[Event "Hiroshima Chushikoku-ch"]
[Site "Hiroshima"]
[Date "2023.02.05"]
[Round "5"]
[White "Akai, Kiyotaka"]
[Black "Onishi, Kosuke"]
[Result "0-1"]
[ECO "E32"]
[WhiteElo "1714"]
[BlackElo "1798"]
[PlyCount "56"]
[EventDate "2023.02.04"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "JPN"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 0-0 5. e4 d5 6. e5 Ne4 7. Bd3 c5 8. a3 Bxc3+ 9. bxc3 Nc6 10. cxd5 exd5 11. Nf3 Bg4 12. Be3 cxd4 13. cxd4 Qa5+ 14. Kf1 f5 15. exf6 Nxf6 16. Ne5 Nxe5 17. dxe5 Ne4 18. Bxe4 dxe4 19. Qc4+ Kh8 20. Qxe4 Bf5 21. Qxb7 Qxe5 22. Re1 Be4 23. Qb4 Qd5 24. f3 Bxf3 25. gxf3 Qxf3+ 26. Kg1 Rae8 27. Qd2 Re6 28. Bf2 Rg6+ 0-1

[Event "Hiroshima Chushikoku-ch"]
[Site "Hiroshima"]
[Date "2023.02.05"]
[Round "4"]
[White "Onishi, Kosuke"]
[Black "Kanehara, Hiromichi"]
[Result "1-0"]
[ECO "E11"]
[WhiteElo "1798"]
[BlackElo "1208"]
[PlyCount "63"]
[EventDate "2023.02.04"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "JPN"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 Bxd2+ 5. Qxd2 0-0 6. Nc3 d6 7. e4 c5 8. Be2 b6 9. Rd1 Qe7 10. dxc5 dxc5 11. e5 Nfd7 12. 0-0 Nc6 13. Qe3 Bb7 14. Bd3 g6 15. Rfe1 Rad8 16. Ne2 Nb4 17. Bb1 Nc6 18. Ng3 f5 19. exf6 Rxf6 20. h4 e5 21. Be4 Rdf8 22. Rd2 Ba8 23. Bd5+ Kh8 24. Ne4 Rf4 25. Neg5 Nd4 26. Bxa8 Rxa8 27. Qxf4 Nxf3+ 28. Nxf3 Rf8 29. Qg5 Qe6 30. b3 Rf4 31. Qd8+ Kg7 32. Qxd7+ 1-0

[Event "Hiroshima Chushikoku-ch"]
[Site "Hiroshima"]
[Date "2023.02.04"]
[Round "1"]
[White "Iizuka, Hiroshi"]
[Black "Onishi, Kosuke"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "1322"]
[BlackElo "1798"]
[PlyCount "57"]
[EventDate "2023.02.04"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "JPN"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Bd2 Bxd2+ 8. Nbxd2 d5 9. exd5 Nxd5 10. Qb3 Nce7 11. 0-0 0-0 12. h3 c6 13. Ne4 h6 14. Rad1 Qb6 15. Qxb6 axb6 16. a3 Rd8 17. Ng3 Be6 18. Rfe1 Kf8 19. Bb3 Nf4 20. Bxe6 Nxe6 21. Re2 Ra5 22. Red2 Rb5 23. Ne2 Nd5 24. Kf1 Ra8 25. Ne5 Rba5 26. Nc4 R5a7 27. Rd3 Rd8 28. Ne5 Ke7 29. Nc3 0-1

[Event "Hiroshima Chushikoku-ch"]
[Site "Hiroshima"]
[Date "2023.02.04"]
[Round "3"]
[White "Kani, Hiroaki"]
[Black "Onishi, Kosuke"]
[Result "0-1"]
[ECO "C48"]
[BlackElo "1798"]
[PlyCount "102"]
[EventDate "2023.02.04"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "JPN"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. Nc3 Nd4 5. 0-0 Nxb5 6. Nxb5 c6 7. Nc3 d6 8. d4 Qc7 9. h3 Be7 10. Re1 h6 11. b3 0-0 12. Bb2 Re8 13. Qd3 Bf8 14. Ne2 a5 15. Ng3 a4 16. c4 b6 17. b4 Nd7 18. Rad1 g6 19. Qc3 Bg7 20. d5 c5 21. b5 Nf8 22. Qc2 Nh7 23. Rd3 Rf8 24. Ra3 Qa7 25. Ne2 f5 26. Nc3 Nf6 27. Nxa4 Qb7 28. Nd2 f4 29. Nf3 g5 30. Nh2 Bd7 31. Nc3 Rxa3 32. Bxa3 Ra8 33. Bb2 Kf7 34. Qd1 h5 35. f3 Rg8 36. a4 Bh6 37. Bc1 Qc8 38. Qe2 Rg6 39. Rf1 Ke7 40. Kf2 g4 41. fxg4 hxg4 42. Ke1 gxh3 43. gxh3 Bxh3 44. Rf3 Rg1+ 45. Kd2 Rg2 46. Qxg2 Bxg2 47. Rf2 f3+ 48. Kc2 Bxc1 49. Kxc1 Ng4 50. Nxg4 Qxg4 51. Kc2 Qh4 0-1

[Event "Hiroshima Chushikoku-ch"]
[Site "Hiroshima"]
[Date "2023.02.04"]
[Round "2"]
[White "Onishi, Kosuke"]
[Black "Yonemitsu, Kohei"]
[Result "0-1"]
[ECO "D55"]
[WhiteElo "1798"]
[BlackElo "1209"]
[PlyCount "58"]
[EventDate "2023.02.04"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "JPN"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 0-0 6. e3 b6 7. cxd5 exd5 8. Bd3 Bb7 9. 0-0 Nbd7 10. Qc2 h6 11. Bh4 c5 12. dxc5 bxc5 13. Rfd1 d4 14. exd4 Bxf3 15. gxf3 cxd4 16. Ne2 Rc8 17. Qa4 Ne5 18. Kg2 Bc5 19. Be4 Qb6 20. b4 Nxe4 21. fxe4 Qg6+ 22. Ng3 Bb6 23. Be7 Rfe8 24. Bc5 Qg4 25. Rxd4 Qf3+ 26. Kg1 Nd3 27. Bxb6 Qxf2+ 28. Kh1 Qf3+ 29. Kg1 Nf4 0-1

[Event "Tokyo Japan op"]
[Site "Tokyo"]
[Date "2021.11.21"]
[Round "4"]
[White "Onishi, Kosuke"]
[Black "Nakamura, Naohiro"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "1772"]
[BlackElo "2111"]
[PlyCount "66"]
[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. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Ne7 6. 0-0 h6 7. Nbd2 Nd7 8. Nb3 g5 9. Bd2 Qc7 10. Bb4 Ng6 11. Bxf8 Kxf8 12. Rc1 Nf4 13. c4 dxc4 14. Bxc4 Nb6 15. Be2 Qe7 16. Ne1 Nxe2+ 17. Qxe2 Nd5 18. Nd3 Kg7 19. Nbc5 Rad8 20. a3 Bxd3 21. Nxd3 Nb6 22. f4 Qd7 23. Kh1 Qxd4 24. Rcd1 Nd5 25. Qh5 Ne3 26. fxg5 Nxf1 27. Rxf1 Rd7 28. Qf3 Qxd3 29. Qf6+ Kg8 30. gxh6 Rxh6 31. Qf4 Rg6 32. h3 Qg3 33. Qe4 Rd4 0-1

[Event "Tokyo Japan op"]
[Site "Tokyo"]
[Date "2021.11.20"]
[Round "2"]
[White "Onishi, Kosuke"]
[Black "Asaka, Samuel"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "1772"]
[BlackElo "2254"]
[PlyCount "86"]
[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. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Ne7 6. 0-0 Ng6 7. Be3 Nd7 8. Nbd2 f6 9. exf6 Qxf6 10. Bg5 Qf7 11. Nh4 Nxh4 12. Bxh4 Bd6 13. c4 0-0 14. Nf3 dxc4 15. Ng5 Qg6 16. Bxc4 Nb6 17. Be2 Nd5 18. Nf3 Nf4 19. Bg3 Nxe2+ 20. Qxe2 Bxg3 21. hxg3 Bd3 22. Qe3 Bxf1 23. Rxf1 Rad8 24. Re1 Rd6 25. Qb3 Qf7 26. Qa3 Rxd4 27. Qxa7 Rd5 28. Qe3 Re8 29. Ne5 Qf5 30. g4 Qc2 31. Re2 Qb1+ 32. Kh2 Qxa2 33. Qb6 Qa5 34. Qe3 Qc5 35. Qf4 Rf8 36. Qg3 Qc1 37. Nd3 Qh6+ 38. Kg1 Rfd8 39. Ne1 Qf6 40. Qb3 Rd2 41. Rxd2 Rxd2 42. f3 Qe5 43. Nd3 Qe3+ 0-1

[Event "JPN-ch"]
[Site "Tokyo"]
[Date "2020.11.02"]
[Round "6"]
[White "Higashino, Tetsuo"]
[Black "Onishi, Kosuke"]
[Result "1-0"]
[ECO "A08"]
[WhiteElo "2070"]
[BlackElo "1749"]
[PlyCount "73"]
[EventDate "2020.10.31"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "JPN"]
[SourceTitle "CBM 199 Extra"]
[Source "ChessBase"]
[SourceDate "2021.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.01.31"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 c5 3. Bg2 Nc6 4. 0-0 e5 5. d3 d5 6. Bg5 h6 7. Bxf6 Qxf6 8. Nc3 Qd8 9. Nd2 Be6 10. e4 dxe4 11. dxe4 Be7 12. Nd5 0-0 13. Nc4 f5 14. exf5 Bxf5 15. c3 Qd7 16. Nce3 Be6 17. Qa4 Bg5 18. Rad1 Qf7 19. Qb5 Rac8 20. Qxc5 Nd4 21. Qd6 Rc6 22. Qxe5 Nf3+ 23. Bxf3 Qxf3 24. h4 Bh3 25. hxg5 Re6 26. Qc7 hxg5 27. g4 Bxf1 28. Rxf1 Rh6 29. Ne7+ Kh7 30. Ng2 Rf4 31. Nf5 Rg6 32. Nge3 Rxf5 33. Nxf5 Qxg4+ 34. Ng3 Qf3 35. Qe5 Qc6 36. Qe4 Qb6 37. Kg2 1-0

[Event "JPN-ch"]
[Site "Tokyo"]
[Date "2020.11.02"]
[Round "5"]
[White "Onishi, Kosuke"]
[Black "Ogasa, Seiichi"]
[Result "1/2-1/2"]
[ECO "C11"]
[WhiteElo "1749"]
[BlackElo "1636"]
[PlyCount "122"]
[EventDate "2020.10.31"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "JPN"]
[SourceTitle "CBM 199 Extra"]
[Source "ChessBase"]
[SourceDate "2021.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.01.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 a6 8. Qd2 b5 9. Ne2 Be7 10. c3 Qc7 11. g3 Nb6 12. dxc5 Nc4 13. Qc1 b4 14. Bd4 Qa5 15. Nd2 Nxd2 16. Qxd2 Bxc5 17. Bxc5 Qxc5 18. Rc1 Bd7 19. Nd4 bxc3 20. bxc3 0-0 21. Bd3 Rfc8 22. Ke2 g6 23. Nb3 Qa3 24. h4 Ne7 25. g4 Bb5 26. h5 Qa4 27. Nd4 Bxd3+ 28. Kxd3 Kg7 29. hxg6 hxg6 30. f5 Qc4+ 31. Ke3 exf5 32. gxf5 Nxf5+ 33. Nxf5+ gxf5 34. Qh2 Qc5+ 35. Kd2 Kf8 36. Qh8+ Ke7 37. Qf6+ Kd7 38. Qxf7+ Kc6 39. Rh6+ Kb5 40. Qb7+ Ka5 41. Qb4+ Qxb4 42. cxb4+ Kxb4 43. Rb6+ Ka5 44. Rxc8 Rxc8 45. Rf6 f4 46. Rxf4 Re8 47. Rf5 Re6 48. Kd3 Kb5 49. Kd4 Kc6 50. Rf6 Rxf6 51. exf6 Kd6 52. f7 Ke7 53. Kxd5 Kxf7 54. Kc6 Ke7 55. Kb6 Kd7 56. Kxa6 Kc7 57. Ka7 Kc8 58. a4 Kc7 59. a5 Kc8 60. a6 Kc7 61. Ka8 Kc8 1/2-1/2

[Event "Tokyo City-ch"]
[Site "Tokyo"]
[Date "2019.03.23"]
[Round "3"]
[White "Higashishiba, Teruomi"]
[Black "Onishi, Kosuke"]
[Result "1-0"]
[ECO "C67"]
[WhiteElo "2118"]
[BlackElo "1757"]
[PlyCount "105"]
[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 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. dxe5 Nf5 8. Qxd8+ Kxd8 9. b3 Be7 10. Bb2 Nh4 11. Nbd2 h5 12. Rfe1 Rh6 13. Re4 Nxf3+ 14. Nxf3 Be6 15. c4 c5 16. h3 g5 17. g4 Kd7 18. Rd1+ Kc6 19. Bc1 Rg8 20. b4 b6 21. bxc5 bxc5 22. Kg2 hxg4 23. hxg4 Rhg6 24. Rd3 Rb8 25. Ra3 Rb4 26. Rc3 Ra4 27. a3 Kd7 28. Nd2 Rh6 29. f3 Rh8 30. Rb3 Kc8 31. Rd3 Rd8 32. Rxd8+ Kxd8 33. Kf2 Kd7 34. Bb2 Kc6 35. Ke2 Ra6 36. Kd3 Rb6 37. Kc2 Rb8 38. Re3 Rh8 39. Re2 Rh1 40. Bc3 Rh3 41. Re1 Rh2 42. Kd3 Rh3 43. Re3 Bc8 44. Ne4 Ba6 45. Nf6 Bxf6 46. exf6 Bc8 47. Ke4 Be6 48. Kd3 Rh1 49. Rxe6+ fxe6 50. f7 Rd1+ 51. Bd2 e5 52. f8Q e4+ 53. fxe4 1-0

[Event "Tokyo City-ch"]
[Site "Tokyo"]
[Date "2019.03.23"]
[Round "2"]
[White "Onishi, Kosuke"]
[Black "Nakahara, Kan"]
[Result "1/2-1/2"]
[ECO "E11"]
[WhiteElo "1757"]
[BlackElo "2058"]
[PlyCount "104"]
[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 e6 2. c4 Nf6 3. Nf3 Bb4+ 4. Bd2 Qe7 5. a3 Bxd2+ 6. Qxd2 d6 7. Nc3 e5 8. dxe5 dxe5 9. e4 Bg4 10. Qe3 c6 11. Ne2 Nbd7 12. Ng3 a5 13. Bd3 h6 14. 0-0 0-0 15. Nh4 Qc5 16. Qd2 Rfd8 17. Nhf5 Qa7 18. Qe3 Qxe3 19. Nxe3 Nc5 20. Bc2 Rd2 21. f3 Be6 22. Rad1 Rad8 23. Nd5 Rxd1 24. Nxf6+ gxf6 25. Rxd1 Rxd1+ 26. Bxd1 Bxc4 27. Nf5 Kh7 28. Nd6 Be6 29. b4 axb4 30. axb4 Nd3 31. Nxb7 Nxb4 32. Ba4 Kg7 33. Kf2 Kf8 34. Ke3 Ke7 35. Kd2 Bc8 36. Na5 Kd6 37. Kc3 c5 38. Nc4+ Kc7 39. Bb5 Be6 40. Ne3 Kd6 41. Bc4 h5 42. h4 Nc6 43. g4 hxg4 44. fxg4 Nd4 45. Nf5+ Bxf5 46. gxf5 Nf3 47. h5 Ng5 48. Bd5 Ke7 49. h6 Kd7 50. Kc4 Ke7 51. Kxc5 Nh7 52. Kc6 Ng5 1/2-1/2

[Event "Tokyo Summer op"]
[Site "Tokyo"]
[Date "2018.07.15"]
[Round "2"]
[White "Onishi, Kosuke"]
[Black "Kojima, Shinya"]
[Result "0-1"]
[ECO "D13"]
[WhiteElo "1751"]
[BlackElo "2497"]
[PlyCount "45"]
[EventDate "2018.07.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "JPN"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. c4 c6 4. cxd5 cxd5 5. Nc3 Nc6 6. Bf4 a6 7. Rc1 Bf5 8. e3 e6 9. a3 Be7 10. h3 Nd7 11. Bd3 Bxd3 12. Qxd3 0-0 13. 0-0 Nb6 14. b4 Nc4 15. Nb1 b5 16. Nbd2 a5 17. bxa5 Rxa5 18. Nb1 Qb6 19. Rc3 Rfa8 20. Rfc1 Bxa3 21. Nxa3 Rxa3 22. Bd6 Rxc3 23. Qxc3 0-1

