E97e - 8.d5 Ne7 9.Bd2 - Orthodox Variation, Korchnoi Attack (1966)

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E97e — Mar del Plata
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7 9.Bd2
Les coups candidats
9…Ne8 — 36.7% (248 parties)
Ambassadeurs : Cafferty, Bernard (9x), Taimanov, Mark (6x), Geller, Efim P. (5x), Torre, Eugenio (4x), Lanz Calavia, José María (4x), Fischer, Robert J (3x), Lechtynsky, Jiri (3x), Robatsch, Karl (2x)
9…Nh5 — 32.8% (222 parties)
Ambassadeurs : Vogt, Lothar (6x), Constantinou, Agathoclis (4x), Cafferty, Bernard (3x), Ree, Hans (3x), Gufeld, Eduard (3x), Nunn, John D M (3x), Pekarek, Ales (3x), Piket, Jeroen (3x)
9…Nd7 — 20.4% (138 parties)
Ambassadeurs : Sysel, Jaroslav (3x), Geller, Efim P. (2x), Paavilainen, Jorma (2x), Luczak, Andrzej (2x), Boersma, Paul (2x), Plachetka, Jan (2x), Petschar, Hans (2x), Paterek, Michal (2x)
9…c5 — 3.6% (24 parties)
Ambassadeurs : Cafferty, Bernard (2x), McFarland, Robert S (2x), Squires, MJ. (1x), Neat, Ken P (1x), Goodman, David S C (1x), Weise, Dieter (1x), Oechslein, Rainer (1x), Korchnoi, Viktor (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9…Ne8 9…Nh5 9…Nd7 9…c5
<1800 8 38% 12% — 12%
1800-2200 186 41% 28% 21% 2%
2200-2600 326 33% 38% 20% 4%
2600+ 18 44% 39% 6% 6%
Évolution par décennie (% des parties)
Décennie N parties 9…Ne8 9…Nh5 9…Nd7 9…c5
1950s 6 50% 17% 33% —
1960s 10 30% — 40% —
1970s 111 54% 25% 14% 6%
1980s 71 34% 31% 28% 6%
1990s 122 24% 43% 25% 3%
2000s 122 30% 36% 17% 2%
2010s 212 38% 33% 18% 3%
2020s 22 50% 23% 27% —
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9…Ne8 38% 50% ▲ +11.8%
9…Nh5 33% 23% ▼ -9.8%
9…Nd7 18% 27% ▲ +8.9%
9…c5 3% 0% ▼ -2.8%
Joueurs célèbres
Champions du monde dans cette position
Fischer, Robert James — 1 partie
Kramnik, Vladimir — 1 partie
Parties historiques
9…Ne8 — 36.7% (248 parties)
1956 — Napolitano, Mario vs Olsson, Ake — 1-0 — Gardone Riviera
1959 — Geller, Efim P. vs Nitsche, Werner — 0-1 — Halle/Saale
1959 — Geller, Efim P. vs Patzak, Rudolf — 1-0 — Halle/Saale
1967 — Cafferty, Bernard vs Paige, Roger L — 1-0 — Hastings ENG
1968 — Geller, Efim P. vs ? — 1-0 — Skopje MKD
9…Nh5 — 32.8% (222 parties)
1953 — Benkner, Otto vs Unzicker, Wolfgang — 0-1 — Leipzig GER
1970 — Taimanov, Mark vs Vogt, Lothar — 1/2-1/2 — Leipzig GER
1971 — Rakay, Kvetoslav vs Vogt, Lothar — 0-1 — Novy Smokovec SVK
1971 — Svoboda, Vaclav vs Mista, Ladislav — 0-1 — Havirov CZE
1971 — Harper, Bruce vs Zuk, Robert D. — 0-1 — Burnaby CAN
9…Nd7 — 20.4% (138 parties)
1958 — Fernandez, Bernardo vs Ramirez, Hernan — 1/2-1/2 — Pereira
1959 — Geller, Efim P. vs Kollberg, Lothar — 1-0 — Berlin East
1966 — Heemsoth, Hermann vs Schmaus, Alexandru — 1/2-1/2 — corr FRG/K
1966 — Acosta Garcia, Rafael Isaac vs Mecking, Henrique — 0-1 — Rio Hondo zt
1967 — Romani, Elio vs Ginoulhiac, Eugenio — 1-0 — Recoaro Terme
9…c5 — 3.6% (24 parties)
1972 — Weise, Dieter vs Oechslein, Rainer — 1-0 — Oberursel
1973 — Korchnoi, Viktor vs Byrne, Ray — 1-0 — Leningrad RUS
1975 — Cafferty, Bernard vs Squires, MJ. — 1-0 — ?
1975 — Muench, Klaus-Norbert, Dr. vs Seibold, Hubert, Dr. — 0-1 — Coburg
1976 — Cafferty, Bernard vs McFarland, Robert S — 1/2-1/2 — ?