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- 4.g3 d5, 5.cxd5, A10-A39 English Opening, A35 - 1. c4 c5 2. Nc3 Nc6 - English Opening: Symmetrical Variation, Two Knights Variation, A35 - 1. c4 Nf6 2. Nf3 c5 3. Nc3 Nc6 - English Opening: Symmetrical Variation, Four Knights Variation, SÉRIE A
World Cup 1991 – Round 5 – Andersson, Ulf 1949 – 0-1 – Chandler, Murray G – G39

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- E20-E59 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 Nimzo-Indian defence, E54 - 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O dxc4 8. Bxc4 - Nimzo-Indian Defense: Normal Variation, Gligoric System, Exchange Variation, SÉRIE E
World Cup 1991 – Round 5 – Ivanchuk, Vasyl – 1/2-1/2 – Speelman, Jon S – G37

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- (not 12.Nbd2), 10...c5 11.d4 Bb7, C90-C99 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. c3 d6 Ruy Lopez, closed, C96 - 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Na5 10. Bc2 - Ruy Lopez: Closed, Chigorin Defense, SÉRIE C
World Cup 1991 – Round 5 – Khalifman, Alexander – 1-0 – Beliavsky, Alexander G – G38

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- 6...Be7 7.e3 Nbd7 — Exchange, 8.Bd3 O-O 9.Nf3 Re8 10.O-O Nf8 11.h3 — Main Line, D30-D39 1. d4 d5 2. c4 e6 Queen's gambit declined, D36 - 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 c6 6. Qc2 - Queen's Gambit Declined: Exchange Variation, Reshevsky Variation, SÉRIE D
World Cup 1991 – Round 5 – Nikolic, Predrag – 1/2-1/2 – Timman, Jan H – G33

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