D86g - 8…Nc6 - Grünfeld Defense: Exchange Variation, Simagin's Improved Variation (1951)

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D86g — Exchange Variation, Simagin's Improved Variation (1951)
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O 8.Ne2 Nc6
Les coups candidats
Ambassadeurs : Yandemirov, Valeri (21x), Uhlmann, Wolfgang (13x), Ftacnik, Lubomir (10x), Aegerter, Martin (9x), Tukmakov, Vladimir B (7x), Hartston, William R (6x), Stohl, Igor (6x), Gburek, Juergen (6x)
Ambassadeurs : Licina Vrabic, Anita (4x), Valchanov, Mihail (2x), Kozma, Julius (2x), Foisor, Ovidiu-Doru (2x), Uhlmann, Wolfgang (2x), Gligoric, Sofija (2x), Degtiarev, Evgeny (2x), Spassky, Boris Vasily (1x)
9.Bg5 — 10.0% (122 parties)
Ambassadeurs : Moehring, Guenther (3x), Clares Huanca, Danner Saed (3x), Filip, Miroslav (2x), Baumbach, Friedrich, Dr. (2x), Porreca, Giorgio (2x), Uhlmann, Wolfgang (2x), Klompus, Grigory Yakovlevich (2x), Niklasson, Christer (2x)
9.h4 — 3.3% (40 parties)
Ambassadeurs : Spassky, Boris Vasily (2x), Suetin, Alexey S (2x), Spassky, Boris V. (2x), Hadi, Adrian (2x), Sajtar, Jaroslav (1x), Reichenbach, Werner (1x), Lohsse, Hans Peter (1x), Osnos, Viatcheslav (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9.O-O 9.Be3 9.Bg5 9.h4
<1800 42 60% 21% 5% —
1800-2200 305 72% 16% 3% 2%
2200-2600 529 66% 14% 10% 4%
2600+ 15 100% — — —
Évolution par décennie (% des parties)
Décennie N parties 9.O-O 9.Be3 9.Bg5 9.h4
1950s 50 50% 10% 22% 10%
1960s 94 59% 17% 10% 5%
1970s 146 59% 19% 16% 2%
1980s 155 57% 10% 19% 2%
1990s 297 62% 14% 11% 3%
2000s 247 78% 13% 4% 3%
2010s 188 76% 13% 3% 2%
2020s 47 77% 15% — 6%
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9.O-O 76% 77% ▲ +1.1%
9.Be3 13% 15% ▲ +2.1%
9.Bg5 3% 0% ▼ -2.7%
9.h4 2% 6% ▲ +4.3%
Joueurs célèbres
Champions du monde dans cette position
Smyslov, Vladimir — 1 partie
Tal, Mikhail — 1 partie
Kramnik, Vladimir — 1 partie
Parties historiques
9.O-O — 66.1% (809 parties)
1951 — Kindij Igor vs Milic, Borislav — 0-1 — Sarajevo BIH
1952 — Boleslawski, Zbigniew vs Partyka, Kazimierz — 1/2-1/2 — Katowice POL
1952 — Pedersen, Eigil vs Platz, Hans — 1-0 — Helsinki olm
1952 — Bobotsov, Milko G vs Filchev, Rusko — 1/2-1/2 — Sofia BUL
1952 — Sanchez Alpizar, Luis Alberto vs Pachman, Ludek — 1/2-1/2 — Saltsjobaden SWE
9.Be3 — 14.0% (171 parties)
1952 — Kramer, Haije vs Bosch van Rosenthal, Edzard — 1/2-1/2 — Beverwijk NED
1952 — Valchanov, Mihail vs Milev, Zdravko — 1/2-1/2 — Sofia BUL
1952 — Kottnauer, Cenek vs Sajtar, Jaroslav — 0-1 — Tatranska ch CZE
1955 — Wexler, Bernardo vs Miguel, Nahuel — 1-0 — Buenos Aires ARG
1957 — Valchanov, Mihail vs Bobekov, Radko — 1/2-1/2 — Sofia BUL
9.Bg5 — 10.0% (122 parties)
1951 — Kopylov, Nazar vs Simagin, Vladimir — 1-0 — Moskou ch-URS
1953 — Soultanbeieff, Victor vs Dunkelblum, Arthur — 1/2-1/2 — Antwerp BEL
1953 — Borloy, Karoly vs Navarovszky, Laszlo — 1-0 — HUN-ch Budapest HUN
1954 — Hayes, Christiaan vs Heemsoth, Hermann — 1-0 — Dyckhoff Memorial A 5456
1954 — Filip, Miroslav vs Korchnoi, Viktor — 0-1 — Bucharest ROU
9.h4 — 3.3% (40 parties)
1953 — Spassky, Boris Vasily vs Sajtar, Jaroslav — 1/2-1/2 — Bucharest ROU
1956 — Hamman, Robert vs Lorber, Robert — 1-0 — Canoga Park, CA
1958 — Spassky, Boris Vasily vs Suetin, Alexey S — 1-0 — USSR Ch Riga LAT
1958 — Spassky, Boris V. vs Suetin, Alexey S — 1-0 — Riga ch-URS
1959 — Reichenbach, Werner vs Lohsse, Hans Peter — 1-0 — Berlin West