D26d - 6.O-O - QGA (1928)

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D26d — QGA (1928)
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 a6 6.O-O
Les coups candidats
Ambassadeurs : Volodarsky, Yury Aleksandrovich (66x), Karjakin, Sergey (36x), Belenkaya, Dina (32x), Vladimirov, Yevgeniy (22x), Velikov, Petar (22x), Thiel, Kay (22x), Sadler, Matthew D (19x), Varga, Zoltan (19x)
Ambassadeurs : Postny, Evgeny (28x), Jonkman, Harmen (16x), Sulava, Nenad (12x), Varga, Zoltan (12x), Karpatchev, Aleksandr (12x), Hirschberg, Valerian (11x), Marzano, Carlo (11x), Raetsky, Alexander (10x)
6…Nbd7 — 6.6% (435 parties)
Ambassadeurs : Guliyev, Namig (25x), Markowski, Tadeusz (11x), Danielyan, Vahe (11x), Itkis, Boris (8x), Markowski, Tomasz (7x), Jaracz, Pawel (6x), Vrencian, Lehel (6x), Guliyev, Nadir (6x)
6…Be7 — 2.4% (161 parties)
Ambassadeurs : Ravikumar, Vaidyanathan (2x), Gustafsson, Jan (2x), Holtackers, Daan (2x), Kiss, Pal (2x), Varga, Peter (2x), Castanier, Carl (2x), Bortnyk, Mykola (2x), Teschner, Rudolf (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 6…c5 6…b5 6…Nbd7 6…Be7
<1800 234 55% 33% 9% 3%
1800-2200 1807 64% 27% 5% 3%
2200-2600 3896 71% 20% 7% 2%
2600+ 286 79% 7% 9% 4%
Évolution par décennie (% des parties)
Décennie N parties 6…c5 6…b5 6…Nbd7 6…Be7
1950s 78 81% 18% — 1%
1960s 72 79% 14% 7% —
1970s 33 58% 36% 3% 3%
1980s 183 91% 7% 1% 1%
1990s 807 82% 13% 2% 2%
2000s 1610 71% 20% 7% 2%
2010s 2295 64% 26% 9% 1%
2020s 1531 65% 23% 7% 5%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
6…c5 64% 65% ▲ +1.5%
6…b5 26% 23% ▼ -2.9%
6…Nbd7 9% 7% ▼ -1.8%
6…Be7 1% 5% ▲ +3.5%
Joueurs célèbres
Champions du monde dans cette position
Gukesh D — 10 parties
Karpov, Anatoly — 9 parties
Anand, Viswanathan — 6 parties
Kramnik, Vladimir — 5 parties
Carlsen, Magnus — 4 parties
Botvinnik, Mikhail — 2 parties
Hou, Yifan — 2 parties
Ding, Liren — 1 partie
Parties historiques
6…c5 — 69.1% (4567 parties)
1950 — Gereben, Erno vs Sebestyen, Balazs — 1-0 — Budapest HUN
1950 — Bolbochan, Julio vs Devos, Paul — 1-0 — Dubrovnik CRO
1950 — Van den Berg, Cees vs Van Steenis, Ir — 1-0 — Leiden NED
1950 — Pirc, Vasja vs Pilnik, Herman — 1/2-1/2 — Bled SLO
1950 — MULLER vs Kramer, Gerald — 1/2-1/2 — Dubrovnik olm
6…b5 — 21.6% (1429 parties)
1951 — Jackson, John Alexander vs Eikrem, Arnold — 1/2-1/2 — Birmingham/Coventry
1951 — Bouwmeester, Hans vs Van Steenis, Hendrik Jan — 0-1 — Detmold
1952 — Ciejka, Tadeusz vs Regedzinski, Teodor — 1/2-1/2 — Katowice POL
1953 — Cafferty, Bernard vs Owen, HJ. — 1/2-1/2 — Kipping CC Wolverhampton
1954 — Sherwin, James T vs Mengarini, Ariel — 1-0 — New York ch-USA
6…Nbd7 — 6.6% (435 parties)
1965 — Taimanov, Mark vs Mikenas, Alius — 1-0 — URS
1966 — Oestreich, Reinhard vs Werner, Stephan — 1-0 — Detmold
1966 — Kunsztowicz, Uwe vs Werner, Stephan — 1-0 — It Detmold GER
1967 — Liberzon, Vladimir M vs Nurmamedov, Mammed — 1-0 — USSR
1969 — Oestreich, Reinhard vs Werner, Stephan — 1/2-1/2 — Steinheim
6…Be7 — 2.4% (161 parties)
1953 — Teschner, Rudolf vs Werner, Stephan — 1-0 — Berlin West
1979 — Haik, Aldo vs Ravikumar, Vaidyanathan — 1-0 — Londen open
1982 — Plaskett, H James vs Ravikumar, Vaidyanathan — 1-0 — Esbjerg DEN
1985 — Guerra, Joaquim vs Rosa, Jose Antonio — 1/2-1/2 — BRA-ch 52th Brasilia BRA
1990 — Madrid Sole, Antonio vs Kaufmann, Juergen — 0-1 — ?