[Event "Foxwoods op 15th"]
[Site "Ledyard"]
[Date "2023.04.08"]
[Round "6"]
[White "Jefferson, Matheu"]
[Black "Duong, Thanh Nha"]
[Result "0-1"]
[ECO "B30"]
[WhiteElo "1923"]
[BlackElo "2086"]
[PlyCount "110"]
[EventDate "2023.04.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 Qc7 4. 0-0 a6 5. Bxc6 Qxc6 6. Re1 d6 7. d4 cxd4 8. Nxd4 Qc7 9. Nc3 e6 10. Bg5 g6 11. Qd2 f6 12. Bh4 Bd7 13. f4 Kf7 14. f5 e5 15. Nb3 Bc6 16. Nd5 Bxd5 17. Qxd5+ Kg7 18. Rad1 Nh6 19. Rf1 g5 20. Bf2 Rc8 21. c4 Be7 22. Qe6 Rhd8 23. Rd3 Nf7 24. Rc1 b6 25. Nd2 b5 26. Rdc3 b4 27. Rd3 Kf8 28. Qd5 a5 29. b3 Ra8 30. h4 h6 31. hxg5 hxg5 32. Rh3 Kg7 33. Re1 Rh8 34. Ree3 Nh6 35. Rhg3 a4 36. Rd3 Nf7 37. Nf1 Ra5 38. c5 dxc5 39. Qe6 Rd8 40. Rh3 Rxd3 41. Rxd3 Nd8 42. Qc4 axb3 43. axb3 Ra1 44. g3 Qc6 45. Kg2 Rc1 46. Qd5 Qxd5 47. Rxd5 Nc6 48. Rd7 Kf8 49. Ne3 Ke8 50. Rc7 Nd4 51. Nd5 Bd8 52. Rh7 Nxb3 53. Rh8+ Kd7 54. Rh7+ Kc8 55. Rh8 Nd2 0-1

[Event "Foxwoods op 15th"]
[Site "Ledyard"]
[Date "2023.04.07"]
[Round "5"]
[White "Li, Michael2222"]
[Black "Jefferson, Matheu"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "1708"]
[BlackElo "1923"]
[PlyCount "126"]
[EventDate "2023.04.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Bg5 c6 5. Qd2 Nbd7 6. f3 b5 7. a3 Bb7 8. Nge2 a5 9. Ng3 Bg7 10. Be2 0-0 11. 0-0 Qc7 12. b4 Ba6 13. Be3 Rfc8 14. Ra2 Nb6 15. f4 Bb7 16. Rfa1 Qd8 17. Qe1 Nfd7 18. e5 Nc4 19. Bxc4 bxc4 20. Nce4 Nb6 21. c3 Nd5 22. Bd2 Ra7 23. Ng5 Rca8 24. f5 axb4 25. cxb4 Qb6 26. Qf2 Rf8 27. Ne2 dxe5 28. fxg6 fxg6 29. Qh4 h5 30. Qe4 Bc8 31. Qxg6 Bf5 32. Qxh5 exd4 33. Ng3 d3+ 34. Kh1 Nf6 35. Qh4 Bg6 36. Qxc4+ Nd5 37. Re1 e5 38. Be3 Qa6 39. b5 Qa5 40. Rd1 Qa4 41. Qxa4 Rxa4 42. Bd2 cxb5 43. Rb2 Rb8 44. Rb3 Bf8 45. Ra1 Be7 46. h3 Nf4 47. Nf3 Bd6 48. Rab1 e4 49. Nh4 Bf7 50. Rxb5 Rxb5 51. Rxb5 Ne2 52. Nxe2 dxe2 53. Nf5 Bf4 54. Be1 Rxa3 55. Rb1 Rd3 56. Rb2 Bh5 57. g4 Rxh3+ 58. Kg2 Bxg4 59. Ne7+ Kf7 60. Nd5 Be5 61. Rb7+ Ke6 62. Nc7+ Kf5 63. Rb5 Rf3 0-1

[Event "Foxwoods op 15th"]
[Site "Ledyard"]
[Date "2023.04.06"]
[Round "3"]
[White "Gaw, Chloe"]
[Black "Jefferson, Matheu"]
[Result "1-0"]
[ECO "A67"]
[WhiteElo "1911"]
[BlackElo "1923"]
[PlyCount "47"]
[EventDate "2023.04.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. d4 e6 2. c4 Nf6 3. Nc3 c5 4. d5 exd5 5. cxd5 d6 6. e4 g6 7. f4 Bg7 8. Bb5+ Nfd7 9. a4 0-0 10. Nf3 Na6 11. 0-0 Nb4 12. Re1 a6 13. Bf1 Re8 14. Bd2 b6 15. Qb3 Bb7 16. Nb1 Rc8 17. Bc3 Rxe4 18. Rxe4 Bxd5 19. Bc4 Bxc4 20. Rxc4 d5 21. Rxb4 cxb4 22. Qxb4 Rc4 23. Qd6 d4 24. Nbd2 1-0

[Event "Foxwoods op 15th"]
[Site "Ledyard"]
[Date "2023.04.06"]
[Round "2"]
[White "Jefferson, Matheu"]
[Black "Barry, Shawn"]
[Result "1/2-1/2"]
[ECO "A29"]
[WhiteElo "1923"]
[BlackElo "1404"]
[PlyCount "93"]
[EventDate "2023.04.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. c4 e5 2. g3 Nc6 3. Nc3 Nf6 4. Bg2 Bc5 5. Nf3 d6 6. d3 h6 7. 0-0 0-0 8. a3 a5 9. e3 Re8 10. b3 Bg4 11. Qc2 Qd7 12. Re1 Rad8 13. Bb2 Qf5 14. Nd2 Bh3 15. Bh1 Qd7 16. Rac1 Bf5 17. Nd5 Nxd5 18. cxd5 Ne7 19. Nc4 Bb6 20. Qc3 a4 21. b4 Qb5 22. Qd2 c6 23. e4 Bg6 24. Nxb6 Qxb6 25. dxc6 Nxc6 26. Qe3 Qxe3 27. fxe3 Rc8 28. Bf3 f6 29. Bd1 b5 30. Bg4 Rc7 31. Rc3 Rb8 32. Rec1 Rb6 33. d4 Bxe4 34. Be6+ Kf8 35. d5 Ke7 36. Bg8 Kf8 37. Be6 Ke7 38. g4 Ra6 39. Kf2 Rb6 40. Kg3 g5 41. h4 Ra6 42. hxg5 hxg5 43. Kf2 Rb6 44. Ke2 Ra6 45. Rf1 Raa7 46. Rfc1 Ra6 47. Bg8 1/2-1/2

[Event "Foxwoods op 15th"]
[Site "Ledyard"]
[Date "2023.04.05"]
[Round "1"]
[White "Ouellet, Maili Jade"]
[Black "Jefferson, Matheu"]
[Result "1-0"]
[ECO "E20"]
[WhiteElo "2246"]
[BlackElo "1923"]
[PlyCount "53"]
[EventDate "2023.04.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. f3 c5 5. d5 d6 6. e4 b5 7. Nge2 bxc4 8. Nf4 Bxc3+ 9. bxc3 e5 10. Ne2 Nbd7 11. Ng3 Nb6 12. Be2 0-0 13. 0-0 Qe7 14. Qc2 Bd7 15. Be3 Rab8 16. Rab1 Kh8 17. Qd2 Ng8 18. f4 f5 19. fxe5 Qxe5 20. Bf4 Qe7 21. Bf3 Qf6 22. Nh5 Qg6 23. e5 Rbd8 24. e6 Bc8 25. Bg5 Rde8 26. h4 Bxe6 27. Nf4 1-0

[Event "Nashville Super Nationals V"]
[Site "Nashville"]
[Date "2013.04.06"]
[Round "3"]
[White "Harmon, Leland"]
[Black "Jefferson, Matheu"]
[Result "1-0"]
[ECO "B80"]
[WhiteElo "2340"]
[PlyCount "51"]
[EventDate "2013.04.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "CBM 153 Extra"]
[Source "ChessBase"]
[SourceDate "2013.04.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.04.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. f3 b5 8. g4 b4 9. Nce2 e5 10. Nb3 h6 11. Ng3 Be6 12. Qd2 Nc6 13. 0-0-0 Qc7 14. Nf5 d5 15. exd5 Nxd5 16. Bc5 g6 17. Bxf8 Kxf8 18. Qf2 gxf5 19. gxf5 Nf4 20. Qc5+ Kg7 21. Rg1+ Kf6 22. fxe6 Nxe6 23. Rd6 Rhc8 24. Nd2 Ncd4 25. Ne4+ Ke7 26. Rd7+ 1-0

