[Event "Vidmar Memorial-02"]
[Site "Ljubljana/Portoroz"]
[Date "1973.04.19"]
[Round "13"]
[White "Portisch, Lajos"]
[Black "Razuvaev, Yuri S"]
[Result "1/2-1/2"]

1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. O-O O-O 6. d4 Nbd7 7. Qc2 c6 8. b3 b6 9. Bb2 Ba6 10. Nbd2 c5 11. Rac1 Rc8 12. Qb1 dxc4 13. Nxc4 b5 14. Nce5 c4 15. Rfd1 Nb6 16. e4 Bb7 17. Nd2 cxb3 18. Rxc8 Qxc8 19. axb3 Qa8 20. Qd3 a6 1/2-1/2