[Event "Interzonal-11a"]
[Site "Riga"]
[Date "1979.09.05"]
[Round "1"]
[White "Trois, Francisco R Torres"]
[Black "Polugaevsky, Lev"]
[Result "0-1"]
[WhiteElo "2415"]
[BlackElo "2625"]

1. Nf3 Nf6 2. c4 e6 3. d4 b6 4. g3 Ba6 5. Qa4 c5 6. Bg2 Bb7 7. O-O cxd4 8. Nxd4 Bxg2 9.
Kxg2 Be7 10. f3 O-O 11. Rd1 Qc8 12. Nc3 a6 13. e4 d6 14. Be3 Qb7 15. Rac1 Rc8 16. Qb3 Nbd7
17. Nb1 Nc5 18. Qc2 b5 19. Qe2 bxc4 20. Rxc4 d5 21. exd5 Nxd5 22. Bf2 Bg5 23. Kg1 h6 24.
h4 Bf6 25. b3 Rc7 26. Nd2 Rac8 27. Rdc1 Nb4 28. Ne4 Nxe4 29. fxe4 Rxc4 30. Rxc4 Rxc4 31.
bxc4 Qc7 32. a3 Bxd4 33. axb4 Qxg3+ 34. Kf1 Qh3+ 35. Ke1 Qc3+ 36. Kf1 Bxf2 37. Kxf2 Qxb4
38. Qa2 a5 39. Qc2 a4 40. c5 a3 41. c6 Qb2 42. Qxb2 axb2 43. c7 b1=Q 44. c8=Q+ Kh7 45. Qc4
Qh1 0-1