[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1973.01.31"]
[Round "13"]
[White "Najdorf, Miguel"]
[Black "Andersson, Ulf"]
[Result "1/2-1/2"]
1. Nf3 c5 2. e4 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 d6 6. g3 Nf6 7. Bg2 Be7 8. Be3 Qc7 9. g4 Nc6 10. g5 Nd7 11. h4 b5 12. Nxc6 Qxc6 13. Qd4 Rg8 14. O-O-O Bb7 15. f4 Rc8 16. Kb1 Qc5 17. a3 Qxd4 18. Bxd4 Bd8 19. Bh3 Ke7 20. Rhe1 Ba5 21. b4 Bc7 1/2-1/2