[Event "CZE-chT1W 2324"]
[Site "Czech Republic"]
[Date "2024.04.14"]
[Round "11.8"]
[White "Korenek, Frantisek"]
[Black "Mach, Ondrej"]
[Result "0-1"]
[ECO "C68"]
[WhiteElo "1875"]
[BlackElo "1912"]
[PlyCount "126"]
[EventDate "2023.10.29"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]
[WhiteTeam "Lysa nad Labem II"]
[BlackTeam "Praha Oaza"]
[WhiteTeamCountry "CZE"]
[BlackTeamCountry "CZE"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. d4 exd4 6. Qxd4 Qxd4 7. Nxd4 Bd7 8. Be3 0-0-0 9. Nd2 Ne7 10. 0-0 c5 11. N4f3 Ng6 12. Rad1 f5 13. exf5 Bxf5 14. c3 Be7 15. Rfe1 Rhe8 16. h3 b6 17. Nf1 Rxd1 18. Rxd1 Bd6 19. Re1 h6 20. Ng3 Be6 21. Bc1 Kd7 22. a3 Bd5 23. Rxe8 Kxe8 24. Ne1 Nf4 25. Be3 g6 26. Bxf4 Bxf4 27. Nd3 Bd6 28. Nf1 b5 29. Ne3 Be4 30. Ne1 Ke7 31. Kf1 Ke6 32. Ke2 Bf4 33. Nd3 Bd6 34. f3 Bc6 35. Nf2 a5 36. Ne4 h5 37. Nxd6 cxd6 38. h4 Ke5 39. g3 d5 40. Ng2 d4 41. Nf4 dxc3 42. bxc3 Be8 43. Ke3 a4 44. Kd2 Bf7 45. Ke3 Kd6 46. Nd3 Kd5 47. g4 Be8 48. Kd2 Bf7 49. g5 Be8 50. Kc2 c4 51. Ne1 Ke5 52. Kd2 Kf4 53. Ke2 Kg3 54. Ke3 Bc6 55. Nc2 Kxh4 56. Nd4 Bd7 57. Kf4 Kh3 58. Ke3 Kg2 59. Ne2 Bf5 60. Nd4 h4 61. Nxf5 h3 62. Kf4 h2 63. Ng3 b4 0-1

[Event "CZE-chT1W 2324"]
[Site "Czech Republic"]
[Date "2024.03.24"]
[Round "10.8"]
[White "Mach, Ondrej"]
[Black "Bezdek, Tomas"]
[Result "1/2-1/2"]
[ECO "E12"]
[WhiteElo "1912"]
[BlackElo "2036"]
[PlyCount "89"]
[EventDate "2023.10.29"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]
[WhiteTeam "Praha Oaza"]
[BlackTeam "Ricany Betsys"]
[WhiteTeamCountry "CZE"]
[BlackTeamCountry "CZE"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. Bg5 Be7 7. e3 0-0 8. Bd3 Nbd7 9. 0-0 c5 10. cxd5 exd5 11. Re1 Re8 12. Rc1 a6 13. Be2 c4 14. Nd2 b5 15. Bf3 Qb6 16. e4 dxe4 17. Ndxe4 Nxe4 18. Bxe7 Rxe7 19. Bxe4 Rae8 20. f3 Nf6 21. Rc2 Nxe4 22. fxe4 Rd8 23. Rd2 Red7 24. Nd5 Bxd5 25. exd5 Rxd5 26. Re7 Kf8 27. Re4 a5 28. h3 b4 29. axb4 axb4 30. Kh1 c3 31. bxc3 bxc3 32. Rd3 Rc8 33. Qc2 Qc7 34. Ree3 Rf5 35. Rd1 g6 36. Rc1 Qc4 37. Rxc3 Rf1+ 38. Rxf1 Qxf1+ 39. Kh2 Qf4+ 40. Kh1 Qf1+ 41. Kh2 Qf4+ 42. Kh1 Rd8 43. Rc8 Qxd4 44. Qc5+ Qxc5 45. Rxc5 1/2-1/2

[Event "CZE-chT1W 2324"]
[Site "Czech Republic"]
[Date "2024.02.04"]
[Round "7.8"]
[White "Pychova, Nela"]
[Black "Mach, Ondrej"]
[Result "1-0"]
[ECO "A13"]
[WhiteElo "2097"]
[BlackElo "1912"]
[PlyCount "135"]
[EventDate "2023.10.29"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]
[WhiteTeam "Vlasim Spartak"]
[BlackTeam "Praha Oaza"]
[WhiteTeamCountry "CZE"]
[BlackTeamCountry "CZE"]

1. c4 e6 2. Nf3 d5 3. b3 d4 4. Bb2 Nc6 5. d3 Nf6 6. g3 e5 7. Bg2 Bb4+ 8. Nfd2 a5 9. 0-0 Bf5 10. a3 Bc5 11. Nf3 h6 12. Nbd2 0-0 13. Ne1 Qd7 14. Ne4 Nxe4 15. dxe4 Bh7 16. Nd3 b6 17. Qd2 Rfe8 18. b4 axb4 19. axb4 Bf8 20. Rxa8 Rxa8 21. b5 Na5 22. Nxe5 Qe6 23. Qxd4 f6 24. Nd3 Qxc4 25. Qd7 Qf7 26. Qxf7+ Kxf7 27. e5 Rd8 28. Rc1 Bxd3 29. Rxc7+ Ke6 30. exd3 fxe5 31. Be4 Kd6 32. Rf7 Ke6 33. Rc7 Kd6 34. Rc3 Ke6 35. Kg2 Bc5 36. Bc1 Rf8 37. Be3 Bd4 38. Bxd4 exd4 39. Rc7 g5 40. Rh7 Rf6 41. Rh8 Nb3 42. Rb8 Ke5 43. Rd8 Rd6 44. f4+ gxf4 45. gxf4+ Ke6 46. Rh8 Kf7 47. Rh7+ Kg8 48. Rc7 Kf8 49. Rc2 Nc5 50. Kf3 Kf7 51. f5 Rd8 52. Kf4 Kf6 53. Rg2 Ke7 54. Rg7+ Kf8 55. Rg6 Nd7 56. Rxh6 Ke7 57. Re6+ Kf7 58. h4 Rh8 59. Kg5 Rg8+ 60. Rg6 Rh8 61. Bd5+ Ke7 62. Re6+ Kd8 63. f6 Kc7 64. f7 Nf8 65. Re8 Kd6 66. Be4 Kd7 67. Bf5+ Kd6 68. Kf6 1-0

[Event "CZE-chT1W 2324"]
[Site "Czech Republic"]
[Date "2023.10.29"]
[Round "1.7"]
[White "Mach, Ondrej"]
[Black "Sebo, Igor"]
[Result "1-0"]
[ECO "E71"]
[WhiteElo "1912"]
[BlackElo "1858"]
[PlyCount "77"]
[EventDate "2023.10.29"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]
[WhiteTeam "Praha Oaza"]
[BlackTeam "Praha Oaza II"]
[WhiteTeamCountry "CZE"]
[BlackTeamCountry "CZE"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 0-0 6. Be3 e5 7. d5 Ne8 8. g4 f5 9. gxf5 gxf5 10. exf5 Bxf5 11. Bd3 Qf6 12. Nge2 Na6 13. Bxf5 Qxf5 14. Ng3 Qf3 15. Qxf3 Rxf3 16. Nce4 h6 17. Nh5 Kh7 18. Kd2 Rf5 19. Nhg3 Rf7 20. Rhg1 Nf6 21. Rg2 Raf8 22. Rag1 Ne8 23. Nh5 Bf6 24. Nhxf6+ Nxf6 25. Nxf6+ Rxf6 26. Rg7+ Kh8 27. R1g6 R8f7 28. Rxf7 Rxg6 29. Rf8+ Kg7 30. Ra8 Nc5 31. Bxc5 dxc5 32. Rxa7 Rb6 33. b3 Kf6 34. Ra5 Kg5 35. Rxc5 Kh4 36. Rxc7 Kxh3 37. c5 Rf6 38. Ke3 Kg4 39. Rxb7 1-0

[Event "Klatovy op 28th"]
[Site "Klatovy"]
[Date "2022.07.04"]
[Round "3"]
[White "Mach, Ondrej"]
[Black "Skola, Miroslav"]
[Result "0-1"]
[ECO "D45"]
[WhiteElo "1910"]
[BlackElo "2086"]
[PlyCount "108"]
[EventDate "2022.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 5. Nf3 Nbd7 6. Qc2 Be7 7. Bd3 dxc4 8. Bxc4 b5 9. Be2 Bb7 10. 0-0 a6 11. e4 c5 12. d5 exd5 13. e5 Ne4 14. Rd1 Nxc3 15. bxc3 Qb8 16. Bf4 Nf8 17. a4 Ne6 18. Bd2 Bc6 19. Rab1 c4 20. Be3 Qc7 21. axb5 axb5 22. Nd4 Nxd4 23. Bxd4 0-0 24. f4 b4 25. cxb4 Ba4 26. Qf5 Bxd1 27. Bxd1 Qc8 28. Qh5 g6 29. Qf3 Qf5 30. Rc1 Bxb4 31. Bc2 Qc8 32. Kh1 Bc5 33. Qxd5 Bxd4 34. Qxd4 Rd8 35. Qe3 Qd7 36. Be4 Qd1+ 37. Qg1 Qxg1+ 38. Kxg1 Rac8 39. Kf2 c3 40. Ke3 Rc5 41. Rc2 Kf8 42. Bd3 Ke7 43. Ra2 Rd7 44. g3 Rcd5 45. Be2 Rd2 46. Ra8 Rc7 47. Ra1 Ke6 48. Ra6+ Kd7 49. Ra1 Kc6 50. Rc1 Kd5 51. Bf3+ Kc4 52. Rb1 c2 53. Rc1 Kc3 54. Be4 Rxh2 0-1

[Event "Klatovy op 28th"]
[Site "Klatovy"]
[Date "2022.07.03"]
[Round "2"]
[White "Flajsman, Pavel"]
[Black "Mach, Ondrej"]
[Result "1-0"]
[ECO "E07"]
[WhiteElo "2177"]
[BlackElo "1910"]
[PlyCount "63"]
[EventDate "2022.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. c4 e6 2. Nf3 Nf6 3. Nc3 d5 4. d4 Be7 5. g3 Nbd7 6. Bg2 c6 7. Qd3 b6 8. 0-0 Bb7 9. Rd1 0-0 10. e4 dxe4 11. Nxe4 c5 12. Nfg5 Qc8 13. d5 exd5 14. cxd5 h6 15. d6 Bd8 16. Nxf6+ Nxf6 17. d7 Qb8 18. Ne4 a6 19. Bf4 Qa7 20. Be5 Bxe4 21. Bxe4 Nxe4 22. Qxe4 Bc7 23. Bd6 Bxd6 24. Rxd6 Qc7 25. Rad1 Rfd8 26. Qe7 b5 27. R1d3 f6 28. Re3 Ra7 29. Qxd8+ Qxd8 30. Re8+ Kf7 31. Rxd8 Ke7 32. Re8+ 1-0

[Event "Klatovy op 28th"]
[Site "Klatovy"]
[Date "2022.07.02"]
[Round "1"]
[White "Mach, Ondrej"]
[Black "Kopta, Pavel"]
[Result "1-0"]
[ECO "A70"]
[WhiteElo "1910"]
[BlackElo "2234"]
[PlyCount "49"]
[EventDate "2022.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. Bf4 a6 8. e4 Bg7 9. a4 0-0 10. Bd3 Re8 11. 0-0 Nh5 12. Bg5 Qb6 13. Qc1 Nd7 14. Nd2 Ne5 15. Be2 f5 16. a5 Qc7 17. Bxh5 gxh5 18. exf5 Bxf5 19. Nde4 Rf8 20. Bh6 Rae8 21. Qg5 Bg6 22. Bxg7 Kxg7 23. f4 h6 24. Qg3 Ng4 25. f5 1-0

[Event "Prague Menchik Memorial Rapid"]
[Site "Prague"]
[Date "2022.06.05"]
[Round "1"]
[White "Mach, Ondrej"]
[Black "Ustinov, Oleg"]
[Result "1-0"]
[ECO "E20"]
[WhiteElo "1955"]
[BlackElo "2249"]
[PlyCount "67"]
[EventDate "2022.06.05"]
[EventType "swiss (rapid)"]
[EventRounds "7"]
[EventCountry "CZE"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 Bxc3+ 5. bxc3 d6 6. e4 c5 7. Bd3 Nc6 8. Ne2 e5 9. Be3 b6 10. 0-0 Na5 11. Nc1 Ba6 12. Qe2 cxd4 13. cxd4 Rc8 14. Nb3 Nxc4 15. Bg5 0-0 16. dxe5 dxe5 17. Rfd1 Qe7 18. Rac1 b5 19. Bxc4 bxc4 20. Na5 Qc5+ 21. Qf2 Qxa5 22. Rd6 Ne8 23. Rd7 f6 24. Bd2 Qxa2 25. Rxa7 c3 26. Rxc3 Rxc3 27. Bxc3 Qc4 28. Bd2 Nd6 29. h4 Qe2 30. Qg3 Nf7 31. Bb4 Rc8 32. Qg4 Qd1+ 33. Kh2 Qd8 34. Rxa6 1-0

[Event "CZE-chT2A 2122"]
[Site "Czech Republic"]
[Date "2022.02.27"]
[Round "9.7"]
[White "Lacina, Filip"]
[Black "Mach, Ondrej"]
[Result "1/2-1/2"]
[ECO "B10"]
[WhiteElo "1978"]
[BlackElo "1893"]
[PlyCount "89"]
[EventDate "2021.10.17"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]
[WhiteTeam "Vysehrad Sokol II"]
[BlackTeam "Praha Oaza II"]
[WhiteTeamCountry "CZE"]
[BlackTeamCountry "CZE"]

1. e4 c6 2. d3 d5 3. Nd2 e5 4. Ngf3 Bd6 5. g3 f5 6. exd5 cxd5 7. c4 Nf6 8. cxd5 0-0 9. Bg2 b5 10. a4 Bb7 11. axb5 Bxd5 12. 0-0 Qc7 13. Nc4 Nbd7 14. Ne3 Bb7 15. Nxf5 Bc5 16. Ne3 Rab8 17. b4 Bd4 18. Bb2 Bxf3 19. Bxf3 Rxb5 20. Qb3+ Kh8 21. Bxd4 exd4 22. Nc4 Rfb8 23. Qa4 Rxb4 24. Qxa7 Qxa7 25. Rxa7 Nc5 26. Ne5 Rb3 27. Nc6 Rc8 28. Nxd4 Rxd3 29. Rd1 Rxd1+ 30. Bxd1 Rd8 31. Bb3 Nxb3 32. Nxb3 h5 33. Kg2 Rd5 34. Nc1 Ng4 35. h3 Ne5 36. Ne2 Rd2 37. Nf4 h4 38. Ra5 g5 39. Rxe5 hxg3 40. Rxg5 gxf2 41. Nh5 Kh7 42. Nf6+ Kh6 43. Rg3 f1Q+ 44. Kxf1 Rf2+ 45. Kxf2 1/2-1/2

[Event "CZE-chT2A 2122"]
[Site "Czech Republic"]
[Date "2022.02.13"]
[Round "8.6"]
[White "Havlik, Jan1"]
[Black "Mach, Ondrej"]
[Result "0-1"]
[ECO "C56"]
[WhiteElo "1913"]
[BlackElo "1893"]
[PlyCount "80"]
[EventDate "2021.10.17"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]
[WhiteTeam "Prachatice Tatran"]
[BlackTeam "Praha Oaza II"]
[WhiteTeamCountry "CZE"]
[BlackTeamCountry "CZE"]

1. e4 e5 2. Bc4 Nf6 3. d4 Nc6 4. Nf3 exd4 5. 0-0 Nxe4 6. Re1 d5 7. Bxd5 Qxd5 8. Nc3 Qa5 9. Nxe4 Be6 10. Bg5 h6 11. Bh4 Bb4 12. Ned2 g5 13. Bg3 0-0-0 14. a3 Bxd2 15. Nxd2 Rhe8 16. b4 Qa4 17. Ne4 Bf5 18. f3 Qb5 19. Qd2 d3 20. c3 Bxe4 21. fxe4 Ne5 22. Bxe5 Rxe5 23. Re3 Qc4 24. Rd1 Rxe4 25. Rxd3 Qxd3 26. Qxd3 Rxd3 27. Rxd3 Rf4 28. a4 Rf6 29. a5 c6 30. g3 Kc7 31. Kg2 b6 32. axb6+ Kxb6 33. c4 a6 34. Rb3 c5 35. b5 a5 36. Ra3 Rd6 37. Kf3 Rd4 38. Ra4 f5 39. h3 Rd3+ 40. Kg2 Rb3 0-1

[Event "CZE-chT2A 2122"]
[Site "Czech Republic"]
[Date "2022.01.30"]
[Round "7.6"]
[White "Mach, Ondrej"]
[Black "Plasek, Zdenek"]
[Result "1/2-1/2"]
[ECO "D35"]
[WhiteElo "1893"]
[BlackElo "1957"]
[PlyCount "111"]
[EventDate "2021.10.17"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]
[WhiteTeam "Praha Oaza II"]
[BlackTeam "Praha Vrsovice"]
[WhiteTeamCountry "CZE"]
[BlackTeamCountry "CZE"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 c6 6. e3 Bd6 7. Bd3 Nbd7 8. Nge2 Qc7 9. Bf4 0-0 10. Rc1 Qb8 11. b4 Nh5 12. Bxd6 Qxd6 13. b5 Ndf6 14. bxc6 bxc6 15. Ng3 g6 16. Nxh5 Nxh5 17. 0-0 f5 18. g3 f4 19. exf4 Bh3 20. Qd2 Bxf1 21. Bxf1 Rab8 22. Na4 Ng7 23. Nc5 Ne6 24. Bh3 Nxc5 25. Rxc5 Rb1+ 26. Kg2 Rfb8 27. Qa5 Qe7 28. Bg4 R1b5 29. Rxb5 Rxb5 30. Qa6 Qc7 31. Qa3 Kf7 32. f5 Qe7 33. fxg6+ hxg6 34. Qc1 Qf6 35. Qc3 Rb7 36. Bf3 Rb6 37. Qa3 Qe7 38. Qc1 Qf6 39. Qa3 Rb7 40. Qc5 Rd7 41. Bg4 Rc7 42. Bf3 Qe7 43. Qc1 Qd6 44. h4 c5 45. dxc5 Rxc5 46. Qh6 Qf6 47. h5 d4 48. Qh7+ Qg7 49. hxg6+ Kf6 50. Qh4+ Kxg6 51. Be4+ Kf7 52. Qd8 Qe5 53. Qd7+ Kf6 54. Qd8+ Kf7 55. Qd7+ Kf6 56. Qd8+ 1/2-1/2

[Event "CZE-chT2A 2122"]
[Site "Czech Republic"]
[Date "2022.01.16"]
[Round "6.8"]
[White "Mindl, Josef"]
[Black "Mach, Ondrej"]
[Result "0-1"]
[ECO "B14"]
[WhiteElo "1910"]
[BlackElo "1893"]
[PlyCount "102"]
[EventDate "2021.10.17"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]
[WhiteTeam "Tabor"]
[BlackTeam "Praha Oaza II"]
[WhiteTeamCountry "CZE"]
[BlackTeamCountry "CZE"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 g6 6. Qb3 Bg7 7. cxd5 0-0 8. Be2 Nbd7 9. Bf3 Nb6 10. Nge2 Bf5 11. 0-0 Bd3 12. d6 Qxd6 13. Bf4 Qd7 14. Rfd1 Bc4 15. Qa3 Be6 16. Rac1 Bg4 17. Bxg4 Qxg4 18. h3 Qd7 19. Qa5 Nbd5 20. Nxd5 Nxd5 21. Be5 b6 22. Qd2 Rac8 23. Bxg7 Kxg7 24. Rxc8 Rxc8 25. Rc1 Rxc1+ 26. Qxc1 Qc7 27. Qxc7 Nxc7 28. Kf1 Kf6 29. Ke1 Kf5 30. f3 Nd5 31. Kd2 h5 32. g3 h4 33. gxh4 Nf4 34. Ng3+ Ke6 35. h5 gxh5 36. h4 Kd5 37. Nf5 e6 38. Ne7+ Kxd4 39. Nc6+ Kc5 40. Ne5 f5 41. Nd7+ Kd6 42. Nf6 Ke7 43. Nh7 Ng6 44. Ke3 e5 45. Ng5 Nxh4 46. Nh3 Kf6 47. Kf2 f4 48. Ke2 Kf5 49. Kf2 e4 50. fxe4+ Kxe4 51. Ng5+ Kd3 0-1

[Event "Prague op-A 20th"]
[Site "Prague"]
[Date "2022.01.13"]
[Round "8"]
[White "Michalczak, Thomas"]
[Black "Mach, Ondrej"]
[Result "1-0"]
[ECO "A47"]
[WhiteElo "2218"]
[BlackElo "1886"]
[PlyCount "81"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 b6 3. Bg5 Ne4 4. Bh4 Bb7 5. Nbd2 d5 6. e3 Nxd2 7. Qxd2 c5 8. dxc5 bxc5 9. Bb5+ Bc6 10. Bxc6+ Nxc6 11. Rd1 Qb6 12. Qxd5 Rd8 13. Qb3 Rxd1+ 14. Kxd1 e6 15. Nd2 Qa6 16. Qc4 Qb7 17. Kc1 Bd6 18. Ne4 Be5 19. c3 0-0 20. Nxc5 Qc7 21. Bg3 Rd8 22. Rd1 Rxd1+ 23. Kxd1 Qd6+ 24. Ke2 Bxg3 25. hxg3 h6 26. b4 Qe5 27. Nd3 Qd6 28. Qc5 Qd7 29. a4 Ne7 30. b5 Nd5 31. Ne5 Qd8 32. e4 Nb6 33. a5 Na4 34. Qb4 Qg5 35. Qxa4 Qxe5 36. Qb4 Qg5 37. b6 Qc1 38. Qb3 axb6 39. axb6 Qa1 40. b7 Qa6+ 41. c4 1-0

[Event "Prague op-A 20th"]
[Site "Prague"]
[Date "2022.01.12"]
[Round "7"]
[White "Mach, Ondrej"]
[Black "Sorm, Daniel"]
[Result "0-1"]
[ECO "D38"]
[WhiteElo "1886"]
[BlackElo "2345"]
[PlyCount "80"]
[EventDate "2022.01.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Bg5 h6 6. Bxf6 Qxf6 7. a3 Bxc3+ 8. bxc3 0-0 9. e3 c5 10. Bd3 dxc4 11. Bxc4 b6 12. 0-0 Bb7 13. Ne5 Qg5 14. Qg4 Qxg4 15. Nxg4 Nd7 16. f3 Rfc8 17. Bb5 Bc6 18. Bxc6 Rxc6 19. Ne5 Nxe5 20. dxe5 Rd8 21. Rfd1 Rcc8 22. c4 Kf8 23. Kf2 Ke7 24. Rxd8 Rxd8 25. Ke2 Rd7 26. a4 Kd8 27. f4 h5 28. g4 hxg4 29. Rg1 g6 30. Rxg4 Kc7 31. Rg1 Kb7 32. a5 bxa5 33. Rb1+ Ka6 34. Rb5 a4 35. Rxc5 a3 36. Rc6+ Ka5 37. Rc5+ Ka4 38. Rc6 a5 39. Rd6 Rb7 40. Rd1 a2 0-1

[Event "CZE-chT2A 2122"]
[Site "Czech Republic"]
[Date "2021.12.05"]
[Round "4.8"]
[White "Jonas, Vaclav"]
[Black "Mach, Ondrej"]
[Result "1-0"]
[ECO "B11"]
[WhiteElo "1991"]
[BlackElo "1893"]
[PlyCount "97"]
[EventDate "2021.10.17"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]
[WhiteTeam "Klatovy"]
[BlackTeam "Praha Oaza II"]
[WhiteTeamCountry "CZE"]
[BlackTeamCountry "CZE"]

1. e4 c6 2. Nc3 d5 3. Nf3 Bg4 4. h3 Bxf3 5. Qxf3 e6 6. d4 Nf6 7. Bg5 Be7 8. 0-0-0 Nxe4 9. Bxe7 Qxe7 10. Nxe4 dxe4 11. Qxe4 Nd7 12. f4 0-0-0 13. g4 g6 14. c3 Rhe8 15. Bg2 Nf6 16. Qf3 Nd5 17. Kb1 Qc7 18. Rhf1 Kb8 19. Rde1 Nb6 20. Re2 Nc4 21. Rfe1 Nd6 22. Bf1 Rh8 23. Re5 Ne8 24. f5 exf5 25. Re7 Qc8 26. gxf5 Nd6 27. fxg6 fxg6 28. h4 Rd7 29. Bh3 Rxe7 30. Rxe7 Qf8 31. Qxf8+ Rxf8 32. Rxh7 Nf5 33. Bxf5 Rxf5 34. Rh6 Rf4 35. Kc2 Kc7 36. Kd3 Rf2 37. Rxg6 Rxb2 38. h5 Rxa2 39. h6 Rh2 40. Rg7+ Kb6 41. h7 a5 42. c4 Rh3+ 43. Kc2 Ka6 44. d5 Kb6 45. d6 Rh2+ 46. Kd3 Rh3+ 47. Ke4 Rh4+ 48. Ke5 a4 49. c5+ 1-0

[Event "CZE-chT2A 2122"]
[Site "Czech Republic"]
[Date "2021.11.21"]
[Round "3.8"]
[White "Mach, Ondrej"]
[Black "Reichel, Tomas"]
[Result "0-1"]
[ECO "D06"]
[WhiteElo "1893"]
[BlackElo "1891"]
[PlyCount "104"]
[EventDate "2021.10.17"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]
[WhiteTeam "Praha Oaza II"]
[BlackTeam "Unichess Sekacek"]
[WhiteTeamCountry "CZE"]
[BlackTeamCountry "CZE"]

1. d4 d5 2. c4 Bf5 3. Nc3 e6 4. cxd5 exd5 5. Qb3 Nc6 6. e4 Bxe4 7. Nxe4 dxe4 8. Qxb7 Bb4+ 9. Bd2 Bxd2+ 10. Kxd2 Qxd4+ 11. Ke1 Qb4+ 12. Qxb4 Nxb4 13. Rc1 0-0-0 14. Rc4 Nd3+ 15. Bxd3 Rxd3 16. Rxe4 Nf6 17. Re3 Rxe3+ 18. fxe3 Re8 19. Nf3 Rxe3+ 20. Kd2 Re6 21. Rc1 Rb6 22. Rc2 Nd5 23. a3 Rg6 24. g3 Rd6 25. Ke2 Re6+ 26. Kd3 Re3+ 27. Kd4 Rxf3 28. Kxd5 Kd7 29. Ke5 Rd3 30. g4 f6+ 31. Kf5 Rd5+ 32. Ke4 Re5+ 33. Kf4 Kd6 34. h4 c5 35. Rc4 Kd5 36. Ra4 Re7 37. h5 c4 38. Kf5 Re5+ 39. Kf4 Re7 40. Kf5 Rb7 41. h6 gxh6 42. Kxf6 Rxb2 43. Rxa7 Rg2 44. Rd7+ Ke4 45. Re7+ Kd3 46. Rd7+ Kc2 47. Rd4 c3 48. Kf5 Kc1 49. a4 c2 50. a5 Kb2 51. Rb4+ Kc3 52. Rb7 c1Q 0-1

[Event "CZE-chT2A 2122"]
[Site "Czech Republic"]
[Date "2021.11.07"]
[Round "2.8"]
[White "Ptak, Pavel"]
[Black "Mach, Ondrej"]
[Result "1-0"]
[ECO "A40"]
[WhiteElo "2012"]
[BlackElo "1893"]
[PlyCount "97"]
[EventDate "2021.10.17"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "CZE"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]
[WhiteTeam "Pisek"]
[BlackTeam "Praha Oaza II"]
[WhiteTeamCountry "CZE"]
[BlackTeamCountry "CZE"]

1. g3 g6 2. Bg2 Bg7 3. d4 d5 4. c4 dxc4 5. Nf3 c6 6. 0-0 Nf6 7. a4 a5 8. Na3 0-0 9. Nxc4 Be6 10. b3 Bd5 11. Ba3 Ne4 12. Qc2 Re8 13. Rad1 Nd6 14. Ncd2 f5 15. Ne5 Bxg2 16. Kxg2 Nf7 17. Nxf7 Kxf7 18. Nf3 Kg8 19. Rfe1 Nd7 20. d5 Qc8 21. dxc6 bxc6 22. Bb2 Nf6 23. Qc4+ Kh8 24. Rd3 Qa6 25. Rc1 Qxc4 26. Rxc4 Nd5 27. Bxg7+ Kxg7 28. Nd4 Nb4 29. Rdc3 Rec8 30. Nxc6 Nxc6 31. Rxc6 Rxc6 32. Rxc6 Rb8 33. Rc5 Ra8 34. Rc6 h5 35. Rb6 Kf7 36. Kf3 e6 37. h4 Kf6 38. Rb5 g5 39. hxg5+ Kxg5 40. e3 Kf6 41. Kf4 Kg6 42. e4 Rf8 43. Rb6 fxe4+ 44. Kxe4 Rxf2 45. Rxe6+ Kg5 46. Re5+ Kg4 47. Rxa5 Kxg3 48. Rxh5 Rf4+ 49. Kd3 1-0

[Event "Ceske Budejovice op"]
[Site "Ceske Budejovice"]
[Date "2021.07.09"]
[Round "9"]
[White "Mach, Ondrej"]
[Black "Valenta, Vit"]
[Result "1-0"]
[ECO "E70"]
[WhiteElo "1834"]
[BlackElo "2019"]
[PlyCount "53"]
[EventDate "2021.07.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 0-0 6. Nf3 Nc6 7. e5 dxe5 8. fxe5 Ne8 9. Be2 f6 10. exf6 exf6 11. 0-0 Bg4 12. Nd5 Nd6 13. b3 Ne7 14. Nf4 g5 15. Nd3 Ne4 16. Bb2 Nf5 17. Re1 Re8 18. h3 Bh5 19. Nf2 Nxf2 20. Kxf2 Qd6 21. Qd2 Qg3+ 22. Kg1 Re3 23. Nh2 Rae8 24. Nf1 Rxe2 25. Rxe2 Rxe2 26. Qxe2 Bxe2 27. Nxg3 1-0

[Event "Ceske Budejovice op"]
[Site "Ceske Budejovice"]
[Date "2021.07.08"]
[Round "8"]
[White "Brom, Jiri"]
[Black "Mach, Ondrej"]
[Result "0-1"]
[ECO "C77"]
[WhiteElo "1998"]
[BlackElo "1834"]
[PlyCount "100"]
[EventDate "2021.07.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Bxc6 dxc6 6. d3 Bd6 7. h3 Be6 8. Nbd2 Nd7 9. b3 Qe7 10. a4 g5 11. Bb2 0-0-0 12. Nc4 f6 13. Nfd2 h5 14. Qe2 Bc5 15. 0-0-0 b5 16. axb5 axb5 17. Ne3 Ba3 18. Nb1 Bxb2+ 19. Kxb2 Kb7 20. Nd2 Qb4 21. c3 Qd6 22. Nc2 Nc5 23. d4 exd4 24. cxd4 Nd7 25. Ra1 Nb6 26. Rhd1 Ra8 27. Rxa8 Rxa8 28. Ra1 Rxa1 29. Kxa1 h4 30. Kb2 c5 31. e5 fxe5 32. dxc5 Qxc5 33. Ne4 Qd5 34. Qe3 Nd7 35. Nxg5 Bf5 36. Nf3 Nc5 37. Nxe5 Nxb3 38. Nb4 Qd4+ 39. Kxb3 Qd1+ 40. Kc3 Qa1+ 41. Kd2 Qb2+ 42. Kd1 Qxb4 43. Nd3 Bxd3 44. Qxd3 Ka6 45. Qd5 Qf4 46. Qd2 Qc4 47. Ke1 b4 48. Qe2 Kb5 49. Qxc4+ Kxc4 50. Kd1 Kb3 0-1

[Event "Ceske Budejovice op"]
[Site "Ceske Budejovice"]
[Date "2021.07.07"]
[Round "7"]
[White "Mach, Ondrej"]
[Black "Simajchl, Adam"]
[Result "1-0"]
[ECO "A52"]
[WhiteElo "1834"]
[BlackElo "1594"]
[PlyCount "35"]
[EventDate "2021.07.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Bf4 Bb4+ 5. Nc3 Nc6 6. Nf3 Qe7 7. Qb3 Na5 8. Qc2 Nxc4 9. a3 Ba5 10. b4 Bb6 11. e3 Ncxe5 12. Nxe5 Nxe5 13. Nd5 Qd6 14. Rd1 f6 15. Be2 Qc6 16. Qb3 d6 17. a4 a5 18. Bb5 1-0

[Event "Ceske Budejovice op"]
[Site "Ceske Budejovice"]
[Date "2021.07.06"]
[Round "6"]
[White "Zauner, Christoph"]
[Black "Mach, Ondrej"]
[Result "1-0"]
[ECO "C24"]
[WhiteElo "2007"]
[BlackElo "1834"]
[PlyCount "149"]
[EventDate "2021.07.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. d3 Nc6 4. Nf3 d5 5. exd5 Nxd5 6. Nc3 Nxc3 7. bxc3 Be7 8. h3 Bf5 9. Qe2 0-0 10. a4 Bf6 11. 0-0 Re8 12. Nd2 e4 13. dxe4 Bxc3 14. Bxf7+ Kxf7 15. Qc4+ Be6 16. Qxc3 Qf6 17. Bb2 Rad8 18. Nf3 Qg6 19. Nh4 Qf6 20. Qf3 Qxf3 21. Nxf3 Na5 22. Ng5+ Kg8 23. Nxe6 Rxe6 24. Rad1 Red6 25. Rxd6 Rxd6 26. Be5 Rc6 27. Rd1 Nc4 28. Bf4 Nb6 29. a5 Nc4 30. Rd8+ Kf7 31. Rd7+ Kf8 32. Bxc7 b6 33. axb6 Nxb6 34. Bxb6 axb6 35. Rb7 Rxc2 36. Rxb6 Kf7 37. h4 h5 38. Rb5 g6 39. Rb6 Ra2 40. Kf1 Rc2 41. g3 Rc4 42. f3 Rc2 43. Rb3 Ra2 44. Re3 Ke6 45. f4 Rb2 46. Re2 Rb3 47. Kf2 Ra3 48. Re3 Ra1 49. Rb3 Rc1 50. Rb6+ Kf7 51. Rb3 Ke6 52. Ke3 Re1+ 53. Kd4 Rd1+ 54. Ke3 Re1+ 55. Kf3 Rf1+ 56. Ke2 Rg1 57. Ra3 Kf6 58. Ra6+ Kf7 59. Kf2 Rb1 60. e5 Rb2+ 61. Kf3 Rb3+ 62. Kg2 Rb2+ 63. Kh3 Rb3 64. f5 gxf5 65. Rf6+ Kg7 66. Rxf5 Kg6 67. Rg5+ Kh6 68. Kg2 Ra3 69. Kf2 Rb3 70. e6 Rb7 71. Kf3 Re7 72. Re5 Kg6 73. Kf4 Re8 74. e7 Kf6 75. Ke4 1-0

[Event "Ceske Budejovice op"]
[Site "Ceske Budejovice"]
[Date "2021.07.05"]
[Round "5"]
[White "Mach, Ondrej"]
[Black "Neumann, Filip"]
[Result "0-1"]
[ECO "D32"]
[WhiteElo "1834"]
[BlackElo "2082"]
[PlyCount "46"]
[EventDate "2021.07.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 cxd4 5. Qa4+ Bd7 6. Qxd4 exd5 7. Qxd5 Nc6 8. Bf4 Nf6 9. Qd1 Qb6 10. Qc1 Bf5 11. e3 Nb4 12. Bb5+ Ke7 13. Kf1 Ne4 14. Nge2 Rc8 15. Nd4 Qg6 16. a3 Nxc3 17. bxc3 Bd3+ 18. Kg1 Nd5 19. Qd2 Bb1 20. Ne2 Rd8 21. h3 Nxf4 22. Nxf4 Rxd2 23. Nxg6+ Bxg6 0-1

[Event "Ceske Budejovice op"]
[Site "Ceske Budejovice"]
[Date "2021.07.04"]
[Round "4"]
[White "Kuntner, Reinhard1"]
[Black "Mach, Ondrej"]
[Result "1/2-1/2"]
[ECO "D93"]
[WhiteElo "2101"]
[BlackElo "1834"]
[PlyCount "103"]
[EventDate "2021.07.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. c4 c5 2. Nf3 g6 3. e3 Bg7 4. d4 cxd4 5. exd4 d5 6. Nc3 Nf6 7. Bf4 0-0 8. Be2 dxc4 9. 0-0 Nd5 10. Be5 Be6 11. Ne4 Bxe5 12. Nxe5 f6 13. Nc5 Qc8 14. Nxe6 Qxe6 15. Bg4 Qa6 16. Bf3 e6 17. Ng4 Nd7 18. g3 Qd6 19. Re1 b5 20. a4 a6 21. Qe2 Rae8 22. axb5 axb5 23. Ra5 Nc7 24. Qd2 e5 25. d5 f5 26. Ne3 e4 27. Bg2 Nc5 28. Qb4 Qb6 29. Nxc4 Nd3 30. Qxf8+ Kxf8 31. Nxb6 Nxe1 32. d6 Ne6 33. Rxb5 Rd8 34. Nc4 Rd7 35. Rb8+ Kg7 36. Kf1 Nd3 37. Ke2 Nd4+ 38. Ke3 Nc2+ 39. Kd2 Nd4 40. Bf1 Nf3+ 41. Ke3 Nde5 42. Rb6 Ng4+ 43. Ke2 Ngxh2 44. Bg2 Kf6 45. Bxf3 Nxf3 46. Ke3 Ne5 47. Kd4 Nxc4 48. Kxc4 Ke6 49. Kc5 g5 50. b4 f4 51. gxf4 gxf4 52. Kd4 1/2-1/2

[Event "Ceske Budejovice op"]
[Site "Ceske Budejovice"]
[Date "2021.07.03"]
[Round "3"]
[White "Kratochvil, Vit"]
[Black "Mach, Ondrej"]
[Result "1-0"]
[ECO "B15"]
[WhiteElo "2228"]
[BlackElo "1834"]
[PlyCount "89"]
[EventDate "2021.07.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. c3 Bd6 7. Bd3 0-0 8. Qc2 Re8+ 9. Ne2 h5 10. Be3 Nd7 11. 0-0-0 Nf8 12. Kb1 Be6 13. c4 b5 14. d5 cxd5 15. cxd5 Bxd5 16. Bh7+ Nxh7 17. Rxd5 Qe7 18. Rxh5 g6 19. Rxb5 Be5 20. h4 Rab8 21. Rxb8 Rxb8 22. Bd4 Qb7 23. Bxe5 fxe5 24. f3 Nf6 25. Nc3 a5 26. Re1 Qb4 27. Rxe5 Qxh4 28. a4 Qb4 29. Rb5 Rxb5 30. axb5 Qc5 31. Qb3 Nd7 32. Ne4 Qb6 33. Qd5 Nf6 34. Qc6 Qg1+ 35. Ka2 Nxe4 36. fxe4 Qd4 37. b6 Qb4 38. b7 Kh7 39. Qd5 a4 40. Qxf7+ Kh6 41. Qd5 Qb6 42. e5 Kg5 43. e6+ Kf6 44. e7 Kxe7 45. Qe5+ 1-0

[Event "Ceske Budejovice op"]
[Site "Ceske Budejovice"]
[Date "2021.07.02"]
[Round "2"]
[White "Mach, Ondrej"]
[Black "Hak, David"]
[Result "1/2-1/2"]
[ECO "A58"]
[WhiteElo "1834"]
[BlackElo "2187"]
[PlyCount "177"]
[EventDate "2021.07.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 g6 6. Nc3 Bg7 7. e4 0-0 8. Nf3 d6 9. Bd3 Qa5 10. 0-0 Bxa6 11. Bxa6 Nxa6 12. Qe2 Rfb8 13. Nd2 Nd7 14. Nc4 Qb4 15. a3 Qb3 16. Na5 Qb6 17. Nc6 Re8 18. a4 Nab8 19. Nxb8 Rexb8 20. Nb5 Qa6 21. Ra3 Nb6 22. b3 Rc8 23. Bb2 Bxb2 24. Qxb2 c4 25. Rfa1 cxb3 26. Qxb3 Nc4 27. R3a2 Na5 28. Qd1 Rc4 29. Rc1 Rxc1 30. Qxc1 Nb3 31. Qe3 Qc8 32. h4 Qc4 33. Qc3 Rxa4 34. Rxa4 Qxa4 35. Qc8+ Kg7 36. Qc3+ Kg8 37. Qc8+ Kg7 38. Qc3+ f6 39. Qc7 Qxe4 40. Na7 Qe1+ 41. Kh2 Qe5+ 42. Kg1 Nd4 43. Nc6 Qe1+ 44. Kh2 Nf5 45. Qa7 Qe4 46. g3 h6 47. Kg1 h5 48. Kh2 Kh7 49. Kg1 Qxd5 50. Nxe7 Qf7 51. Nc6 Qxa7 52. Nxa7 g5 53. hxg5 fxg5 54. Kg2 Kg6 55. Kf3 Nd4+ 56. Ke4 h4 57. gxh4 gxh4 58. Kf4 Kh5 59. Nc8 Ne6+ 60. Kf3 d5 61. Ne7 d4 62. Nf5 d3 63. Ke3 Nc5 64. Nd4 Kg4 65. Nf3 Nb3 66. Ne5+ Kh3 67. Nxd3 Kg2 68. f4 h3 69. f5 h2 70. Nf2 Nd4 71. f6 Nf5+ 72. Ke2 Nd6 73. Ke1 Ne4 74. f7 Nxf2 75. f8Q h1Q+ 76. Kd2 Qd1+ 77. Kc3 Qc1+ 78. Kd4 Qd2+ 79. Kc4 Qc2+ 80. Kd5 Qe4+ 81. Kc5 Nd3+ 82. Kb6 Qe6+ 83. Kc7 Ne5 84. Qa8+ Kg3 85. Qa3+ Kg4 86. Qb4+ Kf5 87. Qf8+ Kg6 88. Qd6 Qxd6+ 89. Kxd6 1/2-1/2

[Event "Ceske Budejovice op"]
[Site "Ceske Budejovice"]
[Date "2021.07.01"]
[Round "1"]
[White "Mach, Ondrej"]
[Black "Flajsman, Pavel"]
[Result "1-0"]
[ECO "E71"]
[WhiteElo "1834"]
[BlackElo "2184"]
[PlyCount "127"]
[EventDate "2021.07.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. d4 d6 2. e4 g6 3. c4 Bg7 4. Nc3 Nf6 5. h3 0-0 6. Be3 e5 7. d5 a5 8. g4 Na6 9. Nge2 Nc5 10. Ng3 Bd7 11. Qd2 a4 12. Rc1 Qc8 13. Be2 b6 14. g5 Ne8 15. h4 f5 16. gxf6 Nxf6 17. h5 Ng4 18. hxg6 hxg6 19. Bxg4 Bxg4 20. Bh6 Rf4 21. Bxg7 Kxg7 22. Nce2 Bxe2 23. Nxe2 Rxe4 24. Qh6+ Kf6 25. Rc3 Qg4 26. f3 Qg3+ 27. Kd1 Rxe2 28. Kxe2 Qg2+ 29. Kd1 Qxb2 30. Qh4+ Kf7 31. Rc2 Qa3 32. Rhh2 Qxf3+ 33. Rce2 Nd3 34. Qh7+ Kf6 35. Qxc7 Nf4 36. Qxd6+ Kg5 37. Qe7+ Kf5 38. Qf7+ Kg4 39. Qd7+ Kg5 40. Qe7+ Kf5 41. Qxe5+ Kg4 42. Qe4 Qxe4 43. Rxe4 Kf5 44. Re7 g5 45. d6 g4 46. d7 g3 47. Rd2 Rd8 48. Ke1 g2 49. Kf2 Rg8 50. Re1 Nh3+ 51. Ke3 Rd8 52. Rxg2 Rxd7 53. Rf1+ Ke5 54. Rf3 Rh7 55. Rgg3 Rc7 56. Rxh3 Rxc4 57. Rh5+ Ke6 58. Rh6+ Ke5 59. Kd3 Rb4 60. Kc3 Rb1 61. Rff6 b5 62. Rb6 a3 63. Rxb5+ Rxb5 64. Rh5+ 1-0

[Event "CZE-ch Betsys Online Blitz"]
[Site "Chess.com INT"]
[Date "2021.04.17"]
[Round "11"]
[White "Bohacek, Milan"]
[Black "Mach, Ondrej"]
[Result "0-1"]
[ECO "C38"]
[WhiteElo "2051"]
[BlackElo "1824"]
[PlyCount "82"]
[EventDate "2021.04.17"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "CZE"]
[SourceTitle "CBM 201 Extra"]
[Source "ChessBase"]
[SourceDate "2021.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.05.31"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Nf3 d6 4. Bc4 h6 5. d4 g5 6. 0-0 Bg7 7. Nc3 Nc6 8. Bb5 Bd7 9. Bxc6 Bxc6 10. d5 Bd7 11. Re1 Bg4 12. Qd3 Bxf3 13. Qxf3 Ne7 14. Qd3 Ng6 15. Qb5+ Qd7 16. Qxb7 0-0 17. Qc6 Qxc6 18. dxc6 Bxc3 19. bxc3 Ne5 20. Rb1 Rfb8 21. Ba3 Nxc6 22. Kf2 Ne5 23. Rb3 Nc4 24. Bc1 Rb6 25. Rd1 Re8 26. Rd4 Ne5 27. Ba3 Nc6 28. Ra4 a5 29. Rxb6 cxb6 30. Bxd6 b5 31. Ra3 Rxe4 32. Bc7 a4 33. Kf3 Rc4 34. Bd6 f5 35. Ke2 Kf7 36. Kd3 Ke6 37. Bf8 h5 38. h3 g4 39. Bg7 f3 40. gxf3 gxh3 41. Bd4 h2 0-1

[Event "CZE-ch Betsys Online Blitz"]
[Site "Chess.com INT"]
[Date "2021.04.17"]
[Round "3"]
[White "Burdalev, Kirill"]
[Black "Mach, Ondrej"]
[Result "1-0"]
[ECO "A62"]
[WhiteElo "2359"]
[BlackElo "1824"]
[PlyCount "71"]
[EventDate "2021.04.17"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "CZE"]
[SourceTitle "CBM 201 Extra"]
[Source "ChessBase"]
[SourceDate "2021.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. Nf3 g6 7. g3 Bg7 8. Bg2 0-0 9. 0-0 Na6 10. Bf4 Nc7 11. a4 b6 12. Re1 Bb7 13. e4 a6 14. Qd3 Qd7 15. Bf1 b5 16. axb5 axb5 17. Rad1 c4 18. Qc2 Na6 19. e5 dxe5 20. Nxe5 Qd8 21. Nc6 Bxc6 22. dxc6 Qb6 23. Be3 Qc7 24. Bg2 b4 25. Nb5 Qa5 26. Qxc4 Rac8 27. Nd6 Rc7 28. Nb7 Qa4 29. Ra1 Qxa1 30. Rxa1 Nb8 31. Bf4 Rcc8 32. Bxb8 Rxb8 33. c7 Rbc8 34. Nd6 Ra8 35. Rxa8 Rxa8 36. Bxa8 1-0

[Event "CZE-ch Betsys Online Blitz"]
[Site "Chess.com INT"]
[Date "2021.04.17"]
[Round "2"]
[White "Handlovsky, Jachym"]
[Black "Mach, Ondrej"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "1268"]
[BlackElo "1824"]
[PlyCount "114"]
[EventDate "2021.04.17"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "CZE"]
[SourceTitle "CBM 201 Extra"]
[Source "ChessBase"]
[SourceDate "2021.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.05.31"]
[SourceQuality "1"]

1. e4 c6 2. Nf3 d5 3. exd5 cxd5 4. d4 Nc6 5. Nc3 Bg4 6. Be2 e6 7. Bf4 Bd6 8. Bg3 Bxg3 9. fxg3 Qb6 10. Na4 Qb4+ 11. c3 Qa5 12. 0-0 Nge7 13. Ne5 Bxe2 14. Nxc6 bxc6 15. Qb3 Bxf1 16. Rxf1 0-0 17. Nc5 Rfb8 18. Qc2 Qxa2 19. Qf2 Rxb2 20. Qxf7+ Kh8 21. Qf3 Rb1 22. Nxe6 Rxf1+ 23. Qxf1 Ng6 24. Qf7 Rg8 25. Qf2 Qb1+ 26. Qf1 Qxf1+ 27. Kxf1 a5 28. Nc5 Rb8 29. Ke2 Rb2+ 30. Kd3 Rxg2 31. c4 dxc4+ 32. Kxc4 Rxh2 33. Na6 Rg2 34. Kc5 Rxg3 35. Kxc6 a4 36. Nb4 a3 37. Kc5 Rb3 38. d5 Rxb4 39. d6 a2 40. d7 Rb8 41. Kc6 a1Q 42. Kc7 Qa7+ 43. Kd6 Qxd7+ 44. Kxd7 Kg8 45. Kc7 Re8 46. Kd7 Kf7 47. Kd6 h6 48. Kd5 h5 49. Kd4 h4 50. Kd5 h3 51. Kd6 h2 52. Kd5 h1Q+ 53. Kd4 Qd1+ 54. Kc3 Qd7 55. Kb4 Rc8 56. Ka5 Qb7 57. Ka4 Ra8# 0-1

[Event "CZE-ch Betsys Online Blitz"]
[Site "Chess.com INT"]
[Date "2021.04.17"]
[Round "10"]
[White "Hosova, Sandra"]
[Black "Mach, Ondrej"]
[Result "0-1"]
[ECO "C38"]
[WhiteElo "1379"]
[BlackElo "1824"]
[PlyCount "76"]
[EventDate "2021.04.17"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "CZE"]
[SourceTitle "CBM 201 Extra"]
[Source "ChessBase"]
[SourceDate "2021.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.05.31"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Nf3 d6 4. Bc4 h6 5. 0-0 g5 6. d4 Bg7 7. c3 Nc6 8. Nbd2 Nf6 9. a3 0-0 10. Qc2 a6 11. b4 b5 12. Bd3 Nd7 13. Bb2 Nb6 14. Rae1 f6 15. Qb3+ Kh8 16. Qc2 d5 17. e5 fxe5 18. Nxe5 Nxe5 19. dxe5 Nc4 20. Nxc4 dxc4 21. Bh7 c5 22. bxc5 Qe7 23. Qe4 Bb7 24. Qd4 Kxh7 25. Kh1 Rad8 26. Qf2 Rd5 27. Qc2+ Kh8 28. Qg6 Qxc5 29. Rf3 Rxe5 30. Rxe5 Qxe5 31. Rf1 Qe2 32. Rg1 Qxb2 33. h3 Qxc3 34. h4 Qf6 35. Qh5 f3 36. hxg5 fxg2+ 37. Kh2 Qf4+ 38. Kh3 Bc8+ 0-1

[Event "CZE-ch Betsys Online Blitz"]
[Site "Chess.com INT"]
[Date "2021.04.17"]
[Round "7"]
[White "Mach, Ondrej"]
[Black "Hajek, Petr"]
[Result "1-0"]
[ECO "D06"]
[WhiteElo "1824"]
[PlyCount "29"]
[EventDate "2021.04.17"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "CZE"]
[SourceTitle "CBM 201 Extra"]
[Source "ChessBase"]
[SourceDate "2021.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.05.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 Nf6 3. cxd5 Nxd5 4. e4 Nf6 5. Nc3 e5 6. d5 Bb4 7. Qa4+ Bd7 8. Qxb4 c6 9. Qxb7 cxd5 10. Qxa8 0-0 11. Qxa7 dxe4 12. Be3 Nc6 13. Qb6 Qe7 14. Bc5 Qe6 15. Bxf8 1-0

[Event "CZE-ch Betsys Online Blitz"]
[Site "Chess.com INT"]
[Date "2021.04.17"]
[Round "6"]
[White "Mach, Ondrej"]
[Black "Hlavicka, Roman"]
[Result "0-1"]
[ECO "E71"]
[WhiteElo "1824"]
[PlyCount "88"]
[EventDate "2021.04.17"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "CZE"]
[SourceTitle "CBM 201 Extra"]
[Source "ChessBase"]
[SourceDate "2021.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 0-0 6. Be3 Nbd7 7. g4 e5 8. d5 c6 9. Nge2 cxd5 10. cxd5 a6 11. Ng3 Nc5 12. f3 b5 13. b4 Ncd7 14. Be2 Nb6 15. 0-0 Nc4 16. Bxc4 bxc4 17. Na4 Bd7 18. Nb6 Rb8 19. Nxd7 Qxd7 20. a3 Qb5 21. Ne2 Rfc8 22. Nc3 Qd7 23. Qe2 Ne8 24. Rfc1 Nc7 25. Rc2 Nb5 26. Nd1 Rc7 27. a4 Na7 28. Rxc4 Rxc4 29. Qxc4 Qb7 30. Nc3 Nc8 31. b5 axb5 32. Nxb5 Bf8 33. Kg2 Nb6 34. Qc6 Nxa4 35. Qxb7 Rxb7 36. Nxd6 Bxd6 37. Rxa4 Rb3 38. Ba7 Rb2+ 39. Kg3 Bb4 40. Ra1 g5 41. h4 Bc3 42. Rc1 Bd2 43. Rd1 Bf4+ 44. Kh3 Rh2# 0-1

[Event "CZE-ch Betsys Online Blitz"]
[Site "Chess.com INT"]
[Date "2021.04.17"]
[Round "1"]
[White "Mach, Ondrej"]
[Black "Navara, David"]
[Result "0-1"]
[ECO "E15"]
[WhiteElo "1824"]
[BlackElo "2697"]
[PlyCount "36"]
[EventDate "2021.04.17"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "CZE"]
[SourceTitle "CBM 201 Extra"]
[Source "ChessBase"]
[SourceDate "2021.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6 5. b3 Bb4+ 6. Bd2 Be7 7. Bg2 0-0 8. 0-0 d5 9. Ne5 Bb7 10. Qc2 c5 11. dxc5 bxc5 12. cxd5 exd5 13. Be3 Qc7 14. Bf4 g5 15. Ng6 gxf4 16. Nxf8 Bxf8 17. gxf4 Qxf4 18. Kh1 Ng4 0-1

[Event "CZE-ch Betsys Online Blitz"]
[Site "Chess.com INT"]
[Date "2021.04.17"]
[Round "9"]
[White "Mach, Ondrej"]
[Black "Novak, Pavel2"]
[Result "1-0"]
[ECO "D10"]
[WhiteElo "1824"]
[BlackElo "1419"]
[PlyCount "99"]
[EventDate "2021.04.17"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "CZE"]
[SourceTitle "CBM 201 Extra"]
[Source "ChessBase"]
[SourceDate "2021.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.05.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 Bf5 5. cxd5 cxd5 6. Qb3 e6 7. Qxb7 Nbd7 8. Qb3 Rb8 9. Qd1 Be7 10. Nf3 0-0 11. Be2 a5 12. 0-0 Qc8 13. Nh4 Be4 14. f3 Bg6 15. Nxg6 hxg6 16. Na4 Bb4 17. Bd2 Qb7 18. Bxb4 Qxb4 19. b3 Nb6 20. Nxb6 Qxb6 21. Qd3 Rfc8 22. Rfc1 Qb7 23. Qa6 Rxc1+ 24. Rxc1 Qxa6 25. Bxa6 Ra8 26. Bb5 Rb8 27. Ba4 Kh7 28. Kf2 Kh6 29. Rc5 Ra8 30. Rc7 Rf8 31. Ra7 Rc8 32. Rxa5 Rc2+ 33. Kg3 Nh5+ 34. Kh3 Rxa2 35. Ra7 f6 36. Re7 e5 37. dxe5 fxe5 38. Rxe5 Nf6 39. Bc6 Rd2 40. b4 d4 41. exd4 Rxd4 42. b5 Rd3 43. b6 Nh5 44. Rb5 Nf4+ 45. Kg3 Nh5+ 46. Kf2 Rd2+ 47. Ke3 Rd8 48. b7 Rb8 49. Re5 Nf6 50. Ra5 1-0

[Event "CZE-ch Betsys Online Blitz"]
[Site "Chess.com INT"]
[Date "2021.04.17"]
[Round "13"]
[White "Mach, Ondrej"]
[Black "Paulus, Vaclav"]
[Result "0-1"]
[ECO "A58"]
[WhiteElo "1824"]
[BlackElo "2060"]
[PlyCount "46"]
[EventDate "2021.04.17"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "CZE"]
[SourceTitle "CBM 201 Extra"]
[Source "ChessBase"]
[SourceDate "2021.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 g6 6. Nc3 Bg7 7. e4 Qa5 8. Qd2 0-0 9. Nf3 Bxa6 10. Bxa6 Qxa6 11. Qe2 d6 12. Nd2 Qxe2+ 13. Nxe2 Na6 14. 0-0 Nb4 15. a3 Rfb8 16. f3 Nd3 17. Ra2 Nd7 18. b3 Nxc1 19. Rxc1 Ne5 20. a4 Nd3 21. Nc3 Nxc1 22. Rc2 Bxc3 23. Rxc3 Ne2+ 0-1

[Event "CZE-ch Betsys Online Blitz"]
[Site "Chess.com INT"]
[Date "2021.04.17"]
[Round "4"]
[White "Mach, Ondrej"]
[Black "Stein, Michael1"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "1824"]
[BlackElo "1115"]
[PlyCount "59"]
[EventDate "2021.04.17"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "CZE"]
[SourceTitle "CBM 201 Extra"]
[Source "ChessBase"]
[SourceDate "2021.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 Bb4 6. e3 0-0 7. Bd3 h6 8. Bh4 Be6 9. f3 Nc6 10. Nge2 a6 11. 0-0 Re8 12. a3 Ba5 13. b4 Bb6 14. Nf4 Kh8 15. Bc2 g5 16. Nxe6 Rxe6 17. Bf2 a5 18. Qd3 axb4 19. Nxd5 Qxd5 20. Bb3 Qd7 21. Bxe6 fxe6 22. axb4 Rxa1 23. Rxa1 Nxb4 24. Qg6 Qg7 25. Ra8+ Ng8 26. Qxe6 Kh7 27. Bg3 Nc6 28. d5 Nb4 29. Be5 Qe7 30. Qxg8# 1-0

[Event "CZE-ch Betsys Online Blitz"]
[Site "Chess.com INT"]
[Date "2021.04.17"]
[Round "12"]
[White "Mach, Ondrej"]
[Black "Tesar, Patrik"]
[Result "1-0"]
[ECO "D16"]
[WhiteElo "1824"]
[BlackElo "2139"]
[PlyCount "101"]
[EventDate "2021.04.17"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "CZE"]
[SourceTitle "CBM 201 Extra"]
[Source "ChessBase"]
[SourceDate "2021.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.05.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. e3 Be6 4. Nc3 c6 5. Nf3 Nf6 6. a4 g6 7. Ne5 Bg7 8. Bxc4 Bxc4 9. Nxc4 0-0 10. 0-0 Nbd7 11. b4 Nb6 12. Qd3 e6 13. e4 Nh5 14. e5 Qh4 15. Nd6 Rab8 16. Nce4 Nd5 17. Bg5 Nhf4 18. Qf3 Qh5 19. Qxh5 Nxh5 20. Nc5 f6 21. exf6 Bxf6 22. Bd2 Bxd4 23. Nd7 Bxa1 24. Nxb8 Rxb8 25. Rxa1 Nhf6 26. Re1 Nc7 27. Bf4 Nfd5 28. Bd2 b5 29. a5 Kf8 30. Rc1 Ke7 31. Ne4 Nf6 32. Nxf6 Kxf6 33. Rxc6 Nd5 34. g3 h5 35. h4 Kf5 36. Kg2 Rd8 37. Be3 Nxb4 38. Rc5+ Nd5 39. Rxb5 a6 40. Rc5 Ke4 41. Bg5 Rb8 42. Rc6 Kf5 43. Rxa6 Rb2 44. Rd6 Ra2 45. a6 Ra4 46. Be3 Nxe3+ 47. fxe3 Ra2+ 48. Kf3 Ra3 49. Rb6 e5 50. Rc6 Ra2 51. e4# 1-0

[Event "CZE-ch Betsys Online Blitz"]
[Site "Chess.com INT"]
[Date "2021.04.17"]
[Round "5"]
[White "Pisk, Petr"]
[Black "Mach, Ondrej"]
[Result "1-0"]
[ECO "C77"]
[WhiteElo "2331"]
[BlackElo "1824"]
[PlyCount "51"]
[EventDate "2021.04.17"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "CZE"]
[SourceTitle "CBM 201 Extra"]
[Source "ChessBase"]
[SourceDate "2021.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.05.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d4 Nxe4 6. Qe2 d5 7. Nxe5 b5 8. Nxc6 Qf6 9. Bb3 Qxc6 10. f3 Bf5 11. fxe4 Bxe4 12. Nd2 0-0-0 13. Nxe4 dxe4 14. Be3 f5 15. 0-0-0 a5 16. a3 b4 17. a4 g6 18. g3 Bg7 19. Qc4 Qb6 20. Kb1 Rd6 21. Rd2 Rhd8 22. Rhd1 Qb7 23. Bf4 R6d7 24. d5 Qa7 25. d6 c5 26. Rd5 1-0

[Event "CZE-ch Betsys Online Blitz"]
[Site "Chess.com INT"]
[Date "2021.04.17"]
[Round "8"]
[White "Plicka, Petr"]
[Black "Mach, Ondrej"]
[Result "1-0"]
[ECO "A14"]
[WhiteElo "1805"]
[BlackElo "1824"]
[PlyCount "55"]
[EventDate "2021.04.17"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "CZE"]
[SourceTitle "CBM 201 Extra"]
[Source "ChessBase"]
[SourceDate "2021.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.05.31"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. g3 b6 4. Bg2 Bb7 5. 0-0 Be7 6. Nc3 0-0 7. b3 c5 8. Bb2 d5 9. cxd5 exd5 10. d4 Nc6 11. e3 c4 12. h3 Na5 13. Ne5 Bd6 14. bxc4 Bxe5 15. dxe5 Nxc4 16. exf6 Nxb2 17. Qc2 Nc4 18. fxg7 Re8 19. Rfd1 Qf6 20. Nxd5 Bxd5 21. Bxd5 Ne5 22. Bxa8 Rxa8 23. Qe4 Nf3+ 24. Kg2 Nd2 25. Qxa8+ Kxg7 26. Rxd2 Qxa1 27. Qd5 Qc3 28. Qd4+ 1-0

[Event "Prague Summer op-B 3rd"]
[Site "Prague"]
[Date "2016.08.12"]
[Round "9"]
[White "Mach, Ondrej"]
[Black "Hajek, Jiri"]
[Result "0-1"]
[ECO "D46"]
[WhiteElo "1734"]
[BlackElo "1829"]
[PlyCount "46"]
[EventDate "2016.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 5. Nf3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3 Bd6 9. 0-0 0-0 10. e4 e5 11. dxe5 Nxe5 12. Nxe5 Bxe5 13. Be3 Ng4 14. g3 Nxe3 15. fxe3 Qg5 16. Qf3 Bg4 17. Qf2 Rad8 18. Bc2 Rd6 19. Bd1 Bh3 20. Re1 Rf6 21. Qd2 Bxg3 22. hxg3 Qxg3+ 23. Kh1 Rf2 0-1

[Event "Prague Summer op-B 3rd"]
[Site "Prague"]
[Date "2016.08.10"]
[Round "7"]
[White "Mach, Ondrej"]
[Black "Sprenar, Petr"]
[Result "0-1"]
[ECO "E12"]
[WhiteElo "1734"]
[BlackElo "1841"]
[PlyCount "50"]
[EventDate "2016.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Nc3 Bb7 5. a3 d5 6. cxd5 Nxd5 7. Qc2 Nxc3 8. bxc3 Be7 9. e4 0-0 10. Bd3 h6 11. g4 Nd7 12. Rg1 g5 13. h4 Kg7 14. Qd2 f6 15. Qa2 Nc5 16. Bc2 Nxe4 17. Qxe6 Re8 18. Qf5 Bb4 19. Kf1 Bxc3 20. h5 Kh8 21. Rb1 Qe7 22. Rb3 Nd6 23. Qg6 Qe2+ 24. Kg2 Qxf3+ 25. Kh2 Qxf2+ 0-1

[Event "Prague Summer op-B 3rd"]
[Site "Prague"]
[Date "2016.08.09"]
[Round "6"]
[White "Melkevik, Egil"]
[Black "Mach, Ondrej"]
[Result "0-1"]
[ECO "C78"]
[WhiteElo "1821"]
[BlackElo "1734"]
[PlyCount "124"]
[EventDate "2016.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 b5 6. Bb3 Bc5 7. c3 0-0 8. 0-0 d6 9. Nbd2 Be6 10. Bc2 h6 11. Qe2 Nh7 12. Re1 f5 13. d4 exd4 14. cxd4 Nxd4 15. Nxd4 Bxd4 16. exf5 Bxf5 17. Nf3 Bb6 18. Bxf5 Rxf5 19. Qe4 Rf8 20. Be3 Bxe3 21. Rxe3 Nf6 22. Qe6+ Kh8 23. Ng5 Qd7 24. Rd1 Qxe6 25. Nxe6 Rfe8 26. Nxc7 Rxe3 27. fxe3 Rc8 28. Nxa6 Rc2 29. b4 Nd5 30. e4 Nf4 31. Rf1 Rxg2+ 32. Kh1 Rxa2 33. Rxf4 Rxa6 34. Rf8+ Kh7 35. Rb8 Ra1+ 36. Kg2 Ra2+ 37. Kf3 Rxh2 38. Rxb5 Rb2 39. Rb6 Kg8 40. Rb7 h5 41. b5 h4 42. Kg4 g5 43. b6 Rg2+ 44. Kh5 h3 45. Kg6 Kf8 46. Rf7+ Ke8 47. b7 Rb2 48. Rh7 g4 49. Kg5 Rxb7 50. Rh8+ Ke7 51. Kxg4 Rb4 52. Kxh3 Rxe4 53. Kg2 Rf4 54. Kg3 Rf7 55. Ra8 Ke6 56. Re8+ Kd5 57. Kg2 Kd4 58. Kg3 d5 59. Kg2 Kd3 60. Rd8 d4 61. Kg3 Ke3 62. Re8+ Kd2 0-1

[Event "Prague Summer op-B 3rd"]
[Site "Prague"]
[Date "2016.08.07"]
[Round "3"]
[White "Mach, Ondrej"]
[Black "Blazquez Criado, Sergio"]
[Result "1/2-1/2"]
[ECO "A52"]
[WhiteElo "1734"]
[BlackElo "1932"]
[PlyCount "90"]
[EventDate "2016.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Bf4 Bb4+ 5. Nd2 d6 6. a3 dxe5 7. Bg3 Bxd2+ 8. Qxd2 Qxd2+ 9. Kxd2 Nc6 10. f3 Nf6 11. b4 Nh5 12. Bf2 Be6 13. e4 0-0-0+ 14. Kc3 Rd7 15. Ne2 Rhd8 16. Nc1 Nd4 17. Nb3 Nxb3 18. Kxb3 Nf4 19. g3 Ng6 20. Kc3 Ne7 21. b5 b6 22. Be2 Bh3 23. Rhg1 Rd2 24. Rge1 Bg2 25. Be3 R2d6 26. Rad1 Ng6 27. Rxd6 Rxd6 28. Rg1 Bh3 29. g4 Nf4 30. Bxf4 exf4 31. Rd1 Rxd1 32. Bxd1 Bf1 33. Kd4 Kd7 34. a4 Kd6 35. e5+ Kd7 36. c5 g5 37. cxb6 cxb6 38. Bb3 Ke7 39. Bc4 Bg2 40. Ke4 h6 41. Be2 Ke6 42. Kd4 Bh1 43. Bc4+ Ke7 44. Ke4 Bg2 45. Be2 Ke6 1/2-1/2

[Event "Prague Summer op-B 3rd"]
[Site "Prague"]
[Date "2016.08.07"]
[Round "4"]
[White "Reshetov, Valery"]
[Black "Mach, Ondrej"]
[Result "1-0"]
[ECO "C55"]
[WhiteElo "2099"]
[BlackElo "1734"]
[PlyCount "43"]
[EventDate "2016.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Qe2 Be7 5. d4 d6 6. d5 Nb8 7. Bd3 Bg4 8. c4 Na6 9. Nc3 Nc5 10. Bc2 a5 11. a3 Bd7 12. 0-0 0-0 13. Be3 Ne8 14. Bxc5 dxc5 15. Nxe5 Bc8 16. Nf3 c6 17. e5 cxd5 18. cxd5 Qb6 19. d6 Bd8 20. Nd5 Qa7 21. Ne7+ Kh8 22. Nxc8 1-0

[Event "Prague Summer op-B 3rd"]
[Site "Prague"]
[Date "2016.08.06"]
[Round "2"]
[White "Gonsior, Monika"]
[Black "Mach, Ondrej"]
[Result "1/2-1/2"]
[ECO "C27"]
[WhiteElo "1960"]
[BlackElo "1734"]
[PlyCount "74"]
[EventDate "2016.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. Bc4 Nxe4 4. Qh5 Nd6 5. Bb3 Be7 6. Qxe5 0-0 7. Nge2 Bf6 8. Qf4 g6 9. 0-0 Nf5 10. Nd5 c6 11. Nxf6+ Qxf6 12. g4 Qe7 13. gxf5 Qxe2 14. fxg6 hxg6 15. d3 d5 16. Bd2 Qg4+ 17. Qg3 Na6 18. Rfe1 Qxg3+ 19. fxg3 Be6 20. d4 Rfe8 21. Bf4 Nb8 22. c3 Nd7 23. Bc2 Bg4 24. Kg2 Re6 25. Rxe6 Bxe6 26. Re1 Re8 27. g4 Nf6 28. h3 Ne4 29. Kf3 Bxg4+ 30. hxg4 Ng5+ 31. Bxg5 Rxe1 32. Bd2 Ra1 33. a3 Ra2 34. Bc1 Ra1 35. Be3 Ra2 36. Bc1 Ra1 37. Be3 Ra2 1/2-1/2

[Event "Hradec Kralove op"]
[Site "Hradec Kralove"]
[Date "2013.05.19"]
[Round "7"]
[White "Mach, Ondrej"]
[Black "Ostrowski, Michal"]
[Result "1-0"]
[ECO "A59"]
[WhiteElo "1765"]
[BlackElo "1431"]
[PlyCount "79"]
[EventDate "2013.05.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 Bxa6 6. Nc3 d6 7. e4 Bxf1 8. Kxf1 g6 9. Nf3 Bg7 10. g3 0-0 11. Kg2 Nbd7 12. Nd2 Ng4 13. Qxg4 Ne5 14. Qd1 Nd3 15. Nf3 Nxc1 16. Qxc1 Qd7 17. Rf1 h5 18. h4 f6 19. Qc2 Kh7 20. Nh2 Rab8 21. f4 f5 22. Nf3 Bf6 23. e5 dxe5 24. fxe5 Bg7 25. Ng5+ Kh8 26. Ne6 Bxe5 27. Nxf8 Rxf8 28. Rad1 Qd6 29. Ne2 Kg7 30. Nf4 Bxf4 31. Rxf4 Rb8 32. Rc4 Qe5 33. Qc3 Rxb2+ 34. Kh3 Qxc3 35. Rxc3 Rxa2 36. Rxc5 Re2 37. d6 exd6 38. Rxd6 Re3 39. Rc7+ Kh6 40. Rd8 1-0

[Event "Hradec Kralove op"]
[Site "Hradec Kralove"]
[Date "2013.05.19"]
[Round "6"]
[White "Nemcova, Karin"]
[Black "Mach, Ondrej"]
[Result "1-0"]
[ECO "C45"]
[WhiteElo "1659"]
[BlackElo "1765"]
[PlyCount "43"]
[EventDate "2013.05.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 154 Extra"]
[Source "ChessBase"]
[SourceDate "2013.06.25"]
[SourceVersion "2"]
[SourceVersionDate "2013.06.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Qh4 5. Nc3 Bb4 6. Be2 Nf6 7. Ndb5 Ba5 8. 0-0 Nxe4 9. Nd5 Qd8 10. Bf3 Nc5 11. Qe2+ Ne6 12. Nf4 0-0 13. Nxe6 fxe6 14. Bd2 Bb6 15. Be3 Ne5 16. Be4 d5 17. Bxb6 axb6 18. Bxh7+ Kxh7 19. Qxe5 c5 20. Nc7 Ra5 21. Nxe6 Re8 22. Qxg7# 1-0

[Event "Hradec Kralove op"]
[Site "Hradec Kralove"]
[Date "2013.05.17"]
[Round "3"]
[White "Mach, Ondrej"]
[Black "Sedivy, Martin"]
[Result "1/2-1/2"]
[ECO "A52"]
[WhiteElo "1765"]
[BlackElo "1989"]
[PlyCount "77"]
[EventDate "2013.05.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 154 Extra"]
[Source "ChessBase"]
[SourceDate "2013.06.25"]
[SourceVersion "2"]
[SourceVersionDate "2013.06.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Bf4 Nc6 5. Nf3 Bb4+ 6. Nc3 Qe7 7. Qd5 Bxc3+ 8. bxc3 f6 9. exf6 Nxf6 10. Qd2 d6 11. Nd4 0-0 12. Bg5 Ne5 13. Bxf6 Qxf6 14. e3 Be6 15. Nxe6 Qxe6 16. Qd5 Qxd5 17. cxd5 Ng4 18. f3 Nxe3 19. Kf2 Rae8 20. Bb5 Re5 21. Rhe1 Nxd5 22. Bc4 c6 23. Rad1 Rxe1 24. Bxd5+ cxd5 25. Rxe1 Rc8 26. Re7 Rxc3 27. Rxb7 Rc2+ 28. Kg3 Rxa2 29. Rd7 Ra6 30. Kf4 h6 31. Kf5 Kh7 32. h3 Ra2 33. g4 Ra3 34. f4 Rxh3 35. Rxa7 Re3 36. Rd7 Kg8 37. Rxd6 Kf7 38. Rd7+ Re7 39. Rxe7+ 1/2-1/2

[Event "Hradec Kralove op"]
[Site "Hradec Kralove"]
[Date "2013.05.17"]
[Round "4"]
[White "Majerik, Vladimir"]
[Black "Mach, Ondrej"]
[Result "1-0"]
[ECO "D13"]
[WhiteElo "1919"]
[BlackElo "1765"]
[PlyCount "33"]
[EventDate "2013.05.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 154 Extra"]
[Source "ChessBase"]
[SourceDate "2013.06.25"]
[SourceVersion "2"]
[SourceVersionDate "2013.06.25"]
[SourceQuality "1"]

1. d4 c5 2. c3 cxd4 3. cxd4 d5 4. Nf3 Nc6 5. Nc3 Nf6 6. a3 e6 7. Bg5 Be7 8. e3 0-0 9. Bd3 b6 10. 0-0 Bb7 11. Rc1 Rc8 12. Qe2 Na5 13. Nd2 Ne4 14. Bxe7 Nxc3 15. Bxh7+ Kh8 16. Qh5 Ne2+ 17. Kh1 1-0

[Event "Hradec Kralove op"]
[Site "Hradec Kralove"]
[Date "2013.05.15"]
[Round "1"]
[White "Mach, Ondrej"]
[Black "Meszaros, Ludek"]
[Result "0-1"]
[ECO "A59"]
[WhiteElo "1765"]
[BlackElo "2113"]
[PlyCount "56"]
[EventDate "2013.05.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 154 Extra"]
[Source "ChessBase"]
[SourceDate "2013.06.25"]
[SourceVersion "2"]
[SourceVersionDate "2013.06.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 Bxa6 6. Nc3 g6 7. e4 Bxf1 8. Kxf1 d6 9. f4 Bg7 10. Nf3 0-0 11. Qc2 Na6 12. a3 Nc7 13. Kf2 e6 14. dxe6 Nxe6 15. Rd1 Nd4 16. Nxd4 cxd4 17. Nd5 Nxd5 18. exd5 Qh4+ 19. Kg1 Rfe8 20. Qf2 Qh5 21. Bd2 Qxd5 22. Bc3 Re4 23. Rd3 Qc4 24. Qf3 dxc3 25. b3 Qc5+ 26. Kf1 Rae8 27. b4 Qc4 28. Kf2 Rxf4 0-1

[Event "Hradec Kralove op"]
[Site "Hradec Kralove"]
[Date "2012.05.18"]
[Round "8"]
[White "Svoboda, Frantisek"]
[Black "Mach, Ondrej"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "1795"]
[PlyCount "37"]
[EventDate "2012.05.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 148 Extra"]
[Source "ChessBase"]
[SourceDate "2012.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.06.22"]
[SourceQuality "1"]

1. Nc3 Nf6 2. e4 d6 3. d4 g6 4. Be3 Bg7 5. Qd2 0-0 6. Bh6 c5 7. d5 e6 8. 0-0-0 exd5 9. exd5 Qb6 10. f3 Na6 11. h4 Nc7 12. Bxg7 Kxg7 13. g4 Bd7 14. h5 Rh8 15. h6+ Kf8 16. Qf4 Ng8 17. Nh3 Ne7 18. Qf6 Rg8 19. Ng5 1-0

[Event "Hradec Kralove op"]
[Site "Hradec Kralove"]
[Date "2012.05.13"]
[Round "2"]
[White "Gorbatov, Alexej"]
[Black "Mach, Ondrej"]
[Result "1-0"]
[ECO "B38"]
[WhiteElo "2363"]
[PlyCount "65"]
[EventDate "2012.05.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 148 Extra"]
[Source "ChessBase"]
[SourceDate "2012.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.06.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Be3 Nf6 7. Nc3 0-0 8. Be2 d6 9. Rc1 Nxd4 10. Bxd4 Be6 11. 0-0 Rc8 12. b3 b6 13. f3 Rc6 14. Qd2 Qb8 15. Nd5 Bxd5 16. cxd5 Rxc1 17. Rxc1 Rc8 18. Be3 Rc7 19. Ba6 Nd7 20. b4 Qd8 21. a4 Nb8 22. Bb5 Qc8 23. Rxc7 Qxc7 24. Kf1 Nd7 25. Ke2 Ne5 26. h3 Kf8 27. Qc1 Qb7 28. f4 Nd7 29. Qc6 Qb8 30. Qxd7 Bc3 31. Bd2 Bd4 32. Kd3 Bb2 33. Ba6 1-0

