[Event "JPN-ch"]
[Site "Tokyo"]
[Date "2024.05.02"]
[Round "2"]
[White "Nanjo, Ryosuke"]
[Black "Yamaguchi, Tosei"]
[Result "1-0"]
[ECO "B15"]
[WhiteElo "2366"]
[BlackElo "1968"]
[PlyCount "93"]
[EventDate "2024.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "JPN"]
[SourceTitle "CB20_2024"]
[SourceDate "2024.05.16"]
[SourceVersion "1"]
[SourceVersionDate "2024.05.16"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 c6 4. h3 d5 5. Nf3 Nh6 6. Bd3 0-0 7. 0-0 f6 8. Qe2 Nf7 9. Be3 e6 10. Rad1 Nd7 11. Rfe1 b5 12. exd5 exd5 13. a4 a6 14. Ra1 Nb6 15. Bf4 Bd7 16. Qe7 Qxe7 17. Rxe7 Rae8 18. Rxe8 Rxe8 19. axb5 axb5 20. Ra7 g5 21. Bg3 g4 22. hxg4 Bxg4 23. Ra6 Nc4 24. Rxc6 b4 25. Nxd5 Nxb2 26. Nxb4 Nxd3 27. Nxd3 Bf5 28. Nf4 Be4 29. Rc7 f5 30. c3 Ra8 31. Nd2 Nh6 32. f3 Ra2 33. Nf1 Rc2 34. Nh5 Bxd4+ 35. cxd4 Rxc7 36. Bxc7 Bb7 37. Ne3 Kf7 38. Bf4 Kg6 39. Ng3 Ng8 40. Ngxf5 Nf6 41. Kf2 Nh5 42. Be5 Nf6 43. Bxf6 Kxf6 44. Kg3 Kg5 45. Nd6 Bc6 46. Ne4+ Kg6 47. Kf4 1-0

[Event "Sapporo Hokkaido-ch"]
[Site "Sapporo"]
[Date "2024.03.24"]
[Round "4"]
[White "Sugimoto, Koichi"]
[Black "Yamaguchi, Tosei"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "1864"]
[BlackElo "1940"]
[PlyCount "80"]
[EventDate "2024.03.23"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "JPN"]
[SourceTitle "CB15_2024"]
[SourceDate "2024.04.10"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.10"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 g6 3. Nc3 d5 4. e3 Bg7 5. Be2 0-0 6. h4 h5 7. f3 c5 8. g4 cxd4 9. exd4 Nc6 10. Qd2 hxg4 11. 0-0-0 Nh5 12. fxg4 Nxf4 13. Qxf4 e5 14. dxe5 Bxe5 15. Qd2 d4 16. Ne4 Qd5 17. Nf2 Qxa2 18. Qg5 Qa1+ 19. Kd2 Qxb2 20. Ke1 Qc3+ 21. Kf1 Qe3 22. Nf3 Qxg5 23. Nxg5 f6 24. Bc4+ Kg7 25. Nf3 Na5 26. Bd5 Rd8 27. Be4 Nc4 28. Ke2 Ne3 29. Rdg1 Be6 30. h5 g5 31. h6+ Kf7 32. Nxe5+ fxe5 33. Rh5 Kf6 34. Rg3 Nd5 35. Nh3 Nf4+ 36. Nxf4 exf4 37. Rg1 Bf7 38. Rh2 Re8 39. Kf3 Bg6 40. Bxg6 Kxg6 0-1

[Event "Sapporo Hokkaido-ch"]
[Site "Sapporo"]
[Date "2024.03.24"]
[Round "5"]
[White "Yamaguchi, Tosei"]
[Black "Hasegawa, Emi"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "1940"]
[BlackElo "1417"]
[PlyCount "65"]
[EventDate "2024.03.23"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "JPN"]
[SourceTitle "CB15_2024"]
[SourceDate "2024.04.10"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. cxd5 exd5 5. Nc3 Be7 6. Bf4 c6 7. Qc2 Nbd7 8. h3 0-0 9. e3 Re8 10. Bd3 a6 11. 0-0 Nf8 12. Rab1 Ng6 13. Bh2 Bd7 14. b4 b6 15. Ne5 c5 16. Nxd7 Qxd7 17. Na4 Qc6 18. bxc5 b5 19. Nb6 Ra7 20. a4 bxa4 21. Qxa4 Qxa4 22. Nxa4 Ne4 23. Rb2 Bf6 24. Rfb1 Raa8 25. Rc2 Bd8 26. c6 Ba5 27. Bxe4 Rxe4 28. Rc5 Bd8 29. c7 Bxc7 30. Rxc7 h5 31. Rbb7 Rf8 32. Nc5 Ree8 33. Bd6 1-0

[Event "Sapporo Hokkaido-ch"]
[Site "Sapporo"]
[Date "2024.03.23"]
[Round "2"]
[White "Aoki, Yasuhiro"]
[Black "Yamaguchi, Tosei"]
[Result "0-1"]
[ECO "A26"]
[WhiteElo "1598"]
[BlackElo "1940"]
[PlyCount "80"]
[EventDate "2024.03.23"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "JPN"]
[SourceTitle "CB15_2024"]
[SourceDate "2024.04.10"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.10"]
[SourceQuality "1"]

1. c4 g6 2. Nf3 Bg7 3. g3 e5 4. Nc3 Nc6 5. Bg2 Nge7 6. 0-0 d6 7. d3 h6 8. e4 Bg4 9. h3 Be6 10. Be3 Qd7 11. Kh2 0-0 12. Nd5 f5 13. Nxe7+ Nxe7 14. exf5 Nxf5 15. Qd2 c6 16. Rac1 c5 17. b3 Rae8 18. g4 Nxe3 19. Qxe3 Rf4 20. Nd2 Ref8 21. Ne4 b6 22. f3 d5 23. Nf2 Qd6 24. Kh1 Qe7 25. Kh2 Qh4 26. Qe2 d4 27. Ne4 h5 28. Qf2 Qe7 29. Qg3 h4 30. Qe1 Bh6 31. Rc2 Bc8 32. Re2 Bb7 33. Ref2 R4f7 34. Re2 Rf4 35. Ref2 R8f7 36. Qe2 Bc6 37. Qe1 Ba8 38. Qe2 Rf8 39. Qe1 R4f7 40. Qe2 Be3 0-1

[Event "Sapporo Hokkaido-ch"]
[Site "Sapporo"]
[Date "2024.03.23"]
[Round "3"]
[White "Yamaguchi, Tosei"]
[Black "Shinoda, Taro"]
[Result "1-0"]
[ECO "A61"]
[WhiteElo "1940"]
[BlackElo "1911"]
[PlyCount "63"]
[EventDate "2024.03.23"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "JPN"]
[SourceTitle "CB15_2024"]
[SourceDate "2024.04.10"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. Nd2 Nbd7 8. e4 Bg7 9. Be2 a6 10. a4 Rb8 11. 0-0 0-0 12. h3 Ne8 13. Qc2 Nc7 14. Nc4 Ne5 15. Na3 f5 16. f4 Nf7 17. Nc4 b5 18. axb5 Nxb5 19. Be3 Nxc3 20. bxc3 fxe4 21. Na5 Bd7 22. Nc6 Bxc6 23. dxc6 Rb6 24. Rxa6 Rxa6 25. Bxa6 Qb6 26. Bb7 Re8 27. Qa4 Kf8 28. f5 g5 29. f6 Bh8 30. Qc4 Nd8 31. Bxg5 Nxb7 32. Bh6+ 1-0

[Event "Sapporo Hokkaido-ch"]
[Site "Sapporo"]
[Date "2024.03.23"]
[Round "1"]
[White "Yamaguchi, Tosei"]
[Black "Takeuchi, Hiroshi"]
[Result "1-0"]
[ECO "E71"]
[WhiteElo "1940"]
[BlackElo "1388"]
[PlyCount "85"]
[EventDate "2024.03.23"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "JPN"]
[SourceTitle "CB15_2024"]
[SourceDate "2024.04.10"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d6 3. Nc3 g6 4. e4 Bg7 5. h3 0-0 6. Be3 e5 7. d5 Nbd7 8. g4 b6 9. Nge2 a5 10. Ng3 Ne8 11. Qd2 Nc5 12. Be2 Bd7 13. h4 f6 14. 0-0-0 a4 15. f3 a3 16. b3 Rb8 17. Rdg1 Ra8 18. Bd1 Rb8 19. Bc2 b5 20. cxb5 Bxb5 21. Nxb5 Rxb5 22. g5 f5 23. Ne2 f4 24. Bf2 Na6 25. Bd3 Qb8 26. Bxb5 Qxb5 27. Nc3 Qb4 28. Na4 Qb7 29. Kb1 c6 30. dxc6 Qxc6 31. Rc1 Qb7 32. Rhd1 Rf7 33. Qd5 Qb8 34. Qc4 Nac7 35. Bb6 Qc8 36. Bxc7 Nxc7 37. Rxd6 Qh3 38. Qd3 Ne6 39. Qd5 Nd4 40. Rd8+ Bf8 41. Qxe5 Nxf3 42. Qd5 Qg2 43. Rd7 1-0

