[Event "IBM"]
[Site "Amsterdam"]
[Date "1968.??.??"]
[Round "14"]
[White "Lengyel, Levente"]
[Black "Jongsma, Alexander"]
[Result "1/2-1/2"]

1. d4 Nf6 2. c4 Nc6 3. d5 Ne5 4. e4 e6 5. Qd4 Bb4+ 6. Bd2 Bxd2+ 7. Nxd2 d6 8. f4 Ng6 9. Qf2 exd5 10. cxd5 O-O 11. O-O-O c6 12. dxc6 bxc6 13. Ne2 Rb8 14. Nc3 d5 15. exd5 1/2-1/2