E12u - 4.a3 Bb7 5.Nc3 d5 6.cxd5 Nxd5 7.Qc2 Nxc3 8.bxc3 Be7 9.e4 - Petrosian Kasparov [+0.10]

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E12u — Petrosian Kasparov
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.a3 Bb7 5.Nc3 d5 6.cxd5 Nxd5 7.Qc2 Nxc3 8.bxc3 Be7 8.e4
Eval: [+0.10]
Les coups candidats
9…O-O — 87.5% (2017 parties)
Ambassadeurs : Susla, Vitaliy (54x), Arounopoulos, Stephan (19x), Krasenkow, Michal (18x), Räßler, Arndt (14x), Nenciulescu, Silviu (13x), Dorer, Manfred (13x), Fedorchuk, Sergey A. (13x), Pligin, Sergey Aleksandrovich (11x)
9…c5 — 6.3% (145 parties)
Ambassadeurs : Szabolcsi, Janos (2x), Broman, Hannu (2x), Garcia Jones, Lorenzo Alfredo (1x), Ballmann, Martin (1x), Farago, Sandor (1x), Mischustov, Michael (1x), Van den Brink, Peter (1x), Lemmers, Oscar (1x)
9…Nd7 — 6.1% (140 parties)
Ambassadeurs : Sargissian, Gabriel (3x), Pantzar, Milton (3x), Maduekwe, Chiedu (2x), Kustar, Sandor (2x), Papin, Vasily (2x), Dewald, Hans (2x), Bruederle, Konrad (1x), Holzvoigt Gerhard (1x)
9…Qc8 — 0.1% (2 parties)
Ambassadeurs : Priehoda, Vitezslav (1x), Debnar, Lubos (1x), Franco Ocampos, Zenon (1x), Mabusela, Johannes Manyedi (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9…O-O 9…c5 9…Nd7 9…Qc8
<1800 27 93% 4% 4% —
1800-2200 573 85% 7% 8% —
2200-2600 1364 88% 7% 5% 0%
2600+ 98 94% — 6% —
Évolution par décennie (% des parties)
Décennie N parties 9…O-O 9…c5 9…Nd7 9…Qc8
1980s 122 84% 10% 7% —
1990s 204 74% 13% 13% 0%
2000s 808 89% 6% 6% —
2010s 987 90% 5% 4% 0%
2020s 185 86% 5% 9% —
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9…O-O 90% 86% ▼ -3.5%
9…c5 5% 5% ▼ -0.5%
9…Nd7 4% 9% ▲ +4.3%
9…Qc8 0% 0% -0.1%
Joueurs célèbres
Champions du monde dans cette position
Carlsen, Magnus — 4 parties
Kasparov, Garry — 2 parties
Anand, Viswanathan — 2 parties
Kramnik, Vladimir — 1 partie
Karpov, Anatoly — 1 partie
Ju, Wenjun — 1 partie
Gukesh D — 1 partie
Parties historiques
9…O-O — 87.5% (2017 parties)
1981 — Szeles, Karoly vs Czeripp, Gyorgy — 1/2-1/2 — Budapest HUN
1982 — Portisch, Lajos vs Christiansen, Larry — 1-0 — London ENG
1982 — Portisch, Lajos vs Christiansen, Larry — 1-0 — London ENG
1982 — Novikov, Igor vs Giorgadze, Tamaz — 1-0 — Leningrad RUS
1982 — Stempin, Pawel vs Tischbierek, Raj — 1-0 — Houstka
9…c5 — 6.3% (145 parties)
1982 — Szabolcsi, Janos vs Karolyi, Tibor — 1-0 — HUN-ch+ Budapest HUN
1982 — Salov, Valery vs Novikov, Igor — 1/2-1/2 — Kislovodsk
1982 — ? vs Litynska, Marta — 1/2-1/2 — Kislovodsk
1985 — Tarnai, K. vs Penakov, C. — 1-0 — cr.
1985 — Donnelly, Mike J Dr vs Berry Desmoriaux, Alban — 1-0 — BCF Counties Corr
9…Nd7 — 6.1% (140 parties)
1982 — Gelfand, Boris vs Veremeichik, Vladimir — 0-1 — Minsk BLR
1984 — Twardon, Marian vs Kostyra, Stanislaw — 1/2-1/2 — Brno CZE
1984 — Ivanov, Igor V. vs Lein, Anatoly — 0-1 — New York op New York, NY USA
1988 — Riemer, Wolfgang vs Valeriani, Domenico — 1/2-1/2 — ICCF WT/M/GT/242
1988 — Fauland, Alexander vs Habibi, Ali — 1-0 — Nagykanizsa
9…Qc8 — 0.1% (2 parties)
1991 — Priehoda, Vitezslav vs Debnar, Lubos — 0-1 — SVK-ch Trencin
2018 — Franco Ocampos, Zenon vs Mabusela, Johannes Manyedi — 1-0 — Batumi GEO