[Event "Olympiad-10 Preliminaries B"]
[Site "Helsinki"]
[Date "1952.08.16"]
[Round "5"]
[White "Keller, Hans"]
[Black "Madsen, Edward"]
[Result "1/2-1/2"]

1. d4 Nf6 2. Nf3 d5 3. e3 c5 4. c3 Nc6 5. Bd3 Qc7 6. Nbd2 e5 7. dxe5 Nxe5 8. Nxe5 Qxe5 9. Nf3 Qc7 10. c4 dxc4 11. Bxc4 Be7 12. O-O O-O 13. Qc2 b6 14. Re1 Bb7 15. e4 Rad8 16. Bg5 Ng4 17. Bxe7 Qxe7 18. h3 Ne5 19. Nxe5 Qxe5 20. Re2 Rd4 21. Rae1 Bc6 22. a3 Rfd8 23. Qb3 Be8 24. Bd5 Rd6 25. Qe3 Rf6 26. Rd2 Rxd2 27. Qxd2 h6 28. Rd1 Bd7 29. Qc3 Qxc3 30. bxc3 Ba4 31. Rd2 Kf8 32. f3 Rd6 33. Kf2 Ke7 34. Ke3 f6 35. f4 Be8 36. g3 1/2-1/2