[Event "Olympiad-07"]
[Site "Stockholm"]
[Date "1937.08.13"]
[Round "18"]
[White "Prins, Lodewijk"]
[Black "Sorensen, Ernst C"]
[Result "1/2-1/2"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Ne2 d5 6. a3 Be7 7. Ng3 b6 8. cxd5 exd5 9. Bd3 c5 10. dxc5 bxc5 11. O-O Nbd7 12. b3 Rb8 13. Ra2 Ne5 14. Bb1 Qc7 15. Rd2 Rd8 16. Nxd5 Nxd5 17. Rxd5 Rxd5 18. Qxd5 Bb7 19. Qd1 Ba6 20. f4 Bxf1 21. fxe5 Ba6 22. Qc2 g6 23. Bb2 Qb6 24. b4 cxb4 25. Bd4 b3 26. Qe4 Bb7 27. Qf4 Qc6 28. Be4 Qc1+ 29. Kf2 Qd2+ 30. Kf3 Qd1+ 31. Kf2 Rc8 32. e6 Rc2+ 33. Bxc2 Qxc2+ 34. Ne2 Qf5 35. Qxf5 gxf5 36. exf7+ Kxf7 37. Bb2 Bd5 38. g3 Ke8 39. Nd4 Bf6 40. Ke2 Kd7 41. Kd2 Kc8 42. Kc1 Bxd4 43. exd4 Kd7 44. Kd2 Ke6 45. Ke3 a6 46. Kf4 Kf6 47. h4 h6 48. Bc3 Ke6 49. g4 fxg4 50. Kxg4 Kf6 51. Kf4 1/2-1/2