E30b - 4…c5 - Leningrad (1928)

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E30b — Leningrad (1928)
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Bg5 c5
Les coups candidats
Ambassadeurs : Rain, Ricardo Ernesto (81x), Zylla, Johannes (33x), Gaertner, Guntram (15x), Sasikiran, Krishnan (11x), Kubala, Martin (10x), Grego, Luís José Gonzaga (10x), Matveeva, Svetlana (8x), Comas Fabrego, Lluis (8x)
5.e3 — 7.2% (219 parties)
Ambassadeurs : Cafferty, Bernard (2x), Zwaig, Arne (2x), Weissbeck, Wolf-Dieter (2x), Liu, Kexin (2x), Garcia, Javier (2x), Secondi, Alberto (2x), Bunch, FR. (1x), Jenkinson, P. (1x)
5.Nf3 — 6.4% (197 parties)
Ambassadeurs : Zsinka, Laszlo (3x), Lucena Cifré, Rafael José (2x), Rains, S. (1x), Adrian Jimenez (1x), Abad Calderon, Abraham (1x), Golombek, Harry (1x), Powell, Bryson (1x), Sarosy, Zoltan L (1x)
5.a3 — 5.2% (159 parties)
Ambassadeurs : Lainson, Bernard (1x), Morris, Mike (1x), Bendjema, H. (1x), Handel, Horst (1x), Kalkstein, Rodolfo (1x), Isaacson, David (1x), Fuglerud, Sverre (1x), Avram, Sretko (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 5.d5 5.e3 5.Nf3 5.a3
<1800 215 39% 19% 9% 14%
1800-2200 1106 62% 9% 8% 7%
2200-2600 1132 94% 1% 2% 1%
2600+ 48 100% — — —
Évolution par décennie (% des parties)
Décennie N parties 5.d5 5.e3 5.Nf3 5.a3
1950s 39 90% 5% 3% —
1960s 52 85% 2% 4% 6%
1970s 100 83% 5% 3% 3%
1980s 165 82% 4% 5% 2%
1990s 721 75% 7% 5% 5%
2000s 837 68% 8% 7% 6%
2010s 923 68% 7% 7% 6%
2020s 223 67% 11% 10% 4%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
5.d5 68% 67% ▼ -1.0%
5.e3 7% 11% ▲ +3.9%
5.Nf3 7% 10% ▲ +2.5%
5.a3 6% 4% ▼ -2.4%
Joueurs célèbres
Champions du monde dans cette position
Karpov, Anatoly — 1 partie
Hou, Yifan — 1 partie
Kramnik, Vladimir — 1 partie
Parties historiques
5.d5 — 71.6% (2191 parties)
1952 — Steiner, Herman vs Unzicker, Ferdinand, Dr. — 0-1 — Stockholm izt
1952 — Steiner, Herman vs Pomar Salamanca, Arturo — 1/2-1/2 — Tampa, FL
1952 — Steiner, Herman vs Evans, Larry — 0-1 — USA
1953 — Rubinstein, Andres vs Atim Alicia Okello — 0-1 — Belgium
1953 — Wade, Robert G vs List, Paul — 1-0 — Bognor Regis
5.e3 — 7.2% (219 parties)
1952 — Bunch, FR. vs Cafferty, Bernard — 0-1 — ?
1953 — Jenkinson, P. vs Cafferty, Bernard — 0-1 — ?
1962 — Moscoso Wilson vs Garces, Napoleon — 0-1 — Pichincha
1972 — Taeymans, Jef vs Winkelmann, Max — 0-1 — Pula CRO
1975 — Hoffmann, Regine vs Lesky, Christine — 1/2-1/2 — Stralsund
5.Nf3 — 6.4% (197 parties)
1951 — Abad Calderon, Abraham vs Golombek, Harry — 1/2-1/2 — Hastings ENG
1962 — Rains, S. vs Adrian Jimenez — 1-0 — So California
1966 — Powell, Bryson vs Sarosy, Zoltan L — 0-1 — Toronto CAN
1976 — Skulsky, Ian R vs Sontag, Paul — 0-1 — Burnaby/Richmond/P.C.
1977 — Medvedev, Viktor vs Furman, Semyon — 1/2-1/2 — Moskva tt
5.a3 — 5.2% (159 parties)
1961 — Bendjema, H. vs Handel, Horst — 0-1 — Helsinki FIN
1964 — Lainson, Bernard vs Morris, Mike — 1-0 — Oakland
1964 — Kalkstein, Rodolfo vs Isaacson, David — 0-1 — Tel Aviv ISR
1970 — Colon Romero, Arturo vs Avgousti, Petrakis — 1-0 — Siegen olm
1971 — Cruz, Jorge vs Lev, Arieh — 1/2-1/2 — Athens GRE