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E20e —
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Bd2
Les coups candidats
Ambassadeurs : Struzka, Vlastimil (35x), Lucena Cifré, Rafael José (17x), Bass Stanley (16x), Schaufelberger, Heinz (15x), Stern, Rafael (15x), Schmidt, Roland 1959 (13x), Stern, Rene (9x), Strutinskaia, Galina (9x)
4…b6 — 17.0% (1016 parties)
Ambassadeurs : Struzka, Vlastimil (9x), Schmidt, Roland 1959 (7x), Stern, Rafael (6x), Astengo, Marcello (4x), Loik, Galina (4x), Ardila, Oscar Humberto (4x), Thomas, George Alan (3x), Nestorovic, Lazar (3x)
4…c5 — 13.8% (826 parties)
Ambassadeurs : Maki-Uuro, Miikka (5x), Bass Stanley (5x), Schmidek, Emil (5x), Ma, Lin (4x), Kelecevic, Nedeljko (3x), Jakobsen, Ole (3x), Bousios, Hristos (3x), Storslett, Roald (3x)
4…d5 — 13.2% (787 parties)
Ambassadeurs : Farago, Ivan (5x), Nittschalk, Karl (4x), Macskasy, Elod (3x), Dejkalo, Stefan (3x), Kelecevic, Nedeljko (3x), Nemet, Ivan (3x), Sax, Gyula (3x), Schaufelberger, Heinz (3x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…O-O 4…b6 4…c5 4…d5
<1800 526 51% 17% 16% 10%
1800-2200 2128 51% 20% 12% 12%
2200-2600 1109 57% 15% 10% 16%
2600+ 20 65% 10% 5% 20%
Évolution par décennie (% des parties)
Décennie N parties 4…O-O 4…b6 4…c5 4…d5
1880s 1 100%
1910s 1 100%
1920s 14 57% 29% 14%
1930s 48 56% 17% 2% 15%
1940s 25 44% 20% 36%
1950s 39 44% 3% 13% 36%
1960s 50 44% 10% 24% 20%
1970s 81 56% 5% 19% 16%
1980s 197 50% 11% 17% 20%
1990s 946 45% 12% 19% 15%
2000s 1699 47% 19% 14% 13%
2010s 2117 53% 19% 11% 12%
2020s 749 58% 15% 13% 11%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…O-O 53% 58% ▲ +4.9%
4…b6 19% 15% ▼ -3.7%
4…c5 11% 13% ▲ +1.8%
4…d5 12% 11% ▼ -0.8%
Joueurs célèbres
Champions du monde dans cette position
Alekhine, Alexander — 3 parties
Hou, Yifan — 2 parties
Smyslov, Vladimir — 1 partie
Parties historiques
4…O-O — 50.5% (3016 parties)
1883 — Englisch, Berthold vs Blackburne, Joseph — 1/2-1/2 — London ENG
1919 — Spielmann, Rudolf vs Bogoljubow, Efim — 1/2-1/2 — Stockholm November
1922 — Saemisch, Friedrich vs Przepiorka, Dawid — 1-0 — Bad Pistyan CZE
1923 — Brinckmann, Alfred vs Nimzowitsch, Aron — 0-1 — Kolding
1925 — Tarrasch, Siegbert vs Saemisch, Friedrich — 1/2-1/2 — Breslau GER
4…b6 — 17.0% (1016 parties)
1925 — Vidmar, Milan Sr vs Sergeant, Edward — 1-0 — Hastings Town Hall
1928 — Drewitt, John Arthur James vs Thomas, George Alan — 0-1 — Cheltenham
1929 — Seitz, Jakob Adolf vs Znosko-Borovsky, Eugene — 1/2-1/2 — Paris FRA
1929 — Tartakower, Savielly vs Thomas, George Alan — 1-0 — Scarborough ENG
1930 — Alekhine, Alexander vs Pirc, Vasja — 0-1 — Ljubljana/Novi Sad/Zagreb
4…c5 — 13.8% (826 parties)
1920 — Rubinstein, Akiba vs Selezniev, Alexey — 1-0 — Goteborg SWE
1929 — Marshall, Frank vs Steiner, Herman — 1-0 — Bradley Beach
1932 — E Kiiver vs Keres, Paul — 0-1 — Tartu
1953 — Korning, Peter vs Poulsen, Christian — 0-1 — Horsens
1957 — Scheipl, Ralf vs de Jager, Andreas — 1-0 — Bad Neuenahr GER
4…d5 — 13.2% (787 parties)
1930 — Weenink, Henri vs Saemisch, Friedrich — 1-0 — Hamburg GER
1930 — Duchamp, Marcel vs Znosko-Borovsky, Eugene — 1/2-1/2 — Nice FRA
1931 — Duchamp, Marcel vs Znosko-Borovsky, Eugene — 1/2-1/2 — Nice FRA
1932 — Grigoriev, Nikolai vs Kan, Ilya A — 0-1 — Moscow RUS
1932 — Duchamp, Emile vs Nemethne Takacs, Gyongyi — 1-0 — cr.