partie
Parties historiques
4…Nc6 — 76.7% (521 parties)
1950 — Nestler, Vincenzo vs Paoli, Enrico — 0-1 — Sorrento ch ITA
1950 — O'Kelly, Albéric de Galway vs Kostic, Boris — 1/2-1/2 — Bled SLO
1950 — Alberic, O'Kelly de Galway vs Kostic, Boris — 1/2-1/2 — It, Bled SLO
1950 — Fuderer, Andrija vs Kostic, Boris — 0-1 — Bled SLO
1951 — Kotlerman, S vs Ali, Zak — 0-1 — ?
4…b6 — 20.5% (139 parties)
1959 — Dernovsek, Karel vs Parak, Frantisek — 1/2-1/2 — Trebic
1979 — Nemec, Tadeus vs Tepper, Frantisek — 1-0 — Bratislava SVK
1988 — ? vs Cray Blitz — 1/2-1/2 — Orlando USA
1989 — Burke, Paul vs Neufahrt, Gerhard — 1/2-1/2 — Vancouver BC CAN
1990 — Johansson, Per 1967 vs Abaya, Jun — 1-0 — Gausdal NOR
4…dxc4 — 1.2% (8 parties)
1997 — Morihama, Nicolau vs Nowicki, Andrzej — 1-0 — IECC email
2002 — Steenkamp, Johan J. vs Pesa, Mofoka Alfred — 1-0 — Centurion
2011 — Trzaska, Peter vs Wiechen, Ulrich — 1/2-1/2 — Herne
2012 — Petrushev, Nikita vs Yakovlev, Yuri S. — 1-0 — St Petersburg RUS
2014 — Jensen, Kristian Rohde vs Jones, Scott C. — 1-0 — ICCF
4…Nf6 — 0.7% (5 parties)
1985 — Moody, David W vs Jackson, James — 1-0 — Dearborn, Mich.
1994 — Phillips, Sean vs Sloan, M. — 1-0 — corr CompuServe
2000 — Hammond, Grant P vs Rodgers, Douglas — 1-0 — ?
2012 — Mudra, Oldrich vs Casto, Brett — 1-0 — LSS
2017 — Madrid, Antonio vs Sandocal, Uezmir — 1-0 — LSS