A89f - 8.d5 Na5 9.Qd3 - Leningrad Main Line [+0.80]

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A89f — Leningrad Main Line
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 9.Qd3
Eval: [+0.80]
Les coups candidats
9…c5 — 61.5% (516 parties)
Ambassadeurs : Reilly, Tim (5x), Mozes, Ervin (5x), Matulovic, Milan (4x), Joksic, Sinisa (4x), Johansson, Thomas 1957 (4x), Petro, Jozsef (4x), Golcman, Evgeny (4x), Formanek, Edward (3x)
9…e5 — 37.8% (317 parties)
Ambassadeurs : Bartel, Mateusz (6x), Knezevic, Milorad (5x), Fritsche, Frank (4x), Wozniak, Mariola (4x), Kun, Gabor (4x), Lastin, Alexander (3x), Hoang, Thanh Trang (3x), Stremavicius, Titas (3x)
9…b6 — 0.4% (3 parties)
Ambassadeurs : Carril Garcia, Luis (1x), Palacios Gonzalez, Juan Manuel (1x), Dunn, Andrew c (1x), Allis, Richard (1x), Albrecht, Manja (1x), Przybyl, Zbigniew (1x)
9…f4 — 0.1% (1 parties)
Ambassadeurs : Frisk, Ensio (1x), Sairanen, Pekka (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9…c5 9…e5 9…b6 9…f4
<1800 10 40% 60% — —
1800-2200 267 54% 45% 0% —
2200-2600 407 64% 36% — —
2600+ 4 25% 75% — —
Évolution par décennie (% des parties)
Décennie N parties 9…c5 9…e5 9…b6 9…f4
1950s 3 100% — — —
1960s 25 84% 16% — —
1970s 34 82% 18% — —
1980s 60 78% 20% — 2%
1990s 216 75% 25% — —
2000s 228 59% 40% 0% —
2010s 257 44% 55% 1% —
2020s 16 50% 50% — —
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9…c5 44% 50% ▲ +6.0%
9…e5 55% 50% ▼ -4.9%
9…b6 1% 0% ▼ -0.8%
9…f4 0% 0% +0.0%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 1 partie
Botvinnik, Mikhail — 1 partie
Parties historiques
9…c5 — 61.5% (516 parties)
1957 — Bykov, Vladimir vs Tolush, Alexander V — 1-0 — Leningrad RUS
1959 — Espinosa Flores, Rafael Emilio vs Pelikán, Jiří — 1-0 — Buenos Aires ARG
1959 — Benko, Pal vs Tal, Mikhail — 0-1 — Bled/Zagreb/Belgrade
1960 — Roehrich, E vs Haag, Ervin — 0-1 — corr FS
1960 — Udovcic, Mijo vs Matulovic, Milan — 1/2-1/2 — Ljubljana
9…e5 — 37.8% (317 parties)
1961 — Pachman, Ludek vs Kozomara, Vlado — 1/2-1/2 — Sarajevo BIH
1963 — Alcaraz Suarez, Juan Camilo vs Andrade Herrera, Fernando Alfonso — 0-1 — Buenos Aires ch-ARG
1963 — Novak, Zbynek vs Acosta Fabian, Janna Paloma — 1/2-1/2 — Prague CZE
1967 — Schumacher, Helmut vs Franco Raymundo, Eduardo — 1/2-1/2 — Barcelona ESP
1971 — Mititelu, Gheorghe vs Stanciu, Traian — 1/2-1/2 — Bucharest ROU
9…b6 — 0.4% (3 parties)
2008 — Carril Garcia, Luis vs Palacios Gonzalez, Juan Manuel — 1-0 — Ourense ESP
2015 — Dunn, Andrew c vs Allis, Richard — 1-0 — Shrigley Hall ENG
2018 — Albrecht, Manja vs Przybyl, Zbigniew — 1-0 — ICCF
9…f4 — 0.1% (1 parties)
1981 — Frisk, Ensio vs Sairanen, Pekka — 1-0 — corr NS/II