Yabra, Frederico VS Polugaevsky, Lev 1970.09.12

[Event "Olympiad-19 Preliminaries A"]
[Site "Siegen"]
[Date "1970.09.12"]
[Round "8"]
[White "Yabra, Frederico"]
[Black "Polugaevsky, Lev"]
[Result "0-1"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nbd7 7. Nc3 e5 8. dxe5 dxe5 9.
Qc2 c6 10. Rd1 Qe7 11. e4 Ne8 12. Bg5 f6 13. Be3 f5 14. Qd2 Nb6 15. Bg5 Qf7 16. b3 f4 17.
Bd8 h6 18. h3 fxg3 19. fxg3 Bxh3 20. Nxe5 Bxe5 21. Bxh3 Rxd8 0-1