[Event "Las Piedras op"]
[Site "Las Piedras"]
[Date "1977.??.??"]
[Round "?"]
[White "Cao, Jorge"]
[Black "Osores, M."]
[Result "1-0"]
[ECO "A40"]
[PlyCount "37"]
[EventDate "1977.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "URU"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. d4 e5 2. dxe5 Nc6 3. Nf3 Qe7 4. e4 Nxe5 5. Be2 Nxf3+ 6. Bxf3 Nf6 7. 0-0 d6 8. Nc3 Be6 9. e5 Nd7 10. exd6 Qxd6 11. Bxb7 Rb8 12. Bd5 Nc5 13. b4 Na4 14. Qf3 Nxc3 15. Bc6+ Bd7 16. Bxd7+ Qxd7 17. Qxc3 Rb6 18. Bg5 Re6 19. Rad1 1-0

