[Event "JPN-ch"]
[Site "Tokyo"]
[Date "2024.05.06"]
[Round "9"]
[White "Nanjo, Ryosuke"]
[Black "Matsuyama, Koya"]
[Result "1-0"]
[ECO "C95"]
[WhiteElo "2366"]
[BlackElo "1995"]
[PlyCount "127"]
[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 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 0-0 9. h3 Nb8 10. d4 Nbd7 11. Nbd2 Bb7 12. Bc2 Re8 13. Nf1 Bf8 14. Ng3 g6 15. b3 c5 16. d5 Qc7 17. c4 Reb8 18. Bg5 Bg7 19. Qd2 Bc8 20. Bd3 bxc4 21. bxc4 a5 22. Bh6 Bxh6 23. Qxh6 Qd8 24. Nh4 Qf8 25. Qg5 Kh8 26. Nf3 a4 27. Nd2 Rb2 28. Nb1 Ba6 29. Na3 Rab8 30. Qc1 R2b4 31. Rf1 Ng8 32. Qc3 Qe7 33. Nc2 R4b6 34. Ne3 Bc8 35. Bc2 Ra6 36. Ne2 Ngf6 37. Rab1 Rba8 38. g4 Kg8 39. Ng3 Nf8 40. Kg2 h5 41. gxh5 Nxh5 42. Nxh5 gxh5 43. Kh2 Ng6 44. Rg1 Qh4 45. Ng2 Qg5 46. Rbf1 Kf8 47. f4 exf4 48. Nxf4 Qe5 49. Qg3 Ke7 50. Nxg6+ fxg6 51. Qxe5+ dxe5 52. Rg5 Rf6 53. Rxe5+ Kf7 54. Rxf6+ Kxf6 55. Re8 Rb8 56. e5+ Kg5 57. d6 Rb2 58. Rxc8 Rxc2+ 59. Kg3 Rc3+ 60. Kf2 Kf4 61. d7 Rc2+ 62. Ke1 Ke3 63. d8Q Rc1+ 64. Qd1 1-0

[Event "Kobe op"]
[Site "Kobe"]
[Date "2023.07.17"]
[Round "7"]
[White "Averbukh, Alex"]
[Black "Matsuyama, Koya"]
[Result "1/2-1/2"]
[ECO "C68"]
[WhiteElo "2166"]
[BlackElo "1850"]
[PlyCount "92"]
[EventDate "2023.07.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "JPN"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. d4 Bg4 6. dxe5 Qxd1+ 7. Kxd1 0-0-0+ 8. Ke2 Re8 9. Bf4 f6 10. exf6 Rxe4+ 11. Be3 Nxf6 12. Nbd2 Bxf3+ 13. Kxf3 Re8 14. Rhe1 Be7 15. g3 Rhf8 16. Kg2 Ng4 17. f3 Nxe3+ 18. Rxe3 Bf6 19. Ne4 Bxb2 20. Rae1 Rd8 21. c3 Ba3 22. h4 b5 23. Kh3 h6 24. h5 Bd6 25. f4 c5 26. Kg4 a5 27. Rb1 c6 28. c4 b4 29. Nxd6+ Rxd6 30. Re5 Rd2 31. a4 Ra2 32. Rxc5 Rxa4 33. Rxc6+ Kb7 34. Rg6 Rf7 35. c5 Ra3 36. Re1 Rc3 37. Re5 Rc7 38. Rb6+ Ka7 39. Rb5 Ka6 40. Rb6+ Ka7 41. Rb5 Ka6 42. Rb6+ Ka7 43. Rb5 Ra3 44. Re6 b3 45. Reb6 a4 46. Rxb3 axb3 1/2-1/2

[Event "Kobe op"]
[Site "Kobe"]
[Date "2023.07.15"]
[Round "2"]
[White "Aoshima, Mirai"]
[Black "Matsuyama, Koya"]
[Result "1-0"]
[ECO "D43"]
[WhiteElo "2344"]
[BlackElo "1850"]
[PlyCount "61"]
[EventDate "2023.07.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "JPN"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Nc3 e6 5. Qb3 Bd6 6. Bg5 Nbd7 7. e4 dxe4 8. Nxe4 Be7 9. Bd3 Nxe4 10. Bxe7 Qxe7 11. Bxe4 f5 12. Bc2 e5 13. Nxe5 Nxe5 14. 0-0 0-0 15. Rae1 f4 16. Rxe5 Qd8 17. c5+ Kh8 18. Rh5 g6 19. Bxg6 Kg7 20. Bc2 Rh8 21. Qd3 Be6 22. Re1 Qf6 23. Rxh7+ Rxh7 24. Qxh7+ Kf8 25. Qxb7 Re8 26. Qxc6 Qf7 27. d5 Bd7 28. Qh6+ Kg8 29. Rxe8+ Bxe8 30. d6 f3 31. Bb3 1-0

[Event "Tokyo City-ch"]
[Site "Tokyo"]
[Date "2019.03.24"]
[Round "5"]
[White "Matsuyama, Koya"]
[Black "Scott, Tyler"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1785"]
[BlackElo "2195"]
[PlyCount "119"]
[EventDate "2019.03.23"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "JPN"]
[SourceTitle "CBM 190 Extra"]
[Source "ChessBase"]
[SourceDate "2019.07.15"]
[SourceVersion "1"]
[SourceVersionDate "2019.07.15"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Nf3 Nc6 6. cxd4 d6 7. Bc4 dxe5 8. dxe5 Nb6 9. Qxd8+ Nxd8 10. Bb3 Bg4 11. Nd4 Rc8 12. 0-0 e6 13. Be3 Bc5 14. Nb5 a6 15. Bxc5 Rxc5 16. Nd6+ Ke7 17. f4 Nc8 18. Nc3 Nxd6 19. exd6+ Kd7 20. h3 Bf5 21. Rfd1 h5 22. Rd2 h4 23. a4 Nc6 24. Bd1 Rc4 25. a5 Rxf4 26. Bf3 Rb8 27. Na4 Nd4 28. Nb6+ Kd8 29. Rc1 e5 30. Bg4 Bxg4 31. hxg4 Nc6 32. Rf2 Rxf2 33. Kxf2 Ke8 34. g3 hxg3+ 35. Kxg3 Rd8 36. Rh1 Rxd6 37. Rh8+ Ke7 38. Nc8+ Kd7 39. Nxd6 Kxd6 40. Rh7 Nxa5 41. Rxg7 Ke6 42. Rg8 Nc6 43. Kf3 Kd5 44. Ke3 Kc4 45. Rf8 b5 46. Rxf7 a5 47. Rc7 Kd5 48. g5 Nd4 49. Rd7+ Ke6 50. Rxd4 exd4+ 51. Kxd4 Kf5 52. Kc5 Kxg5 53. Kxb5 Kf6 54. Kxa5 Ke5 55. Ka6 Kd6 56. b4 Kc7 57. b5 Kb8 58. Kb6 Ka8 59. Kc7 Ka7 60. b6+ 1-0

[Event "Tokyo City-ch"]
[Site "Tokyo"]
[Date "2019.03.24"]
[Round "6"]
[White "Sakai, Azumi"]
[Black "Matsuyama, Koya"]
[Result "0-1"]
[ECO "A06"]
[WhiteElo "1845"]
[BlackElo "1785"]
[PlyCount "58"]
[EventDate "2019.03.23"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "JPN"]
[SourceTitle "CBM 190 Extra"]
[Source "ChessBase"]
[SourceDate "2019.07.15"]
[SourceVersion "1"]
[SourceVersionDate "2019.07.15"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 e6 5. b3 Nbd7 6. Bb2 Bd6 7. Bd3 0-0 8. 0-0 b6 9. Ne5 Bb7 10. f4 Ne4 11. Nc3 f5 12. Rc1 Ndf6 13. cxd5 exd5 14. Nxe4 fxe4 15. Be2 Rc8 16. Bg4 Nxg4 17. Qxg4 Rc7 18. f5 Qe7 19. Rf2 c5 20. Qg3 cxd4 21. Rxc7 Bxc7 22. Bxd4 Bc8 23. Nc6 Bxg3 24. Nxe7+ Kf7 25. Rc2 Bxh2+ 26. Kxh2 Kxe7 27. Rc7+ Kd6 28. Rxa7 Kc6 29. Rxg7 Bxf5 0-1

[Event "Tokyo City-ch"]
[Site "Tokyo"]
[Date "2019.03.23"]
[Round "2"]
[White "Asaka, Samuel"]
[Black "Matsuyama, Koya"]
[Result "1/2-1/2"]
[ECO "D10"]
[WhiteElo "2164"]
[BlackElo "1785"]
[PlyCount "88"]
[EventDate "2019.03.23"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "JPN"]
[SourceTitle "CBM 190 Extra"]
[Source "ChessBase"]
[SourceDate "2019.07.15"]
[SourceVersion "1"]
[SourceVersionDate "2019.07.15"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Bf4 Nf6 5. Nc3 e6 6. e3 Bd6 7. Bxd6 Qxd6 8. f4 0-0 9. Bd3 Nc6 10. Nf3 b6 11. 0-0 Bb7 12. Rc1 Nb4 13. Bb1 Ba6 14. Re1 Rac8 15. Ne5 Nd7 16. Qa4 Nxe5 17. fxe5 Qe7 18. a3 Nd3 19. Qxa6 Nxc1 20. Rxc1 Rc7 21. Qd3 Qh4 22. Rf1 f6 23. g3 Qh6 24. Rf4 g5 25. Rxf6 Rxf6 26. exf6 Qxf6 27. Qf1 Qh6 28. Nd1 Qh5 29. Nf2 Qf3 30. Qe1 h5 31. Nd3 h4 32. Ne5 Qf6 33. Bd3 hxg3 34. Qxg3 Rc1+ 35. Kg2 Rd1 36. h4 Rd2+ 37. Kh3 Rxd3 38. Nxd3 Qf5+ 39. Qg4 Qf1+ 40. Kg3 Qg1+ 41. Kf3 Qd1+ 42. Kg3 Qg1+ 43. Kh3 Qh1+ 44. Kg3 Qg1+ 1/2-1/2

[Event "Tokyo op"]
[Site "Tokyo"]
[Date "2018.10.08"]
[Round "5"]
[White "Matsuyama, Koya"]
[Black "Sakai, Enju"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "1624"]
[BlackElo "1938"]
[PlyCount "73"]
[EventDate "2018.10.06"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "JPN"]
[SourceTitle "CBM 187 Extra"]
[Source "ChessBase"]
[SourceDate "2018.11.04"]
[SourceVersion "1"]
[SourceVersionDate "2018.11.04"]
[SourceQuality "1"]

1. e4 c5 2. c3 d6 3. d4 Nf6 4. dxc5 Nc6 5. cxd6 Nxe4 6. Nf3 Nxd6 7. Be2 g6 8. Bf4 Bg7 9. Bxd6 exd6 10. 0-0 0-0 11. Nbd2 d5 12. Nb3 Be6 13. Qd2 Qe7 14. Nfd4 Rad8 15. Rfe1 Rfe8 16. Bf3 Qd6 17. Rad1 Qb8 18. Qg5 h6 19. Qc1 Nxd4 20. Nxd4 Qd6 21. c4 Qb6 22. Nxe6 fxe6 23. cxd5 exd5 24. Rxe8+ Rxe8 25. Bxd5+ Kh7 26. Bb3 Re2 27. Qf4 Qd4 28. Qxd4 Bxd4 29. g3 Bxf2+ 30. Kg2 Rxb2 31. Rd7+ Kh8 32. Rxb7 h5 33. Kf3 Bb6 34. Kf4 Rxh2 35. Kg5 Rg2 36. Kxg6 Rxg3+ 37. Kxh5 1/2-1/2

[Event "Tokyo op"]
[Site "Tokyo"]
[Date "2018.10.07"]
[Round "3"]
[White "Matsuyama, Koya"]
[Black "Voronin, Andrey"]
[Result "1/2-1/2"]
[ECO "C42"]
[WhiteElo "1624"]
[BlackElo "1871"]
[PlyCount "88"]
[EventDate "2018.10.06"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "JPN"]
[SourceTitle "CBM 187 Extra"]
[Source "ChessBase"]
[SourceDate "2018.11.04"]
[SourceVersion "1"]
[SourceVersionDate "2018.11.04"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. 0-0 Nc6 8. Re1 Bg4 9. Bxe4 dxe4 10. Rxe4 Bxf3 11. Qxf3 Nxd4 12. Qd3 c5 13. Be3 f5 14. Re5 g6 15. Bxd4 Qxd4 16. Qe2 0-0-0 17. Nc3 Bd6 18. Re6 Qb4 19. Nb5 Qxb2 20. Re1 Bb8 21. Re7 Qxa2 22. Rg7 Qd5 23. c4 Qe4 24. Qf1 Qd3 25. Ree7 Qxf1+ 26. Kxf1 Rhe8 27. Nxa7+ Bxa7 28. Rc7+ Kb8 29. Rxb7+ Ka8 30. Rxa7+ Kb8 31. g3 Rd1+ 32. Kg2 Rb1 33. Rxh7 Rb2 34. Rag7 Rb4 35. Rxg6 Rxc4 36. Rb6+ Ka8 37. Rc7 Rc2 38. Rf6 Kb8 39. Rg7 c4 40. Rxf5 c3 41. Rb5+ Ka8 42. Rc5 Rf8 43. Ra5+ Kb8 44. Rb5+ Ka8 1/2-1/2

[Event "Tokyo op"]
[Site "Tokyo"]
[Date "2018.10.06"]
[Round "1"]
[White "Matsuyama, Koya"]
[Black "Averbukh, Alex"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "1624"]
[BlackElo "2356"]
[PlyCount "100"]
[EventDate "2018.10.06"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "JPN"]
[SourceTitle "CBM 187 Extra"]
[Source "ChessBase"]
[SourceDate "2018.11.04"]
[SourceVersion "1"]
[SourceVersionDate "2018.11.04"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. c3 d6 6. Bb3 a6 7. 0-0 0-0 8. Nbd2 b5 9. h3 Bb6 10. Re1 Na5 11. Bc2 c5 12. Nf1 Re8 13. Ng3 d5 14. Bg5 Qd6 15. Bxf6 gxf6 16. Nh4 d4 17. Nhf5 Qf8 18. b4 cxb4 19. cxb4 Nb7 20. Nh5 Bd8 21. Nhg7 Bxf5 22. Nxe8 Be6 23. Nxf6+ Bxf6 24. Bb3 Bxb3 25. Qxb3 Nd8 26. Rac1 Ne6 27. Rc6 Qg7 28. Qd1 Be7 29. a3 a5 30. bxa5 Rxa5 31. Rc8+ Bf8 32. g3 Rxa3 33. Qc2 h6 34. Rb1 Rc3 35. Rxc3 dxc3 36. Qxc3 Nd4 37. Qc8 Qf6 38. Ra1 Qf3 39. Qg4+ Qxg4 40. hxg4 b4 41. Kf1 b3 42. Rb1 Bb4 43. f4 f6 44. Kf2 Bc3 45. Ke3 b2 46. fxe5 fxe5 47. Kf2 Nc2 48. Ke2 Na3 49. Kd1 Nxb1 50. Kc2 Na3+ 0-1

[Event "Eastern Asia-ch U16 3rd"]
[Site "Shanghai"]
[Date "2018.08.06"]
[Round "7"]
[White "Pheephacharakan, Pinatpong"]
[Black "Matsuyama, Koya"]
[Result "1-0"]
[ECO "A28"]
[WhiteElo "1834"]
[BlackElo "1778"]
[PlyCount "75"]
[EventDate "2018.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CHN"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e4 Bc5 5. Nxe5 Bxf2+ 6. Kxf2 Nxe5 7. d4 Neg4+ 8. Kg1 d6 9. h3 Nh6 10. Bg5 c6 11. c5 Qa5 12. Bxf6 gxf6 13. Qh5 Ng8 14. Bc4 Qc7 15. cxd6 Qxd6 16. Qxf7+ Kd8 17. Qg7 Qxd4+ 18. Kh2 Qxc4 19. Rad1+ Ke8 20. Qxh8 Qf7 21. e5 f5 22. e6 Bxe6 23. Qe5 Kf8 24. g4 Re8 25. Rhf1 Bc8 26. Qc5+ Ne7 27. gxf5 Bxf5 28. Rf3 b6 29. Qf2 Qe6 30. Rf1 Kg7 31. Rxf5 Nxf5 32. Qxf5 Qd6+ 33. Qf4 Qe7 34. Qd4+ Kg6 35. Rg1+ Kh5 36. Qg4+ Kh6 37. Qf4+ Kh5 38. Ne4 1-0

[Event "Eastern Asia-ch U16 3rd"]
[Site "Shanghai"]
[Date "2018.08.05"]
[Round "5"]
[White "Daniel Hermawan, Lumban Tobing"]
[Black "Matsuyama, Koya"]
[Result "1-0"]
[ECO "C95"]
[WhiteElo "2074"]
[BlackElo "1778"]
[PlyCount "117"]
[EventDate "2018.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CHN"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 0-0 9. h3 Nb8 10. d4 Nbd7 11. Nbd2 Bb7 12. Bc2 Re8 13. Nf1 Bf8 14. Ng3 g6 15. a4 Bg7 16. Qd3 c6 17. Bb3 Qc7 18. Ng5 d5 19. axb5 axb5 20. Rxa8 Rxa8 21. exd5 cxd5 22. dxe5 Nxe5 23. Qe2 Re8 24. Bf4 Nf3+ 25. Nxf3 Qxf4 26. Qxb5 Rxe1+ 27. Nxe1 Ne4 28. Nd3 Qc7 29. Nxe4 dxe4 30. Qe8+ Bf8 31. Ne5 Qe7 32. Qxf7+ Qxf7 33. Nxf7 Kg7 34. Nd8 Bc8 35. Bd5 Bf5 36. g4 Bd7 37. Bxe4 Kf6 38. f4 Bc5+ 39. Kg2 Ke7 40. Nb7 Bb6 41. b4 Be3 42. c4 Bxf4 43. Nc5 Bc8 44. Kf3 Bd2 45. Nd3 Be6 46. Bd5 Bd7 47. b5 Ba5 48. Ne5 Be8 49. Ke4 Kd6 50. g5 Bc3 51. b6 Bxe5 52. b7 Kc7 53. Kxe5 Bd7 54. h4 Bf5 55. Kf6 Kb8 56. Kg7 Kc7 57. Kxh7 Kb8 58. Kh6 Kc7 59. h5 1-0

[Event "Eastern Asia-ch U16 3rd"]
[Site "Shanghai"]
[Date "2018.08.04"]
[Round "4"]
[White "Cheng, Chen Li Andrew"]
[Black "Matsuyama, Koya"]
[Result "0-1"]
[ECO "D52"]
[WhiteElo "1424"]
[BlackElo "1778"]
[PlyCount "112"]
[EventDate "2018.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CHN"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 Nbd7 6. e3 Qa5 7. Bxf6 Nxf6 8. Qc2 Bb4 9. Nd2 0-0 10. a3 Bxc3 11. bxc3 Qc7 12. cxd5 exd5 13. Bd3 Re8 14. 0-0 b6 15. a4 Bb7 16. c4 c5 17. cxd5 Bxd5 18. dxc5 bxc5 19. Rfc1 Ng4 20. Bxh7+ Kh8 21. g3 Qe5 22. Qf5 Nxf2 23. e4 Qxf5 24. Bxf5 Nxe4 25. Bxe4 Bxe4 26. Nxe4 Rxe4 27. Rxc5 Re2 28. Rc7 Rd8 29. Rxa7 f6 30. a5 Rdd2 31. a6 Rg2+ 32. Kh1 Rxh2+ 33. Kg1 Rdg2+ 34. Kf1 Rxg3 35. Ra8+ Kh7 36. a7 Rh1+ 37. Kf2 Rxa1 38. Kxg3 Kg6 39. Kg4 Ra4+ 40. Kg3 Kf5 41. Kf3 Ra3+ 42. Kg2 Kf4 43. Kf2 f5 44. Ke1 Kg4 45. Kf2 f4 46. Kf1 Ra2 47. Rb8 Rxa7 48. Rb1 Ra2 49. Kg1 g5 50. Kf1 Kg3 51. Rb3+ f3 52. Rb1 Rh2 53. Kg1 f2+ 54. Kf1 Rh1+ 55. Ke2 Rxb1 56. Kd2 f1Q 0-1

[Event "Eastern Asia-ch U16 3rd"]
[Site "Shanghai"]
[Date "2018.08.04"]
[Round "3"]
[White "Matsuyama, Koya"]
[Black "Liu, Yu Ping"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "1778"]
[BlackElo "1490"]
[PlyCount "56"]
[EventDate "2018.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CHN"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. h3 h6 7. 0-0 0-0 8. Re1 Re8 9. Bb3 Bb6 10. Nbd2 Be6 11. Bxe6 Rxe6 12. Nh4 d5 13. Nf5 Qd7 14. Qf3 dxe4 15. Nxe4 Nxe4 16. dxe4 Rd8 17. h4 Qd3 18. Be3 Bxe3 19. Rxe3 Qd7 20. h5 Kh7 21. Qg4 g5 22. Ree1 Ne7 23. Rad1 Qe8 24. Rxd8 Qxd8 25. Rd1 Qe8 26. Nxe7 Qxe7 27. Qf5+ Kg7 28. Qf3 Rd6 1/2-1/2

[Event "Eastern Asia-ch U16 3rd"]
[Site "Shanghai"]
[Date "2018.08.03"]
[Round "2"]
[White "Buana, Daru Okta"]
[Black "Matsuyama, Koya"]
[Result "1/2-1/2"]
[ECO "E03"]
[WhiteElo "2020"]
[BlackElo "1778"]
[PlyCount "42"]
[EventDate "2018.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CHN"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 e6 3. g3 Nf6 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4 a6 7. Qc2 Rb8 8. 0-0 c5 9. d4 b5 10. a4 Bb7 11. axb5 axb5 12. dxc5 Bxc5 13. Ne1 0-0 14. Nd3 Bxg2 15. Kxg2 Qb6 16. Nxc5 Nxc5 17. Be3 Rbc8 18. Nd2 Qb7+ 19. Nf3 Nce4 20. Qb3 Ng4 21. Rfd1 Nc5 1/2-1/2

[Event "JPN-ch"]
[Site "Tokyo"]
[Date "2018.05.05"]
[Round "11"]
[White "Kitamura, Masashi"]
[Black "Matsuyama, Koya"]
[Result "1/2-1/2"]
[ECO "C84"]
[WhiteElo "1701"]
[BlackElo "1502"]
[PlyCount "110"]
[EventDate "2018.04.29"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "JPN"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. d3 b5 7. Bb3 d6 8. a4 Bb7 9. axb5 axb5 10. Rxa8 Qxa8 11. Na3 b4 12. Nc4 0-0 13. Ne3 Na5 14. Nf5 Re8 15. Ba4 Bc6 16. Nxe7+ Rxe7 17. Bxc6 Nxc6 18. Nh4 Nd4 19. c3 bxc3 20. bxc3 Nb5 21. Nf5 Re6 22. c4 Nd4 23. Nxd4 exd4 24. Bb2 c5 25. Qb3 Re7 26. Ra1 Ra7 27. Rxa7 Qxa7 28. h3 h6 29. Kh2 Nd7 30. Bc1 Ne5 31. f4 Nc6 32. Bd2 Qa6 33. Kg3 Kf8 34. Kf3 Ke7 35. g4 Qc8 36. Qb6 h5 37. e5 hxg4+ 38. hxg4 Qd7 39. exd6+ Qxd6 40. Qb7+ Ke8 41. Qc8+ Ke7 42. Qf5 g6 43. Qg5+ Ke8 44. Qd5 Qxd5+ 45. cxd5 Nb4 46. Ke4 f5+ 47. gxf5 gxf5+ 48. Kxf5 Nxd5 49. Ke4 Nb6 50. f5 Kf7 51. Bf4 c4 52. dxc4 Nxc4 53. Kxd4 Nb6 54. Ke5 Nd7+ 55. Kd6 Kf6 1/2-1/2

[Event "JPN-ch"]
[Site "Tokyo"]
[Date "2018.05.04"]
[Round "10"]
[White "Matsuyama, Koya"]
[Black "Aoki, Yasuhiro"]
[Result "1-0"]
[ECO "B09"]
[WhiteElo "1502"]
[BlackElo "1813"]
[PlyCount "35"]
[EventDate "2018.04.29"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "JPN"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 0-0 6. h3 Nc6 7. Be3 e5 8. Qd2 exd4 9. Nxd4 Nxd4 10. Bxd4 Re8 11. Bd3 Bf5 12. 0-0-0 Nxe4 13. Bxe4 Bxe4 14. Bxg7 Bxg2 15. Qxg2 Kxg7 16. Qxb7 Rb8 17. Qxa7 Qf6 18. Qd4 1-0

[Event "JPN-ch"]
[Site "Tokyo"]
[Date "2018.05.04"]
[Round "9"]
[White "Suzuki, Masateru"]
[Black "Matsuyama, Koya"]
[Result "1-0"]
[ECO "C95"]
[WhiteElo "1986"]
[BlackElo "1502"]
[PlyCount "139"]
[EventDate "2018.04.29"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "JPN"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 0-0 9. h3 Nb8 10. d4 Nbd7 11. Nbd2 Bb7 12. Bc2 Re8 13. Nf1 Bf8 14. Ng3 g6 15. Bg5 h6 16. Bd2 Bg7 17. Qc1 Kh7 18. a4 c5 19. Bb3 Qe7 20. Bc2 cxd4 21. cxd4 exd4 22. Nxd4 bxa4 23. Ndf5 Qf8 24. Nxg7 Qxg7 25. Rxa4 Nc5 26. Rc4 Rac8 27. Bc3 d5 28. exd5 Rxe1+ 29. Qxe1 Bxd5 30. Rf4 Ncd7 31. Bd3 Rc6 32. Qe7 Re6 33. Qb4 Ne5 34. Bc2 Qh8 35. Qa5 Qb8 36. Rxf6 Rxf6 37. Qxd5 Re6 38. Nf1 Nc6 39. Ne3 Qf4 40. Bb3 Ne5 41. Bxe5 Qxe5 42. Qxe5 Rxe5 43. Bxf7 Kg7 44. Bc4 a5 45. Kf1 h5 46. Ke2 Kf6 47. Kd3 Ke7 48. Kd4 Kd6 49. Bd3 Re6 50. Nc4+ Kc7 51. Nxa5 Rf6 52. Ke3 Rb6 53. Nc4 Re6+ 54. Be4 g5 55. b4 g4 56. hxg4 hxg4 57. b5 Re8 58. b6+ Kd7 59. Kf4 Rg8 60. Kg3 Re8 61. Kf4 Rf8+ 62. Ke3 Re8 63. b7 Kc7 64. Nd2 Rf8 65. Nb3 Re8 66. Nc5 Kb6 67. b8Q+ Rxb8 68. Nd7+ Kc7 69. Nxb8 Kxb8 70. Kf4 1-0

[Event "JPN-ch"]
[Site "Tokyo"]
[Date "2018.05.02"]
[Round "8"]
[White "Matsuyama, Koya"]
[Black "Asaka, Samuel"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "1502"]
[BlackElo "2070"]
[PlyCount "94"]
[EventDate "2018.04.29"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "JPN"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nc6 5. Nf3 Bf5 6. Be2 cxd4 7. cxd4 Bxb1 8. Rxb1 e6 9. b3 Bb4+ 10. Bd2 Bd6 11. Bc3 Nf6 12. 0-0 0-0 13. Bc4 Qh5 14. Re1 Rfd8 15. Ne5 Qxd1 16. Rbxd1 Nb4 17. Bxb4 Bxb4 18. Re3 Nd5 19. Bxd5 Rxd5 20. Red3 Rc8 21. Nc4 Rcd8 22. Ne3 R5d7 23. Nc2 Bc5 24. b4 Bb6 25. a3 Rd5 26. Kf1 e5 27. Ne3 Rxd4 28. Rxd4 exd4 29. Nc4 Bc7 30. Ke2 b5 31. Nd2 Bb6 32. Ne4 f5 33. Nc5 Kf7 34. Kd3 Rd5 35. Rc1 g6 36. Rc2 h5 37. f4 h4 38. g3 Rd8 39. gxh4 Rh8 40. Nd7 Rxh4 41. Nxb6 axb6 42. Rc7+ Kf8 43. Rc6 Rxf4 44. Rxg6 Rf3+ 45. Kxd4 Rxa3 46. Rf6+ Ke7 47. Rxf5 Rh3 1/2-1/2

[Event "JPN-ch"]
[Site "Tokyo"]
[Date "2018.05.02"]
[Round "7"]
[White "Tanaka, Hiroto"]
[Black "Matsuyama, Koya"]
[Result "0-1"]
[ECO "C00"]
[WhiteElo "1758"]
[BlackElo "1502"]
[PlyCount "96"]
[EventDate "2018.04.29"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "JPN"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 c5 3. Bg2 Nf6 4. 0-0 e6 5. d3 Nc6 6. Nbd2 Be7 7. e4 0-0 8. e5 Nd7 9. Re1 Qc7 10. Qe2 f6 11. exf6 Nxf6 12. Bh3 e5 13. Bxc8 Raxc8 14. Nxe5 Nxe5 15. Qxe5 Bd6 16. Qg5 Qf7 17. f4 Rce8 18. Rf1 Re2 19. Nf3 Rxc2 20. Nh4 Qe6 21. Nf5 g6 22. Ne3 Rxc1 23. f5 Rxf1+ 24. Rxf1 Qf7 25. h4 Qg7 26. fxg6 Qxg6 27. Nf5 Qxg5 28. hxg5 Ne8 29. Nh6+ Kg7 30. Nf5+ Kg6 31. Nh4+ Kxg5 32. Nf3+ Kg4 33. Kg2 Nc7 34. Ne5+ Kh5 35. g4+ Kg5 36. Nf7+ Kxg4 37. Nxd6 Rxf1 38. Kxf1 b6 39. Kg2 Ne6 40. Nb5 Nf4+ 41. Kf1 Nxd3 42. Nxa7 Nxb2 43. Nc8 b5 44. Nb6 d4 45. Nd7 c4 46. Nf6+ Kf5 47. Nxh7 d3 48. Ke1 c3 0-1

[Event "JPN-ch"]
[Site "Tokyo"]
[Date "2018.05.01"]
[Round "6"]
[White "Matsuyama, Koya"]
[Black "Kanda, Daigo"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1502"]
[BlackElo "1859"]
[PlyCount "120"]
[EventDate "2018.04.29"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "JPN"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. Nc3 Bg4 4. f3 Bf5 5. Bc4 a6 6. Nge2 c6 7. dxc6 Nxc6 8. d4 e6 9. Bf4 Nb4 10. Bb3 Nbd5 11. Nxd5 Nxd5 12. Bxd5 Qxd5 13. 0-0 Be7 14. b3 b5 15. c3 0-0 16. Qd2 Rac8 17. Rac1 Rfd8 18. Rfe1 Bf6 19. Ng3 Bg6 20. Ne4 Bh4 21. Bg3 Be7 22. Bf2 h6 23. Qe2 Ba3 24. Rc2 a5 25. c4 bxc4 26. bxc4 Qc6 27. c5 Rb8 28. Qe3 Qa4 29. Qd3 Rb2 30. Rxb2 Bxb2 31. Rd1 Qxa2 32. c6 Qa4 33. c7 Rc8 34. Bg3 Ba3 35. d5 exd5 36. Qxd5 Be7 37. Re1 Qb4 38. Qd7 Bf5 39. Qxf5 Rxc7 40. Qd5 Rc2 41. Qe5 Bf8 42. Ra1 a4 43. Be1 Qb6+ 44. Kh1 a3 45. Qd5 Qb2 46. Rd1 a2 47. Bf2 a1Q 48. Rxa1 Qxa1+ 49. Bg1 Rc1 50. h3 Rxg1+ 51. Kh2 Rd1 52. Qf5 Qd4 53. Qg4 Bd6+ 54. f4 Qg1+ 55. Kg3 Rd3+ 56. Kh4 Qe1+ 57. Ng3 Be7+ 58. Kh5 g6+ 59. Kxh6 Bf8+ 60. Kg5 Rxg3 0-1

[Event "JPN-ch"]
[Site "Tokyo"]
[Date "2018.05.01"]
[Round "5"]
[White "Nishino, Tatsuya"]
[Black "Matsuyama, Koya"]
[Result "0-1"]
[ECO "C45"]
[WhiteElo "1578"]
[BlackElo "1502"]
[PlyCount "46"]
[EventDate "2018.04.29"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "JPN"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Be3 Bxd4 6. Bxd4 Nf6 7. Nc3 d6 8. Bb5 0-0 9. 0-0 a6 10. Bxc6 bxc6 11. Re1 Re8 12. Qf3 Re6 13. e5 dxe5 14. Bc5 Qe8 15. Rad1 Bb7 16. Ne4 Nxe4 17. Rxe4 Rd8 18. Rd3 Rd5 19. b4 a5 20. a3 axb4 21. axb4 Qa8 22. Ra3 Qxa3 23. Qe2 Qc1+ 0-1

[Event "JPN-ch"]
[Site "Tokyo"]
[Date "2018.04.30"]
[Round "4"]
[White "Matsuyama, Koya"]
[Black "Nakahara, Kan"]
[Result "1/2-1/2"]
[ECO "B00"]
[WhiteElo "1502"]
[BlackElo "1720"]
[PlyCount "68"]
[EventDate "2018.04.29"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "JPN"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 b6 2. d4 Bb7 3. Nc3 e6 4. Nf3 d6 5. Bd3 Nd7 6. 0-0 g6 7. Ne2 Bg7 8. c4 Ne7 9. Ng3 0-0 10. Be3 c5 11. Qd2 Nc6 12. d5 exd5 13. exd5 Nce5 14. Nxe5 Nxe5 15. Be2 f5 16. Bh6 Qe7 17. Bxg7 Kxg7 18. Qf4 Qf6 19. h4 Rad8 20. b3 h6 21. Rad1 Bc8 22. Bd3 Rde8 23. Bb1 Ng4 24. Rfe1 Qxh4 25. Qxd6 Rf6 26. Re7+ Rxe7 27. Qxe7+ Kg8 28. Qd8+ Kg7 29. Qxc8 Nxf2 30. Qc7+ Rf7 31. Qe5+ Kh7 32. Kxf2 f4 33. Bxg6+ Kxg6 34. Qe4+ Kg7 1/2-1/2

[Event "JPN-ch"]
[Site "Tokyo"]
[Date "2018.04.30"]
[Round "3"]
[White "Yasuno, Naoki"]
[Black "Matsuyama, Koya"]
[Result "0-1"]
[ECO "C95"]
[WhiteElo "1792"]
[BlackElo "1502"]
[PlyCount "96"]
[EventDate "2018.04.29"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "JPN"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 0-0 9. h3 Nb8 10. d4 Nbd7 11. Nbd2 Bb7 12. Bc2 Re8 13. Nf1 Bf8 14. Ng3 g6 15. Bg5 h6 16. Bc1 Bg7 17. a4 c6 18. Nh2 d5 19. dxe5 Nxe5 20. Nf3 Nxf3+ 21. Qxf3 dxe4 22. Nxe4 Nxe4 23. Rxe4 Qd7 24. Rxe8+ Rxe8 25. Be3 c5 26. Qd1 Qc6 27. Qf1 b4 28. cxb4 cxb4 29. Bd1 Bxb2 30. Rb1 Bc3 31. Bf3 Qc7 32. Bxb7 Qxb7 33. Bxh6 Qc6 34. Qd1 Re1+ 35. Qxe1 Bxe1 36. Rxe1 Qxa4 37. Bg5 Qc6 38. Rc1 Qe6 39. Be3 b3 40. Rd1 f6 41. Rd8+ Kf7 42. Rb8 Qd5 43. Rb6 a5 44. Ra6 b2 45. Ra7+ Ke8 46. Kh2 b1Q 47. Bf4 Qbe4 48. f3 Qxf4+ 0-1

[Event "JPN-ch"]
[Site "Tokyo"]
[Date "2018.04.29"]
[Round "1"]
[White "Furuya, Masahiro"]
[Black "Matsuyama, Koya"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "1938"]
[BlackElo "1502"]
[PlyCount "45"]
[EventDate "2018.04.29"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "JPN"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. 0-0 Bg4 7. h3 Bh5 8. Re1 0-0 9. Nbd2 Re8 10. Nf1 Bg6 11. Bg5 h6 12. Bh4 a6 13. Bb3 Nb8 14. d4 exd4 15. e5 dxe5 16. Nxe5 Kf8 17. Nxg6+ fxg6 18. Rxe8+ Kxe8 19. cxd4 Qxd4 20. Qe2+ Kf8 21. Rd1 Nc6 22. Rxd4 Nxd4 23. Qc4 1-0

[Event "JPN-ch"]
[Site "Tokyo"]
[Date "2018.04.29"]
[Round "2"]
[White "Matsuyama, Koya"]
[Black "Matsumoto, Yoshitaro"]
[Result "0-1"]
[ECO "B15"]
[WhiteElo "1502"]
[BlackElo "1742"]
[PlyCount "58"]
[EventDate "2018.04.29"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "JPN"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 a6 4. Nf3 Bg4 5. Be2 Nf6 6. exd5 cxd5 7. 0-0 e6 8. Bf4 Nc6 9. Qd2 Be7 10. Rfd1 0-0 11. Ne5 Bxe2 12. Qxe2 Rc8 13. Rac1 Qb6 14. Nxc6 Rxc6 15. Na4 Qa5 16. b3 Rfc8 17. c3 Ba3 18. Rc2 Ne4 19. c4 b5 20. Nc5 Nxc5 21. dxc5 Bxc5 22. Rcd2 bxc4 23. bxc4 dxc4 24. Be5 Bf8 25. Rd7 Rc5 26. Bd6 Bxd6 27. R1xd6 c3 28. Qd3 Rd5 29. Qxc3 Qxc3 0-1

