[Event "Match/Nation HUN-URS"]
[Site "Hungary"]
[Date "1969.??.??"]
[Round "?"]
[White "Portisch, Lajos"]
[Black "Polugaevsky, Lev"]
[Result "1/2-1/2"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Qd3 a6 11. Ne4 b5 12. Nxf6+ Qxf6 13. Qe4 Bb7 14. Bd3 g6 15. dxc5 Nb4 16. Qe5 Qxe5 17. Nxe5 Nxd3 18. Nxd3 Rfd8 19. Ne5 Bc7 20. Nf3 Bxf3 21. gxf3 a5 22. e4 Be5 23. Rb1 b4 24. a4 Bd4 25. Be3 Bxe3 26. fxe3 Rac8 27. Rbc1 Rd3 28. Rc4 Kf8 29. c6 Ke7 30. Rc5 Kd6 31. Rfc1 1/2-1/2