[Event "Tokyo op"]
[Site "Tokyo"]
[Date "2022.11.03"]
[Round "1"]
[White "Otawa, Yuto"]
[Black "Koyama, Nobuyuki"]
[Result "1-0"]
[ECO "D41"]
[WhiteElo "2179"]
[BlackElo "1718"]
[PlyCount "99"]
[EventDate "2022.11.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "JPN"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 e6 3. g3 Nf6 4. Bg2 Be7 5. 0-0 0-0 6. d4 c5 7. cxd5 Nxd5 8. e4 Nf6 9. Nc3 Nc6 10. d5 exd5 11. exd5 Nb4 12. Ne5 Bd6 13. Nc4 Bg4 14. Qb3 Be7 15. Ne3 Qd7 16. Nxg4 Qxg4 17. a3 c4 18. Qa4 Nd3 19. h3 Qc8 20. Qc2 Bc5 21. Bg5 Nh5 22. Ne4 Bd4 23. Rad1 Be5 24. Be7 Re8 25. d6 Rb8 26. Rxd3 Rxe7 27. Rd5 Re6 28. Ng5 Nf6 29. d7 Qc7 30. Nxe6 fxe6 31. d8Q+ Rxd8 32. Rxd8+ Qxd8 33. Qxc4 Qd7 34. Re1 Qd6 35. Qc8+ Kf7 36. Qxb7+ Kg6 37. Qb5 Bd4 38. Qd3+ Kf7 39. Rd1 e5 40. b4 Qb6 41. Rd2 Ke7 42. Qc4 Qd8 43. Rc2 Nd7 44. Qd5 Qf8 45. Qf3 Qb8 46. Qf5 g6 47. Qg5+ Kf7 48. Bd5+ Ke8 49. Rc6 Nf8 50. Qf6 1-0

[Event "JPN-ch"]
[Site "Tokyo"]
[Date "2022.08.20"]
[Round "2"]
[White "Higashishiba, Teruomi"]
[Black "Koyama, Nobuyuki"]
[Result "1-0"]
[ECO "C83"]
[WhiteElo "1972"]
[BlackElo "1718"]
[PlyCount "71"]
[EventDate "2022.08.20"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "JPN"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Be7 10. Nbd2 Qd7 11. Qe2 Nc5 12. Nd4 Nxd4 13. cxd4 Nb7 14. Bc2 c5 15. Nb3 Rc8 16. Be3 c4 17. Nd2 Na5 18. Nf3 h6 19. h3 Nc6 20. a3 Na5 21. Rac1 c3 22. b4 Nc4 23. Ra1 Bf5 24. Rfb1 Nxe3 25. fxe3 0-0 26. Ne1 Bg5 27. Bd3 Rc6 28. Rc1 Rfc8 29. Rc2 Bh4 30. Bxf5 Qxf5 31. Nd3 Rg6 32. Rf1 Qd7 33. Nf4 Rg3 34. Kh2 Rg5 35. g4 Qd8 36. Qf3 1-0

[Event "Tokyo Japan op"]
[Site "Tokyo"]
[Date "2021.11.20"]
[Round "2"]
[White "Otawa, Yuto"]
[Black "Koyama, Nobuyuki"]
[Result "1-0"]
[ECO "D36"]
[WhiteElo "2128"]
[BlackElo "1762"]
[PlyCount "81"]
[EventDate "2021.11.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "JPN"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Be7 6. Qc2 0-0 7. e3 c6 8. Bd3 Nbd7 9. Nge2 Re8 10. 0-0 h6 11. Bh4 Nf8 12. f3 Be6 13. Rae1 Rc8 14. Kh1 c5 15. dxc5 Bxc5 16. Nd4 g5 17. Bf2 a6 18. Qd2 Bd6 19. Nce2 Nh5 20. g4 Nf6 21. Ng3 N8d7 22. Rc1 Bf8 23. Ngf5 Ne5 24. Bg3 Nfd7 25. Be2 Qf6 26. b3 Kh7 27. f4 Ng6 28. Rxc8 Rxc8 29. fxg5 Qxg5 30. h4 Qd8 31. Bd3 Kg8 32. Nxe6 fxe6 33. Nxh6+ Bxh6 34. Bxg6 Nf8 35. Bf7+ Kh8 36. Be5+ Bg7 37. Bxg7+ Kxg7 38. Qd4+ Kh7 39. g5 Qe7 40. Qg4 Kh8 41. Qh5+ 1-0

