[Event "Olympiad-19 Preliminaries A"]
[Site "Siegen"]
[Date "1970.09.07"]
[Round "3"]
[White "Barriera, F"]
[Black "Polugaevsky, Lev"]
[Result "0-1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Bg5 Be7 7. Bc4 a6 8. Bb3 O-O 9. f4
b5 10. a3 Bb7 11. Qe2 h6 12. Bh4 Nbd7 13. O-O-O Nc5 14. Bxf6 Bxf6 15. e5 Be7 16. Kb1 Qb6
17. Rhe1 dxe5 18. fxe5 Rad8 19. Qg4 b4 20. axb4 Qxb4 21. Na2 Qb6 22. Qe2 Rxd4 23. Rxd4
Nxb3 24. Rd7 Nd4 0-1