[Event "Las Vegas National op"]
[Site "Las Vegas"]
[Date "1974.03.18"]
[Round "1"]
[White "Frilling, Fred"]
[Black "Biyiasas, Peter"]
[Result "0-1"]
[ECO "A42"]
[PlyCount "56"]
[EventDate "1974.03.??"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. c4 g6 2. Nc3 Bg7 3. e4 d6 4. d4 Nc6 5. Be3 e5 6. d5 Nce7 7. Nf3 Bg4 8. h3 Bxf3 9. Qxf3 Bh6 10. Bd3 Bxe3 11. Qxe3 Nf6 12. g4 0-0 13. 0-0-0 Kg7 14. Be2 Nd7 15. g5 f5 16. h4 fxe4 17. Nxe4 Nf5 18. Qh3 Nd4 19. Bg4 Nc5 20. Nxc5 dxc5 21. Rdf1 c6 22. h5 Qxg5+ 23. Kb1 cxd5 24. hxg6 Qxg6+ 25. Bf5 Rxf5 26. Qd3 dxc4 27. Qe4 Rf4 28. Qxg6+ hxg6 0-1

[Event "Las Vegas National op"]
[Site "Las Vegas"]
[Date "1973.03.12"]
[Round "1"]
[White "Dubeck, Leroy"]
[Black "Frilling, Fred"]
[Result "1-0"]
[ECO "B17"]
[PlyCount "85"]
[EventDate "1973.03.??"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "USA"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Bc4 Ngf6 6. Ng5 e6 7. Qe2 Nb6 8. Bb3 h6 9. N5f3 a5 10. a4 Nbd5 11. Bd2 Be7 12. Ne5 Bd7 13. Ngf3 Qc7 14. 0-0 0-0 15. Rfd1 Be8 16. c4 Nb4 17. Rac1 c5 18. d5 exd5 19. cxd5 Nbxd5 20. Bxh6 Rd8 21. Bg5 Qb6 22. Ng6 fxg6 23. Qxe7 Bf7 24. Bxd5 Rxd5 25. Rxd5 Nxd5 26. Qxc5 Qxc5 27. Rxc5 b6 28. Rc1 Re8 29. Kf1 Nb4 30. Be3 Nd5 31. Bd4 Re4 32. Re1 Rf4 33. Re5 Rf5 34. Ke1 Nb4 35. Rxf5 gxf5 36. Kd2 Nd5 37. Ne5 Be6 38. Nc4 Nf4 39. Ne3 Nd5 40. Nxd5 Bxd5 41. g3 Bb3 42. Bxb6 Bxa4 43. Bxa5 1-0

