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A89d — Leningrad, Main Line (1952)
1.d4 f5 2.c4 Nf6 3.g3 g6 4.Bg2 Bg7 5.Nf3 O-O 6.O-O d6 7.Nc3 Nc6 8.d5 Na5
Les coups candidats
Ambassadeurs : Matulovic, Milan (6x), Joksic, Sinisa (5x), Mozes, Ervin (5x), Wozniak, Mariola (5x), Fritsche, Frank (4x), Kun, Gabor (4x), Kontic, Vladimir (3x), Haag, Ervin (3x)
Ambassadeurs : Zeitlein, Michael (9x), Kaenel, Hansjuerg (7x), Matulovic, Milan (6x), Ghitescu, Theodor (5x), Reilly, Tim (4x), Kolcak, Marek (4x), Haag, Ervin (4x), Vukic, Milan (3x)
9.Qa4 — 24.4% (550 parties)
Ambassadeurs : Fritsche, Frank (10x), Reilly, Tim (7x), Cuccumini, Vittorio (6x), Bakheet Farag (6x), Rustemov, Alexander (5x), Bartel, Mateusz (5x), Van Mil, Johannes A J (4x), Legemaat, Gert (4x)
9.b3 — 5.2% (118 parties)
Ambassadeurs : Potapov, Alexander (2x), Annakov, Babakuli (2x), Gounant, Stanislas (2x), Donk, Diederik van (2x), Feldis, Yves (2x), Heidtmann, Dirk (2x), Siburian, Cynthia Delfi (2x), Lonnee, Gerard A. (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9.Qd3 9.Nd2 9.Qa4 9.b3
<1800 58 34% 24% 34% 7%
1800-2200 756 43% 28% 22% 8%
2200-2600 1149 34% 33% 27% 4%
2600+ 11 36% 9% 45% 9%
Évolution par décennie (% des parties)
Décennie N parties 9.Qd3 9.Nd2 9.Qa4 9.b3
1950s 13 23% 54% 23%
1960s 57 44% 44% 7% 2%
1970s 97 35% 52% 11% 1%
1980s 135 46% 44% 7% 1%
1990s 559 39% 33% 24% 1%
2000s 611 37% 30% 31% 1%
2010s 703 37% 25% 26% 11%
2020s 76 28% 21% 17% 32%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9.Qd3 37% 28% ▼ -9.5%
9.Nd2 25% 21% ▼ -4.4%
9.Qa4 26% 17% ▼ -9.2%
9.b3 11% 32% ▲ +20.8%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 3 parties
Botvinnik, Mikhail — 3 parties
Karpov, Anatoly — 1 partie
Parties historiques
9.Qd3 — 37.8% (852 parties)
1957 — Bykov, Vladimir vs Alexander Tadala — 1-0 — Leningrad RUS
1959 — Benko, Pal vs Tal, Mikhail — 0-1 — Bled/Zagreb/Belgrade
1959 — Espinosa Flores, Rafael Emilio vs Pelikán, Jiří — 1-0 — Buenos Aires ARG
1960 — Roehrich, E. vs Haag, Ervin — 0-1 — corr FS
1960 — Udovcic, Mijo vs Matulovic, Milan — 1/2-1/2 — Ljubljana
9.Nd2 — 31.3% (705 parties)
1956 — Portisch, Lajos vs Haag, Ervin — 1/2-1/2 — Budapest HUN
1957 — Olafsson, Thorir vs Haag, Ervin — 1-0 — Reykjavik ISL
1958 — Averbakh, Yuri L vs Spassky, Boris Vasily — 1/2-1/2 — Riga LAT
1958 — Salov, Sergej vs Ivanov, Michail Petrovich — 1-0 — ?
1958 — Kluger, Gyula vs Haag, Ervin — 0-1 — HUN-ch Budapest HUN
9.Qa4 — 24.4% (550 parties)
1952 — Keres, Paul vs Korchnoi, Viktor — 1-0 — Moskou ch-URS
1958 — Filep, Tibor vs Flesch, János — 0-1 — HUN-ch Budapest HUN
1959 — Averbakh, Yuri L vs Lutikov, Anatoly S — 1/2-1/2 — Tbilisi ch-URS
1961 — Vladimirov, Boris T vs Gasztonyi, Endre — 1-0 — Budapest HUN
1965 — Liptay, Laszlo Dr. vs Bak, Istvan — 1/2-1/2 — Budapest HUN
9.b3 — 5.2% (118 parties)
1967 — Udovcic, Mijo vs Gufeld, Eduard — 0-1 — Leningrad RUS
1979 — Ripa, G. vs Samaritani, Fabio — 1-0 — Pellestrina
1982 — Aigmueller, Max Ing vs Lanz Calavia, Jose Maria — 0-1 — EU/M/547 corr
1989 — Reich, Thomas vs Kraft, Volker — 1/2-1/2 — Bayern
1991 — Hernandez Fierro, Rodrigo vs Servat, Roberto — 1-0 — Guarapuava BRA