[Event "IBM"]
[Site "Amsterdam"]
[Date "1972.??.??"]
[Round "?"]
[White "Donner, Jan Hein"]
[Black "Malich, Burkhard"]
[Result "1/2-1/2"]

1. d4 Nf6 2. c4 g6 3. g3 c6 4. Bg2 d5 5. Nf3 Bg7 6. O-O O-O 7. b3 Bf5 8. Bb2 a5 9. Nbd2 Ne4 10. Re1 Nxd2 11. Qxd2 Be4 12. Rac1 e6 13. Bf1 Bxf3 14. exf3 Na6 15. f4 Nc7 16. a4 dxc4 17. bxc4 Qd7 18. Red1 Rfd8 19. Bg2 Qe7 20. d5 Bxb2 21. Qxb2 cxd5 22. Qxb7 Rab8 23. Qa7 Ra8 24. Qe3 Qd6 25. cxd5 Nxd5 26. Qc5 Qd7 27. Qc6 Qxc6 28. Rxc6 Nb4 29. Rxd8+ Rxd8 30. Rc5 Rd1+ 31. Bf1 Rd5 32. Rc8+ Kg7 33. Kg2 Rd2 34. Kf3 Ra2 35. Bb5 Ra3+ 36. Kg2 Nd5 37. h3 h5 38. h4 Ra2 1/2-1/2