[Event "IBM"]
[Site "Amsterdam"]
[Date "1961.??.??"]
[Round "4"]
[White "Wade, Robert Graham"]
[Black "De Rooi, Paul"]
[Result "1-0"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 c5 6. d5 O-O 7. Nf3 e6 8. Be2 exd5 9. exd5 Bg4 10. O-O Nbd7 11. Ng5 Bxe2 12. Qxe2 Re8 13. Qd3 Ng4 14. Nf3 f5 15. h3 Ngf6 16. Ng5 Nf8 17. Rb1 h6 18. Ne6 Nxe6 19. dxe6 Rxe6 20. b4 cxb4 21. Rxb4 b6 22. Kh2 Kh7 23. Ba3 Rc8 24. Rd1 a5 25. Rb3 Qc7 26. Bxd6 Qxc4 27. Be5 Qxd3 28. Rxd3 g5 29. Bxf6 Bxf6 30. Rd7+ Re7 31. Nd5 Rxd7 32. Nxf6+ Kg7 33. Nxd7 Rc2 34. fxg5 1-0