[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1969.01.29"]
[Round "13"]
[White "Kavalek, Lubomir"]
[Black "Portisch, Lajos"]
[Result "1/2-1/2"]
1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Nb8 10. d4 Nbd7 11. Nbd2 Bb7 12. Bc2 Re8 13. b4 Bf8 14. a4 a5 15. axb5 axb4 16. Bb2 bxc3 17. Bxc3 c6 1/2-1/2