[Event "IBM"]
[Site "Amsterdam"]
[Date "1962.08.25"]
[Round "9"]
[White "Hartoch, Robert G"]
[Black "Tan, Hiong Liong"]
[Result "1/2-1/2"]

1. g3 g6 2. Bg2 Bg7 3. Nf3 d5 4. O-O c5 5. d3 Nc6 6. Nbd2 e6 7. e4 Nge7 8. c3 b6 9. Qe2 Bb7 10. Re1 O-O 11. Nf1 b5 12. e5 d4 13. h4 dxc3 14. bxc3 b4 15. c4 Nf5 16. Bb2 a5 17. a4 1/2-1/2