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- B20 - B99 - 1. e4 c5 - Sicilian Defense, B80-B85 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 Sicilian, Scheveningen variation, B85 - 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be2 a6 7. O-O Nf6 8. Be3 Be7 9. f4 d6 10. Qe1 O-O - Sicilian Defense: Scheveningen Variation, Classical Main Line, B85 - 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4.... - Sicilian Defense, SÉRIE B 1.e4 2....
La Valetta MLT 1980 – Round 1 – Fernandez, Antonio – 1/2-1/2 – Polugaevsky, Lev – G5

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- 6.O-O O-O, 7.d5 exd5 8.Nh4 c6, E12-E19 1. d4 Nf6 2. c4 e6 3. Nf3 b6 Queen's Indian defence, E17 - 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 - Queen's Indian Defense: Traditional Variation, SÉRIE E
La Valetta MLT 1980 – Round 1 – Polugaevsky, Lev – 1/2-1/2 – Stean, Michael F – G6

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- 6.O-O O-O — Main Line, 7.Qc2 a6 8.Qxc4 b5 9.Qc2 Bb7 10.Bf4 (not 10...Nc6), E01-E09 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Catalan, closed, E05 - 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Nf3 Be7 - Catalan Opening: Open Defense, Classical Line, SÉRIE E
La Valetta MLT 1980 – Round 1 – Ribli, Zoltan – 1/2-1/2 – Liberzon, Vladimir – G1

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- A10-A39 English Opening, A13 - 1. c4 e6 - English Opening: Agincourt Defense, A13c - 1…e6 2.g3 d5, A13l - 1…e6 2.Nf3 d5, A13o - Agincourt Variation, A13r - Neo-Catalan, A13s - Neo-Catalan, A13u - Neo-Catalan Accepted, SÉRIE A
La Valetta MLT 1980 – Round 1 – Ribli, Zoltan – 1/2-1/2 – Polugaevsky, Lev – G7

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- 7.e3 Bxc3+ — Main Line, 8.bxc3 e5 9.f3 Nbd7 — Main Line, E20-E59 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 Nimzo-Indian defence, E31 - 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bg5 h6 5. Bh4 c5 6. d5 d6 - Nimzo-Indian Defense: Leningrad Variation, Benoni Defense, SÉRIE E
La Valetta MLT 1980 – Round 1 – Timman, Jan H – 1/2-1/2 – Andersson, Ulf 1949 – G3

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- 11.b3 Bf6 12.Bb2 Qe7 — Main Line, 9...c5 10.Rd1 d6 — Main Line, 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
La Valetta MLT 1980 – Round 10 – Timman, Jan H – 1/2-1/2 – Portisch, Lajos – G14

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- 8.Qb3, D50-D69 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Queen's Gambit Declined, 4.Bg5, D58 - 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 h6 6. Bh4 O-O 7. e3 b6 - Queen's Gambit Declined: Tartakower Defense, SÉRIE D
La Valetta MLT 1980 – Round 11 – Gheorghiu, Florin – 0-1 – Liberzon, Vladimir – G15

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