[Event "Buenos Aires"]
[Site "Buenos Aires"]
[Date "1970.08.04"]
[Round "11"]
[White "Mecking, Henrique"]
[Black "Tukmakov, Vladimir B"]
[Result "1/2-1/2"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 Be7 7. O-O O-O 8. Be3 Nc6 9. f4 Bd7 10. Nb3 a6 11. a4 b6 12. Rc1 Qc7 13. Bf3 Rfd8 14. g4 Bc8 15. g5 Nd7 16. Bg2 Na5 17. Nxa5 bxa5 18. Ne2 Nc5 19. b3 Bb7 20. Ng3 d5 21. exd5 Bxd5 22. Qe2 g6 23. Rcd1 Bxg2 24. Kxg2 Rac8 25. Rxd8+ Rxd8 26. Rd1 Qc6+ 27. Kg1 Rc8 28. Rd4 Rd8 29. Kf2 e5 30. Rxd8+ Bxd8 31. fxe5 Ne4+ 32. Nxe4 Qxe4 33. Ke1 Qxe5 34. h4 h6 35. Kd1 hxg5 36. Qd2 Be7 37. hxg5 Bb4 38. Qd8+ Kh7 39. Qd4 Qg3 40. c3 Bd6 41. c4 Be5 42. Qe4 f5 43. gxf6 Bxf6 44. c5 Qe5 45. Qd3 Qe6 46. Kc2 Kg7 47. Bd4 Bxd4 48. Qxd4+ Kf7 49. Qc3 Qf5+ 50. Kc1 Qf1+ 1/2-1/2