[Event "IBM"]
[Site "Amsterdam"]
[Date "1965.??.??"]
[Round "5"]
[White "Szabo, Laszlo"]
[Black "Donner, Jan Hein"]
[Result "1/2-1/2"]

1. c4 e6 2. Nc3 Nf6 3. d4 Bb4 4. Bg5 h6 5. Bh4 c5 6. d5 d6 7. e3 exd5 8. cxd5 Nbd7 9. Ne2 Ne5 10. a3 Ba5 11. Nc1 Bd7 12. Na2 Ng6 13. Bg3 Ne4 14. Be2 Nxg3 15. hxg3 O-O 16. O-O Qe7 17. Qc2 f5 18. Nc1 Ne5 19. Nd3 Nxd3 20. Bxd3 Qe5 21. Rad1 1/2-1/2