[Event "Las Palmas"] [Site "Las Palmas"] [Date "1973.??.??"] [Round "1"] [White "Hort, Vlastimil"] [Black "Petrosian, Tigran V"] [Result "1/2-1/2"] [WhiteElo "2600"] [BlackElo "2645"] [ECO "E19"] 1. c4 Nf6 2. Nf3 b6 3. g3 Bb7 4. Bg2 e6 5. d4 Be7 6. O-O O-O 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 Be4 10. b3 f5 11. Bb2 Bf6 12. Ne1 Bxg2 13. Nxg2 c5 1/2-1/2

[Event "Las Palmas"] [Site "Las Palmas"] [Date "1973.??.??"] [Round "2"] [White "Petrosian, Tigran V"] [Black "Ree, Hans"] [Result "1-0"] [WhiteElo "2645"] [BlackElo "2480"] [ECO "E06"] 1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 c5 5. cxd5 Nxd5 6. O-O Nc6 7. d4 Be7 8. dxc5 O-O 9. Qc2 Ndb4 10. Qe4 f5 11. Qc4 Qd5 12. Na3 Qxc5 13. Bg5 h6 14. Bxe7 Qxe7 15. Rfd1 a6 16. Qb3 Bd7 17. Nc4 Be8 18. Nb6 Rd8 19. a3 Nd5 20. Nxd5 exd5 21. e3 Bf7 22. Nd4 Nxd4 23. Rxd4 Kh7 24. Rad1 Rd7 25. Qd3 Qe5 26. b4 Rfd8 27. h4 h5 28. Rc1 Kh6 29. Rc5 g6 30. Qc2 Kh7 31. Bf3 Be6 32. Kh2 Rf7 33. Qc3 Re7 34. a4 Bg8 35. Qd3 Red7 36. b5 axb5 37. Rxb5 Bf7 38. Qb1 Qe7 39. Rdb4 d4 40. exd4 f4 41. Rxh5+ 1-0

[Event "Las Palmas"] [Site "Las Palmas"] [Date "1973.??.??"] [Round "3"] [White "Saidy, Anthony Fred"] [Black "Petrosian, Tigran V"] [Result "1/2-1/2"] [WhiteElo "2425"] [BlackElo "2645"] [ECO "E66"] 1. c4 g6 2. Nc3 Bg7 3. g3 Nf6 4. Bg2 O-O 5. d4 d6 6. Nf3 Nc6 7. O-O a6 8. d5 Na5 9. Nd2 c5 10. Qc2 Rb8 11. b3 b5 12. Bb2 Re8 13. Rae1 Bd7 14. h3 bxc4 15. bxc4 e6 16. Rb1 Qe7 17. e4 Rec8 18. Rfe1 e5 19. Nd1 Bh6 20. Ne3 Nh5 21. Ndf1 Qd8 22. Bc3 Qc7 23. Rxb8 Rxb8 24. Rb1 Rxb1 25. Qxb1 Nb7 26. Kh2 1/2-1/2

[Event "Las Palmas"] [Site "Las Palmas"] [Date "1973.??.??"] [Round "4"] [White "Petrosian, Tigran V"] [Black "Gheorghiu, Florin"] [Result "1/2-1/2"] [WhiteElo "2645"] [BlackElo "2520"] [ECO "D91"] 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Bg5 Ne4 6. cxd5 Nxg5 7. Nxg5 e6 8. Nf3 exd5 9. e3 Qd6 10. Be2 O-O 11. O-O c6 12. a3 a5 13. Na4 Nd7 14. Rc1 b6 15. Qd2 Bb7 16. Rfd1 Rfc8 17. Rc2 Bf6 18. Nc3 Bg7 19. e4 dxe4 20. Nxe4 Qe7 21. Qf4 Nf6 22. Nc3 Nd5 23. Nxd5 cxd5 24. Rxc8+ Rxc8 25. Bd3 Qc7 26. Qd2 Qd6 27. h3 Bc6 1/2-1/2

[Event "Las Palmas"] [Site "Las Palmas"] [Date "1973.??.??"] [Round "5"] [White "Ljubojevic, Ljubomir"] [Black "Petrosian, Tigran V"] [Result "1/2-1/2"] [WhiteElo "2550"] [BlackElo "2645"] [ECO "C11"] 1. e4 e6 2. Nf3 d5 3. Nc3 Nf6 4. e5 Nfd7 5. d4 c5 6. dxc5 Bxc5 7. Bd3 Nc6 8. Bf4 f6 9. exf6 Nxf6 10. O-O O-O 11. Ne5 Bd7 12. Qe2 Qe7 13. Rae1 Rae8 14. a3 a6 15. Kh1 Bd4 16. Nxd7 Qxd7 17. Bd2 e5 18. f3 Kh8 19. Nd1 1/2-1/2

[Event "Las Palmas"] [Site "Las Palmas"] [Date "1973.??.??"] [Round "6"] [White "Ribli, Zoltan"] [Black "Petrosian, Tigran V"] [Result "1/2-1/2"] [WhiteElo "2505"] [BlackElo "2645"] [ECO "E08"] 1. Nf3 Nf6 2. g3 d5 3. Bg2 e6 4. O-O Be7 5. d4 O-O 6. c4 Nbd7 7. Qc2 c6 8. b3 b6 9. Bb2 Bb7 10. Nc3 Rc8 11. Rad1 a5 12. e4 Ba6 13. Qe2 1/2-1/2

[Event "Las Palmas"] [Site "Las Palmas"] [Date "1973.??.??"] [Round "7"] [White "Petrosian, Tigran V"] [Black "Darga, Klaus"] [Result "1/2-1/2"] [WhiteElo "2645"] [BlackElo "2540"] [ECO "A30"] 1. Nf3 Nf6 2. c4 b6 3. d3 c5 4. Nc3 Nc6 5. g3 Bb7 6. Bg2 e6 7. O-O Be7 8. e4 d6 9. Ne1 O-O 10. f4 Ne8 11. g4 Nc7 12. Nf3 d5 13. f5 dxc4 14. dxc4 Bd6 1/2-1/2

[Event "Las Palmas"] [Site "Las Palmas"] [Date "1973.??.??"] [Round "8"] [White "Andersson, Ulf"] [Black "Petrosian, Tigran V"] [Result "1/2-1/2"] [WhiteElo "2535"] [BlackElo "2645"] [ECO "E92"] 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. d4 O-O 6. Be2 e5 7. dxe5 dxe5 8. Qxd8 Rxd8 9. Bg5 Re8 1/2-1/2

[Event "Las Palmas"] [Site "Las Palmas"] [Date "1973.??.??"] [Round "9"] [White "Petrosian, Tigran V"] [Black "Huguet, Bernard"] [Result "1-0"] [WhiteElo "2645"] [BlackElo "2255"] [ECO "D35"] 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Nbd7 5. cxd5 exd5 6. Bf4 c6 7. e3 Bb4 8. Bd3 O-O 9. Qc2 Re8 10. a3 Ba5 11. b4 Bc7 12. Bg5 h6 13. Bh4 Nf8 14. Bxf6 gxf6 15. O-O Bg4 16. Nh4 Qd6 17. g3 Kh8 18. Rfc1 Ne6 19. Bf5 Bxf5 20. Nxf5 Qf8 21. Qd1 Rac8 22. Qh5 Kh7 23. h4 Bb8 24. e4 Nc7 25. exd5 Nxd5 26. Nxd5 cxd5 27. Rxc8 Rxc8 28. Re1 1-0

[Event "Las Palmas"] [Site "Las Palmas"] [Date "1973.??.??"] [Round "10"] [White "Panno, Oscar"] [Black "Petrosian, Tigran V"] [Result "1/2-1/2"] [WhiteElo "2570"] [BlackElo "2645"] [ECO "E65"] 1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. Nc3 c5 7. d4 Nc6 8. e3 Bf5 9. b3 Ne4 10. Bb2 Nxc3 11. Bxc3 Be4 12. Rc1 cxd4 13. Nxd4 Bxg2 14. Kxg2 Qd7 15. Ne2 Ne5 16. e4 Rfd8 17. f4 Ng4 18. Qd3 Nf6 19. Bd4 Qc6 20. Bxf6 Bxf6 21. Rfd1 b6 22. Nd4 Qb7 23. Nf3 1/2-1/2

[Event "Las Palmas"] [Site "Las Palmas"] [Date "1973.??.??"] [Round "11"] [White "Petrosian, Tigran V"] [Black "Hug, Werner"] [Result "1/2-1/2"] [WhiteElo "2645"] [BlackElo "2475"] [ECO "A46"] 1. d4 Nf6 2. Nf3 c5 3. c3 b6 4. Bg5 Bb7 5. Nbd2 Ne4 6. Nxe4 Bxe4 7. e3 cxd4 8. exd4 Qc7 9. Bd3 Qb7 10. Bxe4 Qxe4+ 11. Be3 e6 12. O-O Be7 13. Re1 Qf5 14. d5 O-O 15. Qd2 Bf6 16. Rad1 e5 17. d6 e4 18. Qc2 Re8 19. Bd4 Nc6 20. Bxf6 Qxf6 21. Rxe4 Re6 22. Rxe6 fxe6 23. Qe4 Rf8 24. h3 Qf5 25. Qe2 Qc5 26. Rd2 h6 27. a3 Rf5 28. Qe4 Rf6 29. Rd3 Qb5 30. Rd2 Qc5 31. Qd3 Ne5 32. Nxe5 Qxe5 33. g3 Rf8 34. Kg2 Rf6 35. h4 Rf5 36. c4 Rf8 37. b4 Rc8 38. f4 Qf6 39. Rc2 Qa1 40. Re2 Qc1 41. Rc2 Qb1 42. Qc3 Qd1 43. c5 bxc5 44. bxc5 Qd5+ 45. Kh2 Kh8 46. Qc4 Qf3 47. a4 Qe3 48. Qb5 Qe4 49. Rg2 Kh7 50. Qxd7 Rxc5 51. Qxa7 Rd5 52. Qa6 Qd4 53. Ra2 Rxd6 54. Qe2 Qd5 55. Qc2+ Kg8 56. Rb2 Rd8 57. Qe2 Kh8 58. Rc2 Ra8 59. Rc4 Rb8 60. Qc2 Rd8 61. Rc5 Qf3 62. Rc8 Rxc8 63. Qxc8+ Kh7 64. Qc2+ Kh8 65. Qa2 Qa8 66. a5 Qa6 67. h5 Kh7 68. Kg1 Kh8 69. Kf2 Qa7+ 70. Kf3 Qb7+ 71. Ke3 Qa7+ 72. Ke4 Qb7+ 73. Kd4 Qb4+ 74. Ke5 Qb8+ 75. Ke4 Qb7+ 76. Ke3 Qa7+ 77. Kf3 Qb7+ 78. Kf2 Qa7+ 79. Kf1 Qb7 80. Kg1 Qa7+ 81. Kh2 Qa6 82. Qd2 Qb5 83. g4 Qc4 84. Kg3 Qf1 85. Kh2 Qc4 86. Kg2 Kg8 87. Kf2 Kh8 88. Ke3 Qc6 89. Qd8+ Kh7 90. Qd3+ Kh8 91. a6 Qh1 92. Qe2 Qc1+ 93. Ke4 Qh1+ 94. Kd4 Qd5+ 95. Ke3 e5 96. f5 Qd4+ 97. Kf3 Qg1 98. Qxe5 Qf1+ 99. Ke3 Qe1+ 100. Kd4 Qa1+ 101. Ke4 Qb1+ 102. Kd5 Qb5+ 103. Ke6 Qe8+ 104. Kd6 Qb8+ 1/2-1/2

[Event "Las Palmas"] [Site "Las Palmas"] [Date "1973.??.??"] [Round "12"] [White "Calvo Minguez, Ricardo"] [Black "Petrosian, Tigran V"] [Result "0-1"] [WhiteElo "2330"] [BlackElo "2645"] [ECO "C16"] 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Ne7 5. Qg4 Nf5 6. Bd3 h5 7. Qf4 Nc6 8. a3 Be7 9. Bxf5 g5 10. Qd2 exf5 11. h4 gxh4 12. Nce2 Be6 13. b3 Rg8 14. Nf4 Qd7 15. Ngh3 O-O-O 16. Bb2 Rg7 17. O-O-O Rh8 18. Kb1 Bd8 19. Qe2 Rg4 20. f3 Rg7 21. Nd3 Ne7 22. Nc5 Qc6 23. Nf4 Ng6 24. Nfd3 a5 25. c4 dxc4 26. bxc4 Bxc4 27. Rc1 Nf4 28. Qd2 Nxd3 29. Rxc4 Nxc5 30. Rxc5 Qb6 31. Rxa5 Kb8 32. Rc5 Be7 33. Rc3 Rhg8 34. Rh2 f6 35. Ka2 fxe5 36. Rb3 Qd6 37. d5 Rd8 38. f4 Qxd5 39. Qxd5 Rxd5 40. fxe5 Rd2 41. Rf3 Rg3 42. Rxg3 hxg3 43. Rxh5 Rxg2 44. Kb3 Rh2 45. Rxf5 Rxb2+ 0-1

[Event "Las Palmas"] [Site "Las Palmas"] [Date "1973.??.??"] [Round "13"] [White "Petrosian, Tigran V"] [Black "Diez del Corral, Jesus"] [Result "1-0"] [WhiteElo "2645"] [BlackElo "2470"] [ECO "A16"] 1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 d6 5. Nf3 O-O 6. O-O Nc6 7. d3 Bd7 8. a3 Qc8 9. Re1 Bh3 10. Bh1 h6 11. Nd5 Nxd5 12. cxd5 Nd8 13. Bd2 c6 14. dxc6 Nxc6 15. Bc3 Qd7 16. Bxg7 Kxg7 17. Qd2 Rac8 18. Rac1 Ne5 19. Nxe5 dxe5 20. Qe3 Qb5 21. b4 b6 22. Bb7 Rxc1 23. Rxc1 f6 24. Bc6 Qa6 25. a4 Bf5 26. f4 Qc8 27. fxe5 Qe6 28. exf6+ Qxf6 29. Bf3 Bh3 30. d4 Qd6 31. Rc4 g5 32. d5 g4 33. Bg2 Rf6 34. Qd4 Bxg2 35. Kxg2 a5 36. bxa5 bxa5 37. Qxg4+ Kf7 38. Qh5+ Kg7 39. Qg4+ Kf7 40. Qe4 1-0

[Event "Las Palmas"] [Site "Las Palmas"] [Date "1973.??.??"] [Round "14"] [White "Stein, Leonid"] [Black "Petrosian, Tigran V"] [Result "1/2-1/2"] [WhiteElo "2620"] [BlackElo "2645"] [ECO "B83"] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 d6 5. Nc3 e6 6. Be3 Nf6 7. Be2 Be7 8. O-O Bd7 9. Nb3 a6 10. f4 b5 11. a3 O-O 12. Bf3 Rb8 13. Qd2 Qc7 14. g4 Be8 15. g5 Nd7 16. Qg2 Nb6 17. Rae1 Nc4 18. Bc1 a5 19. Kh1 b4 20. axb4 Rxb4 21. f5 a4 22. Nd2 N4e5 23. Bd1 Nd4 24. f6 Bd8 25. Re3 Bc6 26. Rh3 Ng6 27. Qg4 Re8 28. Qh5 Nf8 29. fxg7 Kxg7 30. Nf3 Nb5 31. Nxb5 Bxb5 32. Re1 Bc6 33. Nd2 Rb5 34. Nb1 Kg8 35. Nc3 Rc5 36. Kg1 Qb7 37. Rf1 Bb6 38. Be3 Rxc3 39. bxc3 Bxe4 40. Qh4 a3 41. Bh5 Bf5 42. Rhf3 Bxe3+ 43. Rxe3 a2 44. Qd4 1/2-1/2

[Event "Las Palmas"] [Site "Las Palmas"] [Date "1973.??.??"] [Round "15"] [White "Petrosian, Tigran V"] [Black "Kavalek, Lubomir"] [Result "1/2-1/2"] [WhiteElo "2645"] [BlackElo "2555"] [ECO "A37"] 1. c4 g6 2. Nc3 Bg7 3. Nf3 c5 4. g3 Nc6 5. Bg2 e6 6. d3 Nge7 7. O-O d5 8. Bg5 1/2-1/2