B71f — Dragon, Levenfish (1946)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.f4 Nc6 7.Bb5
Les coups candidats
7…Bd7 — 94.4% (218 parties)
Ambassadeurs : Walther, Edgar (4x), Klavins, Janis (2x), Czerniak, Moshe (2x), Selick, Paul (2x), Tarleva, Vira (2x), Kruk, Sergey Valentinovich (2x), García Sánchez, José Manuel (2x), Bosch van Rosenthal, Edzard (1x)
7…Qc7 — 5.6% (13 parties)
Ambassadeurs : Pasteiner, Johann (1x), Schumacher, Rudolf (1x), Schmid, Lothar (1x), Parma, Bruno (1x), Weissleder, Wolfgang M Dr (1x), Vagenknecht, Ludek (1x), Friedman, William A (1x), Ketterer, Ronald B (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 7…Bd7 7…Qc7
<1800 25 96% 4%
1800-2200 82 95% 5%
2200-2600 26 100%
Évolution par décennie (% des parties)
Décennie N parties 7…Bd7 7…Qc7
1950s 13 100%
1960s 26 88% 12%
1970s 17 100%
1980s 15 87% 13%
1990s 48 92% 8%
2000s 62 94% 6%
2010s 41 100%
2020s 9 100%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
7…Bd7 100% 100% +0.0%
7…Qc7 0% 0% +0.0%
Parties historiques
7…Bd7 — 94.4% (218 parties)
1951 — Nezhmetdinov, Rashid vs Ilivitsky, Georgy A — 1/2-1/2 — RUS-ch Yaroslavl
1951 — Schmid, Lothar vs Gilg, Karl — 1-0 — FRG-ch Duesseldorf GER
1952 — Czerniak, Moshe vs Bosch van Rosenthal, Edzard — 0-1 — Helsinki FIN
1952 — Rivise, Irving vs Spiller, Arthur R — 0-1 — Hollywood, CA
1952 — Chaplinsky, Edgar vs Alexander Tadala — 1/2-1/2 — Riga LAT
7…Qc7 — 5.6% (13 parties)
1961 — Pasteiner, Johann vs Schumacher, Rudolf — 1-0 — Meschede
1963 — Schmid, Lothar vs Parma, Bruno — 1/2-1/2 — Malaga ESP
1969 — Weissleder, Wolfgang M Dr vs Vagenknecht, Ludek — 1-0 — ?
1981 — Boll, Peter vs Vlam, Horatio — 1-0 — Rotterdam NED
1982 — Friedman, William A vs Ketterer, Ronald B — 0-1 — ?