1. c4 c5 2. Nc3 Nf6 3. g3 Nc6 4. Bg2 e6 5. d3 Be7 6. e4 d6 7. Nge2 Nd4 8. O-O Bd7 9. f4 e5 10. f5 h5 11. h3 Qb6 12. Rb1 O-O-O 13. Bg5 Rdg8 14. Kh1 Qd8 15. b4 g6 16. bxc5 dxc5 17. Bxf6 Bxf6 18. Nxd4 exd4 19. e5 Bxe5 20. Rxb7 dxc3 21. Qf3 Qf6 22. Rfb1 Kd8 23. Qd5 Ke8 24. Rxd7 Kf8 25. Rbb7 Rh7 26. Qxc5+ Kg7 27. Qd5 Kh6 28. fxg6 c2 29. gxh7 c1=Q+ 30. Kh2 Bxg3#

0-1

Source(s): Cork Examiner, August 30, 1967 p. 11 (clipping from John Gibson's records).

Event information: Match scorecard and final table, OlimpBase.

Note: “Gibson remarks: “Van Manen had to make 21 moves in half-an-hour and I had to make 20 in the same time. My opponent then spent 27 minutes on his next four moves with the result that he had only three quarters of a minute left on his clock when I mated him.”” (see Source).