D86f - 8…b6 - Grünfeld Defense: Exchange Variation, Simagin's Lesser Variation (1954)

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D86f — Exchange Variation, Simagin's Lesser Variation (1954)
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O 8.Ne2 b6
Les coups candidats
Ambassadeurs : Douven, Rudy (4x), Hadi, Adrian (3x), Sajtar, Jaroslav (3x), Lehmann, Heinz (3x), Kindermann, Stefan (3x), Ohse, Andreas, Dr. (3x), Pachman, Ludek (2x), Simagin, Vladimir (2x)
Ambassadeurs : Adorjan, Andras (6x), Timman, Jan H (5x), Lukacs, Peter (3x), Peelen, Piet (3x), Pastukhov, Igor (3x), Messere, Kenneth Charles (2x), Bajec, Ivo (2x), Sajtar, Jaroslav (2x)
9.Be3 — 10.2% (36 parties)
Ambassadeurs : Korchnoi, Viktor (2x), Sax, Gyula (2x), Bonham, R. (1x), OKelly, Michael (1x), Berliner, Hans (1x), Seidman, Herbert (1x), Sliwa, Bogdan (1x), Koskinen, Heikki (1x)
9.Qd3 — 2.5% (9 parties)
Ambassadeurs : Adorjan, Andras (2x), Ingerslev, Aage (1x), Ravn, Palle (1x), Mulcahy, Edmond (1x), Unzicker, Ferdinand, Dr. (1x), Vaisman, Volodia (1x), Gunsberger, Alexander (1x), Petrosian, Tigran V. (1x)
Analyse statistique des coups candidats
Répartition par niveau Elo (% des parties)
Tranche Elo N parties 9.O-O 9.h4 9.Be3 9.Qd3
<1800 10 80% 10% 10% —
1800-2200 79 51% 27% 19% —
2200-2600 167 43% 43% 4% 4%
2600+ 6 — 67% 33% —
Évolution par décennie (% des parties)
Décennie N parties 9.O-O 9.h4 9.Be3 9.Qd3
1950s 38 66% 18% 8% 8%
1960s 18 50% 44% — 6%
1970s 74 35% 49% 11% 1%
1980s 36 39% 44% 6% —
1990s 72 39% 33% 14% 4%
2000s 64 53% 30% 12% 2%
2010s 44 52% 39% 9% —
2020s 8 62% 25% 12% —
Tendances récentes (2010s → 2020s)
Coup 2010s 2020s Δ
9.O-O 52% 62% ▲ +10.2%
9.h4 39% 25% ▼ -13.6%
9.Be3 9% 12% ▲ +3.4%
9.Qd3 0% 0% +0.0%
Joueurs célèbres
Champions du monde dans cette position
Botvinnik, Mikhail — 2 parties
Kasparov, Garry — 1 partie
Parties historiques
9.O-O — 46.3% (164 parties)
1950 — Moiseev, Oleg vs Simagin, Vladimir — 0-1 — URS-ch sf Tula
1950 — Moiseev, Aleksandr vs Simagin, Vladimir — 0-1 — Tula RUS
1951 — Perez Perez, Francisco Jose vs Pilnik, Herman — 0-1 — Madrid ESP
1952 — Szentkiralyi Toth, Vince vs Trifunovic, Petar — 0-1 — Rio de Janeiro BRA
1952 — Trifunovic, Petar vs Evans, Larry — 1/2-1/2 — Helsinki olm
9.h4 — 36.4% (129 parties)
1951 — Alexander Tadala vs Simagin, Vladimir — 1-0 — Leningrad RUS
1953 — Pachman, Ludek vs Sajtar, Jaroslav — 1/2-1/2 — Prague CZE
1953 — Alster, Ladislav vs Filip, Miroslav — 0-1 — Prague CZE
1954 — Podgorny, Jiri vs Sajtar, Jaroslav — 1-0 — Prague CZE
1955 — Fuderer, Andrija vs Filip, Miroslav — 1-0 — Goteborg izt
9.Be3 — 10.2% (36 parties)
1954 — Berliner, Hans vs Seidman, Herbert — 0-1 — New York ch-USA
1954 — Sliwa, Bogdan vs Koskinen, Heikki — 1-0 — Praag zt
1956 — Bonham, R. vs OKelly, Michael — 0-1 — corr Dyckhoff mem
1970 — Johannesson, Bjorn vs Sigurjonsson, Bjorn — 0-1 — Reykjavik ISL
1972 — Mikenda, Gerhard vs Krnic, Zdenko — 0-1 — Graz AUT
9.Qd3 — 2.5% (9 parties)
1954 — Mulcahy, Edmond vs Unzicker, Ferdinand, Dr. — 0-1 — Munich GER
1954 — Petrosian, Tigran V. vs Anay Barche — 1/2-1/2 — Belgrade SRB
1956 — Ingerslev, Aage vs Ravn, Palle — 1-0 — Copenhagen DEN
1961 — Vaisman, Volodia vs Gunsberger, Alexander — 1-0 — Romania
1977 — Pribyl, Josef vs Adorjan, Andras — 1/2-1/2 — Moskou etc