[Event "Sioux Falls op"]
[Site "Sioux Falls"]
[Date "1998.??.??"]
[Round "?"]
[White "Berdahl, Myron C"]
[Black "Hare, Douglas S"]
[Result "0-1"]
[ECO "D12"]
[BlackElo "2210"]
[PlyCount "90"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. e3 Bf5 4. c4 c6 5. Nc3 e6 6. Be2 h6 7. 0-0 Nbd7 8. Re1 Bd6 9. Bd3 Ne4 10. Qc2 Ndf6 11. cxd5 exd5 12. Ne5 Bh7 13. f3 Nxc3 14. Bxh7 Nxh7 15. bxc3 0-0 16. e4 dxe4 17. Qxe4 Qc7 18. Bf4 Nf6 19. Qf5 Qc8 20. Qxc8 Raxc8 21. Rab1 b6 22. Ng6 Bxf4 23. Nxf4 Rc7 24. Re5 Rd8 25. Rbe1 Kf8 26. Kf2 Rcd7 27. Ke3 Re7 28. Kd3 Rxe5 29. Rxe5 Re8 30. Rxe8+ Kxe8 31. Kc4 Ke7 32. a4 Kd6 33. Nd3 Nd5 34. Ne1 a5 35. g3 b5+ 36. axb5 Nb6+ 37. Kb3 cxb5 38. Nd3 Nc4 39. f4 f6 40. Nc5 h5 41. Kc2 a4 42. Ne4+ Kd5 43. Nc5 Ne3+ 44. Kd3 Nf1 45. Kc2 Nxh2 0-1

[Event "Sioux Falls op"]
[Site "Sioux Falls"]
[Date "1998.??.??"]
[Round "?"]
[White "Berdahl, Myron C"]
[Black "Sevillano, Enrico"]
[Result "0-1"]
[ECO "D27"]
[BlackElo "2485"]
[PlyCount "116"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 c5 2. e3 d5 3. c4 dxc4 4. Bxc4 e6 5. Nf3 Nf6 6. 0-0 a6 7. dxc5 Qxd1 8. Rxd1 Bxc5 9. a4 b6 10. Nc3 Bb7 11. Bd2 Nc6 12. Be1 Ke7 13. Rac1 Rac8 14. h3 Rc7 15. Na2 Rhc8 16. b4 Bd6 17. b5 axb5 18. axb5 Na7 19. Be2 Rxc1 20. Rxc1 Rxc1 21. Nxc1 Bxf3 22. gxf3 Nd5 23. Nb3 e5 24. Kg2 Nc7 25. Ba5 bxa5 26. b6 a4 27. Nc1 Ncb5 28. bxa7 Nxa7 29. Na2 a3 30. Bd3 h6 31. h4 Nc8 32. Bc4 Nb6 33. Bb3 Nd7 34. Kh3 Nc5 35. Bc4 h5 36. Kg2 Bc7 37. Kh3 Ba5 38. Kg2 Bd2 39. Kh3 Nb7 40. Kg2 Nd6 41. Bd3 Kf6 42. e4 Nc8 43. Bc4 Ne7 44. Kh3 Ng6 45. Kg3 Ke7 46. Kh3 Kf8 47. Kg3 Ba5 48. Nc1 Bd8 49. Nd3 Bxh4+ 50. Kh3 Be7 51. Kg3 Bd6 52. Kh3 Ke7 53. Kg3 Kf6 54. Kh3 Nf8 55. f4 exf4 56. e5+ Bxe5 57. Nxe5 Kxe5 58. Bxf7 Ne6 0-1

[Event "US Open-80"]
[Site "Chicago"]
[Date "1979.??.??"]
[Round "?"]
[White "Berdahl, Myron C"]
[Black "Jones, Kenneth E"]
[Result "0-1"]
[ECO "B45"]
[PlyCount "50"]
[EventDate "1979.07.29"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 e6 2. Nf3 c5 3. e4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Be3 Bb4 7. Bd3 d5 8. Nxc6 bxc6 9. e5 d4 10. Bd2 Nd7 11. Ne4 Bxd2+ 12. Qxd2 Nxe5 13. Qb4 Nxd3+ 14. cxd3 Qe7 15. Qxd4 0-0 16. 0-0 Rd8 17. Qc5 Qc7 18. Rac1 Ba6 19. Rfd1 Bxd3 20. Ng3 Ba6 21. Qg5 h6 22. Qg4 Qe5 23. Rxc6 Be2 24. Re1 Rd1 25. Qb4 a5 0-1

