[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1972.01.26"]
[Round "13"]
[White "Smejkal, Jan"]
[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. d3 Nbd7 11. Nbd2 Bb7 12. Nf1 Nc5 13. Bc2 Re8 14. Ng3 Bf8 15. b4 Ncd7 16. Bb3 h6 17. a3 a5 18. Bb2 c5 1/2-1/2