E44c - 5…Ne4 - St. Petersburg Variation, American Variation (1930)

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E44c — St. Petersburg Variation, American Variation (1930)
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 5.Ne2 Ne4
Les coups candidats
Ambassadeurs : De Firmian, Nick (8x), Ward, Chris G (8x), Pacey, Kevin (8x), Korchnoi, Viktor (7x), Cafferty, Bernard (7x), Sloth, Jorn (6x), Donner, Jan-Hein (6x), Kuzmin, Gennadi (6x)
6.Bd2 — 33.8% (524 parties)
Ambassadeurs : De Firmian, Nick (11x), Korchnoi, Viktor (8x), Muetsch, Annmarie (7x), Adams, Michael (5x), Hillarp Persson, Tiger (5x), Moiseenko, Aleksei (5x), Ward, Chris G (4x), Zsinka, Laszlo (4x)
6.f3 — 12.2% (189 parties)
Ambassadeurs : Ward, Chris G (6x), Levitt, Jonathan P (4x), Sowray, Peter J (4x), Clares Huanca, Danner Saed (3x), Alinasab, Mobina (3x), Flear, Glenn C (2x), Bisguier, Arthur B (2x), Kozlov, Vladimir N (2x)
6.a3 — 1.9% (29 parties)
Ambassadeurs : Veremeichik, Vladimir (1x), Savon, Vladimir (1x), Zorman, Vojko (1x), Pasqualin, Giorgio (1x), Ingbrandt, Johan (1x), Bator, Robert (1x), Gilbert, Jonathan A. (1x), Cobb, James (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 6.Qc2 6.Bd2 6.f3 6.a3
<1800 36 47% 33% 11% 6%
1800-2200 437 56% 27% 11% 4%
2200-2600 934 48% 37% 13% 1%
2600+ 49 37% 59% 4% —
Évolution par décennie (% des parties)
Décennie N parties 6.Qc2 6.Bd2 6.f3 6.a3
1950s 5 40% — 60% —
1960s 11 64% 9% 27% —
1970s 64 64% 17% 16% 2%
1980s 130 58% 26% 14% 2%
1990s 190 46% 34% 15% 3%
2000s 391 52% 35% 10% 1%
2010s 467 49% 32% 14% 2%
2020s 293 47% 43% 7% 2%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
6.Qc2 49% 47% ▼ -2.2%
6.Bd2 32% 43% ▲ +10.7%
6.f3 14% 7% ▼ -6.5%
6.a3 2% 2% -0.1%
Joueurs célèbres
Champions du monde dans cette position
Botvinnik, Mikhail — 2 parties
Parties historiques
6.Qc2 — 50.5% (783 parties)
1956 — Kozma, Julius vs Necesany, Zdenek — 1-0 — CSR-ch sf Bratislava SVK
1957 — Ivkov, Borislav vs Alster, Ladislav — 1-0 — Wenen etc
1960 — Korchnoi vs Botvinnik, Alexander — 1-0 — ?
1961 — Korchnoi, Viktor vs Botvinnik, Mikhail — 1-0 — Leningrad RUS
1962 — Kozma, Julius vs Drimer, Dolfi — 1/2-1/2 — Bucharest ROU
6.Bd2 — 33.8% (524 parties)
1961 — Szabo, Laszlo vs Botvinnik, Mikhail — 0-1 — Oberhausen etc
1971 — Brinck-Claussen, Bjorn vs Sloth, Jorn — 1/2-1/2 — Hjoerring
1973 — Szabo, Laszlo vs Kuzmin, Gennadi — 1/2-1/2 — Hastings ENG
1974 — Weise, Dieter vs Weigel, Herbert — 0-1 — Ebersberg
1975 — Zilberman, Nathan R vs Bangiev, Alexander — 1-0 — Chelyabinsk RUS
6.f3 — 12.2% (189 parties)
1951 — Evans, Larry vs Santasiere, Anthony — 1-0 — New York ch-USA
1951 — Evans Lianda vs Santasiere — 1-0 — ?
1954 — Hooper, David vs Fazekas, Stephan — 1-0 — Nottingham ch-BCF
1963 — Berger, Achim vs Bahtiar, Nurumjan — 0-1 — Djakarta
1968 — Hort, Vlastimil vs Alster, Ladislav — 1/2-1/2 — CSR-chT Harrachov
6.a3 — 1.9% (29 parties)
1976 — Veremeichik, Vladimir vs Savon, Vladimir — 0-1 — Minsk BLR
1986 — Ingbrandt, Johan vs Bator, Robert — 1-0 — Stockholm SWE
1988 — Zorman, Vojko vs Pasqualin, Giorgio — 1-0 — Caorle ITA
1990 — Portwood, Martin C vs Cafferty, Bernard — 0-1 — Folkestone ENG
1992 — Speelman, Jon S vs De Firmian, Nick — 1-0 — Brussels BEL