A90b —
1.d4 f5 2.c4 Nf6 3.g3 e6 4.Nc3
Les coups candidats
Ambassadeurs : Ginzburg, Maximiliano (3x), Radjabov, Teimour (3x), Bohm, Hans (2x), Dejkalo, Stefan (2x), Hoen, Ragnar Harald (2x), Thurlow, Kevin J (2x), Schmittdiel, Eckhard (2x), Gravel, Simon (2x)
4…Be7 — 31.4% (942 parties)
Ambassadeurs : Zalys, Ignas (3x), Milans, Carlos (3x), Coskun, Kursat (2x), Ladanyike-Karakas, Eva (2x), Alves, Francisco H B Severino (2x), Handel, Horst (2x), Lastovicka, Jiri (2x), Buj, Pablo (2x)
4…Bb4 — 22.6% (678 parties)
Ambassadeurs : Just, Gabriele, Dr. (5x), McKone, Peter (3x), Mahia, Gustavo (3x), Heidenfeld, Wolfgang (2x), Gurgenidze, Bukhuti (2x), Spassky, Boris V. (2x), Mai, Iris (2x), Manteca (2x)
4…c6 — 10.3% (310 parties)
Ambassadeurs : Reimann, Guenther (3x), Sussmann, Stefan (2x), Klicker, Fritz (2x), Czech, Ludwig (2x), Hoang Canh Huan (2x), Truong Tuan Kiet (2x), Adeline, Bruno (2x), Lobach, Pavel V. (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…d5 4…Be7 4…Bb4 4…c6
<1800 280 31% 29% 23% 14%
1800-2200 1589 35% 30% 20% 12%
2200-2600 506 35% 26% 32% 5%
2600+ 4 75%
Évolution par décennie (% des parties)
Décennie N parties 4…d5 4…Be7 4…Bb4 4…c6
1950s 38 11% 63% 24% 3%
1960s 65 8% 63% 26% 3%
1970s 57 16% 53% 25% 2%
1980s 119 28% 44% 25% 2%
1990s 606 34% 34% 19% 11%
2000s 875 36% 28% 20% 11%
2010s 983 34% 27% 23% 13%
2020s 258 26% 32% 33% 7%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…d5 34% 26% ▼ -7.9%
4…Be7 27% 32% ▲ +4.8%
4…Bb4 23% 33% ▲ +9.5%
4…c6 13% 7% ▼ -5.7%
Joueurs célèbres
Champions du monde dans cette position
Ju, Wenjun — 1 partie
Hou, Yifan — 1 partie
Parties historiques
4…d5 — 32.5% (974 parties)
1954 — Frazier, F vs Eucher, M — 0-1 — Los Angeles, CA USA
1957 — Milev, Zdravko vs Gerenski, Hristo — 1/2-1/2 — Sofia BUL
1958 — Soultanbeieff, Victor vs Denckens, Leon — 1/2-1/2 — Mechelen
1959 — Savon, Vladimir vs Makarov, Andrei — 1/2-1/2 — ?
1960 — Mardle, Denis vs Lloyd, David E — 1-0 — Hastings ENG
4…Be7 — 31.4% (942 parties)
1950 — Rivier, Andre Raymond vs Mardle, Denis — 0-1 — West London CC
1950 — Whyte, Alfred Dempster vs Mardle, Denis — 0-1 — Hastings ENG
1950 — Pomar Salamanca, Arturo vs Torre, Eugenio — 1-0 — Estoril
1951 — Enevoldsen, Harald vs Pedersen, Eigil — 0-1 — Aarhus DEN
1951 — Pomar Salamanca, Arturo vs Sanz Aguado, Jose — 0-1 — Madrid ESP
4…Bb4 — 22.6% (678 parties)
1951 — Hunte, Hugo vs Kuebart, Erich — 1-0 — Schwerin GER
1951 — Basjuni, Sad Zaglul vs Heidenfeld, Wolfgang — 1/2-1/2 — Marianske Lazne zt
1951 — Keckhut, John vs Lauderbach — 1-0 — Los Angeles, CA USA
1953 — Marmoud, Edmond vs Bhend, Edwin — 1-0 — Lucerne SUI
1954 — Olivera, Juan Francisco vs Trompowsky, Octavio — 0-1 — Montevideo URU
4…c6 — 10.3% (310 parties)
1954 — Dommes, Thibault vs Shamaev, Leonid — 1-0 — Leningrad RUS
1966 — Heemskerk, Fenny vs Stibaner, Ottilie — 1-0 — Oberhausen
1968 — Primavera, Giuseppe vs Terrazas, Filiberto — 1-0 — Lugano SUI
1970 — Reuben, Stewart vs Sutton, Alan — 1/2-1/2 — ?
1982 — Laurin, Jacques vs Chimeta Lauryn — 0-1 — Gatineau