[Event "US Open-78"]
[Site "Columbus"]
[Date "1977.08.??"]
[Round "?"]
[White "Haas, D."]
[Black "Benjamin, Joel"]
[Result "1-0"]
[ECO "B87"]
[PlyCount "99"]
[EventDate "1977.08.07"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 a6 7. Bb3 b5 8. a3 Be7 9. 0-0 0-0 10. Qf3 Qb6 11. Be3 Qb7 12. g4 Nc6 13. Nxc6 Qxc6 14. Qg2 Bb7 15. f3 a5 16. a4 b4 17. Ne2 Nd7 18. Nd4 Qc8 19. Rfd1 Nc5 20. Qf2 d5 21. exd5 Nxb3 22. cxb3 Bxd5 23. f4 Qb7 24. Qg3 Rfe8 25. Kf2 Rac8 26. Rd2 Bc5 27. Rad1 Ba7 28. Nb5 Bb8 29. g5 Qa8 30. Bd4 Bc6 31. Qe3 Qb7 32. Na7 Bxa7 33. Bxa7 Bd5 34. Bd4 Qe7 35. Qe5 Qf8 36. h4 Bxb3 37. Ra1 Red8 38. Qe3 Bc4 39. b3 Ba6 40. Rad1 Bb7 41. h5 Rd5 42. Rg1 Rcd8 43. h6 g6 44. Rgd1 Qd6 45. Ke1 Qd7 46. Bb6 Ra8 47. Rxd5 exd5 48. Qd4 Re8+ 49. Kf2 Qh3 50. Qg7# 1-0

[Event "US Open-78"]
[Site "Columbus"]
[Date "1977.08.??"]
[Round "?"]
[White "Haas, D."]
[Black "Pruner, Earl W"]
[Result "1/2-1/2"]
[ECO "B78"]
[PlyCount "62"]
[EventDate "1977.08.07"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 0-0 9. Bc4 Bd7 10. h4 Rc8 11. Bb3 Ne5 12. 0-0-0 Nc4 13. Bxc4 Rxc4 14. Nde2 h5 15. e5 Ne8 16. exd6 Nxd6 17. Bg5 Rc6 18. Nd4 Nc4 19. Qd3 Ne5 20. Qe3 Rd6 21. Nb3 Bc6 22. Rxd6 Qxd6 23. Rd1 Qc7 24. Qc5 e6 25. Ne4 f6 26. Be3 b6 27. Qd6 Qxd6 28. Nxd6 Rd8 29. Bf4 Bf8 30. Ne4 Rxd1+ 31. Kxd1 Bxe4 1/2-1/2

[Event "US Open-78"]
[Site "Columbus"]
[Date "1977.08.??"]
[Round "?"]
[White "Shapiro, Daniel E"]
[Black "Haas, D."]
[Result "0-1"]
[ECO "E18"]
[PlyCount "68"]
[EventDate "1977.08.07"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. 0-0 0-0 7. Nc3 Ne4 8. Nxe4 Bxe4 9. Ne1 Bxg2 10. Nxg2 d6 11. e4 c5 12. d5 e5 13. Ne3 g6 14. Bd2 Nd7 15. f4 exf4 16. gxf4 Bf6 17. Qc2 Bd4 18. Rae1 Qf6 19. b3 Rae8 20. Kh1 Qh4 21. Ng2 Qh3 22. Be3 Nf6 23. f5 Nxe4 24. Rf4 Ng3+ 25. Kg1 Nxf5 26. Bxd4 Rxe1+ 27. Nxe1 Nxd4 28. Qf2 Re8 29. Rxf7 Rxe1+ 30. Qxe1 Kxf7 31. Qf2+ Nf3+ 32. Kh1 Qxh2+ 33. Qxh2 Nxh2 34. Kxh2 Kf6 0-1

