[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1971.01.12"]
[Round "1"]
[White "Najdorf, Miguel"]
[Black "Kuijpers, Frans"]
[Result "1/2-1/2"]

1. d4 d5 2. c4 c6 3. e3 Nf6 4. Nc3 g6 5. Nf3 Bg7 6. Bd2 O-O 7. Qb3 e6 8. Bd3 Nbd7 9. O-O Re8 10. Rfd1 a6 11. Rac1 Qe7 12. e4 dxe4 13. Nxe4 Nxe4 14. Bxe4 c5 15. d5 exd5 16. Bxd5 Nf6 17. Bg5 Qc7 18. Re1 Bg4 19. Nd2 Nxd5 20. cxd5 b5 21. Ne4 c4 22. Qa3 Qb6 23. d6 Re6 24. d7 f6 25. Qg3 Bf5 26. Be3 Qc6 27. Nc5 Re5 1/2-1/2