E03f - 7.Nf3 - Open (1950)

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E03f — Open (1950)
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Qa4+ Nbd7 6.Qxc4 c5 7.Nf3
Les coups candidats
Ambassadeurs : Szekely, Peter (4x), Andersson, Ulf (3x), Smyslov, Vasily (3x), Langeweg, Kick (3x), Inkiov, Ventzislav (3x), Saduakassova, Dinara (3x), Gromov, Sergey Vasilievich (3x), Schneider, Lars-Ake (2x)
7…Nb6 — 12.2% (40 parties)
Ambassadeurs : Martin M Pereira (2x), Toran Albero, Roman (1x), Dunkelblum, Arthur (1x), Flores, Ranz Kirby Anthony (1x), Donner, Jan-Hein (1x), Seoev, Robert (1x), Anokhin, Alexander (1x), Tozer, Richard J D (1x)
7…cxd4 — 2.8% (9 parties)
Ambassadeurs : Baines, J Harry (1x), Cafferty, Bernard (1x), Taylor, Timothy (1x), Springall, J. (1x), Johnston, Allan (1x), Clark, Richard I (1x), Johansson, Viktoria (1x), Geldiyeva, Mahri (1x)
7…b6 — 2.8% (9 parties)
Ambassadeurs : Morcillo Holgado, Melchor (2x), Karpov, Anatoly (1x), Ljubojevic, Ljubomir (1x), Kozlov, Vladimir N (1x), Mikhalchishin, Adrian (1x), Ftacnik, Lubomir (1x), Mitkov, Marjan (1x), Tago, Shunnichi (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 7…a6 7…Nb6 7…cxd4 7…b6
<1800 17 71% 12% — 6%
1800-2200 106 69% 22% 1% 2%
2200-2600 158 87% 6% 3% 2%
2600+ 12 92% — — 8%
Évolution par décennie (% des parties)
Décennie N parties 7…a6 7…Nb6 7…cxd4 7…b6
1950s 11 55% 27% 9% —
1960s 3 67% 33% — —
1970s 12 92% — — 8%
1980s 26 85% 12% — 4%
1990s 39 92% 5% 3% —
2000s 65 66% 15% 3% 8%
2010s 80 71% 19% 5% 1%
2020s 91 86% 7% 1% 1%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
7…a6 71% 86% ▲ +14.5%
7…Nb6 19% 7% ▼ -12.2%
7…cxd4 5% 1% ▼ -3.9%
7…b6 1% 1% -0.2%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Anatoly — 1 partie
Smyslov, Vladimir — 1 partie
Parties historiques
7…a6 — 78.0% (255 parties)
1950 — Alatortsev, Vladimir N. vs Flohr, Salo — 1/2-1/2 — Moscow RUS
1950 — Anay Barche vs Kluger, Gyula — 1-0 — Budapest HUN
1952 — Smyslov, Vasily vs Evans, Larry — 1-0 — Helsinki olm
1954 — Golovko Nikolay Grigorievic vs Madaminov, Mukhiddin — 1-0 — ?
1954 — Golovko, N. vs Mukhitdinov, Akmalkhon — 1-0 — Riga ch-SU tt
7…Nb6 — 12.2% (40 parties)
1950 — Dunkelblum, Arthur vs Flores, Ranz Kirby Anthony — 1/2-1/2 — Dubrovnik olm
1955 — Toran Albero, Roman vs Martin M Pereira — 1-0 — Buenos Aires ARG
1955 — Donner, Jan-Hein vs Martin M Pereira — 1-0 — Buenos Aires ARG
1967 — Seoev, Robert vs Anokhin, Alexander — 1/2-1/2 — Moscow RUS
1984 — Pigusov, Evgeny vs Korzubov, Peter — 1-0 — Vilnius LTU
7…cxd4 — 2.8% (9 parties)
1953 — Baines, J Harry vs Cafferty, Bernard — 1/2-1/2 — ?
1995 — Taylor, Timothy vs Springall, J. — 1-0 — corr Tch-GB
2006 — Johansson, Viktoria vs Geldiyeva, Mahri — 1/2-1/2 — Turin ITA
2008 — Johnston, Allan vs Clark, Richard I — 1-0 — ICCF
2010 — Korchmar, Vasiliy vs Petukhov, Dmitry — 0-1 — Saratov RUS
7…b6 — 2.8% (9 parties)
1978 — Kozlov, Vladimir N vs Mikhalchishin, Adrian — 1/2-1/2 — Ordzhonikidze
1983 — Karpov, Anatoly vs Ljubojevic, Ljubomir — 1/2-1/2 — Tilburg NED
2000 — Ftacnik, Lubomir vs Mitkov, Marjan — 1-0 — Lisbon POR
2007 — Paci, Cedric vs Giffard, Nicolas — 1/2-1/2 — Clichy FRA
2008 — Tago, Shunnichi vs Morcillo Holgado, Melchor — 0-1 — ICCF