E18j - 8…Na6 - Queen’s Indian (1977)

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E18j — Queen’s Indian (1977)
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3 d5 8.Ne5 Na6
Les coups candidats
9.cxd5 — 39.7% (232 parties)
Ambassadeurs : Nun, Jiri (6x), Kojder, Konrad (4x), Yudasin, Leonid (4x), Langeweg, Kick (3x), Markmann, Ulrich (3x), Schneider, Lars-Ake (3x), Ftacnik, Lubomir (3x), Kirov, Nino (2x)
9.Qa4 — 13.7% (80 parties)
Ambassadeurs : Rocha, Antonio (2x), Nun, Jiri (2x), Markmann, Ulrich (2x), Rubinetti, Jorge (1x), Almada, Enrique (1x), Rosiak, Andrzej (1x), Kojder, Konrad (1x), Vallifuoco, Giacomo (1x)
9.Bg5 — 12.8% (75 parties)
Ambassadeurs : Huebner, Robert (3x), Stoppel, Franz (2x), Wirthensohn, Heinz (2x), Yudasin, Leonid (2x), Timman, Jan H (2x), Tal, Mikhail (2x), Werner, Dimo (1x), Bernhardt, Rolf (1x)
9.b3 — 11.8% (69 parties)
Ambassadeurs : Neckar, Lubomir (4x), Scheeren, Peter (3x), Oll, Lembit (3x), Novikov, Igor (2x), Sosonko, Gennadi (2x), Timman, Jan H (2x), Huebner, Robert (2x), Smyslov, Vasily (2x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9.cxd5 9.Qa4 9.Bg5 9.b3
<1800 13 15% 15% 31% 8%
1800-2200 155 26% 21% 15% 12%
2200-2600 367 46% 11% 11% 13%
2600+ 6 50% — 17% 17%
Évolution par décennie (% des parties)
Décennie N parties 9.cxd5 9.Qa4 9.Bg5 9.b3
1960s 1 100% — — —
1970s 62 26% 10% 23% 15%
1980s 110 45% 11% 5% 16%
1990s 133 56% 11% 10% 9%
2000s 110 35% 15% 17% 14%
2010s 148 31% 18% 15% 9%
2020s 20 35% 30% 10% 10%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9.cxd5 31% 35% ▲ +3.9%
9.Qa4 18% 30% ▲ +12.4%
9.Bg5 15% 10% ▼ -4.9%
9.b3 9% 10% ▲ +1.2%
Joueurs célèbres
Champions du monde dans cette position
Tal, Mikhail — 4 parties
Karpov, Anatoly — 3 parties
Parties historiques
9.cxd5 — 39.7% (232 parties)
1967 — Edelsvard, Olle vs Johansson, Martin 1979 — 1/2-1/2 — corr SWE/K
1972 — Lein, Anatoly vs Lutikov, Anatoly S — 1/2-1/2 — Chelyabinsk RUS
1976 — Hubner, R. vs Byrne, Ray — 1/2-1/2 — Las Palmas ESP
1976 — Agzamov, Georgy vs Pinchuk, Sergey T — 1-0 — Tashkent UZB
1976 — Smejkal, Jan vs Byrne, Robert E — 1/2-1/2 — Biel SUI
9.Qa4 — 13.7% (80 parties)
1977 — Kavalek, Lubomir vs Sosonko, Gennadi — 1/2-1/2 — Amsterdam NED
1977 — Kochyev, Alexander vs Karpov, Anatoly — 1/2-1/2 — Leningrad RUS
1977 — Enricci, Juan Andres vs Argomaniz Ricardo — 1/2-1/2 — ?
1978 — Wiedemann, Harald, Prof. vs Bernhardt Benjamin Franklin Mullin — 1-0 — ?
1978 — Masculo, Jose vs Rocha, Antonio — 1/2-1/2 — Natal
9.Bg5 — 12.8% (75 parties)
1977 — Petrosian, Tigran V. vs Tal, Mikhail — 1/2-1/2 — Sochi RUS
1977 — Beliavsky, Alexander G vs Kopec, Danny — 1-0 — Mexico City MEX
1977 — Garcia Padron, Jose vs Karpov, Anatoly — 0-1 — Las Palmas ESP
1977 — Petrosian, Tigran A. vs Tal, Mikhail — 1/2-1/2 — Sochi Sochi RUS
1977 — Marszalek, Rafal vs Lebredo Zaragoitia, Gerardo — 1/2-1/2 — Lublin POL
9.b3 — 11.8% (69 parties)
1975 — Lehmann, Christina vs Alisalama Nirina Jean Michel — 1/2-1/2 — Halle GER
1977 — Furman, Slavomir vs Hubner, R. — 1/2-1/2 — Bad Lauterberg GER
1977 — Eperjesi, Laszlo Dr. vs Orso, Miklos — 0-1 — Budapest ch-HUN
1977 — Sapi, Laszlo vs Bakheet Farag — 0-1 — Budapest ch-HUN
1978 — Scheeren, Peter vs Taylor, Timothy — 1/2-1/2 — Eerbeek NED