[Event "Biel Interzonal playoff"] [Site "Biel"] [Date "1976.??.??"] [Round "1"] [White "Petrosian, Tigran V"] [Black "Portisch, Lajos"] [Result "1-0"] [ECO "A46"] [WhiteElo "2635"] [BlackElo "2625"] [PlyCount "97"] [EventDate "1976.10.10"] [EventType "tourn"] [EventRounds "4"] [EventCountry "SUI"] [EventCategory "15"] [SourceTitle "IZT"] [Source "ChessBase"] [SourceDate "1999.07.01"] [SourceVersion "1"] [SourceVersionDate "1999.07.01"] [SourceQuality "1"] 1. d4 Nf6 2. Nf3 e6 3. g3 b5 4. Bg2 Bb7 5. O-O c5 6. Bg5 Be7 7. c3 Na6 8. e3 Rb8 9. Nbd2 O-O 10. a3 Ne4 11. Bxe7 Qxe7 12. Qe2 Nc7 13. Rfd1 Rfd8 14. Ne5 Nxd2 15. Rxd2 Bxg2 16. Kxg2 Nd5 17. e4 Nf6 18. Ng4 Nxg4 19. Qxg4 d5 20. dxc5 dxe4 21. Rad1 Rxd2 22. Rxd2 Qxc5 23. Qxe4 Qc7 24. Qd3 h6 25. Qd7 Qc5 26. Rd3 a5 27. Rf3 Rf8 28. Rf4 e5 29. Re4 Kh8 30. Re3 f6 31. Rd3 Rb8 32. Qd6 Qa7 33. Qc6 Qf7 34. Rd5 Qg6 35. Rxe5 Qd3 36. Rc5 b4 37. cxb4 axb4 38. a4 Qb3 39. Rc2 Qa2 40. Re2 Kh7 41. h4 b3 42. Qd7 Kh8 43. Re7 Rg8 44. Qd4 Ra8 45. Rb7 Re8 46. Rb5 Rc8 47. Rb4 Rg8 48. Qc3 Ra8 49. Qf3 1-0 [Event "Biel Interzonal playoff"] [Site "Biel"] [Date "1976.??.??"] [Round "1"] [White "Tal, Mihail"] [Black "Petrosian, Tigran V"] [Result "1/2-1/2"] [ECO "E11"] [WhiteElo "2615"] [BlackElo "2635"] [PlyCount "35"] [EventDate "1976.10.10"] [EventType "tourn"] [EventRounds "4"] [EventCountry "SUI"] [EventCategory "15"] [SourceTitle "IZT"] [Source "ChessBase"] [SourceDate "1999.07.01"] [SourceVersion "1"] [SourceVersionDate "1999.07.01"] [SourceQuality "1"] 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 Qe7 5. g3 Nc6 6. Nc3 O-O 7. Bg2 d6 8. O-O Bxc3 9. Bxc3 e5 10. Qc2 a5 11. Rad1 Re8 12. dxe5 dxe5 13. Ng5 h6 14. Ne4 Nd7 15. Nd2 Nc5 16. Nb3 Nb4 17. Qb1 Nxb3 18. axb3 1/2-1/2 [Event "Biel Interzonal playoff"] [Site "Biel"] [Date "1976.??.??"] [Round "2"] [White "Petrosian, Tigran V"] [Black "Tal, Mihail"] [Result "1/2-1/2"] [ECO "E18"] [WhiteElo "2635"] [BlackElo "2615"] [PlyCount "35"] [EventDate "1976.10.10"] [EventType "tourn"] [EventRounds "4"] [EventCountry "SUI"] [EventCategory "15"] [SourceTitle "IZT"] [Source "ChessBase"] [SourceDate "1999.07.01"] [SourceVersion "1"] [SourceVersionDate "1999.07.01"] [SourceQuality "1"] 1. d4 Nf6 2. Nf3 e6 3. g3 b6 4. Bg2 Bb7 5. O-O Be7 6. c4 O-O 7. Nc3 Ne4 8. Nxe4 Bxe4 9. Ne1 d5 10. cxd5 Bxg2 11. Nxg2 Qxd5 12. Nf4 Qb7 13. Be3 Nd7 14. Rc1 Rfd8 15. Qc2 c5 16. dxc5 Nxc5 17. Rfd1 Rxd1+ 18. Rxd1 1/2-1/2 [Event "Biel Interzonal playoff"] [Site "Biel"] [Date "1976.??.??"] [Round "2"] [White "Portisch, Lajos"] [Black "Petrosian, Tigran V"] [Result "1/2-1/2"] [ECO "B06"] [WhiteElo "2625"] [BlackElo "2635"] [PlyCount "60"] [EventDate "1976.10.10"] [EventType "tourn"] [EventRounds "4"] [EventCountry "SUI"] [EventCategory "15"] [SourceTitle "IZT"] [Source "ChessBase"] [SourceDate "1999.07.01"] [SourceVersion "1"] [SourceVersionDate "1999.07.01"] [SourceQuality "1"] 1. d4 g6 2. e4 Bg7 3. c3 c6 4. Bd3 d6 5. f4 d5 6. e5 h5 7. Nf3 Nh6 8. Be3 Bf5 9. Bxf5 Nxf5 10. Bf2 Na6 11. Nbd2 Nc7 12. g3 Qd7 13. Qe2 Ne6 14. O-O-O O-O-O 15. Kb1 f6 16. Nb3 Bh6 17. Rhe1 Rde8 18. Qc2 b6 19. h3 Bg7 20. Nc1 Nc7 21. Nd3 Nh6 22. Rh1 Nf7 23. Be3 f5 24. Nh4 Rh6 25. Nf2 Reh8 26. Nf3 e6 27. Rhg1 Bf8 28. g4 hxg4 29. hxg4 Nd8 30. Qc1 c5 1/2-1/2 [Event "Biel Interzonal playoff"] [Site "Biel"] [Date "1976.??.??"] [Round "3"] [White "Petrosian, Tigran V"] [Black "Portisch, Lajos"] [Result "1/2-1/2"] [ECO "E15"] [WhiteElo "2635"] [BlackElo "2625"] [PlyCount "22"] [EventDate "1976.10.10"] [EventType "tourn"] [EventRounds "4"] [EventCountry "SUI"] [EventCategory "15"] [SourceTitle "IZT"] [Source "ChessBase"] [SourceDate "1999.07.01"] [SourceVersion "1"] [SourceVersionDate "1999.07.01"] [SourceQuality "1"] 1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. g3 Ba6 5. b3 Bb4+ 6. Bd2 Be7 7. Bg2 d5 8. cxd5 exd5 9. O-O O-O 10. Nc3 Bb7 11. Rc1 Nbd7 1/2-1/2 [Event "Biel Interzonal playoff"] [Site "Biel"] [Date "1976.??.??"] [Round "3"] [White "Tal, Mihail"] [Black "Petrosian, Tigran V"] [Result "1/2-1/2"] [ECO "C07"] [WhiteElo "2615"] [BlackElo "2625"] [PlyCount "40"] [EventDate "1976.10.10"] [EventType "tourn"] [EventRounds "4"] [EventCountry "SUI"] [EventCategory "15"] [SourceTitle "IZT"] [Source "ChessBase"] [SourceDate "1999.07.01"] [SourceVersion "1"] [SourceVersionDate "1999.07.01"] [SourceQuality "1"] 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd6 7. O-O Nf6 8. Nb3 Nc6 9. Nbxd4 Nxd4 10. Nxd4 Be7 11. b3 O-O 12. Bb2 Qf4 13. Nf3 b6 14. Be5 Qg4 15. Nd4 Qxd1 16. Raxd1 Bb7 17. Nb5 Bc5 18. Bd6 Bxd6 19. Rxd6 Rfc8 20. Rfd1 Kf8 1/2-1/2 [Event "Biel Interzonal playoff"] [Site "Biel"] [Date "1976.??.??"] [Round "4"] [White "Petrosian, Tigran V"] [Black "Tal, Mihail"] [Result "1/2-1/2"] [ECO "A26"] [WhiteElo "2635"] [BlackElo "2615"] [PlyCount "33"] [EventDate "1976.10.10"] [EventType "tourn"] [EventRounds "4"] [EventCountry "SUI"] [EventCategory "15"] [SourceTitle "IZT"] [Source "ChessBase"] [SourceDate "1999.07.01"] [SourceVersion "1"] [SourceVersionDate "1999.07.01"] [SourceQuality "1"] 1. c4 e5 2. Nc3 d6 3. g3 g6 4. Bg2 Bg7 5. d3 Nc6 6. e4 Nge7 7. Nge2 O-O 8. O-O Be6 9. Nd5 Qd7 10. Be3 f5 11. Qd2 Rae8 12. Rae1 Nc8 13. b3 Nd8 14. exf5 Bxf5 15. Ndc3 c6 16. d4 e4 17. Nf4 1/2-1/2 [Event "Biel Interzonal playoff"] [Site "Biel"] [Date "1976.??.??"] [Round "4"] [White "Portisch, Lajos"] [Black "Petrosian, Tigran V"] [Result "1/2-1/2"] [ECO "E18"] [WhiteElo "2625"] [BlackElo "2635"] [PlyCount "26"] [EventDate "1976.10.10"] [EventType "tourn"] [EventRounds "4"] [EventCountry "SUI"] [EventCategory "15"] [SourceTitle "IZT"] [Source "ChessBase"] [SourceDate "1999.07.01"] [SourceVersion "1"] [SourceVersionDate "1999.07.01"] [SourceQuality "1"] 1. Nf3 Nf6 2. c4 e6 3. g3 b6 4. Bg2 Bb7 5. d4 Be7 6. O-O O-O 7. Nc3 Ne4 8. Nxe4 Bxe4 9. Nh4 Bxg2 10. Nxg2 d6 11. e4 Nc6 12. Rb1 Na5 13. b3 c5 1/2-1/2
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