[Event "Olympiad-17 Preliminaries A"]
[Site "Havana"]
[Date "1966.11.03"]
[Round "7"]
[White "Roth, Rolf"]
[Black "Olivera, Alfredo"]
[Result "1/2-1/2"]

1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. O-O e5 5. d3 Bd6 6. Nbd2 f5 7. e4 fxe4 8. dxe4 d4 9. c3 Nf6 10. Nc4 O-O 11. Qe2 Bg4 12. h3 Bh5 13. a4 Bc7 14. Rd1 h6 15. g4 Bf7 16. b3 Nd7 17. Ba3 Be6 18. b4 cxb4 19. cxb4 Rf7 20. b5 Na5 21. Ncd2 Nf8 1/2-1/2