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A53m — Ukranian
1.d4 Nf6 2.c4 d6 3.Nc3 e5 4.e4
Les coups candidats
4…exd4 — 63.0% (121 parties)
Ambassadeurs : Alatortsev, Vladimir N. (6x), Boleslavsky, Isaac (4x), Khavin, Abram Leonidovich (4x), Kan, Ilya A (3x), Kotov, Alexander (2x), Konstantinopolsky, Alexander (2x), Zagorovsky, Vladimir (2x), Kasparian, Genrikh (2x)
Ambassadeurs : Kovalevskaya, Ekaterina (2x), Euwe, Max (1x), Christoffel, Martin (1x), Popov, Vesselin (1x), Mechkarov, Stefan (1x), Cafure, Emilio (1x), Bibiloni, Jorge (1x), Ravizza, L. (1x)
4…Be7 — 8.9% (17 parties)
Ambassadeurs : Kottnauer, Cenek (1x), Bruckner, Guenther (1x), Wittmann, Rainer (1x), Schiffer, Karl-Josef (1x), Kirton, Neil (1x), Green Krotki, J. (1x), Harasta, Vladimir (1x), Valent, Ivan (1x)
4…c6 — 6.2% (12 parties)
Ambassadeurs : Aronin, Lev (1x), Nezhmetdinov, Rashid (1x), Taimanov, Mark (1x), Zichichi, Alvise (1x), Guindy, Esmat Susanne (1x), Fredericia, Louise (1x), Richter, Michael (1x), Argandona Riveiro, Inigo (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 4…exd4 4…Nbd7 4…Be7 4…c6
<1800 3 67% 33%
1800-2200 62 56% 13% 16% 10%
2200-2600 75 69% 15% 7% 3%
Évolution par décennie (% des parties)
Décennie N parties 4…exd4 4…Nbd7 4…Be7 4…c6
1930s 4 75%
1940s 19 74% 11% 5% 5%
1950s 6 100%
1960s 5 40% 20% 20% 20%
1970s 6 67% 17% 17%
1980s 8 62% 38%
1990s 27 56% 15% 4% 4%
2000s 53 53% 19% 11% 11%
2010s 48 67% 10% 15% 6%
2020s 16 75% 19%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…exd4 67% 75% ▲ +8.3%
4…Nbd7 10% 19% ▲ +8.3%
4…Be7 15% 0% ▼ -14.6%
4…c6 6% 0% ▼ -6.2%
Joueurs célèbres
Champions du monde dans cette position
Euwe, Max — 1 partie
Parties historiques
4…exd4 — 63.0% (121 parties)
1934 — Alatortsev, Vladimir N. vs Riumin, Nikolai — 1/2-1/2 — Leningrad ch-URS
1937 — Kan, Ilya A vs Kasparian, Genrikh — 1-0 — Moscow RUS
1937 — Alatortsev, Vladimir N. vs Kasparian, Genrikh — 1-0 — Tbilisi ch-URS
1940 — Kotov, Alexander vs Konstantinopolsky, Alexander — 1-0 — Moskou ch-URS
1940 — Kotov, Alexander vs Konstantinopolsky, Alexander — 1-0 — Ch URS
4…Nbd7 — 15.1% (29 parties)
1946 — Euwe, Max vs Christoffel, Martin — 1-0 — Zaanstreek
1949 — Popov, Vesselin vs Mechkarov, Stefan — 1-0 — Sofia BUL
1967 — Cafure, Emilio vs Bibiloni, Jorge — 0-1 — Mar del Plata ARG
1971 — Ravizza, L. vs Bericat, H. — 1-0 — cr.
1984 — Trevelyan, John vs Jones, Iolo C — 0-1 — Newport WLS
4…Be7 — 8.9% (17 parties)
1948 — Kottnauer, Cenek vs Bruckner, Guenther — 1-0 — Bad Gastein
1968 — Wittmann, Rainer vs Schiffer, Karl-Josef — 0-1 — Hagen
1978 — Kirton, Neil vs Green Krotki, J. — 1-0 — Toronto ch-CAN - zt
1995 — Harasta, Vladimir vs Valent, Ivan — 1/2-1/2 — Slovakia
2000 — Askgaard, Jens vs Christensen, Thomas — 1/2-1/2 — Ringsted
4…c6 — 6.2% (12 parties)
1947 — Aronin, Lev vs Nezhmetdinov, Rashid — 0-1 — Kuibyshev
1969 — Taimanov, Mark vs Zichichi, Alvise — 1/2-1/2 — Venice ITA
1993 — Guindy, Esmat Susanne vs Fredericia, Louise — 1/2-1/2 — Farum
2000 — Ahlander, Bjorn vs Sjoberg, Mats — 1-0 — Stockholm SWE
2000 — Wintergerst, Johannes vs Gaab, Wolfgang — 1-0 — Deidesheim