[Event "EU-ch Rapid"]
[Site "Katowice"]
[Date "2021.12.19"]
[Round "11"]
[White "Lach, Mateusz"]
[Black "Sliwicki, Damian"]
[Result "0-1"]
[ECO "E12"]
[WhiteElo "1661"]
[BlackElo "2168"]
[PlyCount "62"]
[EventDate "2021.12.18"]
[EventType "swiss (rapid)"]
[EventRounds "11"]
[EventCountry "POL"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. e3 b6 4. Nc3 Bb7 5. a3 d5 6. Nf3 Bd6 7. b4 0-0 8. c5 Be7 9. Ne5 Nfd7 10. Nxd7 Nxd7 11. f4 Bh4+ 12. g3 Bf6 13. Bd3 bxc5 14. bxc5 Nxc5 15. a4 Nxd3+ 16. Qxd3 c5 17. Ba3 Qa5 18. Bxc5 Rfc8 19. Rc1 Rxc5 20. dxc5 d4 21. e4 dxc3 22. e5 Bxh1 23. exf6 c2+ 24. Qd2 Qxd2+ 25. Kxd2 Be4 26. Ke3 Bg6 27. Kd4 Rd8+ 28. Kc4 Rd1 29. c6 Bd3+ 30. Kb4 Rxc1 31. Ka5 Rb1 0-1

[Event "EU-ch Rapid"]
[Site "Katowice"]
[Date "2021.12.18"]
[Round "5"]
[White "Helis, Tadeusz"]
[Black "Lach, Mateusz"]
[Result "1/2-1/2"]
[ECO "A94"]
[WhiteElo "2112"]
[BlackElo "1661"]
[PlyCount "73"]
[EventDate "2021.12.18"]
[EventType "swiss (rapid)"]
[EventRounds "11"]
[EventCountry "POL"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. Nf3 e6 2. c4 f5 3. g3 Nf6 4. Bg2 c6 5. 0-0 d5 6. d4 Bd6 7. b3 0-0 8. Ba3 Bxa3 9. Nxa3 Nbd7 10. e3 a6 11. Qc2 b5 12. cxd5 cxd5 13. Rac1 Bb7 14. Qb2 Qb6 15. Rc2 Rac8 16. Rfc1 Rxc2 17. Nxc2 Rc8 18. Nce1 Rxc1 19. Qxc1 Qc6 20. Qxc6 Bxc6 21. Nd3 Ne4 22. Nfe5 Nxe5 23. Nxe5 Be8 24. Bxe4 fxe4 25. b4 h5 26. Kg2 g5 27. f3 Kg7 28. fxe4 dxe4 29. a3 Kf6 30. h3 Kg7 31. Kf2 Kf6 32. Ke2 Ke7 33. Kd2 Kd6 34. Kc3 Kd5 35. Kb3 Kd6 36. h4 g4 37. Kc3 1/2-1/2

[Event "EU-ch Rapid"]
[Site "Katowice"]
[Date "2021.12.18"]
[Round "6"]
[White "Lach, Mateusz"]
[Black "Ortega Ruiz, Jose Miguel"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "1661"]
[BlackElo "2314"]
[PlyCount "54"]
[EventDate "2021.12.18"]
[EventType "swiss (rapid)"]
[EventRounds "11"]
[EventCountry "POL"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. e3 cxd4 4. exd4 d5 5. Nf3 Nc6 6. Nc3 Bg4 7. Be3 e6 8. a3 dxc4 9. Bxc4 Bd6 10. Bb5 0-0 11. Bxc6 bxc6 12. Bg5 Be7 13. Be3 Qb6 14. b4 a5 15. d5 Qc7 16. dxe6 Bxe6 17. Bc5 Bxc5 18. bxc5 Bc4 19. Nd4 Rfe8+ 20. Kd2 Rad8 21. Kc2 Qe5 22. Re1 Qxd4 23. Rxe8+ Nxe8 24. Qxd4 Rxd4 25. Re1 Kf8 26. a4 Nc7 27. Re4 Bd3+ 0-1

[Event "EU-ch Blitz"]
[Site "Katowice"]
[Date "2021.12.17"]
[Round "1"]
[White "Gumularz, Szymon"]
[Black "Lach, Mateusz"]
[Result "1-0"]
[ECO "C10"]
[WhiteElo "2539"]
[BlackElo "1661"]
[PlyCount "67"]
[EventDate "2021.12.17"]
[EventType "swiss (blitz)"]
[EventRounds "22"]
[EventCountry "POL"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Be7 5. Nf3 Nf6 6. Bd3 Nbd7 7. 0-0 Nxe4 8. Bxe4 Nf6 9. Bd3 0-0 10. Qe2 h6 11. Bf4 b6 12. Rad1 Bb7 13. c3 Qc8 14. c4 c5 15. d5 Bd8 16. dxe6 Qxe6 17. Qxe6 fxe6 18. Bd6 Bxf3 19. gxf3 Re8 20. Bg6 Re7 21. Bxe7 Bxe7 22. Rfe1 Rd8 23. Rxd8+ Bxd8 24. Rxe6 Kf8 25. Kf1 Be7 26. Rc6 Bd8 27. Rc8 Ke7 28. Ra8 Bc7 29. Rxa7 Kd6 30. Ke2 Nd7 31. b3 Bb8 32. Rb7 Kc6 33. Be4+ Kd6 34. Bf5 1-0

[Event "EU-ch Blitz"]
[Site "Katowice"]
[Date "2021.12.17"]
[Round "2"]
[White "Lach, Mateusz"]
[Black "Gumularz, Szymon"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "1661"]
[BlackElo "2539"]
[PlyCount "62"]
[EventDate "2021.12.17"]
[EventType "swiss (blitz)"]
[EventRounds "22"]
[EventCountry "POL"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. e3 b6 4. Nc3 Bb7 5. a3 g6 6. b4 Bg7 7. Bd2 0-0 8. c5 d6 9. cxb6 axb6 10. Nf3 Nbd7 11. Be2 e5 12. dxe5 dxe5 13. 0-0 Qe7 14. h3 h6 15. Qc2 Rfd8 16. e4 Nf8 17. Be3 Nh5 18. Rfd1 Ne6 19. Nd5 Bxd5 20. exd5 Nef4 21. Bc4 Rd6 22. a4 e4 23. Nd4 Re8 24. g4 Nxh3+ 25. Kf1 N5f4 26. a5 Qh4 27. a6 Qxg4 28. Ke1 Ng1 29. Kd2 Nf3+ 30. Kc3 Nxd5+ 31. Bxd5 Rxd5 0-1

[Event "POL Cup op rapid"]
[Site "Lodz"]
[Date "2021.08.07"]
[Round "7"]
[White "Lach, Mateusz"]
[Black "Kubicka, Anna"]
[Result "0-1"]
[ECO "E61"]
[WhiteElo "1661"]
[BlackElo "2192"]
[PlyCount "84"]
[EventDate "2021.08.07"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[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. e3 g6 4. Nf3 Bg7 5. Nc3 0-0 6. Be2 d6 7. d5 e6 8. e4 exd5 9. exd5 Bg4 10. 0-0 Re8 11. h3 Bxf3 12. Bxf3 Nbd7 13. Bf4 Ne5 14. Bxe5 Rxe5 15. Re1 Nd7 16. Ne4 Qc7 17. Bg4 Rae8 18. Ng5 Rxe1+ 19. Qxe1 Rxe1+ 20. Rxe1 Ne5 21. b3 h6 22. Nf3 Nxf3+ 23. Bxf3 Be5 24. Re2 Qa5 25. g3 Qc3 26. Kg2 f5 27. Re3 Qa1 28. Re2 Kg7 29. Rd2 Kf6 30. Re2 a6 31. Rd2 Qc1 32. Re2 b5 33. cxb5 axb5 34. Re3 Qb1 35. Re2 c4 36. bxc4 bxc4 37. h4 c3 38. g4 c2 39. gxf5 c1Q 40. Kh3 Qh1+ 41. Bxh1 Qxh1+ 42. Kg4 h5# 0-1

[Event "POL Cup op rapid"]
[Site "Lodz"]
[Date "2021.08.07"]
[Round "2"]
[White "Lubczynski, Rafal"]
[Black "Lach, Mateusz"]
[Result "1-0"]
[ECO "E06"]
[WhiteElo "2429"]
[BlackElo "1661"]
[PlyCount "51"]
[EventDate "2021.08.07"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. Nf3 e6 2. c4 d5 3. g3 Nf6 4. Bg2 Be7 5. 0-0 0-0 6. d4 c6 7. Qc2 a6 8. Rd1 b5 9. b3 Bb7 10. Nbd2 Nbd7 11. e4 dxe4 12. Nxe4 Nxe4 13. Qxe4 Nf6 14. Qe2 Qc7 15. Bf4 Bd6 16. Ne5 c5 17. dxc5 Bxc5 18. Nd7 Qc8 19. Bxb7 Qxb7 20. Nxc5 Qc6 21. Nd3 bxc4 22. Ne5 Qb7 23. bxc4 h6 24. Rab1 Qc8 25. Qf3 Rd8 26. Bxh6 1-0

[Event "Opole Termika Rapid op"]
[Site "Opole"]
[Date "2021.07.17"]
[Round "2"]
[White "Nasuta, Grzegorz"]
[Black "Lach, Mateusz"]
[Result "1-0"]
[ECO "C01"]
[WhiteElo "2518"]
[BlackElo "1661"]
[PlyCount "121"]
[EventDate "2021.07.17"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. exd5 exd5 5. Bd3 Nf6 6. Nge2 Bg4 7. 0-0 0-0 8. Bg5 Bxc3 9. bxc3 Nbd7 10. f3 Bh5 11. Nf4 Bg6 12. Nxd5 c5 13. Re1 Qa5 14. Nxf6+ Nxf6 15. Bxf6 gxf6 16. f4 f5 17. Qf3 Qxc3 18. dxc5 Qxc5+ 19. Kh1 Qc6 20. Qxc6 bxc6 21. Re5 Rfe8 22. Rae1 Kf8 23. Kg1 f6 24. Rxe8+ Rxe8 25. Rb1 Re7 26. Rb8+ Re8 27. Rb4 Re7 28. Rc4 Re6 29. Rc5 Rd6 30. Kf2 Kg7 31. Ke3 Re6+ 32. Kd2 Rd6 33. Ra5 Rd7 34. Ra6 Rc7 35. Kc3 Bf7 36. Bxf5 Bd5 37. g3 Re7 38. Bd3 Rc7 39. Kd4 h6 40. Kc5 Rd7 41. a3 Bf3 42. Kc4 Bd5+ 43. Kc3 Bf3 44. Bf5 Rc7 45. Kd4 Be2 46. Ra5 Rb7 47. Be4 Bd1 48. c4 Rc7 49. Kc5 Kf7 50. Kd6 Re7 51. Bxc6 Bg4 52. Bd5+ Kf8 53. Rb5 Rd7+ 54. Kc5 Rc7+ 55. Kd4 Bd7 56. Rb8+ Kg7 57. Rb7 Rxb7 58. Bxb7 Kf7 59. c5 Ke7 60. c6 Bf5 61. c7 1-0

[Event "Subcarpathian-chT"]
[Site "Bystre"]
[Date "2021.06.13"]
[Round "8.10"]
[White "Drabek, Jan"]
[Black "Lach, Mateusz"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "1610"]
[BlackElo "1652"]
[PlyCount "113"]
[EventDate "2021.06.09"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 e6 2. Nc3 d5 3. Bf4 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. c4 dxc4 7. dxc5 Qa5+ 8. Bd2 Qxc5 9. Bb4 Qd5 10. e3 Nf6 11. Qe2 a5 12. Bc3 b5 13. Rd1 Qc6 14. Nf3 0-0 15. Nd4 Qd5 16. Nb3 Qf5 17. Nxa5 Nd5 18. Bb4 Nxb4 19. axb4 Na6 20. Qd2 Nc7 21. Be2 Qd5 22. Bf3 Qxd2+ 23. Rxd2 Ra7 24. 0-0 e5 25. Bc6 Be6 26. Rfd1 Na6 27. c3 Nc7 28. Rd8 g6 29. Kf1 Bf5 30. e4 Be6 31. Ke2 f5 32. Rxf8+ Kxf8 33. Rd8+ Ke7 34. Rh8 Kd6 35. Rd8+ Ke7 36. Rb8 Bd7 37. Rh8 Kd6 38. Bxd7 Kxd7 39. Rxh7+ Ke6 40. f3 Kf6 41. g4 fxg4 42. fxg4 Kg5 43. Kf3 Kf6 44. h4 g5 45. h5 Ke6 46. Rh6+ Kf7 47. Rh7+ Kg8 48. Rd7 Kh8 49. Nc6 Ra3 50. Rxc7 Rxc3+ 51. Ke2 Rc2+ 52. Ke3 Rc3+ 53. Kd2 Rg3 54. Nxe5 Rb3 55. h6 Rh3 56. Ng6+ Kg8 57. Rg7# 1-0

[Event "Subcarpathian-chT"]
[Site "Bystre"]
[Date "2021.06.13"]
[Round "9.28"]
[White "Lach, Mateusz"]
[Black "Chmura, Kamil"]
[Result "1-0"]
[ECO "D40"]
[WhiteElo "1652"]
[BlackElo "1231"]
[PlyCount "91"]
[EventDate "2021.06.09"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. e3 c5 4. Nc3 Nf6 5. Nf3 Nc6 6. dxc5 Bxc5 7. cxd5 Nxd5 8. Nxd5 Qxd5 9. Qxd5 exd5 10. a3 0-0 11. b4 Bb6 12. Bb2 Bg4 13. Ne5 Nxe5 14. Bxe5 Rfe8 15. Bf4 d4 16. f3 Bf5 17. Bb5 Re7 18. Bg5 f6 19. Bf4 dxe3 20. Bd6 Bd7 21. Bxe7 Bxb5 22. Bc5 Bxc5 23. bxc5 Kf7 24. a4 Ba6 25. Ra3 e2 26. Kf2 Rc8 27. Rc3 Ke6 28. Rhc1 Kd5 29. R3c2 Kd4 30. c6 bxc6 31. Rxc6 Rxc6 32. Rxc6 Bd3 33. Rc7 a5 34. Ke1 g5 35. Ra7 h5 36. Rxa5 h4 37. Ra8 Ke3 38. Re8+ Kf4 39. Rd8 h3 40. g3+ Ke3 41. Rxd3+ Kxd3 42. a5 Ke3 43. a6 Kxf3 44. a7 Kg2 45. Kxe2 Kxh2 46. Kf2 1-0

[Event "Subcarpathian-chT"]
[Site "Bystre"]
[Date "2021.06.12"]
[Round "7.22"]
[White "Lach, Mateusz"]
[Black "Gluch, Pawel"]
[Result "1/2-1/2"]
[ECO "E61"]
[WhiteElo "1652"]
[BlackElo "1654"]
[PlyCount "78"]
[EventDate "2021.06.09"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. e3 Bg7 4. Nc3 0-0 5. Be2 d5 6. Bd2 c6 7. c5 b6 8. b4 a5 9. a3 axb4 10. axb4 Rxa1 11. Qxa1 b5 12. f4 Bf5 13. Nf3 Nbd7 14. 0-0 Qa8 15. Qb2 Qb7 16. Ra1 Ra8 17. Ra3 Ne8 18. Qa1 Rxa3 19. Qxa3 Nc7 20. Na2 f6 21. Nc1 Bc2 22. Bd3 Bd1 23. f5 Kf7 24. Qa2 e6 25. fxe6+ Nxe6 26. Bc2 Bxc2 27. Qxc2 f5 28. Qa2 h6 29. Nb3 Bf6 30. h3 Bd8 31. Be1 Bc7 32. Nc1 Ng5 33. Nxg5+ hxg5 34. Ne2 Nf6 35. Bg3 Bxg3 36. Nxg3 g4 37. Qa5 Qb8 38. Ne2 gxh3 39. gxh3 g5 1/2-1/2

[Event "Subcarpathian-chT"]
[Site "Bystre"]
[Date "2021.06.12"]
[Round "6.16"]
[White "Wojciechowski, Beniamin"]
[Black "Lach, Mateusz"]
[Result "0-1"]
[ECO "C02"]
[WhiteElo "1842"]
[BlackElo "1652"]
[PlyCount "64"]
[EventDate "2021.06.09"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. f4 cxd4 5. Nf3 Bb4+ 6. Nbd2 Nc6 7. Bd3 g6 8. 0-0 Nge7 9. a3 Ba5 10. Qe2 Bd7 11. b4 Bb6 12. Bb2 a6 13. Kh1 Rc8 14. Nb3 Nf5 15. Rfe1 Qe7 16. g4 Ne3 17. Nfxd4 Nxd4 18. Bxd4 Bxd4 19. Nxd4 Nc4 20. Reb1 h5 21. g5 Qd8 22. Kg2 Qb6 23. Qf2 Ba4 24. h4 0-0 25. Ra2 Rc7 26. Kf1 Rfc8 27. Ke1 Qa7 28. Ke2 Nxa3 29. Rc1 Rc3 30. Qg1 Bxc2 31. Bxc2 Nxc2 32. Kd2 Nxd4 0-1

[Event "Subcarpathian-chT"]
[Site "Bystre"]
[Date "2021.06.11"]
[Round "4.22"]
[White "Gaj, Szymon"]
[Black "Lach, Mateusz"]
[Result "0-1"]
[ECO "A04"]
[WhiteElo "1838"]
[BlackElo "1652"]
[PlyCount "39"]
[EventDate "2021.06.09"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. Nf3 e6 2. g3 f5 3. Bg2 Nf6 4. 0-0 Be7 5. d3 d5 6. Nbd2 0-0 7. c3 c5 8. Qc2 Nc6 9. e4 fxe4 10. dxe4 Qc7 11. Re1 a6 12. Ng5 dxe4 13. Ndxe4 Nxe4 14. Bxe4 h6 15. Bh7+ Kh8 16. Bg8 Rf5 17. Bf4 e5 18. Ne6 Bxe6 19. Bxe6 Rf6 20. Bc1 0-1

[Event "Subcarpathian-chT"]
[Site "Bystre"]
[Date "2021.06.11"]
[Round "5.16"]
[White "Lach, Mateusz"]
[Black "Biesiadecki, Adam"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "1652"]
[BlackElo "1563"]
[PlyCount "66"]
[EventDate "2021.06.09"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. e3 Bb4+ 4. Bd2 Be7 5. Nc3 b6 6. Be2 Bb7 7. Bf3 d5 8. a3 Ne4 9. Bxe4 dxe4 10. b4 c5 11. dxc5 bxc5 12. b5 Bf6 13. Qc2 Nd7 14. Rd1 Ne5 15. Nge2 Qd3 16. Qxd3 Nxd3+ 17. Kf1 Nb2 18. Ra1 Nxc4 19. Ra2 0-0-0 20. Ke1 Rd3 21. Na4 Rhd8 22. Nxc5 Rxd2 23. Rxd2 Rxd2 24. a4 Ra2 25. Ng3 Ra1+ 26. Ke2 Ra2+ 27. Kd1 Be7 28. Nb3 Rb2 29. Nd4 Bd6 30. Nde2 Bd5 31. Kc1 Ba3 32. Kd1 Ne5 33. Nd4 Nd3 0-1

[Event "Subcarpathian-chT"]
[Site "Bystre"]
[Date "2021.06.10"]
[Round "3.10"]
[White "Lach, Mateusz"]
[Black "Ziemniak, Piotr"]
[Result "1-0"]
[ECO "E61"]
[WhiteElo "1652"]
[BlackElo "1796"]
[PlyCount "139"]
[EventDate "2021.06.09"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. e3 Bg7 4. Nc3 d6 5. Nf3 0-0 6. Be2 Nbd7 7. b4 a5 8. b5 c5 9. 0-0 Qc7 10. Bb2 b6 11. d5 Ne4 12. Qc2 Nxc3 13. Bxc3 Nf6 14. e4 Bg4 15. Ne1 Rae8 16. f3 Bc8 17. Qb2 e5 18. dxe6 fxe6 19. e5 Nh5 20. exd6 Bxc3 21. Qxc3 Qxd6 22. Rd1 Qf4 23. Qd2 Qxd2 24. Rxd2 Rd8 25. Rxd8 Rxd8 26. Nd3 Rd4 27. Rd1 Nf6 28. Ne5 Rxd1+ 29. Bxd1 Nd7 30. Nd3 Kf7 31. Kf2 Kf6 32. f4 e5 33. Bg4 e4 34. Bxd7 Bxd7 35. Ne5 Bc8 36. Ke3 Ke6 37. Kxe4 Bb7+ 38. Nc6 Kd6 39. a4 Bc8 40. Kd3 Bf5+ 41. Kc3 Be4 42. g3 Bf3 43. Kd2 Be4 44. Ne5 Ke6 45. g4 g5 46. Nd3 gxf4 47. Nxf4+ Ke5 48. Ke3 Bb7 49. Nd3+ Ke6 50. h4 Kd6 51. g5 Bc8 52. Kf4 Bd7 53. Ne5 Be6 54. h5 Ke7 55. Ke4 Kf8 56. Kf3 Ke8 57. Ke3 Kf8 58. Kd3 Bf5+ 59. Kc3 Ke8 60. Nd3 Bg4 61. Nf4 Bd1 62. g6 h6 63. Kd2 Bxa4 64. Nd5 Bb3 65. Nxb6 a4 66. Nc8 a3 67. Kc3 Bd1 68. b6 a2 69. Kb2 Bf3 70. b7 1-0

[Event "Subcarpathian-chT"]
[Site "Bystre"]
[Date "2021.06.10"]
[Round "2.28"]
[White "Szaro, Mariusz"]
[Black "Lach, Mateusz"]
[Result "1-0"]
[ECO "A80"]
[WhiteElo "1566"]
[BlackElo "1652"]
[PlyCount "103"]
[EventDate "2021.06.09"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 e6 2. Nc3 f5 3. e4 fxe4 4. Nxe4 Nf6 5. Bd3 d5 6. Nxf6+ Qxf6 7. Nf3 Bd6 8. Bg5 Qf7 9. 0-0 0-0 10. Bh4 Qh5 11. Bg3 Bxg3 12. hxg3 Rf6 13. Ne5 Qxd1 14. Raxd1 b6 15. b4 c6 16. a3 a5 17. Ra1 c5 18. c3 Nd7 19. bxc5 bxc5 20. Rab1 cxd4 21. Nxd7 Bxd7 22. cxd4 Rc8 23. Rfc1 Rff8 24. Kf1 Rxc1+ 25. Rxc1 Rc8 26. Rxc8+ Bxc8 27. Bb5 Kf7 28. Ke2 Kf6 29. f4 g5 30. Kf3 h5 31. Be8 h4 32. fxg5+ Kxg5 33. gxh4+ Kxh4 34. Kf4 Ba6 35. g3+ Kh3 36. Bd7 Bd3 37. Bxe6+ Kg2 38. Bxd5+ Kf2 39. Bc6 Ke2 40. d5 Kd2 41. d6 Kc3 42. d7 Kb2 43. a4 Ka3 44. d8Q Bc4 45. Qxa5 Bb3 46. Qc5+ Kb2 47. a5 Ka1 48. a6 Ka2 49. a7 Kb2 50. a8Q Kb1 51. Be4+ Kb2 52. Qaa3# 1-0

[Event "Krakow-ch rapid"]
[Site "Krakow"]
[Date "2018.06.17"]
[Round "8"]
[White "Golenia, Wojciech"]
[Black "Lach, Mateusz"]
[Result "1-0"]
[ECO "C01"]
[WhiteElo "1984"]
[BlackElo "1629"]
[PlyCount "43"]
[EventDate "2018.06.16"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. exd5 exd5 5. Nf3 Nf6 6. Bg5 0-0 7. Be2 Bg4 8. 0-0 c6 9. Ne5 Bxe2 10. Nxe2 Be7 11. Ng3 h6 12. Bxh6 gxh6 13. Nf5 Nbd7 14. Nxh6+ Kg7 15. Nf5+ Kh8 16. Qd2 Ng8 17. Qe3 Ndf6 18. Qg5 Ne8 19. Qh5+ Nh6 20. Nxh6 Kg7 21. Nhxf7 Nf6 22. Qg6# 1-0

[Event "Krakow-ch rapid"]
[Site "Krakow"]
[Date "2018.06.17"]
[Round "6"]
[White "Lach, Mateusz"]
[Black "Mikula, Michal"]
[Result "0-1"]
[ECO "D32"]
[WhiteElo "1629"]
[BlackElo "1803"]
[PlyCount "68"]
[EventDate "2018.06.16"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. e3 e6 4. Nc3 d5 5. Nf3 Nc6 6. dxc5 Bxc5 7. cxd5 exd5 8. Be2 Bf5 9. a3 0-0 10. b4 d4 11. exd4 Bxd4 12. Bb2 Bxf2+ 13. Kxf2 Ng4+ 14. Ke1 Qb6 15. Nd5 Qf2+ 16. Kd2 Rfd8 17. Kc1 Rac8 18. Bc3 Ne3 19. Be1 Nd4+ 20. Kb2 Qxe2+ 21. Qxe2 Nxe2 22. Nxe3 Be4 23. Bh4 Rd3 24. Rhd1 Rxe3 25. Rd8+ Rxd8 26. Bxd8 Nf4 27. Rd1 Nd3+ 28. Ka1 Re2 29. Ng5 Bg6 30. Bc7 f6 31. Nf3 Rc2 32. Bb8 Nc1 33. Kb1 Nb3 34. Rd2 Rxd2# 0-1

[Event "Krakow-ch rapid"]
[Site "Krakow"]
[Date "2018.06.16"]
[Round "4"]
[White "Lach, Mateusz"]
[Black "Golubka, Petr"]
[Result "0-1"]
[ECO "E12"]
[WhiteElo "1629"]
[BlackElo "2484"]
[PlyCount "110"]
[EventDate "2018.06.16"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. e3 b6 4. a3 d5 5. Nc3 Bb7 6. Nf3 Bd6 7. b4 dxc4 8. Bxc4 0-0 9. Bb2 Nbd7 10. 0-0 Qe7 11. Be2 Rfe8 12. Nb5 a5 13. Nxd6 cxd6 14. b5 Ne4 15. a4 Ndf6 16. Rc1 Rac8 17. Qd3 h6 18. h3 Qd7 19. Ba3 Bd5 20. Bb2 Qb7 21. Ba3 e5 22. dxe5 dxe5 23. Rfd1 Rxc1 24. Rxc1 Nd7 25. Rd1 Be6 26. Nd2 Nec5 27. Qc2 Bd5 28. f3 e4 29. f4 Nd3 30. Bxd3 exd3 31. Qxd3 Nf6 32. e4 Bxe4 33. Nxe4 Rxe4 34. Bd6 Rxa4 35. Be5 Ra2 36. Rd2 Rxd2 37. Qxd2 Nd7 38. Bb2 Nc5 39. Qc3 f6 40. Qc4+ Qf7 41. Qd4 Qd7 42. Qc4+ Qe6 43. Qd4 a4 44. Ba3 Qe1+ 45. Kh2 Ne4 46. Qd5+ Kh8 47. Bf8 Qg3+ 48. Kg1 Qe3+ 49. Kh1 Qc1+ 50. Kh2 Qxf4+ 51. Kg1 Ng3 52. Qd7 Qd4+ 53. Qxd4 Ne2+ 54. Kf2 Nxd4 55. Be7 Nxb5 0-1

[Event "Krakow-ch rapid"]
[Site "Krakow"]
[Date "2018.06.16"]
[Round "2"]
[White "Lach, Mateusz"]
[Black "Jaskolka, Tomasz"]
[Result "0-1"]
[ECO "A84"]
[WhiteElo "1629"]
[BlackElo "2115"]
[PlyCount "38"]
[EventDate "2018.06.16"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. d4 e6 2. c4 f5 3. e3 Nf6 4. g3 Be7 5. Bg2 0-0 6. f4 d6 7. Nf3 Qe8 8. 0-0 Ne4 9. Nbd2 Nd7 10. Qb3 c6 11. Nxe4 fxe4 12. Ng5 Bxg5 13. fxg5 Rxf1+ 14. Kxf1 d5 15. Bd2 b6 16. Qc2 Qh5 17. cxd5 Qxh2 18. Qa4 a5 19. Qc4 exd5 0-1

[Event "EU-ch blitz"]
[Site "Katowice"]
[Date "2017.12.15"]
[Round "1"]
[White "Kovalenko, Igor"]
[Black "Lach, Mateusz"]
[Result "1-0"]
[ECO "C00"]
[WhiteElo "2639"]
[BlackElo "1604"]
[PlyCount "83"]
[EventDate "2017.12.15"]
[EventType "swiss (blitz)"]
[EventRounds "22"]
[EventCountry "POL"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]

1. e4 e6 2. d3 d5 3. Nd2 dxe4 4. dxe4 e5 5. Ngf3 Bg4 6. h3 Bxf3 7. Qxf3 Qf6 8. Qb3 Qb6 9. Nc4 Qxb3 10. axb3 Nc6 11. c3 Nf6 12. Bd3 a6 13. b4 Rd8 14. Bc2 Bd6 15. Be3 0-0 16. Ke2 Nb8 17. Na5 b6 18. Nc4 Rd7 19. Rhd1 Rfd8 20. g4 g6 21. f3 Kg7 22. Rd3 Ne8 23. Rad1 f6 24. h4 Be7 25. Rxd7 Rxd7 26. Rh1 Nd6 27. Nd2 Nc6 28. Ra1 Nb8 29. Bd3 b5 30. Nb3 Nb7 31. Ba7 Nc6 32. Rxa6 Nxa7 33. Rxa7 Nd6 34. Nc5 Nc8 35. Rb7 Nd6 36. Rb8 Rd8 37. Ne6+ Kf7 38. Nxd8+ Bxd8 39. Rxd8 Ke7 40. Rxd6 Kxd6 41. Bxb5 c6 42. Bc4 1-0

[Event "EU-ch blitz"]
[Site "Katowice"]
[Date "2017.12.15"]
[Round "2"]
[White "Lach, Mateusz"]
[Black "Kovalenko, Igor"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "1604"]
[BlackElo "2639"]
[PlyCount "112"]
[EventDate "2017.12.15"]
[EventType "swiss (blitz)"]
[EventRounds "22"]
[EventCountry "POL"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. e3 b6 4. Nc3 Bb7 5. a3 a6 6. b4 d5 7. c5 Be7 8. f4 0-0 9. Bd3 Ne4 10. Bxe4 dxe4 11. Nge2 a5 12. Bd2 Bd5 13. Nxd5 exd5 14. 0-0 axb4 15. axb4 Rxa1 16. Qxa1 b5 17. Nc3 c6 18. Qb2 Nd7 19. Ra1 Qc7 20. Ra3 Rc8 21. Qa1 Nf6 22. Ra7 Qd8 23. Qa5 h5 24. Qxd8+ Bxd8 25. h3 Kf8 26. Na2 h4 27. Nc1 Ke8 28. Nb3 Ng8 29. Be1 Nh6 30. Bf2 Nf5 31. Kf1 Bc7 32. Ke2 Kd8 33. Ra6 Kd7 34. Ra7 Rg8 35. Na5 f6 36. Ra6 Bxa5 37. Rxa5 g5 38. Ra7+ Ke6 39. Rc7 Ne7 40. g4 Ra8 41. f5+ Kf7 42. Bg1 Ra1 43. Kf2 Ra2+ 44. Kf1 Ke8 45. Bf2 Kd8 46. Rb7 Rb2 47. Bxh4 gxh4 48. g5 Nxf5 49. gxf6 Ke8 50. Rc7 Nxe3+ 51. Kg1 Rg2+ 52. Kh1 Rg5 53. Rxc6 Nf5 54. Rb6 Nxd4 55. Rxb5 Nf3 56. Rb8+ Kf7 0-1

[Event "POL-chT3 Podkarpackie"]
[Site "Czudec"]
[Date "2016.06.19"]
[Round "8.10"]
[White "Krynicki, Grzegorz"]
[Black "Lach, Mateusz"]
[Result "0-1"]
[ECO "C15"]
[BlackElo "1426"]
[PlyCount "88"]
[EventDate "2016.05.27"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]
[WhiteTeam "Ustrzyki Dolne"]
[BlackTeam "Bystrowice"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Bd3 c5 5. Bb5+ Nc6 6. e5 Qa5 7. Bxc6+ bxc6 8. Nge2 cxd4 9. Qxd4 Ne7 10. 0-0 Ba6 11. Qg4 Bxc3 12. bxc3 Bxe2 13. Qxe2 Qxc3 14. Rb1 0-0 15. Rb3 Qa5 16. Ba3 Rfe8 17. Rfb1 Nf5 18. Qh5 Qa4 19. Rh3 h6 20. Rf3 g6 21. Qh3 Rab8 22. Rfb3 Rxb3 23. Rxb3 Qh4 24. Qxh4 Nxh4 25. Rb7 Nf5 26. c3 a5 27. g4 Nh4 28. f4 Nf3+ 29. Kg2 Nd2 30. Rc7 Nc4 31. Bc5 g5 32. fxg5 hxg5 33. Be7 Nxe5 34. Bxg5 Nxg4 35. Rxc6 Kg7 36. Rc5 Ra8 37. a4 Ne5 38. Be3 Nc4 39. Bd4+ Kg6 40. Rc7 Nb2 41. Rb7 Nxa4 42. Rb3 Rc8 43. Ra3 Rc4 44. Bb6 Nxb6 0-1

[Event "POL-chT3 Podkarpackie"]
[Site "Czudec"]
[Date "2016.06.19"]
[Round "9.28"]
[White "Lach, Mateusz"]
[Black "Kozak, Antoni"]
[Result "0-1"]
[ECO "E46"]
[WhiteElo "1426"]
[BlackElo "1932"]
[PlyCount "104"]
[EventDate "2016.05.27"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]
[WhiteTeam "Bystrowice"]
[BlackTeam "Czarna LKSz GCKiP"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bd2 0-0 5. e3 c5 6. d5 exd5 7. Nxd5 Nxd5 8. cxd5 Bxd2+ 9. Qxd2 d6 10. Nf3 Bg4 11. Be2 Nd7 12. h3 Bxf3 13. Bxf3 f5 14. 0-0 Qf6 15. Qc3 Qf7 16. g3 Nf6 17. Qd3 Qg6 18. a3 Ne4 19. Kh2 Rae8 20. Qd1 Re5 21. Bh5 Qf6 22. f3 Nxg3 23. Kxg3 Qg5+ 24. Bg4 fxg4 25. hxg4 Rxe3 26. Rc1 Qe5+ 27. Kg2 Re2+ 28. Rf2 Rxf2+ 29. Kxf2 Qxb2+ 30. Rc2 Qe5 31. Kg2 Re8 32. Qd2 b6 33. Rb2 Qe3 34. Qc2 Qd4 35. Rb1 Qxd5 36. Rh1 g6 37. Rd1 Qe6 38. Rd2 d5 39. Qd3 d4 40. Qa6 Re7 41. a4 Qe3 42. Rf2 d3 43. a5 bxa5 44. Qxa5 Qd4 45. Qa6 c4 46. Qc8+ Kg7 47. f4 d2 48. Qc6 d1Q 49. g5 Qg4+ 50. Kh1 Re1+ 51. Rf1 Qdg1+ 52. Rxg1 Qh3# 0-1

[Event "POL-chT3 Podkarpackie"]
[Site "Czudec"]
[Date "2016.06.18"]
[Round "7.21"]
[White "Lach, Mateusz"]
[Black "Babiarz, Mariusz"]
[Result "0-1"]
[ECO "D27"]
[WhiteElo "1426"]
[BlackElo "1888"]
[PlyCount "107"]
[EventDate "2016.05.27"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]
[WhiteTeam "Bystrowice"]
[BlackTeam "Rzeszow RzKSz"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. d4 d5 2. c4 dxc4 3. e3 e6 4. Bxc4 a6 5. Nc3 c5 6. Nf3 Nf6 7. 0-0 b5 8. Be2 Nbd7 9. dxc5 Bxc5 10. b3 Bb7 11. Bb2 0-0 12. Rc1 Rc8 13. Nd2 Qb6 14. Bf3 Bxf3 15. Nxf3 Rfd8 16. Qe2 Be7 17. Rfd1 Nc5 18. Rxd8+ Rxd8 19. Rd1 Rxd1+ 20. Qxd1 Qd6 21. Qxd6 Bxd6 22. Ba3 Nfd7 23. Kf1 Kf8 24. Ke2 Ke7 25. Nd4 Nb8 26. h3 g6 27. Bxc5 Bxc5 28. Kd3 f5 29. f3 Kd6 30. Nc2 Nc6 31. e4 Ke5 32. Ne2 fxe4+ 33. fxe4 Bf2 34. Nc3 h5 35. Ne2 g5 36. Nc3 Bc5 37. Ne2 Bf2 38. g3 Bc5 39. a3 Bf2 40. b4 Kd6 41. Na1 Ne5+ 42. Kc3 Nc4 43. a4 Be1+ 44. Kb3 Nd2+ 45. Ka3 Nxe4 46. Nc2 Bxg3 47. axb5 axb5 48. Ncd4 Bf2 49. Nxb5+ Ke5 50. Ka4 g4 51. hxg4 h4 52. Na3 h3 53. Nc4+ Kf6 54. Nd6 0-1

[Event "POL-chT3 Podkarpackie"]
[Site "Czudec"]
[Date "2016.06.18"]
[Round "6.15"]
[White "Rogus, Sylwester"]
[Black "Lach, Mateusz"]
[Result "0-1"]
[ECO "C01"]
[WhiteElo "1609"]
[BlackElo "1426"]
[PlyCount "98"]
[EventDate "2016.05.27"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]
[WhiteTeam "Pilzno GKSz Hetman II"]
[BlackTeam "Bystrowice"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. e4 e6 2. Nf3 d5 3. exd5 exd5 4. d4 Nf6 5. Bd3 Bd6 6. 0-0 0-0 7. Bg5 Bg4 8. Nbd2 Nbd7 9. Re1 Re8 10. Nf1 Rxe1 11. Qxe1 Bxf3 12. gxf3 c6 13. Ng3 Qc7 14. Kh1 Bf4 15. Bxf4 Qxf4 16. Qe3 Qxe3 17. fxe3 g6 18. Kg2 Re8 19. Kf2 Kg7 20. a4 b6 21. b4 c5 22. bxc5 bxc5 23. Rb1 c4 24. Bf1 h5 25. Rb7 Rb8 26. Rxa7 Rb2 27. Bh3 Rxc2+ 28. Ne2 Nf8 29. a5 Ra2 30. Ke1 N8h7 31. Be6 Ng5 32. Nf4 Nxf3+ 33. Kd1 Ng5 34. Bxd5 Nxd5 35. Nxd5 Ne4 36. a6 c3 37. Nb4 Nf2+ 38. Kc1 Ra4 39. Rb7 Rxb4 40. Rxb4 Nd3+ 41. Kd1 c2+ 42. Kd2 c1Q+ 43. Kxd3 Qa3+ 44. Kc4 Qxa6+ 45. Rb5 Qa2+ 46. Kc5 Qxh2 47. Rb6 Qe2 48. d5 Qxe3+ 49. Kc6 Kf6 0-1

[Event "POL-chT3 Podkarpackie"]
[Site "Czudec"]
[Date "2016.05.29"]
[Round "5.16"]
[White "Lach, Mateusz"]
[Black "Wilk, Tomasz"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "1426"]
[BlackElo "1843"]
[PlyCount "116"]
[EventDate "2016.05.27"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]
[WhiteTeam "Bystrowice"]
[BlackTeam "Mielec"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. d4 Nf6 2. c4 e6 3. e3 Bb4+ 4. Bd2 Bxd2+ 5. Nxd2 d6 6. g3 Nc6 7. Bg2 e5 8. d5 Ne7 9. Ne2 0-0 10. 0-0 a5 11. a3 a4 12. e4 Nd7 13. f4 f5 14. b4 axb3 15. Nxb3 b6 16. a4 exf4 17. Nxf4 Ne5 18. Qc2 g5 19. Ne6 Bxe6 20. dxe6 f4 21. Nd4 N7g6 22. Qb3 Kh8 23. Qc3 Qf6 24. h3 Ra5 25. Nb3 Ra7 26. a5 bxa5 27. Rxa5 Rxa5 28. Qxa5 c5 29. Qa6 Qe7 30. Rd1 Rd8 31. g4 f3 32. Bf1 Nf4 33. Kf2 Nxe6 34. Qb6 Qf8 35. Rd5 Nf4 36. Rxe5 dxe5 37. Qxc5 Qf6 38. Qe3 Ra8 39. Nc1 Qd6 40. c5 Qd1 41. Qc3 Qd4+ 42. Qxd4 exd4 43. c6 Ra3 44. c7 Rc3 45. Nd3 Nxd3+ 46. Bxd3 Rxc7 47. Kxf3 Rf7+ 48. Ke2 Kg7 49. Bc4 Rd7 50. e5 Re7 51. Kd3 Rxe5 52. Kxd4 Re1 53. Bd5 Rg1 54. Ke4 Rg3 55. Kf5 h6 56. Bc6 Rxh3 57. Be8 Rf3+ 58. Ke4 Rf4+ 0-1

[Event "POL-chT3 Podkarpackie"]
[Site "Czudec"]
[Date "2016.05.29"]
[Round "4.22"]
[White "Lusio, Daniel"]
[Black "Lach, Mateusz"]
[Result "1/2-1/2"]
[ECO "D55"]
[WhiteElo "1877"]
[BlackElo "1426"]
[PlyCount "36"]
[EventDate "2016.05.27"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]
[WhiteTeam "Sedziszow Malopolski"]
[BlackTeam "Bystrowice"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. d4 e6 2. c4 d5 3. Nc3 b6 4. Nf3 Nf6 5. Bg5 Be7 6. e3 0-0 7. Be2 dxc4 8. Bxc4 Bb7 9. 0-0 Ne4 10. Bxe7 Qxe7 11. Nxe4 Bxe4 12. Bd3 Bxd3 13. Qxd3 Nd7 14. Rac1 c5 15. dxc5 Nxc5 16. Qc2 Rad8 17. Rfd1 Rxd1+ 18. Rxd1 Rd8 1/2-1/2

[Event "POL-chT3 Podkarpackie"]
[Site "Czudec"]
[Date "2016.05.28"]
[Round "2.28"]
[White "Gawiec, Konrad"]
[Black "Lach, Mateusz"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "1987"]
[BlackElo "1426"]
[PlyCount "126"]
[EventDate "2016.05.27"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]
[WhiteTeam "Czarna LKSz GCKiP II"]
[BlackTeam "Bystrowice"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. Nf3 e6 2. g3 d5 3. Bg2 c5 4. 0-0 Nf6 5. d4 Nc6 6. b3 cxd4 7. Nxd4 Be7 8. Bb2 0-0 9. Nd2 Nxd4 10. Bxd4 Nd7 11. c4 Bf6 12. Bxf6 Nxf6 13. e4 dxe4 14. Nxe4 Qe7 15. Qd6 Qxd6 16. Nxd6 Rb8 17. c5 Ne8 18. Rac1 Nc7 19. Rfd1 Na6 20. a3 Nc7 21. b4 a6 22. Rd3 g6 23. Rcd1 Kg7 24. a4 Kf6 25. f4 h5 26. Nc4 Nd5 27. Bxd5 exd5 28. Rxd5 Be6 29. Rd6 Ke7 30. Nb6 Rfd8 31. Kf2 Bg4 32. R1d3 Rh8 33. h4 Rhd8 34. Ke3 Bf5 35. Rd2 Be6 36. Ke4 Bf5+ 37. Ke5 f6+ 38. Kd5 Be6+ 39. Ke4 Bf5+ 40. Ke3 Re8 41. Kf2 Kf7 42. Nd5 Be6 43. Nc7 Re7 44. Nxe6 Rxe6 45. Rxe6 Kxe6 46. Rd6+ Ke7 47. Ke3 Rc8 48. Kd4 Rb8 49. Kc4 Kf7 50. Rb6 Rc8 51. Rxb7+ Ke6 52. Rb6+ Kf5 53. Rxa6 Kg4 54. Rxf6 Kxg3 55. Rxg6+ Kxh4 56. b5 Kh3 57. b6 h4 58. b7 Rf8 59. c6 Kh2 60. c7 h3 61. c8Q Rxf4+ 62. Kb5 Rf3 63. b8Q+ Kh1 1-0

[Event "POL-chT3 Podkarpackie"]
[Site "Czudec"]
[Date "2016.05.28"]
[Round "3.10"]
[White "Lach, Mateusz"]
[Black "Wozny, Tomasz"]
[Result "1-0"]
[ECO "D31"]
[WhiteElo "1426"]
[BlackElo "1758"]
[PlyCount "95"]
[EventDate "2016.05.27"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]
[WhiteTeam "Bystrowice"]
[BlackTeam "Przemysl MKS Polonia"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. d4 d5 2. c4 c6 3. e3 Nf6 4. Nc3 e6 5. a3 Nbd7 6. c5 e5 7. f4 exf4 8. exf4 Be7 9. Nf3 0-0 10. Bd3 Re8 11. 0-0 Nf8 12. h3 b6 13. b4 a5 14. Bd2 Bb7 15. Na4 N8d7 16. Re1 b5 17. Nc3 a4 18. Rc1 Qc7 19. Ne5 Nf8 20. f5 N6d7 21. Nxb5 Qb8 22. Nc3 Nxe5 23. dxe5 Bh4 24. Re2 Bg3 25. Nxa4 Rxe5 26. Qb3 Rxe2 27. Bxe2 Qe5 28. Bg4 Rxa4 29. Qxa4 Qd4+ 30. Kh1 Qxd2 31. Qd1 Qe3 32. Rb1 Be5 33. Qf3 Qxf3 34. Bxf3 Nd7 35. a4 Kf8 36. Be2 Ke7 37. Rc1 Bd4 38. a5 Kd8 39. a6 Ba8 40. a7 Kc7 41. Ba6 f6 42. g4 Ne5 43. Kg2 Be3 44. Rd1 Bf4 45. Kf2 Nd7 46. Kf3 Be5 47. Re1 h6 48. h4 1-0

[Event "POL-chT3 Podkarpackie"]
[Site "Czudec"]
[Date "2016.05.27"]
[Round "1.4"]
[White "Juszczuk, Grzegorz"]
[Black "Lach, Mateusz"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "1861"]
[BlackElo "1426"]
[PlyCount "105"]
[EventDate "2016.05.27"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]
[WhiteTeam "Tarnobrzeg"]
[BlackTeam "Bystrowice"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. d4 e6 2. Nf3 d5 3. Bf4 c5 4. e3 Nc6 5. Be2 a6 6. 0-0 c4 7. a4 Bd7 8. b3 b5 9. c3 f5 10. Ne5 Nf6 11. Nd2 Be7 12. Bh5+ g6 13. Bf3 Qc8 14. Qc2 0-0 15. Qa2 Nxe5 16. dxe5 Ne4 17. Bxe4 fxe4 18. a5 h5 19. h3 Kh7 20. b4 g5 21. Bg3 Be8 22. f3 exf3 23. Nxf3 Bg6 24. Nd4 Bd3 25. Rxf8 Bxf8 26. Qf2 Bf5 27. Nxf5 exf5 28. Qf3 Qe6 29. Qxh5+ Bh6 30. Rd1 Rf8 31. Rd4 Rd8 32. Qf3 Kg6 33. h4 g4 34. Qf2 Bg7 35. Qf4 Bh6 36. Qf2 Bf8 37. Bf4 Be7 38. g3 Kh5 39. Qd2 Bf8 40. Kf2 Bg7 41. e4 fxe4 42. Rxe4 Rf8 43. Rd4 Rf5 44. Rxd5 Bxe5 45. Rc5 Bxf4 46. Qxf4 Rxc5 47. bxc5 Kg6 48. Qd6 Kf6 49. h5 b4 50. cxb4 c3 51. Qxe6+ Kxe6 52. Ke2 Kd5 53. Kd3 1-0

[Event "POL-chT U26 rapid"]
[Site "Hucisko"]
[Date "2016.01.17"]
[Round "8.21"]
[White "Lach, Mateusz"]
[Black "Malaczek, Mateusz"]
[Result "1-0"]
[ECO "B14"]
[WhiteElo "1426"]
[BlackElo "1905"]
[PlyCount "137"]
[EventDate "2016.01.16"]
[EventType "team-swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 170 Extra"]
[Source "ChessBase"]
[SourceDate "2016.02.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.02.25"]
[SourceQuality "1"]
[WhiteTeam "Rzeszow URz"]
[BlackTeam "Poznan PP"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. d4 g6 2. c4 Bg7 3. e3 c5 4. Nf3 cxd4 5. exd4 Nf6 6. Nc3 d5 7. cxd5 0-0 8. Bc4 Nbd7 9. 0-0 Nb6 10. Bb3 Nbxd5 11. h3 h6 12. Re1 Re8 13. a3 b6 14. Be3 Bb7 15. Ne5 Rc8 16. Qd2 h5 17. Rac1 e6 18. Bg5 Nxc3 19. bxc3 Qd6 20. Bxf6 Bxf6 21. a4 Rcd8 22. Qe2 Qa3 23. Qa2 Qxa2 24. Bxa2 Bd5 25. Bxd5 Rxd5 26. Nd3 Rc8 27. Re2 Ra5 28. Ra2 a6 29. Kf1 b5 30. Nc5 bxa4 31. Rca1 Be7 32. Nxa4 Kg7 33. Ke2 Kf6 34. Kd3 Rg5 35. f3 e5 36. Nb6 Rd8 37. Rxa6 Kg7 38. g4 hxg4 39. hxg4 exd4 40. cxd4 Bc5 41. R1a4 Bxb6 42. Rxb6 Rgd5 43. Rc6 Kh6 44. f4 f5 45. gxf5 Rxf5 46. Raa6 Rxf4 47. Rxg6+ Kh7 48. Rgd6 Rg8 49. Rd7+ Rg7 50. Rxg7+ Kxg7 51. Re6 Kf7 52. Re1 Rf6 53. d5 Rd6 54. Kd4 Rd7 55. Kc5 Rc7+ 56. Kd6 Ra7 57. Kc6 Ra6+ 58. Kb5 Ra2 59. d6 Rd2 60. Kc6 Rc2+ 61. Kd7 Ra2 62. Kd8 Ra8+ 63. Kc7 Ra7+ 64. Kb6 Ra2 65. d7 Rd2 66. Kc7 Rc2+ 67. Kd8 Rd2 68. Rc1 Ke6 69. Rc6+ 1-0

[Event "POL-chT U26 rapid"]
[Site "Hucisko"]
[Date "2016.01.16"]
[Round "2.15"]
[White "Lach, Mateusz"]
[Black "Butkiewicz, Lukasz"]
[Result "0-1"]
[ECO "E10"]
[WhiteElo "1426"]
[BlackElo "2442"]
[PlyCount "72"]
[EventDate "2016.01.16"]
[EventType "team-swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 170 Extra"]
[Source "ChessBase"]
[SourceDate "2016.02.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.02.25"]
[SourceQuality "1"]
[WhiteTeam "Rzeszow URz"]
[BlackTeam "Warsaw UW"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. d4 Nf6 2. c4 e6 3. e3 c5 4. Nf3 Be7 5. Be2 0-0 6. 0-0 b6 7. dxc5 bxc5 8. b3 Nc6 9. Bb2 d6 10. Nfd2 Bb7 11. Bf3 Qc8 12. Nc3 Ne5 13. Bxb7 Qxb7 14. Nf3 Ng6 15. Qc2 Rfd8 16. Rfd1 Rac8 17. Qe2 Bf8 18. Rd2 d5 19. cxd5 exd5 20. Rad1 a6 21. h3 Rd7 22. Nh2 h5 23. f3 c4 24. bxc4 dxc4 25. Rxd7 Nxd7 26. Ne4 Nc5 27. Nxc5 Bxc5 28. Bd4 Bxd4 29. exd4 c3 30. Rc1 Nf4 31. Qe3 Nd5 32. Qe4 c2 33. Nf1 Qb2 34. Qe1 Nf4 35. Nd2 Qxc1 36. Qxc1 Ne2+ 0-1

[Event "POL-chT U26 rapid"]
[Site "Hucisko"]
[Date "2016.01.16"]
[Round "6.21"]
[White "Lach, Mateusz"]
[Black "Obrusnik, Michal"]
[Result "1-0"]
[ECO "E14"]
[WhiteElo "1426"]
[BlackElo "2276"]
[PlyCount "123"]
[EventDate "2016.01.16"]
[EventType "team-swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 170 Extra"]
[Source "ChessBase"]
[SourceDate "2016.02.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.02.25"]
[SourceQuality "1"]
[WhiteTeam "Rzeszow URz"]
[BlackTeam "Gliwice Politechnika Slaska"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. d4 Nf6 2. c4 e6 3. e3 b6 4. Nc3 Bb7 5. Nf3 d5 6. Be2 Bd6 7. 0-0 0-0 8. h3 Nbd7 9. a3 c5 10. dxc5 bxc5 11. cxd5 exd5 12. b3 Re8 13. Bb2 a6 14. Rc1 Rc8 15. Na2 Qe7 16. b4 Ne4 17. Qa4 cxb4 18. axb4 Nb6 19. Qb3 Nc4 20. Rfd1 Nxb2 21. Qxb2 h6 22. Qd4 Ra8 23. Bd3 Ng5 24. Nxg5 hxg5 25. Qg4 g6 26. Rb1 a5 27. b5 a4 28. b6 a3 29. Bb5 Red8 30. Rdc1 Ra5 31. Bc6 Bxc6 32. Rxc6 Qe5 33. g3 Qe6 34. Qxe6 fxe6 35. b7 Bb8 36. Rc8 Rf8 37. Rbc1 Bd6 38. Rxf8+ Kxf8 39. b8Q+ Bxb8 40. Rc8+ Ke7 41. Rxb8 Rc5 42. Ra8 d4 43. exd4 Rc4 44. Rxa3 Rxd4 45. Kg2 g4 46. h4 Kf6 47. Re3 g5 48. hxg5+ Kxg5 49. Rxe6 Rd3 50. Re3 Rd2 51. Nc3 Kf5 52. Ne2 Ra2 53. Nd4+ Kg5 54. Ne2 Rc2 55. Nf4 Ra2 56. Re5+ Kf6 57. Re6+ Kf5 58. Re8 Ra3 59. Nd5 Ra4 60. Ne3+ Kg5 61. Rg8+ Kh5 62. Rxg4 1-0

