[Event "IBM"]
[Site "Amsterdam"]
[Date "1969.??.??"]
[Round "14"]
[White "Portisch, Lajos"]
[Black "Damjanovic, Mato"]
[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. Bd3 b6 10. O-O Bxg3 11. hxg3 Bb7 12. Rc1 Rc8 13. Qe2 1/2-1/2