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- D80-D99 Gruenfeld defence1. d4 Nf6 2. c4 g6 3. Nc3 d5, D87 - 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O 8.Ne2 c5 - Gruenfeld, D87i - 9.O-O Nc6 10.Be3 Na5 - Classical Exchange (1956), SÉRIE D
? 1977 – Round 10 – Polugaevsky, Lev – 1/2-1/2 – Korchnoi, Viktor – G2
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- E12-E19 1. d4 Nf6 2. c4 e6 3. Nf3 b6 Queen's Indian defence, E19 - 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3 Ne4 8.Qc2 Nxc3 9.Qxc3 - Queen's Indian Defense: Classical Variation, Traditional Variation, Main Line, E19h - 9…f5 10.b3 - Old Main Line (1927), SÉRIE E
? 1977 – Round 2 – Polugaevsky, Lev – 0-1 – Korchnoi, Viktor – G1
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- D80-D99 Gruenfeld defence1. d4 Nf6 2. c4 g6 3. Nc3 d5, D87 - 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O 8.Ne2 c5 - Gruenfeld, D87i - 9.O-O Nc6 10.Be3 Na5 - Classical Exchange (1956), SÉRIE D
Candidats sf1 1977 – Round 10 – Polugaevsky, Lev – 1/2-1/2 – Korchnoi, Viktor – G2
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