[Event "IBM"]
[Site "Amsterdam"]
[Date "1970.07.27"]
[Round "11"]
[White "Hartoch, Robert G"]
[Black "Spassky, Boris Vasilievich"]
[Result "0-1"]
1. c4 e5 2. g3 Nc6 3. Bg2 g6 4. Nc3 Bg7 5. Rb1 d6 6. b4 f5 7. b5 Nce7 8. e3 Nf6 9. d4 e4
10. Nge2 Be6 11. d5 Bf7 12. Nd4 Nd7 13. f3 exf3 14. Qxf3 O-O 15. O-O Nb6 16. Qe2 c5 17.
bxc6 bxc6 18. Bd2 cxd5 19. Nxd5 Rc8 20. Ba5 Nexd5 21. cxd5 Bxd4 22. exd4 Qf6 23. Bxb6 axb6
24. Rxb6 Qxd4+ 25. Qf2 Qd3 26. Rxd6 Rc2 27. Qf3 Qd4+ 28. Kh1 Re8 29. h3 Ree2 30. Rd8+ Kg7
31. Qa3 Be8 32. Rg1 Qxg1+ 0-1