[Event "IBM"]
[Site "Amsterdam"]
[Date "1962.08.28"]
[Round "10"]
[White "Rellstab, Ludwig Sr"]
[Black "Heidenfeld, Wolfgang"]
[Result "1/2-1/2"]

1. d4 e6 2. Nf3 f5 3. g3 Nf6 4. Bg2 Be7 5. c4 d6 6. Nc3 O-O 7. O-O Qe8 8. Qc2 Qg6 9. Ne1 Nc6 10. d5 Nd8 11. dxe6 Nxe6 12. Nd5 Bd8 13. Nd3 Kh8 14. N3f4 Nxf4 15. Nxf4 Qe8 16. b3 Ne4 17. Bb2 Bf6 18. Rad1 Bxb2 19. Qxb2 a5 1/2-1/2