[Event "URS-ch48 Semifinal"]
[Site "Tallinn"]
[Date "1980.08.28"]
[Round "12"]
[White "Dvoirys, Semen I"]
[Black "Osnos, Viatcheslav"]
[Result "1/2-1/2"]
[BlackElo "2455"]

1. e4 c5 2. Nf3 Nf6 3. Nc3 e6 4. d4 cxd4 5. Nxd4 Nc6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 Qxd5 11. Qxd5 exd5 12. Bd3 Ne5 13. Bf4 Nxd3+ 14. cxd3 Bf5 15. Kd2 Kd7 16. Rac1 Rac8 17. d4 Rxc1 18. Rxc1 Rc8 19. Rxc8 Kxc8 1/2-1/2