[Event "New York State Scholastic-ch"]
[Site "New York"]
[Date "2025.03.16"]
[Round "4"]
[White "Underwood, Toshinori"]
[Black "Swing, Henry"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "2069"]
[BlackElo "1792"]
[PlyCount "114"]
[EventDate "2025.03.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CB12_2025"]
[SourceDate "2025.03.19"]
[SourceVersion "1"]
[SourceVersionDate "2025.03.19"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 g6 5. Nf3 Bf5 6. 0-0 Nf6 7. Re1 Nc6 8. c3 Bxd3 9. Qxd3 Bg7 10. Bf4 0-0 11. Nbd2 Nh5 12. Bg3 Re8 13. Nb3 Nxg3 14. hxg3 Qc7 15. Re2 Rad8 16. Rae1 a5 17. Qb5 b6 18. Nc1 Na7 19. Qb3 Nc8 20. Nd3 e6 21. Nf4 Nd6 22. Qd1 Bh6 23. Ne5 Ne4 24. Nfd3 f6 25. Ng4 Bg7 26. f3 Ng5 27. Nf4 e5 28. Qb3 Qd6 29. dxe5 fxe5 30. Nd3 e4 31. f4 Nf7 32. Ndf2 h5 33. Ne3 Qc5 34. Nc2 Kh7 35. Kh2 Nh6 36. Nh3 Bf6 37. Rd1 Ng4+ 38. Kh1 e3 39. Kg1 Re4 40. Rd3 a4 41. Qa3 Qc4 42. Ne1 Be7 43. b4 b5 44. Qb2 Bf6 45. Qc2 Kh6 46. Nf3 d4 47. Nhg5 Re7 48. Nxd4 Bxd4 49. Nf3 Bb6 50. Rxd8 Bxd8 51. f5 Qe4 52. Qxe4 Rxe4 53. fxg6 Kxg6 54. Nd4 Bf6 55. Nxb5 Rc4 56. a3 Bxc3 57. Nd6 Rd4 0-1

[Event "New York State Scholastic-ch"]
[Site "New York"]
[Date "2025.03.15"]
[Round "3"]
[White "Shin, Luke"]
[Black "Underwood, Toshinori"]
[Result "1/2-1/2"]
[ECO "C00"]
[WhiteElo "1789"]
[BlackElo "2069"]
[PlyCount "77"]
[EventDate "2025.03.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CB12_2025"]
[SourceDate "2025.03.19"]
[SourceVersion "1"]
[SourceVersionDate "2025.03.19"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 e6 3. Bg2 d5 4. 0-0 Be7 5. d3 c5 6. Nbd2 Nc6 7. e4 Qc7 8. Re1 0-0 9. e5 Ng4 10. Qe2 f6 11. exf6 Bxf6 12. c3 Qd6 13. h3 Nge5 14. Nxe5 Qxe5 15. Nf3 Qxe2 16. Rxe2 Re8 17. Bf4 Ne7 18. Rae1 Ng6 19. Be5 Nxe5 20. Nxe5 Rd8 21. h4 Rd6 22. f4 Rb8 23. Nf3 b5 24. g4 g6 25. g5 Bg7 26. Bh3 Rbb6 27. Ne5 Bxe5 28. Rxe5 Kf7 29. Bg4 Ba6 30. b3 c4 31. bxc4 bxc4 32. d4 Bc8 33. h5 Rb2 34. hxg6+ hxg6 35. R1e2 Rxe2 36. Rxe2 Rb6 37. Kf2 Rb1 38. Re1 Rb2+ 39. Re2 1/2-1/2

[Event "World op 51st"]
[Site "Philadelphia"]
[Date "2023.07.04"]
[Round "8"]
[White "Shlyakhtenko, Robert"]
[Black "Underwood, Toshinori"]
[Result "1-0"]
[ECO "E20"]
[WhiteElo "2427"]
[BlackElo "1869"]
[PlyCount "49"]
[EventDate "2023.06.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. f3 d5 7. cxd5 exd5 8. e3 0-0 9. Bd3 Nc6 10. Ne2 Re8 11. 0-0 h6 12. Ra2 Bd7 13. Nf4 Rc8 14. g4 c4 15. Bb1 Na5 16. h4 Nh7 17. Rh2 g6 18. h5 g5 19. Nxd5 Nb3 20. e4 Nxc1 21. Qxc1 f5 22. gxf5 Bxf5 23. Ne3 Be6 24. e5 Rf8 25. Qc2 1-0

[Event "World op 51st"]
[Site "Philadelphia"]
[Date "2023.07.01"]
[Round "2"]
[White "Pang, Qi"]
[Black "Underwood, Toshinori"]
[Result "1-0"]
[ECO "E05"]
[WhiteElo "2187"]
[BlackElo "1869"]
[PlyCount "183"]
[EventDate "2023.06.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 e6 3. d4 d5 4. Bg2 Be7 5. 0-0 0-0 6. c4 dxc4 7. Qc2 a6 8. a4 Bd7 9. Qxc4 Bc6 10. Bg5 Nbd7 11. Nc3 h6 12. Bxf6 Nxf6 13. Rfe1 Bd5 14. Qd3 c5 15. e4 Bc6 16. d5 exd5 17. exd5 Nxd5 18. Nxd5 Bxd5 19. Rxe7 Qxe7 20. Qxd5 Rfd8 21. Qe5 Re8 22. Qxe7 Rxe7 23. Bf1 Rd8 24. Bc4 Kf8 25. Kg2 Re4 26. Rc1 Ke7 27. b3 g5 28. h4 f6 29. hxg5 fxg5 30. Rc2 Kf6 31. Nd2 Red4 32. Nf1 R8d7 33. Ne3 h5 34. Be2 Rd2 35. Rxd2 Rxd2 36. Bxh5 Rb2 37. Bd1 b5 38. axb5 axb5 39. Kf3 Ke5 40. Bc2 Kf6 41. Ke4 Ke6 42. f3 c4 43. bxc4 bxc4 44. Kd4 Rb8 45. Nxc4 Rf8 46. Ke4 Kf6 47. f4 Re8+ 48. Kf3 Rc8 49. Bd3 Rd8 50. Be4 gxf4 51. gxf4 Rb8 52. Ne3 Rb3 53. Bc2 Rb5 54. Ng4+ Ke6 55. Bd3 Ra5 56. Bc4+ Kf5 57. Ne3+ Kf6 58. Ng4+ Kf5 59. Bd3+ Ke6 60. Ne3 Kf6 61. Ke4 Ke6 62. f5+ Kf7 63. Kf4 Kf6 64. Ng4+ Kg7 65. f6+ Kf7 66. Bf5 Ra8 67. Bc2 Rb8 68. Kf5 Rb2 69. Ne5+ Kf8 70. Be4 Rf2+ 71. Ke6 Rxf6+ 72. Kxf6 Kg8 73. Nf7 Kf8 74. Bh7 Ke8 75. Ne5 Kd8 76. Ke6 Kc7 77. Nd7 Kb7 78. Bd3 Kc6 79. Be2 Kc7 80. Bf3 Kd8 81. Kd6 Ke8 82. Bh5+ Kd8 83. Bg6 Kc8 84. Nc5 Kd8 85. Nb7+ Kc8 86. Kc6 Kb8 87. Kb6 Ka8 88. Bf5 Kb8 89. Bd7 Ka8 90. Nc5 Kb8 91. Na6+ Ka8 92. Bc6# 1-0

