[Event "World U20-ch04"]
[Site "Toronto"]
[Date "1957.08.08"]
[Round "5"]
[White "Jongsma, Alexander"]
[Black "Lombardy, William James"]
[Result "0-1"]

1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 d6 5. Nf3 O-O 6. O-O e5 7. d3 Nh5 8. Qc2 Nc6 9. Rb1 Bg4 10. e3 Qd7 11. b4 Bh3 12. Bxh3 Qxh3 13. c5 Nf6 14. b5 Nd8 15. cxd6 cxd6 16. Ba3 Ne6 17. Bxd6 Rfc8 18. Rfc1 Ng4 19. Qe2 f5 20. Qf1 Qxf1+ 21. Kxf1 e4 22. Nd4 Nxd4 23. exd4 exd3 24. Nd5 Rc2 25. Rxc2 dxc2 26. Rc1 Rd8 27. Ne7+ Kf7 28. Ba3 Bf8 29. Rxc2 Rd7 30. h3 Nf6 31. Nc6 bxc6 32. bxc6 Rc7 33. Bxf8 Kxf8 34. Rc5 Ke7 0-1