[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1946.01.08"]
[Round "4"]
[White "Koomen, Willem"]
[Black "De Groot, Adriaan"]
[Result "1-0"]
1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 d5 5. e3 O-O 6. Qb3 c6 7. Bd2 e6 8. Bd3 Nbd7 9. O-O Nb6 10. cxd5 exd5 11. Ne2 a5 12. a4 Ne4 13. Ng3 Nxd2 14. Nxd2 Re8 15. Qc2 Nd7 16. Nb3 Qh4 17. Rfe1 Nf6 18. Nd2 Ng4 19. Nf3 Qd8 20. h3 Nh6 21. Rab1 f5 22. Qd2 Bf8 23. Ne2 Nf7 24. Qc2 Bb4 25. Red1 Qf6 26. Nf4 Bd6 27. h4 Re7 28. Rbc1 Be6 29. g3 Rae8 30. Kg2 Bc8 31. Qc3 Bb4 32. Qb3 Nh6 33. Rc2 Ng4 34. Rdc1 Be6 35. Ng5 Bf7 36. Re2 Bd6 37. Rce1 h6 38. Nf3 g5 39. hxg5 hxg5 40. Nh3 Nxe3+ 41. Rxe3 g4 42. Rxe7 Rxe7 43. Rxe7 gxf3+ 44. Kh2 Bxe7 45. Qxb7 Kg7 46. Bxf5 Bd6 47. Qd7 c5 48. Bg4 cxd4 49. Bh5 Be5 50. Qg4+ Kh6 51. Bxf7 1-0