[Event "Olympiad-10 Preliminaries B"]
[Site "Helsinki"]
[Date "1952.08.19"]
[Round "7"]
[White "Stahlberg, Gideon"]
[Black "Koch, Berthold"]
[Result "1/2-1/2"]

1. Nf3 Nf6 2. c4 b6 3. g3 Bb7 4. Bg2 e6 5. O-O Be7 6. Nc3 O-O 7. b3 Ne4 8. Nxe4 Bxe4 9. d3 Bb7 10. e4 d6 11. Qc2 e5 12. d4 exd4 13. Nxd4 Bf6 14. Bb2 g6 15. e5 Bxg2 16. exf6 Bxf1 17. Qd2 Qxf6 18. Rxf1 Nd7 19. Nc6 Qe6 20. Re1 Ne5 21. Kg2 Rae8 22. f4 Nxc6 23. Rxe6 fxe6 24. b4 a5 25. b5 Nd8 26. h4 Nf7 27. h5 e5 28. Qd3 Kg7 29. Qf3 Re7 30. Qg4 Nh6 31. Qe2 Nf7 32. Qg4 Nh6 33. Qe2 Nf7 1/2-1/2