[Event "Interzonal-08"]
[Site "Palma de Mallorca"]
[Date "1970.12.12"]
[Round "23"]
[White "Ujtumen, Tudev"]
[Black "Portisch, Lajos"]
[Result "0-1"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 b6 6. h3 Bb7 7. Be3 d6 8. Qd2 Qd7 9. f4 f5 10. Nf3 Nd4 11. Nh4 Nf6 12. O-O O-O 13. Rae1 Rae8 14. Kh2 Kh8 15. Nd5 Ng8 16. Bg1 e6 17. Ne3 Nf6 18. c3 Nc6 19. Nd1 Ba6 20. exf5 gxf5 21. Rf2 Nd8 22. Rfe2 Bh6 23. c4 Rg8 24. Qc3 Bg7 25. Qa3 Bc8 26. d4 Nh5 27. dxc5 dxc5 28. Bf2 Bf6 29. Bf3 Qf7 30. Ng2 Bb7 31. Bxb7 Qxb7 32. Nc3 Bd4 33. Bxd4+ cxd4 34. Nb5 Rxg3 35. Qxa7 Qf3 36. Qa3 Rxh3+ 37. Kg1 Qxa3 38. Nxa3 Rg8 39. Rf1 Ng3 40. Rd2 Rh1+ 0-1