E97e - 9.Bd2 - King's Indian Defense: Orthodox Variation, Korchnoi Attack (1966)

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E97e — Orthodox Variation, Korchnoi Attack (1966)
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% (251 parties)
Ambassadeurs : Cafferty, Bernard (9x), Taimanov, Mark (5x), Torre, Eugenio (4x), Geller, Efim P. (4x), Lanz Calavia, José María (3x), Nielsen, Hartvig (2x), Ribli, Zoltan (2x), De Coverly, Roger D (2x)
9…Nh5 — 32.9% (225 parties)
Ambassadeurs : Cafferty, Bernard (4x), Berry, Jonathan (4x), Constantinou, Agathoclis (4x), Ree, Hans (3x), Vogt, Lothar (3x), Gufeld, Eduard (3x), Nunn, John D M (3x), Rodriguez Cespedes, Amador (2x)
9…Nd7 — 20.3% (139 parties)
Ambassadeurs : Sysel, Jaroslav (3x), Ada, Liam Zion (3x), Geller, Efim P. (2x), Luczak, Andrzej (2x), Hammond, Andrew J C (2x), Madsen, Erik (2x), Plachetka, Jan (2x), Uhlmann, Wolfgang (2x)
9…c5 — 3.7% (25 parties)
Ambassadeurs : Cafferty, Bernard (2x), McFarland, Robert S (2x), Neat, Ken P (1x), Goodman, David S C (1x), Kortchnoi, V. (1x), Byrne, Ray (1x), Korchnoi, Viktor (1x), Byrne, Robert E (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 19 42% 32% — 5%
1800-2200 205 42% 28% 20% 2%
2200-2600 331 33% 36% 21% 5%
2600+ 17 35% 41% 6% 12%
Évolution par décennie (% des parties)
Décennie N parties 9…Ne8 9…Nh5 9…Nd7 9…c5
1950s 6 50% 17% 33% —
1960s 11 27% 9% 36% —
1970s 112 54% 26% 13% 6%
1980s 73 34% 30% 27% 7%
1990s 122 24% 43% 25% 3%
2000s 124 30% 36% 18% 2%
2010s 213 38% 32% 18% 3%
2020s 23 52% 22% 26% —
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9…Ne8 38% 52% ▲ +13.7%
9…Nh5 32% 22% ▼ -10.7%
9…Nd7 18% 26% ▲ +7.8%
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% (251 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 — 32.9% (225 parties)
1953 — Benkner, Otto vs Unzicker, Ferdinand, Dr. — 0-1 — Leipzig GER
1960 — Borisenko, Georgy K vs Terentiev, Vitaly — 1-0 — Perm RUS
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
9…Nd7 — 20.3% (139 parties)
1958 — Fernandez, Bernardo vs Ramirez, Hernan — 1/2-1/2 — Pereira
1959 — Geller, Efim P. vs Kollberg, Lothar — 1-0 — Berlin East
1966 — Garcia R., Luis Ernesto vs Mecking, Henrique — 0-1 — Rio Hondo zt
1966 — Heemsoth, Hermann vs Schmaus, Alexandru — 1/2-1/2 — corr FRG/K
1967 — Romani, Elio vs Ginoulhiac, Eugenio — 1-0 — Recoaro Terme
9…c5 — 3.7% (25 parties)
1972 — Weise, Daniel, Dr. vs Oechslein, Rainer — 1-0 — Oberursel
1973 — Kortchnoi, V. vs Byrne, Ray — 1-0 — Leningrad izt
1973 — Korchnoi, Viktor vs Byrne, Robert E — 1-0 — ?
1975 — Muench, Klaus-Norbert, Dr. vs Seibold, Hubert, Dr. — 0-1 — Coburg
1975 — Cafferty, Bernard vs Squires, MJ. — 1-0 — ?