[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1971.01.22"]
[Round "9"]
[White "Kuijpers, Frans"]
[Black "Kortschnoj, Viktor Lvovich"]
[Result "0-1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Nf3 Qa5 8. Qd2 Nbc6 9. a4
f6 10. Ba3 fxe5 11. dxe5 Qxa4 12. Be2 b6 13. c4 Nd8 14. O-O Qd7 15. Ng5 h6 16. Nh3 O-O 17.
Rfd1 Ndc6 18. Bb2 Bb7 19. Nf4 d4 20. c3 Na5 21. Ra3 d3 22. Bxd3 Qc6 23. f3 Rad8 24. Qc1
Qc8 25. Nh3 Qc7 26. Qc2 Qxe5 27. Raa1 Nec6 28. Nf2 Qc7 29. Qe2 Ne5 30. Bb1 Rxd1+ 31. Nxd1
Nexc4 32. Qc2 Rf5 33. Qf2 Rh5 34. g3 Rd5 35. Ba2 Rd2 36. Qe1 Qf7 37. f4 Rg2+ 0-1