[Event "National op"]
[Site "Las Vegas"]
[Date "1996.??.??"]
[Round "?"]
[White "Chase, Christopher"]
[Black "Mason, E."]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "2325"]
[PlyCount "61"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c3 0-0 12. Nc2 g6 13. a4 Rb8 14. axb5 axb5 15. Bd3 Bg7 16. Qe2 Qg5 17. 0-0 Bh3 18. f3 Be6 19. Ra6 Bxd5 20. exd5 Ne7 21. Nb4 Rfc8 22. Rxd6 Rd8 23. Rxd8+ Rxd8 24. Be4 Kh8 25. Rd1 Nf5 26. Bxf5 Qxf5 27. Nc6 Rf8 28. d6 Bf6 29. d7 Bd8 30. Qxb5 f6 31. Qc5 1-0

[Event "National op"]
[Site "Las Vegas"]
[Date "1996.??.??"]
[Round "?"]
[White "Mason, E."]
[Black "Kaptsan, Aron"]
[Result "0-1"]
[ECO "B07"]
[BlackElo "2185"]
[PlyCount "80"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. h3 Nf6 5. Be3 0-0 6. f4 c6 7. g4 b5 8. e5 Ne8 9. Bg2 d5 10. Bf3 Nd7 11. h4 Nb6 12. b3 f6 13. a4 b4 14. Na2 a5 15. Qd2 fxe5 16. dxe5 e6 17. 0-0-0 Nd7 18. Qg2 Ba6 19. g5 Qe7 20. Ne2 Bxe2 21. Bxe2 Nc7 22. h5 Rab8 23. hxg6 hxg6 24. Bd3 Kf7 25. Rh7 Rh8 26. Rdh1 Rxh7 27. Rxh7 Nf8 28. Rh1 c5 29. Qf2 c4 30. Bc5 Qd7 31. Be2 Qc6 32. Bd6 cxb3 33. Bb5 bxa2 34. Bxc6 a1Q+ 35. Kd2 Qc3+ 36. Kd1 Qxc6 37. Qa7 Rb7 38. Qxa5 b3 39. c3 d4 40. Rh3 b2 0-1

[Event "North American op"]
[Site "Las Vegas"]
[Date "1992.??.??"]
[Round "?"]
[White "Mason, E."]
[Black "Orlov, Georgi"]
[Result "0-1"]
[ECO "C02"]
[BlackElo "2500"]
[PlyCount "122"]
[EventDate "1992.12.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Bd7 6. Be2 Nge7 7. 0-0 Nf5 8. Bd3 cxd4 9. Bxf5 exf5 10. cxd4 Be6 11. Qb3 Qd7 12. Nc3 Be7 13. Bf4 h6 14. h4 0-0 15. Nd1 Na5 16. Qd3 Nc4 17. b3 Na3 18. Nb2 Rfc8 19. Rac1 Qb5 20. Qxb5 Nxb5 21. Na4 Ba3 22. Ra1 b6 23. Bc1 Rc7 24. Bxa3 Nxa3 25. Nb2 Rac8 26. Nd3 Rc2 27. Rfc1 R2c3 28. Rxc3 Rxc3 29. Rd1 Nb5 30. Rd2 Rc8 31. Kh2 Kf8 32. Nb4 a5 33. Nd3 Ke7 34. Nde1 Na3 35. Ng1 g5 36. hxg5 hxg5 37. Ne2 f4 38. f3 Bf5 39. g3 fxg3+ 40. Kxg3 b5 41. Kg2 b4 42. Kg3 Nb1 43. Rb2 Nc3 44. Ng2 Bd3 45. Nc1 Bg6 46. Ne2 Rh8 47. Ne3 Ke6 48. Rd2 Rh1 49. Kg2 Ra1 50. f4 Nxe2 51. f5+ Bxf5 52. Rxe2 Bb1 53. Kg3 Rxa2 54. Re1 Rb2 55. Rf1 Rxb3 56. Rf6+ Ke7 57. Kf2 Be4 58. Ra6 Rb2+ 59. Ke1 b3 60. Ra7+ Kd8 61. Rxf7 Rh2 0-1

[Event "USA Annual op-ch69"]
[Site "Aspen"]
[Date "1968.08.??"]
[Round "?"]
[White "Klein, Ron"]
[Black "Mason, E."]
[Result "1-0"]
[ECO "C40"]
[PlyCount "27"]
[EventDate "1968.08.11"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d5 3. Nxe5 dxe4 4. d4 h6 5. Bc4 Be6 6. Bxe6 fxe6 7. Qh5+ g6 8. Qxg6+ Ke7 9. Qf7+ Kd6 10. Nc4+ Kc6 11. Qxe6+ Bd6 12. Ne5+ Kb6 13. Qb3+ Ka6 14. Qa4+ 1-0

