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- 9...f5 10.b3 (not 10...Bf6), 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, SÉRIE E
? 1977 – Round 2 – Polugaevsky, Lev – 0-1 – Korchnoi, Viktor – G1

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- 9...f5 10.b3 (not 10...Bf6), 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, SÉRIE E
Hoogovens 1978 – Round 11 – Miles, Anthony J – 0-1 – Korchnoi, Viktor – G26

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