E97f - 9.b4 - King's Indian Defense: Orthodox Variation, Bayonet Attack (1958)

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E97f — Orthodox Variation, Bayonet Attack (1958)
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.b4
Les coups candidats
Ambassadeurs : Van Wely, Loek (60x), Pott, Brian (48x), Halliwell, Toni (41x), Epishin, Vladimir (38x), Gonzaga Grego, Luís (37x), Malakhatko, Vadim (34x), Veingold, Aleksandr (30x), Bacrot, Etienne (29x)
Ambassadeurs : Van Wely, Loek (25x), Veingold, Aleksandr (16x), Djukic, Nikola (14x), Ulko, Jaroslav (13x), Sokolov, Ivan (10x), Savchenko, Stanislav (10x), Shen, Yang (10x), Werle, Jan (10x)
Ambassadeurs : Blanco Gramajo, César Augusto (16x), Telepnev, Igor Viktorovich (14x), Blanco Gramajo, Cesar Augusto (10x), Aldrete Lobo, Jorge (10x), Andriuschenko, Nikolay Nikolaevich (9x), Ulasevich, Sergey (8x), Podgursky, Artur (7x), De Heer, Machiel (7x)
9…Nd7 — 4.9% (975 parties)
Ambassadeurs : Nguyen Van Huy (8x), Kaabi, Mejdi (5x), Canamas Soler, Jose Vicente (4x), Martins, Vinicius Tine (4x), Srebrnic, Ana (3x), Laval, Brice (3x), Guo-Yuthok, Sherab (3x), Wang (3x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9…Nh5 9…a5 9…Ne8 9…Nd7
<1800 860 51% 21% 14% 10%
1800-2200 7831 54% 22% 14% 7%
2200-2600 8935 58% 25% 11% 2%
2600+ 365 64% 27% 5% 1%
Évolution par décennie (% des parties)
Décennie N parties 9…Nh5 9…a5 9…Ne8 9…Nd7
1950s 30 17% 50% 23% 7%
1960s 105 51% 29% 10% 7%
1970s 127 62% 13% 16% 7%
1980s 230 72% 12% 7% 6%
1990s 3109 54% 27% 9% 7%
2000s 6966 56% 24% 10% 6%
2010s 7269 58% 19% 16% 4%
2020s 1903 52% 33% 10% 3%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9…Nh5 58% 52% ▼ -6.4%
9…a5 19% 33% ▲ +14.4%
9…Ne8 16% 10% ▼ -5.9%
9…Nd7 4% 3% ▼ -1.4%
Joueurs célèbres
Champions du monde dans cette position
Kramnik, Vladimir — 10 parties
Ju, Wenjun — 10 parties
Ding, Liren — 10 parties
Anand, Viswanathan — 9 parties
Carlsen, Magnus — 7 parties
Kasparov, Garry — 4 parties
Karpov, Anatoly — 4 parties
Karpov, Aleksandr — 1 partie
Gukesh D — 1 partie
Parties historiques
9…Nh5 — 56.2% (11091 parties)
1957 — Larsen, Bent vs Dittmann, Sieghart — 0-1 — Reykjavik ISL
1957 — Trifunovic, Petar vs Larsen, Bent Ravn — 1/2-1/2 — Wageningen zt
1957 — Taimanov, Mark vs Bak, Istvan — 1/2-1/2 — Leningrad RUS
1957 — Geller, Efim P. vs Gligorić, Svetozar — 1-0 — Leningrad RUS
1958 — Peterson, Andrejs vs Gufeld, Eduard — 0-1 — Tashkent UZB
9…a5 — 23.0% (4543 parties)
1955 — Veltmander, Iogannes vs Abarashi, Seyed Mahyar — 0-1 — USSR ch-03 5557
1955 — Kevitz, Alexander vs Pinkus, Albert — 1/2-1/2 — New York, NY USA
1956 — Taimanov, Mark vs Ciocaltea, Victor — 1-0 — Moscow RUS
1956 — Taimanov, Mark vs Ciocaltea, Victor — 1-0 — Moscow RUS
1957 — Rapaka Samuel Paul vs Yanofsky, Daniel Abraham — 1/2-1/2 — Dallas, TX USA
9…Ne8 — 12.3% (2436 parties)
1956 — Chaplinsky, Edgar vs Khalamez — 1-0 — Soviet Union
1957 — Weltmander, I. vs Borisenko, Georgy K — 1-0 — ?
1957 — Koska, Josef vs Stulik, Vlastimil — 1-0 — Prague CZE
1957 — Weiss, Florian vs Arulaid, Alexander — 1-0 — Tallinn EST-HUN
1958 — Pardo Roel, Eduardo vs Caetano, Pedro de Mendonca — 0-1 — Valencia
9…Nd7 — 4.9% (975 parties)
1958 — Pachman, Ludek vs Durão, Joaquim Manuel — 1-0 — Munchen olm
1958 — Pachman, Ludek vs Durão, Joaquim Manuel — 1-0 — Munich GER
1963 — Kretschmar, Heinz vs Larsson, Stig — 0-1 — ?
1964 — Eliozishvili vs Megrelishvili, Akaki — 1-0 — ?
1966 — Reicher, Emanoil-George vs Gunsberger, Alexander — 1/2-1/2 — Bucharest ROU