[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1972.01.21"]
[Round "9"]
[White "Portisch, Lajos"]
[Black "Hort, Vlastimil"]
[Result "1/2-1/2"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. cxd5 cxd5 5. Nc3 Nc6 6. Bf4 e6 7. e3 Bd6 8. Bg3 O-O 9. a3 b6 10. Nb5 Bb8 11. Bxb8 Nxb8 12. Rc1 a6 13. Nc3 Bb7 14. Be2 Qd6 1/2-1/2