B74c - 9…a5 - Dragon, Classical, Alekhine Variation (1937)

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B74c — Dragon, Classical, Alekhine Variation (1937)
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Be2 Nc6 8.O-O O-O 9.Nb3 a5
Les coups candidats
10.a4 — 83.2% (333 parties)
Ambassadeurs : Eliskases, Erich (3x), Mednis, Edmar J (3x), Rantanen, Yrjo A. (3x), Beni, Alfred (2x), Brinck-Claussen, Bjorn (2x), Averbakh, Yuri L (2x), Kretschmer, Helmut (2x), Gereben, Erno (2x)
10.a3 — 8.0% (32 parties)
Ambassadeurs : Gushuliak, Justin (2x), Romanovsky, Rem Konstantinovich (1x), Gufeld, Eduard (1x), Puc, Stojan (1x), Damjanovic, Mato (1x), Seiffert, Ronny Steffen (1x), Rathai, Volker (1x), Vasiukov, Evgeni (1x)
10.f4 — 4.5% (18 parties)
Ambassadeurs : Asker, Sven (1x), Jackson, John Alexander (1x), Tiszay (1x), Ozsvath, David (1x), Anderson, Charles (1x), Pilnick, Carl (1x), Wood, Alex (1x), Berry, Jonathan (1x)
10.h3 — 1.2% (5 parties)
Ambassadeurs : Myagmarsuren, Lkhamsuren (1x), Soos, Bela (1x), Ralle, Pierre (1x), Fournier, Philippe (1x), Dionizio, Andre Filipe Nascimento (1x), Silva, Goncalo Nuno Neto Pires (1x), Ramis Roser, Miguel (1x), Fiol Company, Juan (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 10.a4 10.a3 10.f4 10.h3
<1800 13 85% — 15% —
1800-2200 157 82% 6% 5% 3%
2200-2600 137 88% 9% 1% 1%
2600+ 1 100% — — —
Évolution par décennie (% des parties)
Décennie N parties 10.a4 10.a3 10.f4 10.h3
1950s 21 67% 14% 14% —
1960s 29 90% 7% — 3%
1970s 27 74% 19% 4% —
1980s 33 100% — — —
1990s 72 83% 7% 7% 1%
2000s 113 87% 4% 4% —
2010s 97 79% 10% 4% 3%
2020s 8 62% 25% — —
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
10.a4 79% 62% ▼ -16.9%
10.a3 10% 25% ▲ +14.7%
10.f4 4% 0% ▼ -4.1%
10.h3 3% 0% ▼ -3.1%
Joueurs célèbres
Champions du monde dans cette position
Hou, Yifan — 1 partie
Parties historiques
10.a4 — 83.2% (333 parties)
1951 — Beni, Alfred vs Vidmar, Milan Jr — 1-0 — Schlechter mem
1951 — Toran Albero, Roman vs Eliskases, Erich — 1/2-1/2 — San Rafael
1951 — Janosevic, Dragoljub vs Fuderer, Andrija — 0-1 — Sarajevo BIH
1951 — Seiffert, Ronny Steffen vs Ruppe, Otto — 1/2-1/2 — Schwerin GER
1951 — Kalkstein, Rodolfo vs Eliskases, Erich — 0-1 — San Rafael
10.a3 — 8.0% (32 parties)
1951 — Seiffert, Ronny Steffen vs Rathai, Volker — 1-0 — Schwerin GER
1955 — Vasiukov, Evgeni vs Beilin, Mikhail — 1/2-1/2 — Moscow RUS
1956 — Romanovsky, Rem Konstantinovich vs Gufeld, Eduard — 1-0 — Kiev UKR
1969 — Puc, Stojan vs Damjanovic, Mato — 1-0 — Ljubljana VIDMAR
1969 — Puc, Fabrice vs Damjanovic, Adam — 1-0 — Ljubljana
10.f4 — 4.5% (18 parties)
1951 — Asker, Sven vs Jackson, John Alexander — 1/2-1/2 — Birmingham/Coventry
1952 — Tiszay vs Ozsvath, David — 0-1 — Szeged HUN
1955 — Anderson, Charles vs Pilnick, Carl — 0-1 — Long Beach, CA USA
1973 — Wood, Alex vs Berry, Jonathan — 0-1 — Vancouver BC CAN
1993 — Herscovici, David vs Shakhnazarov, Oleg — 1/2-1/2 — Concord
10.h3 — 1.2% (5 parties)
1962 — Myagmarsuren, Lkhamsuren vs Soos, Bela — 0-1 — Varna olm
1993 — Ralle, Pierre vs Fournier, Philippe — 1-0 — Paris op Paris FRA
2012 — Ramis Roser, Miguel vs Fiol Company, Juan — 0-1 — Palma de Majorca ESP
2014 — Dionizio, Andre Filipe Nascimento vs Silva, Goncalo Nuno Neto Pires — 0-1 — Luso
2018 — Kapusta, Petr vs Weissmann, Lukas — 1/2-1/2 — Czech Republic CZE