E97t - 9.Nd2 - King's Indian Defense: Orthodox Variation, Modern System (1967)

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E97t — Orthodox Variation, Modern System (1967)
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.Nd2
Les coups candidats
Ambassadeurs : Gleizerov, Evgeny (40x), Ftacnik, Lubomir (39x), Chuchelov, Vladimir (32x), Tratar, Marko (31x), Ulybin, Mikhail (31x), Lputian, Smbat (28x), Nemet, Ivan (27x), Sinkovics, Peter (22x)
Ambassadeurs : Akopian, Vladimir (9x), Grigore, George-Gabriel (5x), Nemet, Ivan (4x), Ostenstad, Berge (4x), Taimanov, Mark (3x), Skalkotas, Nikolaos (3x), Backlund, Anders (3x), Plachetka, Jan (3x)
Ambassadeurs : Fedorov, Alexei (15x), Sinkovics, Peter (13x), Bakheet Farag (11x), Nemet, Ivan (9x), Plachetka, Jan (8x), Sznapik, Aleksander (8x), Barbu, George-Viorel (8x), Vogt, Lothar (8x)
Ambassadeurs : Hebden, Mark L (15x), Gleizerov, Evgeny (12x), Nemet, Ivan (8x), Tratar, Marko (8x), Civin, Tomas (5x), Berresheim, Helmut (4x), Mueller, Leonhard (4x), Arlandi, Ennio (4x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9…a5 9…Nd7 9…c5 9…Ne8
<1800 165 41% 23% 13% 19%
1800-2200 1584 43% 23% 10% 21%
2200-2600 3250 55% 13% 16% 12%
2600+ 150 79% 3% 9% 5%
Évolution par décennie (% des parties)
Décennie N parties 9…a5 9…Nd7 9…c5 9…Ne8
1960s 21 — 43% 19% 19%
1970s 251 11% 24% 50% 11%
1980s 633 36% 14% 40% 7%
1990s 2836 58% 14% 12% 12%
2000s 1456 53% 17% 9% 18%
2010s 899 45% 22% 4% 24%
2020s 76 41% 32% 7% 20%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9…a5 45% 41% ▼ -4.7%
9…Nd7 22% 32% ▲ +9.7%
9…c5 4% 7% ▲ +2.1%
9…Ne8 24% 20% ▼ -4.1%
Joueurs célèbres
Champions du monde dans cette position
Kasparov, Garry — 10 parties
Kramnik, Vladimir — 7 parties
Karpov, Anatoly — 6 parties
Ju, Wenjun — 6 parties
Tal, Mikhail — 1 partie
Ding, Liren — 1 partie
Parties historiques
9…a5 — 50.4% (3113 parties)
1970 — Schaufelberger, Heinz vs Toran Albero, Roman — 0-1 — Malaga ESP
1971 — Schauwecker, Meinrad vs Biriescu, Ioan — 1/2-1/2 — Groningen NED
1971 — Kortchnoi, V. vs EDEN GLORY — 1-0 — Moskou cm qf
1972 — Ogaard, Leif vs Saverymuttu, Seth — 1/2-1/2 — Arosa
1972 — Langeweg, Kick vs Savon, Vladimir — 1/2-1/2 — Wijk aan Zee NED
9…Nd7 — 16.4% (1011 parties)
1960 — Udovcic, Mijo vs Bulat, Ante — 1-0 — Ljubljana
1962 — Levit, Roman vs Zhukhovitsky, Samuel — 1-0 — Moscow RUS
1962 — Nikolaevsky, Yuri V vs Tukmakov, Vladimir B — 1-0 — Kiev UKR
1962 — Nikolaevsky, Yuri V vs Savon, Vladimir — 1-0 — Kiev UKR
1965 — Bakheet Farag vs Kluger, Gyula — 1/2-1/2 — Budapest HUN
9…c5 — 14.9% (919 parties)
1962 — Pelitov, Dimitar vs Stefanov, Josif Jovchev — 1-0 — Sofia BUL
1969 — Gligorić, Svetozar vs Geller, Efim P. — 1/2-1/2 — Belgrade SRB
1969 — Gligoric, Sofija vs Tringov, Georgi P — 1-0 — Belgrade SRB
1969 — Polugaevsky, Lev vs Tringov, Georgi P — 1/2-1/2 — Belgrade SRB
1970 — Miguel, Nahuel vs Gligoric, Sofija — 1/2-1/2 — Siegen olm
9…Ne8 — 14.7% (906 parties)
1961 — Shamkovich, Leonid vs Nezhmetdinov, Rashid — 0-1 — Baku ch-URS
1969 — Rodriguez, Ruben vs Zuckerman, Bernard — 1/2-1/2 — Dresden GER
1969 — Taimanov, Mark vs Portisch, Ferenc — 1-0 — Zalaegerszeg
1969 — Garcia, Eder Raimundo vs Quinteros, Miguel A. — 1-0 — Buenos Aires ARG
1970 — Polugaevsky, Lev vs Ujtumen, Tudev — 1/2-1/2 — Palma de Mallorca izt