E31a — Leningrad Main Line
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Bg5 h6 5.Bh4 c5 6.d5 d6
Les coups candidats
Ambassadeurs : Rain, Ricardo Ernesto (54x), Zylla, Johannes (32x), Timman, Jan H (15x), Rogozenco, Dorian (11x), Bangiev, Alexander (8x), Comas Fabrego, Lluis (8x), Suba, Mihai (7x), Stettler, Michael (6x)
7.f3 — 6.6% (87 parties)
Ambassadeurs : Grego, Luis Gonzaga (4x), Bagirov, Vladimir (3x), Grego, Luís José Gonzaga (3x), Gast, Jonathan (2x), Jaunooby, Ali R (2x), Peng, Hongchi (2x), Piskov, Kamen (1x), Chipev Teodor (1x)
7.Rc1 — 3.5% (46 parties)
Ambassadeurs : Kunsztowicz, Uwe (5x), Melander, Birger (2x), Gebreslase Simon Naod (2x), Pesantes, Carlos (2x), Granda Zuniga, Julio E (2x), Gurgenidze, Bukhuti (1x), Averbakh, Yuri L (1x), Golz, Werner (1x)
7.Nf3 — 1.7% (23 parties)
Ambassadeurs : Blondel, Francis (2x), Mah Jabeen, Sylvia (1x), Mills, Natalie (1x), Stull, Norbert (1x), Sloth, Jorn (1x), Schawelka, Karl (1x), Kirschneck, Erich, Dr. (1x), Dacalor, Aurelie (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 7.e3 7.f3 7.Rc1 7.Nf3
<1800 17 76% 6% 6%
1800-2200 314 82% 9% 4% 3%
2200-2600 613 90% 5% 2% 1%
2600+ 17 100%
Évolution par décennie (% des parties)
Décennie N parties 7.e3 7.f3 7.Rc1 7.Nf3
1940s 1 100%
1950s 28 71% 4% 11%
1960s 43 77% 19%
1970s 84 82% 2% 8% 2%
1980s 157 83% 6% 6% 1%
1990s 341 87% 6% 4% 2%
2000s 314 86% 5% 3% 2%
2010s 309 86% 7% 2% 2%
2020s 43 81% 16% 2%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
7.e3 86% 81% ▼ -4.4%
7.f3 7% 16% ▲ +9.2%
7.Rc1 2% 0% ▼ -1.6%
7.Nf3 2% 2% +0.1%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Aleksandr — 1 partie
Karpov, Anatoly — 1 partie
Smyslov, Vladimir — 1 partie
Hou, Yifan — 1 partie
Parties historiques
7.e3 — 84.7% (1118 parties)
1942 — Guimard, Carlos E vs Corte, Cesar J — 1-0 — Mar del Plata ARG
1952 — Keres, Paul vs O'Kelly de Galway, Alberic — 1/2-1/2 — Budapest HUN
1952 — Steiner, Herman vs Evans, Larry — 0-1 — ?
1953 — Fuderer, Andrija vs Matanovic, Aleksandar — 0-1 — Opatija
1953 — Steiner, Heinrich Jun. vs Carvalho Da Costa, Fabiano — 1-0 — Mar del Plata ARG
7.f3 — 6.6% (87 parties)
1953 — Wade, Robert G vs Donner, Jan-Hein — 0-1 — Opatija
1960 — Piskov, Kamen vs Chipev Teodor — 0-1 — Sofia BUL
1960 — Bagirov, Vladimir vs Vistaneckis, Isakas — 1-0 — Vilnius LTU
1960 — Antoshin, Vladimir S vs Cherepkov, Alexander V — 0-1 — Vilnius LTU
1962 — Bagirov, Vladimir vs Mukhitdinov, Mamadzhan — 1/2-1/2 — URS-ch30 sf Novosibirsk
7.Rc1 — 3.5% (46 parties)
1954 — Steiner, Herman vs Cross, Robert Gary — 1-0 — SF/LA, CA
1959 — Gurgenidze, Bukhuti vs Averbakh, Yuri L — 1/2-1/2 — Tbilisi ch-URS
1959 — Golz, Werner vs Taimanov, M. — 0-1 — Dresden GER
1972 — Kunsztowicz, Uwe vs Weise, Daniel, Dr. — 1-0 — Oberursel
1972 — Kunsztowicz, Uwe vs Suess, Alois — 1-0 — Oberursel
7.Nf3 — 1.7% (23 parties)
1972 — Stull, Norbert vs Sloth, Jorn — 0-1 — Skopje MKD
1973 — Schawelka, Karl vs Kirschneck, Erich, Dr. — 1/2-1/2 — Krumbach
1988 — Mah Jabeen, Sylvia vs Mills, Natalie — 0-1 — Adelaide AUS
1991 — Gomez, Leonidas vs Slipak, Sergio — 0-1 — Buenos Aires ARG
1991 — Pina Requejo, Victor Manuel vs Valiente, Cristobal — 0-1 — Mar del Plata ARG