[Event "North American op"]
[Site "Oklahoma"]
[Date "2008.05.26"]
[Round "7"]
[White "Dumas, Steven R"]
[Black "Chen, Hans"]
[Result "1-0"]
[ECO "A15"]
[PlyCount "57"]
[EventDate "2008.05.23"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "USA"]
[SourceTitle "CBM 124 Extra"]
[Source "ChessBase"]
[SourceDate "2008.07.03"]
[SourceVersion "1"]
[SourceVersionDate "2008.07.03"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 d5 3. Bg2 dxc4 4. Qa4+ Bd7 5. Qxc4 Nc6 6. Nc3 e5 7. b3 Rb8 8. Bb2 Nd4 9. Rc1 Bf5 10. e4 Bd7 11. Nf3 b5 12. Qd3 b4 13. Nd5 Bb5 14. Qb1 c6 15. Nxf6+ Qxf6 16. Bxd4 exd4 17. e5 Qe6 18. d3 Bd6 19. 0-0 Bc7 20. Nxd4 Qg6 21. Nxb5 Bxe5 22. Bxc6+ Ke7 23. Rfe1 Qf6 24. Rxe5+ Qxe5 25. Re1 Qxe1+ 26. Qxe1+ Kd8 27. Qxb4 a6 28. Qd6+ Kc8 29. Qc7# 1-0

[Event "North American op"]
[Site "Oklahoma"]
[Date "2008.05.25"]
[Round "5"]
[White "Chen, Hans"]
[Black "Juett, Jason Robert"]
[Result "0-1"]
[ECO "B70"]
[BlackElo "2015"]
[PlyCount "98"]
[EventDate "2008.05.23"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "USA"]
[SourceTitle "CBM 124 Extra"]
[Source "ChessBase"]
[SourceDate "2008.07.03"]
[SourceVersion "1"]
[SourceVersionDate "2008.07.03"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. g3 Nc6 7. Be3 Bg4 8. Qd2 Bg7 9. Bg2 0-0 10. 0-0 Rc8 11. Nxc6 bxc6 12. f4 Be6 13. f5 Bd7 14. Kh1 Ng4 15. Bd4 Ne5 16. b3 c5 17. Be3 Ng4 18. Bf4 Qa5 19. Rf3 Ne5 20. Rf2 Nc6 21. Rf3 Nd4 22. Rf2 Nb5 23. Nxb5 Qxd2 24. Bxd2 Bxa1 25. c4 Bxb5 26. cxb5 Rb8 27. a4 Be5 28. Bf1 Kg7 29. b4 cxb4 30. Bxb4 Rfc8 31. Bd2 Kg8 32. a5 Bd4 33. Rf3 Rc2 34. Rd3 Bc5 35. Rd5 e6 36. fxe6 fxe6 37. Rd3 Rxb5 38. Rc3 Rbb2 39. Rxc2 Rxc2 40. Bf4 Kf7 41. e5 d5 42. Bb5 Ke7 43. Bg5+ Kf7 44. h3 Bd4 45. Bf6 Rc3 46. Kg2 Re3 47. Kf2 Rb3+ 48. Kg2 Rxb5 49. a6 Rb2+ 0-1

[Event "North American op"]
[Site "Oklahoma"]
[Date "2008.05.24"]
[Round "4"]
[White "Chen, Hans"]
[Black "Tyagi, Kushan"]
[Result "1-0"]
[ECO "B40"]
[PlyCount "39"]
[EventDate "2008.05.23"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "USA"]
[SourceTitle "CBM 124 Extra"]
[Source "ChessBase"]
[SourceDate "2008.07.03"]
[SourceVersion "1"]
[SourceVersionDate "2008.07.03"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 g6 5. g3 Qc7 6. Bg2 b5 7. 0-0 Bb7 8. Nc3 Bb4 9. Nde2 Nf6 10. Bg5 Be7 11. f3 d6 12. Kh1 Nbd7 13. a4 b4 14. Na2 d5 15. Qd4 Qxc2 16. exd5 Bxd5 17. Rac1 Qxa4 18. Bxf6 Nxf6 19. Nac3 bxc3 20. Qxa4+ 1-0

[Event "North American op"]
[Site "Oklahoma"]
[Date "2008.05.24"]
[Round "3"]
[White "McCann, Sam"]
[Black "Chen, Hans"]
[Result "1-0"]
[ECO "E12"]
[PlyCount "63"]
[EventDate "2008.05.23"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "USA"]
[SourceTitle "CBM 124 Extra"]
[Source "ChessBase"]
[SourceDate "2008.07.03"]
[SourceVersion "1"]
[SourceVersionDate "2008.07.03"]
[SourceQuality "1"]

1. d4 d5 2. c4 Nf6 3. Nc3 b6 4. Bg5 e6 5. Nf3 Bb7 6. e3 Be7 7. Bd3 Ne4 8. Bxe7 Qxe7 9. Rc1 0-0 10. 0-0 c5 11. b3 Nd7 12. Qc2 f5 13. cxd5 exd5 14. Bb5 Rad8 15. Bxd7 Rxd7 16. Ne5 Rc7 17. Nb5 Ba6 18. Nxc7 Bxf1 19. Nxd5 Qd8 20. Nc6 Qg5 21. Rxf1 Kh8 22. Nxa7 cxd4 23. exd4 Nd6 24. f4 Qg6 25. Re1 Qf7 26. Qc6 Re8 27. Rxe8+ Nxe8 28. Qc8 Kg8 29. Nc7 Kf8 30. Nxe8 Qe7 31. Nd6+ Qe8 32. Qxe8# 1-0

[Event "North American op"]
[Site "Oklahoma"]
[Date "2008.05.23"]
[Round "2"]
[White "Chen, Hans"]
[Black "Baxter, Roger"]
[Result "1-0"]
[ECO "B07"]
[PlyCount "87"]
[EventDate "2008.05.23"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "USA"]
[SourceTitle "CBM 124 Extra"]
[Source "ChessBase"]
[SourceDate "2008.07.03"]
[SourceVersion "1"]
[SourceVersionDate "2008.07.03"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. g3 Bg7 5. Bg2 0-0 6. Nge2 Nc6 7. 0-0 e5 8. d5 Ne7 9. Be3 Ng4 10. Bg5 h6 11. Be3 Nxe3 12. fxe3 Kh7 13. Rf3 Bg4 14. Rf2 Qd7 15. Qf1 Ng8 16. h3 Bxh3 17. Bxh3 Qe7 18. Rf3 h5 19. Qf2 Nf6 20. Rf1 Ng4 21. Bxg4 hxg4 22. Rxf7 Qg5 23. Qh2+ Kg8 24. Rxf8+ Bxf8 25. Kf2 Bh6 26. Nd1 Kg7 27. Qh4 Rh8 28. Kg2 a6 29. Rh1 Rf8 30. Qxg5 Bxg5 31. Rf1 Bf6 32. c4 Kh6 33. b4 Kg5 34. c5 Rd8 35. Ndc3 Ra8 36. Rb1 Rb8 37. b5 Ra8 38. b6 dxc5 39. bxc7 b5 40. a4 b4 41. Nb5 axb5 42. axb5 Be7 43. b6 Bd6 44. b7 1-0

[Event "North American op"]
[Site "Oklahoma"]
[Date "2008.05.23"]
[Round "1"]
[White "Temple, Judson L"]
[Black "Chen, Hans"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "1961"]
[PlyCount "89"]
[EventDate "2008.05.23"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "USA"]
[SourceTitle "CBM 124 Extra"]
[Source "ChessBase"]
[SourceDate "2008.07.03"]
[SourceVersion "1"]
[SourceVersionDate "2008.07.03"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nc6 3. Bf4 Nf6 4. e3 g6 5. Be2 Bg7 6. Nbd2 0-0 7. c3 Bf5 8. 0-0 Nd7 9. Nh4 e6 10. Nxf5 exf5 11. Qb3 Rb8 12. Qxd5 a6 13. Rfe1 Ne7 14. Qc4 Rc8 15. Qb3 b5 16. a3 Nb6 17. e4 fxe4 18. Nxe4 Ned5 19. Bg3 Re8 20. Nc5 Ra8 21. Bf3 c6 22. Rxe8+ Qxe8 23. Bxd5 cxd5 24. Nd3 Qe2 25. Qd1 Qe4 26. Nc5 Qe7 27. Qe1 Qg5 28. Qe2 Nc4 29. Re1 a5 30. h4 Qd2 31. Qxd2 Nxd2 32. Nd3 a4 33. Nb4 Rd8 34. Re7 Bf8 35. Rb7 Bxb4 36. axb4 Nc4 37. Rxb5 Nxb2 38. Ra5 Rc8 39. b5 Rxc3 40. b6 Rb3 41. Bc7 a3 42. Ra7 Nc4 43. b7 a2 44. b8Q+ Rxb8 45. Bxb8 1-0

[Event "Stillwater Winter op"]
[Site "Oklahoma"]
[Date "2008.02.18"]
[Round "7"]
[White "Chen, Hans"]
[Black "Stepp, Robert V"]
[Result "0-1"]
[ECO "B07"]
[PlyCount "106"]
[EventDate "2008.02.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "CBM 122 Extra"]
[Source "ChessBase"]
[SourceDate "2008.03.04"]
[SourceVersion "1"]
[SourceVersionDate "2008.03.04"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Bd3 Bg7 5. Nge2 0-0 6. 0-0 Nc6 7. d5 Ne5 8. f4 Nxd3 9. Qxd3 c6 10. h3 cxd5 11. Nxd5 Nxd5 12. Qxd5 Qb6+ 13. Kh2 Be6 14. Qd3 Rfc8 15. c3 Bc4 16. Qf3 Rc7 17. Rf2 Rac8 18. Nd4 e5 19. fxe5 dxe5 20. Nc2 Rd8 21. Ne3 Rd3 22. b3 Ba6 23. Rd2 Qxe3 24. Qxe3 Rxe3 25. Rd8+ Bf8 26. Bxe3 Kg7 27. Bh6+ Kxh6 28. Rxf8 Rxc3 29. Re1 Kg7 30. Re8 f6 31. Ra8 Rc2 32. a4 Rb2 33. Re3 Bf1 34. Rg3 a6 35. Rd8 b5 36. Rd7+ Kh6 37. a5 Re2 38. b4 Rxe4 39. Rd6 f5 40. Rxa6 Rxb4 41. Rf3 Bc4 42. Rxf5 e4 43. Rh5+ Kg7 44. Ra7+ Kf6 45. Rhxh7 e3 46. Rhe7 e2 47. Kg1 Rb1+ 48. Kf2 Rf1+ 49. Kg3 e1Q+ 50. Kg4 Qxe7 51. Ra6+ Qe6+ 52. Rxe6+ Kxe6 53. a6 Ra1 0-1

[Event "Stillwater Winter op"]
[Site "Oklahoma"]
[Date "2008.02.17"]
[Round "3"]
[White "Montero, JA."]
[Black "Chen, Hans"]
[Result "1-0"]
[ECO "A29"]
[PlyCount "71"]
[EventDate "2008.02.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "CBM 122 Extra"]
[Source "ChessBase"]
[SourceDate "2008.03.04"]
[SourceVersion "1"]
[SourceVersionDate "2008.03.04"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 Nc6 3. Bg2 e5 4. c4 Bc5 5. 0-0 0-0 6. Nc3 d6 7. a3 a5 8. Qc2 Ne8 9. h4 f5 10. Bh3 e4 11. Ne1 f4 12. Bxc8 fxg3 13. Be6+ Kh8 14. Nxe4 gxf2+ 15. Kg2 Nd4 16. Qd3 Nxe6 17. e3 Nf4+ 18. exf4 fxe1Q 19. Rxe1 Qxh4 20. Rh1 Qg4+ 21. Ng3 h6 22. f5 Nf6 23. b4 axb4 24. Bb2 Rae8 25. axb4 Bb6 26. Rae1 Rxe1 27. Rxe1 Re8 28. Rh1 Ne4 29. Rxh6+ Kg8 30. Rg6 Qf4 31. Qd5+ Kf8 32. Nxe4 Rxe4 33. Bxg7+ Ke7 34. Bf6+ Kd7 35. Rg7+ Ke8 36. Qg8# 1-0

[Event "Stillwater Winter op"]
[Site "Oklahoma"]
[Date "2008.02.16"]
[Round "1"]
[White "Chen, Hans"]
[Black "Orton, William R"]
[Result "0-1"]
[ECO "A04"]
[BlackElo "2158"]
[PlyCount "50"]
[EventDate "2008.02.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "CBM 122 Extra"]
[Source "ChessBase"]
[SourceDate "2008.03.04"]
[SourceVersion "1"]
[SourceVersionDate "2008.03.04"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. g3 g6 4. Bg2 Bg7 5. 0-0 e6 6. Re1 d6 7. d3 Nge7 8. Bg5 Bxb2 9. Nbd2 Bxa1 10. Qxa1 e5 11. Bf6 0-0 12. Qc1 Qd7 13. Ng5 Nd4 14. Nb3 h6 15. Bh3 Qe8 16. Nxd4 cxd4 17. Nf3 g5 18. Nxg5 Bxh3 19. Nxh3 Kh7 20. g4 Ng8 21. Bh4 Qe6 22. Ng5+ hxg5 23. Qxg5 Qg6 24. Qh5+ Qxh5 25. gxh5 Kh6 0-1

