[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1964.01.26"]
[Round "15"]
[White "Portisch, Lajos"]
[Black "Ivkov, Borislav"]
[Result "1/2-1/2"]
1. Nf3 d5 2. d4 Nf6 3. c4 c6 4. cxd5 cxd5 5. Nc3 Nc6 6. Bf4 Bf5 7. e3 e6 8. Bd3 Bxd3 9. Qxd3 Bd6 10. Bxd6 Qxd6 11. O-O O-O 12. Nb5 Qe7 13. Nc3 Qd6 14. Nb5 Qe7 15. Nc3 Qd6 1/2-1/2