D26i - 6…a6 - QGA: Classical (1907)

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D26i — QGA: Classical (1907)
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.Nc3 a6
Les coups candidats
Ambassadeurs : Leitao, Rafael (5x), Lombardy, William J (4x), Bisguier, Arthur B (3x), Krizsany, Laszlo (3x), Debnar, Lubos (3x), Rabiega, Robert (3x), Gomez Jurado, Luis Alberto (3x), ? (3x)
7.a4 — 41.8% (1022 parties)
Ambassadeurs : Ribli, Zoltan (5x), Uhlmann, Wolfgang (3x), Sher, Miron (3x), Hodgson, Julian M (3x), Izsak, Gyula (3x), Kolcak, Marek (3x), Ftacnik, Lubomir (3x), Bielicki, Carlos (2x)
7.dxc5 — 3.9% (95 parties)
Ambassadeurs : Andersson, Ulf (4x), Portisch, Lajos (3x), Bronstein, David I (2x), Adamski, Jan (2x), Radulov, Ivan (2x), Korchnoi, Viktor (2x), Ivkov, Borislav (2x), Nei, Iivo (1x)
7.Bd3 — 3.6% (87 parties)
Ambassadeurs : Portisch, Lajos (4x), Stohl, Igor (2x), Keitlinghaus, Ludger (2x), Savon, Vladimir (2x), Jussupow, Artur (2x), Horvath, Csaba (2x), Baranov, Jury (2x), Grigorian, Levon (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 7.O-O 7.a4 7.dxc5 7.Bd3
<1800 149 42% 46% 3% 4%
1800-2200 850 39% 47% 2% 3%
2200-2600 1066 43% 39% 5% 4%
2600+ 71 45% 27% 8% 7%
Évolution par décennie (% des parties)
Décennie N parties 7.O-O 7.a4 7.dxc5 7.Bd3
1950s 27 70% 19% 4% —
1960s 57 40% 49% 2% 4%
1970s 42 31% 52% 12% —
1980s 133 38% 47% 11% 2%
1990s 419 42% 41% 4% 5%
2000s 800 40% 42% 3% 5%
2010s 636 45% 42% 3% 2%
2020s 330 45% 38% 4% 3%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
7.O-O 45% 45% ▼ -0.6%
7.a4 42% 38% ▼ -4.3%
7.dxc5 3% 4% ▲ +1.0%
7.Bd3 2% 3% +0.4%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Anatoly — 5 parties
Kramnik, Vladimir — 4 parties
Gukesh D — 3 parties
Ju, Wenjun — 2 parties
Carlsen, Magnus — 2 parties
Ding, Liren — 2 parties
Tal, Mikhail — 1 partie
Anand, Viswanathan — 1 partie
Parties historiques
7.O-O — 42.4% (1037 parties)
1950 — Giustolisi, Alberto vs Shainswit, George — 0-1 — Dubrovnik olm
1951 — Tipary, Lajos vs Borloy, Karoly — 1/2-1/2 — HUN-ch
1953 — Ojanen, Kaarle S vs Pilnik, Herman — 1/2-1/2 — Mar del Plata ARG
1953 — Steiner, Lajos vs Goldstein, Maurice Edwards — 1-0 — Hobart
1954 — Idigoras Guisasola, Gregorio vs Martin Martinez, Pedro Jose — 0-1 — Buenos Aires ARG
7.a4 — 41.8% (1022 parties)
1952 — Pytlakowski, Andrzej vs Gawlikowski, Stanislaw — 1-0 — Miedzyzdroje
1955 — Petrosian, Tigran V. vs Bisguier, Arthur B — 1/2-1/2 — Goteborg izt
1956 — Mutina, Antonin vs Skacel, Jan — 0-1 — Bratislava SVK
1958 — Blackstone, John vs Gross, Benjamin — 0-1 — Barbera Santa CA
1959 — Kupka, Slavoj vs Brach, Julius — 1-0 — Bratislava SVK
7.dxc5 — 3.9% (95 parties)
1958 — Ramirez, Hernan vs Martin Martinez, Pedro Jose — 1/2-1/2 — Pereira
1966 — Nei, Iivo vs Bronstein, David I — 0-1 — Tbilisi ch-URS
1970 — Donner, Jan-Hein vs Spassky, Boris V. — 0-1 — Amsterdam NED
1971 — Wade, Robert G vs Myagmarsuren, Lkhamsuren — 0-1 — Tallinn EST
1975 — Hort, Vlastimil vs Bronstein, David I — 1/2-1/2 — Teesside ENG
7.Bd3 — 3.6% (87 parties)
1964 — Stahlberg, Gideon vs Darga, Klaus — 1/2-1/2 — Havana CUB
1967 — Grigorian, Levon vs Bokuchava, Alexander — 0-1 — ?
1989 — Gavrikov, Viktor vs Horvath, Jozsef — 1/2-1/2 — Budapest HUN
1989 — Gavrikov, Alexander vs Horvath, Jan — 1/2-1/2 — Budapest NIC89-06 b
1990 — Jussupow, Artur vs Ribli, Zoltan — 1-0 — Munich GER