[Event "Chiang Mai op"]
[Site "Chiangmai"]
[Date "2019.03.27"]
[Round "1"]
[White "Nattavutthisit, Kavin"]
[Black "Upachan, Songkasem"]
[Result "1-0"]
[ECO "A49"]
[WhiteElo "1776"]
[BlackElo "1366"]
[PlyCount "119"]
[EventDate "2019.03.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "THA"]
[SourceTitle "CBM 190 Extra"]
[Source "ChessBase"]
[SourceDate "2019.07.15"]
[SourceVersion "1"]
[SourceVersionDate "2019.07.15"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 0-0 5. 0-0 d6 6. Re1 c6 7. e4 Nbd7 8. c3 Qc7 9. Na3 Re8 10. e5 dxe5 11. dxe5 Nd5 12. Qe2 Nf8 13. Nc2 Bg4 14. h3 Bxf3 15. Bxf3 e6 16. Na3 Nd7 17. Nc4 Red8 18. Bg5 Rf8 19. a4 h6 20. Bf4 N7b6 21. Nd6 Rad8 22. Bd2 Nd7 23. Nc4 N7b6 24. Ne3 Qxe5 25. Nxd5 Qxe2 26. Ne7+ Kh8 27. Rxe2 Rfe8 28. Nxc6 bxc6 29. Bxc6 Rf8 30. Be3 Rc8 31. Bb5 Rfd8 32. a5 Nc4 33. Bxc4 Rxc4 34. Bxa7 Ra8 35. Be3 Rc6 36. Ree1 Bf6 37. Bb6 h5 38. Red1 Kg8 39. Kg2 Kf8 40. Rac1 Ke8 41. Rc2 Rac8 42. Rcd2 Ra8 43. Rd7 Be7 44. Rb7 g5 45. Rdd7 Bf8 46. Rdc7 Rxc7 47. Rxc7 Be7 48. b4 Bd8 49. Ra7 Rxa7 50. Bxa7 Kd7 51. c4 Be7 52. b5 f5 53. g4 hxg4 54. hxg4 fxg4 55. f3 Kc7 56. a6 Bb4 57. c5 Kc8 58. b6 Bxc5 59. b7+ Kc7 60. b8Q+ 1-0

[Event "World School-ch U09 11th"]
[Site "Pattaya"]
[Date "2015.05.13"]
[Round "8"]
[White "Liu, Kangrui"]
[Black "Upachan, Songkasem"]
[Result "1-0"]
[ECO "E81"]
[WhiteElo "1508"]
[PlyCount "101"]
[EventDate "2015.05.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "THA"]
[SourceTitle "CBM 166 Extra"]
[Source "ChessBase"]
[SourceDate "2015.06.18"]
[SourceVersion "1"]
[SourceVersionDate "2015.06.18"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 c6 7. Bd3 Qc7 8. Rc1 Bd7 9. Nge2 b5 10. cxb5 cxb5 11. Nd5 Qa5+ 12. Bd2 Qxa2 13. Nc7 Qxb2 14. Nxa8 Nc6 15. Nc7 Nb4 16. Bc3 Nxd3+ 17. Qxd3 Qb3 18. Rb1 Qa4 19. Ra1 Qb3 20. Nc1 Qc4 21. Qxc4 bxc4 22. e5 dxe5 23. dxe5 Nh5 24. Rxa7 Nf4 25. 0-0 h6 26. Rd1 Bc6 27. Ra6 Be8 28. Rd8 g5 29. Rxe8 Rxe8 30. Nxe8 Ne6 31. Ra8 Kh7 32. Nxg7 Kxg7 33. Rc8 Kg6 34. Rxc4 h5 35. Bd2 Kg7 36. f4 Kg6 37. fxg5 Nxg5 38. Bxg5 Kxg5 39. Rc7 Kg6 40. Rxe7 Kg7 41. e6 Kf6 42. Rxf7+ Kxe6 43. Rf1 Ke5 44. h3 Ke6 45. g4 hxg4 46. hxg4 Ke7 47. g5 Ke8 48. g6 Kd8 49. g7 Kc8 50. Rf7 Kd8 51. g8Q# 1-0

[Event "World School-ch U09 11th"]
[Site "Pattaya"]
[Date "2015.05.08"]
[Round "3"]
[White "Upachan, Songkasem"]
[Black "Nikhil, Magizhnan"]
[Result "0-1"]
[ECO "D80"]
[BlackElo "1618"]
[PlyCount "58"]
[EventDate "2015.05.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "THA"]
[SourceTitle "CBM 166 Extra"]
[Source "ChessBase"]
[SourceDate "2015.06.18"]
[SourceVersion "1"]
[SourceVersionDate "2015.06.18"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Bg5 Ne4 5. Nf3 Nxc3 6. bxc3 Bg7 7. e3 c6 8. cxd5 cxd5 9. Bb5+ Bd7 10. Qa4 Nc6 11. 0-0 a6 12. Bxc6 Bxc6 13. Qb4 h5 14. h3 Qd7 15. Rfc1 f6 16. Bf4 g5 17. Bh2 g4 18. Nd2 gxh3 19. g3 h4 20. Kf1 hxg3 21. fxg3 Qg4 22. Re1 Bh6 23. Qb3 Bb5+ 24. Kf2 Qf5+ 25. Kg1 Qd3 26. Rad1 Bxe3+ 27. Kh1 Bxd2 28. Qb4 Qf3+ 29. Kg1 Qg2# 0-1

