[Event "IBM"]
[Site "Amsterdam"]
[Date "1973.??.??"]
[Round "1"]
[White "Ribli, Zoltan"]
[Black "Spassky, Boris Vasilievich"]
[Result "1/2-1/2"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 Nc6 7. Be3 e6 8. O-O Be7 9. f4 O-O 10. a4 Bd7 11. Nb3 b6 12. Bf3 Rc8 13. g4 Be8 14. Qe2 Nb4 15. g5 Nd7 16. Qg2 Kh8 17. Kh1 Nc5 1/2-1/2