[Event "Las Vegas National op"]
[Site "Las Vegas"]
[Date "1975.03.07"]
[Round "8"]
[White "Cotton, R."]
[Black "Cooper, JH."]
[Result "1-0"]
[ECO "C64"]
[PlyCount "35"]
[EventDate "1975.03.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. c3 a6 5. Bxc6 dxc6 6. 0-0 f6 7. d4 Bd6 8. dxe5 fxe5 9. Nxe5 Bxe5 10. Qh5+ Kf8 11. Qxe5 Qd6 12. Bf4 Qxe5 13. Bxe5 Kf7 14. Bxc7 Ne7 15. Nd2 Re8 16. Nc4 Ke6 17. Nb6 Bd7 18. Rad1 1-0

[Event "Las Vegas National op"]
[Site "Las Vegas"]
[Date "1975.03.05"]
[Round "5"]
[White "Cotton, R."]
[Black "Sisniega, Marcel"]
[Result "1-0"]
[ECO "B28"]
[PlyCount "58"]
[EventDate "1975.03.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 a6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Nde2 Bc5 7. Ng3 d6 8. Be2 h6 9. 0-0 Nc6 10. Be3 Be6 11. Nd5 Bxd5 12. exd5 Ne7 13. c4 Rc8 14. Bd3 Qd7 15. h3 0-0 16. Qf3 b5 17. b3 Ng6 18. Nf5 e4 19. Bxe4 Nxe4 20. Qxe4 Kh7 21. Qg4 Qc7 22. Bxh6 gxh6 23. Qh5 Bd4 24. Qxh6+ Kg8 25. Nxd4 Qe7 26. Rae1 Qf6 27. Ne6 Rfe8 28. Ng5 Qg7 29. Qxg7+ Kxg7 1-0

[Event "Las Vegas National op"]
[Site "Las Vegas"]
[Date "1975.03.05"]
[Round "6"]
[White "Salgado, Robert R"]
[Black "Cotton, R."]
[Result "1-0"]
[ECO "B25"]
[PlyCount "57"]
[EventDate "1975.03.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. f4 Nh6 6. d3 d6 7. Nge2 Rb8 8. a4 a6 9. Be3 0-0 10. h3 Qb6 11. 0-0 Nd4 12. Qd2 f5 13. Bxd4 cxd4 14. Nd5 Qd8 15. a5 fxe4 16. dxe4 e5 17. g4 Be6 18. g5 Nf7 19. h4 h6 20. f5 Bxd5 21. exd5 gxf5 22. Rxf5 hxg5 23. hxg5 Rc8 24. Raf1 Qc7 25. Be4 Nh8 26. Ng3 Ng6 27. Qh2 Nf4 28. R5xf4 exf4 29. Qh7+ 1-0

[Event "Las Vegas National op"]
[Site "Las Vegas"]
[Date "1975.03.04"]
[Round "4"]
[White "Hanken, Jerome B"]
[Black "Cotton, R."]
[Result "1-0"]
[ECO "A16"]
[PlyCount "77"]
[EventDate "1975.03.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. 0-0 0-0 5. c4 d6 6. Nc3 Nbd7 7. Rb1 a5 8. a3 Nb6 9. d3 Nfd7 10. Bd2 a4 11. Qc2 e5 12. Nd5 Nxd5 13. cxd5 Re8 14. Be3 b6 15. Ng5 Ra7 16. Ne4 Nc5 17. Nc3 Bd7 18. Na2 f5 19. Nb4 e4 20. dxe4 Nxe4 21. Bxe4 Rxe4 22. Nc6 Bxc6 23. Qxc6 Qe7 24. Bd2 Rxe2 25. Rfe1 Bd4 26. Be3 Rxe1+ 27. Rxe1 Bxe3 28. Rxe3 Qf7 29. Re8+ Kg7 30. Qc3+ Kh6 31. Qe3+ f4 32. gxf4 Qxd5 33. f5+ Kh5 34. Qh3+ Kg5 35. f4+ Kxf4 36. Qe3+ Kxf5 37. Rf8+ Kg4 38. Rf4+ Kh5 39. Qh3+ 1-0

[Event "Las Vegas National op"]
[Site "Las Vegas"]
[Date "1974.03.18"]
[Round "2"]
[White "Martinovsky, Eugene Simeon"]
[Black "Cotton, R."]
[Result "1-0"]
[ECO "B29"]
[PlyCount "39"]
[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. e4 c5 2. Nf3 Nf6 3. Nc3 Nc6 4. d4 d5 5. exd5 Nxd5 6. Bb5 Bg4 7. h3 Bh5 8. g4 Nxc3 9. bxc3 Bg6 10. Ne5 Qd5 11. 0-0 Rc8 12. Bc4 Qd8 13. Qf3 e6 14. Rb1 Nxe5 15. dxe5 Be7 16. Rxb7 Bxc2 17. Bb5+ Kf8 18. Bg5 f6 19. exf6 gxf6 20. Rd7 1-0

