[Event "IBM"]
[Site "Amsterdam"]
[Date "1965.??.??"]
[Round "6"]
[White "Barendregt, Johan"]
[Black "Szabo, Laszlo"]
[Result "1/2-1/2"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. c3 Nf6 6. Re1 O-O 7. d4 Qb6 8. Bc4 cxd4 9. e5 Ne8 10. cxd4 d6 11. Nc3 Bg4 12. Nd5 Qd8 13. Bg5 Qd7 14. Bb5 f6 15. Nxe7+ Qxe7 16. exf6 Qf7 17. fxg7 Nxg7 18. Be2 Rae8 19. Be3 Nf5 20. Qd2 Nxe3 21. fxe3 Re7 22. Rf1 Qd5 23. b3 Kg7 24. Rae1 Rfe8 25. Bc4 Qa5 26. Qxa5 Nxa5 27. Bb5 Rc8 28. h3 Bf5 29. g4 Be4 30. Nd2 Rc3 31. Nxe4 Rxe4 32. Rf3 a6 33. Bf1 Rxd4 34. exd4 Rxf3 35. Re7+ Rf7 36. Rxf7+ Kxf7 1/2-1/2