[Event "Interzonal-09a"]
[Site "Leningrad"]
[Date "1973.06.21"]
[Round "13"]
[White "Tal, Mihail"]
[Black "Byrne, Robert Eugene"]
[Result "1/2-1/2"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Qb6 8. Qd2 Qxb2 9. Nb3 Qa3 10. Bxf6 gxf6 11. Be2 h5 12. O-O Nc6 13. Kh1 Bd7 14. Qe3 Rc8 15. Nb1 Qa4 16. c4 Na5 17. Qc3 Nxc4 18. Qxf6 Rh6 19. Qd4 Rh7 20. f5 exf5 21. Nc3 Bg7 22. Nxa4 Bxd4 23. Nxd4 Bxa4 24. Rac1 b5 25. Rxf5 Rc5 26. Bxc4 bxc4 27. Rxc5 dxc5 28. Rxc4 Bd7 29. Rxc5 Rh6 30. h3 Rd6 31. Nf3 Rd1+ 32. Kh2 Ra1 33. Ra5 Bb5 34. Nd4 Bf1 35. Nb3 Re1 36. Rf5 Bc4 37. Rxh5 Bxb3 38. axb3 Rxe4 39. Ra5 Re6 40. b4 Re4 41. Rxa6 Rxb4 42. Ra8+ Ke7 43. Rg8 f5 1/2-1/2