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A53m — Ukranian (1931)
1.d4 Nf6 2.c4 d6 3.Nc3 e5 4.e4
Les coups candidats
4…exd4 — 62.1% (110 parties)
Ambassadeurs : Polugaevsky, Lev (2x), Nezhmetdinov, Rashid (2x), Garbett, Paul Anthony (2x), Belkhodja, Slim (2x), Kieninger, George (1x), Heinicke, Herbert (1x), Penrose, Jonathan (1x), Clarke, Peter (1x)
Ambassadeurs : Kovalevskaya, Ekaterina (2x), Cafiero, Michael (1x), Babiloni Martinez, Jose F. (1x), Trevelyan, John (1x), Jones, Iolo C (1x), Pein, Malcolm (1x), Schwartz, Ylon (1x), Boensch, Uwe (1x)
4…Be7 — 9.0% (16 parties)
Ambassadeurs : Wittmann, Rainer (1x), Schiffer, Karl-Josef (1x), Kirton, Neil (1x), Green Krotki, Jan (1x), Harasta, Vladimir (1x), Valent, Ivan (1x), Askgaard, Jens (1x), Christensen, Thomas (1x)
4…c6 — 6.8% (12 parties)
Ambassadeurs : Taimanov, Mark (1x), Zichichi, Alvise (1x), Guindy, Esmat Susanne (1x), Fredericia, Louise (1x), Cipra, Lothar (1x), Schoeller, Wolfgang (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 7 71% 14% 14%
1800-2200 74 57% 12% 15% 11%
2200-2600 73 68% 16% 7% 3%
Évolution par décennie (% des parties)
Décennie N parties 4…exd4 4…Nbd7 4…Be7 4…c6
1950s 8 100%
1960s 5 40% 20% 20% 20%
1970s 6 67% 17% 17%
1980s 7 57% 43%
1990s 28 57% 14% 4% 4%
2000s 53 53% 19% 11% 11%
2010s 49 67% 10% 14% 6%
2020s 21 71% 19% 5%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
4…exd4 67% 71% ▲ +4.1%
4…Nbd7 10% 19% ▲ +8.8%
4…Be7 14% 0% ▼ -14.3%
4…c6 6% 5% ▼ -1.4%
Parties historiques
4…exd4 — 62.1% (110 parties)
1950 — Alatortsev, Vladimir N. vs Boleslavsky, Isaac — 0-1 — Moskou ch-URS
1954 — Zagorovsky, Vladimir vs Vasiukov, Evgeni — 0-1 — Moscow RUS
1955 — Kieninger, George vs Heinicke, Herbert — 1-0 — Hamburg GER
1955 — Van Den Broeck, Hans vs Boey, Josef — 1/2-1/2 — Merksem
1955 — Andersen, Borge vs Kupferstich, Moises — 1-0 — Aalborg DEN
4…Nbd7 — 15.8% (28 parties)
1967 — Cafiero, Michael vs Babiloni Martinez, Jose F. — 0-1 — Mar del Plata ARG
1971 — Ravizza, L. vs Bericat, Angel Hugo — 1-0 — cr.
1984 — Trevelyan, John vs Jones, Iolo C — 0-1 — Newport WLS
1987 — Pein, Malcolm vs Schwartz, Ylon — 1-0 — Netanya op Netanya ISR
1987 — Boensch, Uwe vs Paehtz, Thomas — 1/2-1/2 — Glauchau
4…Be7 — 9.0% (16 parties)
1968 — Wittmann, Rainer vs Schiffer, Karl-Josef — 0-1 — Hagen
1978 — Kirton, Neil vs Green Krotki, Jan — 1-0 — Toronto ch-CAN - zt
1996 — Harasta, Vladimir vs Valent, Ivan — 1/2-1/2 — Slovakia
2000 — Askgaard, Jens vs Christensen, Thomas — 1/2-1/2 — Ringsted
2001 — Doossche, Carlo vs Mertens, Pauline — 0-1 — Brasschaat
4…c6 — 6.8% (12 parties)
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 — Pfalz op
2004 — Cipra, Lothar vs Schoeller, Wolfgang — 1/2-1/2 — GER