[Event "Rottach Egern Seniors Cup 12th"]
[Site "Rottach Egern"]
[Date "2024.04.10"]
[Round "5"]
[White "Prause, Dieter"]
[Black "Lachat, Martin"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "1877"]
[BlackElo "1748"]
[PlyCount "109"]
[EventDate "2024.04.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB16_2024"]
[SourceDate "2024.04.17"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.17"]
[SourceQuality "1"]

1. Nf3 f5 2. d3 g6 3. Nbd2 Nf6 4. g3 Bg7 5. Bg2 0-0 6. c3 d6 7. 0-0 e5 8. Qb3+ Kh8 9. e4 fxe4 10. Nxe4 Nxe4 11. dxe4 Qe7 12. Be3 Nc6 13. Rfd1 Qe6 14. Qc2 Qe7 15. Qd2 Bg4 16. Bg5 Bf6 17. Bh6 Bg7 18. Bxg7+ Kxg7 19. Qe3 Qf6 20. Rd3 Bxf3 21. Bxf3 Rf7 22. Bg2 Raf8 23. f3 g5 24. Rf1 h6 25. Bh3 h5 26. Bf5 Ne7 27. g4 hxg4 28. fxg4 b6 29. Rf3 Rh8 30. Rh3 Rff8 31. Rf3 Rh4 32. Qe2 Rfh8 33. h3 Ng6 34. Bxg6 Qxg6 35. Kg2 Re8 36. Rf5 Rhh8 37. Qd2 Kh6 38. Rdf3 Kh7 39. Qxg5 Qxg5 40. Rxg5 Re7 41. Rff5 Rg8 42. Rh5+ Kg6 43. h4 Kg7 44. Kg3 Rf7 45. Rxf7+ Kxf7 46. Rh7+ Rg7 47. Rh8 Rg8 48. Rxg8 Kxg8 49. g5 Kg7 50. h5 c6 51. Kf3 d5 52. Ke3 a5 53. a4 Kf7 54. b3 Kg7 55. Kd3 1-0

[Event "Rottach Egern Seniors Cup 12th"]
[Site "Rottach Egern"]
[Date "2024.04.09"]
[Round "4"]
[White "Lachat, Martin"]
[Black "Niedenthal, Robert"]
[Result "1-0"]
[ECO "A40"]
[WhiteElo "1748"]
[BlackElo "1672"]
[PlyCount "75"]
[EventDate "2024.04.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB16_2024"]
[SourceDate "2024.04.17"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.17"]
[SourceQuality "1"]

1. c4 g6 2. d4 Bg7 3. e4 b6 4. Nc3 Bb7 5. Nf3 d6 6. Qc2 Nc6 7. Be3 e6 8. a3 Nge7 9. Be2 0-0 10. 0-0 a6 11. Rfd1 Qc8 12. Rac1 Rb8 13. b4 Qe8 14. Qd2 Rd8 15. Bh6 f6 16. Bxg7 Kxg7 17. Qc2 h6 18. h3 f5 19. Qb2 Kh7 20. d5 exd5 21. exf5 Rxf5 22. g4 Rf4 23. Nxd5 Nxd5 24. cxd5 Ne5 25. Nxe5 dxe5 26. Rxc7+ Rf7 27. Rxf7+ Qxf7 28. Qxe5 Re8 29. Qb2 Bxd5 30. Qd2 Rd8 31. Bc4 Qf3 32. Bxd5 Qxh3 33. Qf4 Rd7 34. Bg8+ Kxg8 35. Qb8+ Kf7 36. Rxd7+ Kf6 37. Qf4+ Ke6 38. Qd6# 1-0

[Event "Rottach Egern Seniors Cup 12th"]
[Site "Rottach Egern"]
[Date "2024.04.08"]
[Round "3"]
[White "De Polzer, Manfredi"]
[Black "Lachat, Martin"]
[Result "1-0"]
[ECO "A85"]
[WhiteElo "1639"]
[BlackElo "1748"]
[PlyCount "99"]
[EventDate "2024.04.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB16_2024"]
[SourceDate "2024.04.17"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.17"]
[SourceQuality "1"]

1. d4 f5 2. c4 g6 3. Nc3 Nf6 4. Bf4 Bg7 5. Nf3 0-0 6. e3 d6 7. d5 c6 8. Be2 e5 9. dxe6 Bxe6 10. Bxd6 Rf7 11. Ng5 Qd7 12. Nxf7 Qxf7 13. Qb3 Ne8 14. Bg3 b5 15. cxb5 Bxb3 16. axb3 Bxc3+ 17. bxc3 Qxb3 18. 0-0 Nf6 19. Be5 Nbd7 20. Rfb1 Qe6 21. Bc7 Ne8 22. b6 Nxc7 23. bxc7 Qe8 24. Ba6 Nc5 25. Bb7 Nxb7 26. Rxb7 Qc8 27. Rab1 Kf7 28. Rb8 Qxc7 29. Rxa8 Qa5 30. h3 Qa6 31. Rab8 h5 32. R1b7+ Kf6 33. f4 Qa3 34. Rc7 Qa1+ 35. Kh2 Qxc3 36. Rf8+ Ke6 37. Re8+ Kf6 38. Rxa7 g5 39. fxg5+ Kxg5 40. Rg8+ Kh6 41. Re8 Qc5 42. Ree7 Qd6+ 43. Kg1 Qd1+ 44. Kf2 Qd2+ 45. Kf3 Qd1+ 46. Kf4 Qf1+ 47. Kg3 Qe1+ 48. Kh2 Qd1 49. Re6+ Kg5 50. Rg7+ 1-0

[Event "Rottach Egern Seniors Cup 12th"]
[Site "Rottach Egern"]
[Date "2024.04.07"]
[Round "2"]
[White "Lachat, Martin"]
[Black "Leitner, Leonhard"]
[Result "0-1"]
[ECO "A28"]
[WhiteElo "1748"]
[BlackElo "1870"]
[PlyCount "52"]
[EventDate "2024.04.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB16_2024"]
[SourceDate "2024.04.17"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.17"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. d4 exd4 5. Nxd4 Bb4 6. Qd3 0-0 7. Bd2 Ne5 8. Qc2 Nxc4 9. Bg5 h6 10. Bxf6 Qxf6 11. e3 Ne5 12. Be2 c5 13. Nf3 d5 14. 0-0 Nxf3+ 15. Bxf3 Bxc3 16. bxc3 Be6 17. Rfd1 Rfd8 18. Rd2 Rd7 19. Rad1 Rad8 20. Qb2 b6 21. Kf1 Qe5 22. Kg1 h5 23. h4 Qf6 24. Bxh5 Qxh4 25. Bf3 Bg4 26. Rxd5 Bxf3 0-1

[Event "Rottach Egern Seniors Cup 12th"]
[Site "Rottach Egern"]
[Date "2024.04.06"]
[Round "1"]
[White "Zschunke, Werner"]
[Black "Lachat, Martin"]
[Result "1-0"]
[ECO "A88"]
[WhiteElo "1966"]
[BlackElo "1748"]
[PlyCount "55"]
[EventDate "2024.04.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB16_2024"]
[SourceDate "2024.04.17"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.17"]
[SourceQuality "1"]

1. c4 f5 2. g3 Nf6 3. Bg2 g6 4. Nc3 Bg7 5. Nf3 0-0 6. 0-0 d6 7. d4 c6 8. b3 Qc7 9. Bb2 e5 10. dxe5 dxe5 11. Qc2 Nbd7 12. Rad1 Re8 13. e4 Nc5 14. Nd2 fxe4 15. Ndxe4 Ncxe4 16. Nxe4 Bf5 17. Nxf6+ Bxf6 18. Qe2 Rad8 19. g4 Rxd1 20. Rxd1 Bc8 21. h3 Qe7 22. Qe3 c5 23. Re1 b6 24. Bc6 Rf8 25. Bxe5 Bh4 26. Bd5+ Be6 27. Bg3 Bxg3 28. Bxe6+ 1-0

[Event "AUT-ch Seniors 65"]
[Site "Vienna"]
[Date "2023.05.21"]
[Round "7"]
[White "Lachat, Martin"]
[Black "Grafenauer, Horst"]
[Result "0-1"]
[ECO "A37"]
[WhiteElo "1591"]
[BlackElo "1827"]
[PlyCount "56"]
[EventDate "2023.05.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "AUT"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 Nc6 3. Nf3 g6 4. g3 Bg7 5. Bg2 d6 6. 0-0 e6 7. e3 Nge7 8. d4 0-0 9. dxc5 dxc5 10. Qxd8 Rxd8 11. Bd2 b6 12. a3 Ba6 13. Rfd1 Bxc4 14. Be1 Bb3 15. Rxd8+ Rxd8 16. Rc1 Ne5 17. Nd2 Bd5 18. Bf1 Bb7 19. f4 Nd3 20. Bxd3 Rxd3 21. Kf2 Rd7 22. e4 Bd4+ 23. Kf1 Ba6+ 24. Kg2 Nc6 25. Nf3 Kf8 26. Nxd4 Nxd4 27. e5 Ke7 28. Ne4 Bb7 0-1

[Event "AUT-ch Seniors 65"]
[Site "Vienna"]
[Date "2023.05.20"]
[Round "6"]
[White "Zierlinger, Karl"]
[Black "Lachat, Martin"]
[Result "0-1"]
[ECO "A81"]
[WhiteElo "1371"]
[BlackElo "1591"]
[PlyCount "64"]
[EventDate "2023.05.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "AUT"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. d4 f5 2. g3 g6 3. Bg2 Nf6 4. Nc3 Bg7 5. Nf3 0-0 6. Bf4 d6 7. Qd2 c6 8. Bh6 Nbd7 9. Bxg7 Kxg7 10. Ng5 Nb6 11. b3 Qc7 12. 0-0 h6 13. Nh3 e5 14. e4 fxe4 15. dxe5 dxe5 16. Rae1 Bf5 17. Nxe4 Nxe4 18. Rxe4 Bxe4 19. Bxe4 Rad8 20. Qe2 Qd7 21. Bd3 Qxh3 22. Qxe5+ Kg8 23. Bxg6 Qg4 24. Bd3 Rfe8 25. Qf6 Qg7 26. Qf3 Re7 27. Kg2 Qg5 28. Rd1 Kg7 29. Be4 Rxd1 30. h4 Qf6 31. Qg4+ Kf8 32. Qxd1 Rxe4 0-1

[Event "AUT-ch Seniors 65"]
[Site "Vienna"]
[Date "2023.05.19"]
[Round "5"]
[White "Lachat, Martin"]
[Black "Gaspar, Zdravko"]
[Result "1/2-1/2"]
[ECO "D13"]
[WhiteElo "1591"]
[BlackElo "1495"]
[PlyCount "98"]
[EventDate "2023.05.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "AUT"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. c4 c6 2. d4 d5 3. cxd5 cxd5 4. Nf3 Nf6 5. Bf4 Bf5 6. e3 Qb6 7. b3 e6 8. Bd3 Bxd3 9. Qxd3 Nc6 10. 0-0 Be7 11. Nc3 Nb4 12. Qe2 Rc8 13. Rfc1 0-0 14. Na4 Qa6 15. Qxa6 Nxa6 16. Ne5 Rfd8 17. Nd3 Ba3 18. Rc3 Rxc3 19. Nxc3 Nb4 20. Nxb4 Bb2 21. Rd1 Bxc3 22. Nd3 Ba5 23. Rc1 Bb6 24. Bc7 Bxc7 25. Rxc7 Rb8 26. Nc5 b6 27. Na6 Ra8 28. Kf1 Kf8 29. f3 Ke8 30. Ke2 Nd7 31. Kd2 Kd8 32. a4 h5 33. h4 g6 34. g4 f5 35. gxh5 gxh5 36. Rc6 Nf8 37. Nc7 Kd7 38. Rc3 Rc8 39. Nb5 Rxc3 40. Nxc3 a6 41. e4 Kd6 42. exf5 exf5 43. Ke3 Ng6 44. Ne2 Nxh4 45. Nf4 a5 46. Nxh5 Ng6 47. Nf4 Ne7 48. Nd3 Ng6 49. Nf4 Ne7 1/2-1/2

[Event "AUT-ch Seniors 65"]
[Site "Vienna"]
[Date "2023.05.18"]
[Round "4"]
[White "Lachat, Martin"]
[Black "Pantelic, Slobodan"]
[Result "0-1"]
[ECO "D13"]
[WhiteElo "1591"]
[BlackElo "1527"]
[PlyCount "66"]
[EventDate "2023.05.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "AUT"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. c4 e6 2. Nc3 c6 3. d4 d5 4. cxd5 cxd5 5. Nf3 Nf6 6. e3 a6 7. Bd3 Bd6 8. 0-0 Nc6 9. a3 Bd7 10. b4 Rc8 11. Bb2 b5 12. Rc1 0-0 13. Re1 Qb6 14. e4 Bf4 15. Rc2 dxe4 16. Nxe4 Nxe4 17. Bxe4 Ne7 18. Ree2 Bc6 19. Bxc6 Rxc6 20. Bc1 Bxc1 21. Qxc1 Rfc8 22. Rxc6 Rxc6 23. Rc2 Rd6 24. Rc5 h6 25. Qc2 Nf5 26. Rc8+ Rd8 27. Rxd8+ Qxd8 28. Qc5 Qa8 29. Kf1 Qb7 30. Ke2 Kh7 31. g4 Qe4+ 32. Kf1 Qxg4 33. Ke2 Qe4+ 0-1

[Event "AUT-ch Seniors 65"]
[Site "Vienna"]
[Date "2023.05.17"]
[Round "3"]
[White "Veitsch, Norbert"]
[Black "Lachat, Martin"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "1524"]
[BlackElo "1591"]
[PlyCount "86"]
[EventDate "2023.05.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "AUT"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 Nf6 5. Nc3 Be7 6. Bd3 0-0 7. 0-0 Bd7 8. Re1 Nc6 9. Nf3 Bg4 10. Be2 Re8 11. h3 Bh5 12. Bf4 Bf8 13. Bg5 Be7 14. a3 h6 15. Be3 Bf8 16. Nd4 Nxd4 17. Bxh5 Nxh5 18. Bxd4 Nf4 19. Qf3 Ne6 20. Be3 Ng5 21. Qg4 Be7 22. Rad1 Bf6 23. Bd4 Bxd4 24. Rxd4 Qf6 25. Rb4 b6 26. Nd5 Qd8 27. Rc4 c5 28. Rc3 Qc8 29. Qxc8 Raxc8 30. Rce3 Ne6 31. c3 f6 32. f4 Nc7 33. c4 Kf7 34. Nxc7 Rxc7 35. e5 Rce7 36. Kf2 dxe5 37. fxe5 Rxe5 38. Rxe5 Rxe5 39. Rxe5 fxe5 40. Ke3 a5 41. a4 h5 42. h4 Kf6 43. Ke4 Ke6 0-1

[Event "AUT-ch Seniors 65"]
[Site "Vienna"]
[Date "2023.05.16"]
[Round "2"]
[White "Somasundram, Jayakumar"]
[Black "Lachat, Martin"]
[Result "1-0"]
[ECO "C24"]
[WhiteElo "1851"]
[BlackElo "1591"]
[PlyCount "63"]
[EventDate "2023.05.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "AUT"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. Bc4 Be7 4. d3 0-0 5. f4 exf4 6. Bxf4 d6 7. a3 Bg4 8. Nf3 Qd7 9. Qd2 Nc6 10. 0-0-0 a6 11. h3 Be6 12. g4 b5 13. Bxe6 fxe6 14. Rhf1 e5 15. Bg3 Nxg4 16. hxg4 Qxg4 17. Qg2 Nd4 18. Nxd4 exd4 19. Nd5 Bh4 20. Rg1 Bxg3 21. Qxg3 Qxg3 22. Rxg3 Rf7 23. Nb4 c5 24. Nd5 a5 25. Rh1 Raf8 26. Rgg1 b4 27. a4 Rb8 28. b3 Rbf8 29. Kb2 Kh8 30. Rh5 Rf2 31. Ne7 R8f3 32. Rxh7+ 1-0

[Event "AUT-ch Seniors 65"]
[Site "Vienna"]
[Date "2023.05.15"]
[Round "1"]
[White "Lachat, Martin"]
[Black "Schwabeneder, Alois"]
[Result "0-1"]
[ECO "E91"]
[WhiteElo "1591"]
[BlackElo "1893"]
[PlyCount "36"]
[EventDate "2023.05.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "AUT"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. d4 Bg7 4. e4 d6 5. Nf3 Bg4 6. Be2 0-0 7. h3 Bxf3 8. Bxf3 Nc6 9. 0-0 e5 10. dxe5 Nxe5 11. Qe2 Qe7 12. Nd5 Nxd5 13. cxd5 Rae8 14. Re1 f5 15. Bf4 Nxf3+ 16. gxf3 fxe4 17. Qd2 Qf6 18. fxe4 Qxf4 0-1

[Event "Rottach Egern Seniors Cup 11th"]
[Site "Rottach Egern"]
[Date "2023.04.18"]
[Round "4"]
[White "Winkelmeier, Alfred"]
[Black "Lachat, Martin"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "1831"]
[BlackElo "1560"]
[PlyCount "63"]
[EventDate "2023.04.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Be7 3. Nf3 d6 4. d4 exd4 5. Nxd4 Nf6 6. Qf3 0-0 7. 0-0 Nbd7 8. Qe2 Ne5 9. Bb3 c5 10. Nf5 Be6 11. Nxe7+ Qxe7 12. f4 Nc6 13. Bxe6 Qxe6 14. Re1 Rfe8 15. Nc3 Rad8 16. f5 Qe5 17. Bg5 Nd4 18. Qd1 h6 19. Bh4 Rd7 20. Bxf6 Qxf6 21. Nd5 Qe5 22. c3 Nc6 23. f6 Qg5 24. Re3 g6 25. Qe2 Ne5 26. Rg3 Qh4 27. Rf1 h5 28. Qd2 Kh7 29. Rf4 Ng4 30. Rh3 Qg5 31. Qd1 Re6 32. Rxg4 1-0

[Event "Rottach Egern Seniors Cup 11th"]
[Site "Rottach Egern"]
[Date "2023.04.17"]
[Round "3"]
[White "Lachat, Martin"]
[Black "Kalbitz, Erika"]
[Result "1-0"]
[ECO "A34"]
[WhiteElo "1560"]
[BlackElo "1227"]
[PlyCount "95"]
[EventDate "2023.04.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 Nf6 3. Nf3 e6 4. g3 Nc6 5. Bg2 d6 6. 0-0 Be7 7. e3 0-0 8. a3 Rb8 9. d4 cxd4 10. exd4 d5 11. cxd5 exd5 12. Re1 Re8 13. Bf4 Bd6 14. Rxe8+ Nxe8 15. Bxd6 Qxd6 16. Qe2 Be6 17. Re1 Nf6 18. Qd3 a6 19. b4 b5 20. Ne5 Re8 21. f4 g6 22. h3 Bf5 23. Qd2 Ne4 24. Nxe4 dxe4 25. g4 Bd7 26. Nxd7 Qxd7 27. d5 f5 28. gxf5 gxf5 29. Rd1 Ne7 30. d6 Ng6 31. Qc2 Rc8 32. Qa2+ Kg7 33. Qb2+ Kg8 34. Qb3+ Kg7 35. Qg3 Kf6 36. Qg5+ Kf7 37. h4 Rg8 38. Rd5 Ne7 39. Qxe7+ Qxe7 40. dxe7 Kxe7 41. Rxf5 Ke6 42. Re5+ Kf6 43. Rxe4 Rg4 44. h5 Kf5 45. Kf2 Rxf4+ 46. Rxf4+ Kxf4 47. Bb7 Kg5 48. Bxa6 1-0

[Event "Rottach Egern Seniors Cup 11th"]
[Site "Rottach Egern"]
[Date "2023.04.16"]
[Round "2"]
[White "Klein, Gernot"]
[Black "Lachat, Martin"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "1776"]
[BlackElo "1560"]
[PlyCount "19"]
[EventDate "2023.04.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 Nf6 5. Nc3 g6 6. Bg5 Bg7 7. Qd2 0-0 8. 0-0-0 Nc6 9. Nxc6 bxc6 10. e5 1-0

[Event "Rottach Egern Seniors Cup 11th"]
[Site "Rottach Egern"]
[Date "2023.04.15"]
[Round "1"]
[White "Lachat, Martin"]
[Black "Onasch, Gunnar"]
[Result "0-1"]
[ECO "A37"]
[WhiteElo "1560"]
[BlackElo "1939"]
[PlyCount "108"]
[EventDate "2023.04.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 g6 3. Nf3 Bg7 4. g3 Nc6 5. Bg2 e5 6. 0-0 Nge7 7. d3 0-0 8. a3 a6 9. Bg5 f6 10. Bd2 d6 11. e3 Rb8 12. Qc2 Be6 13. Rab1 b5 14. cxb5 axb5 15. b4 cxb4 16. axb4 d5 17. Rfd1 Qd7 18. Be1 Rfc8 19. Qe2 Bg4 20. Qf1 Qd6 21. Na2 Qe6 22. Nc3 Qd6 23. Na2 Be6 24. Bh3 Bxh3 25. Qxh3 Rc7 26. Nd2 Ra7 27. Rb2 f5 28. Nb3 Nd8 29. Qf1 Ne6 30. Rc1 Rc7 31. Rbc2 Rbc8 32. Qe2 Rxc2 33. Rxc2 Rc6 34. Qd1 Qc7 35. Rxc6 Qxc6 36. Qc1 Qxc1 37. Nbxc1 d4 38. Ne2 Nc6 39. Kf1 Bf8 40. exd4 Nexd4 41. Nxd4 Nxd4 42. Bc3 Kf7 43. Nc1 Ke6 44. f4 Nc6 45. Na2 exf4 46. gxf4 Kd5 47. Ke2 Nd4+ 48. Ke3 Bg7 49. Kf2 Ne6 50. Bxg7 Nxg7 51. Ke3 Ne6 52. Nc3+ Kc6 53. d4 Nc7 54. Kd3 Nd5 0-1

[Event "Rottach Egern Seniors Cup 9th"]
[Site "Rottach Egern"]
[Date "2021.10.28"]
[Round "7"]
[White "Kurpiela, Franz"]
[Black "Lachat, Martin"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "1744"]
[BlackElo "1562"]
[PlyCount "71"]
[EventDate "2021.10.22"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nf3 e6 4. c3 Ne7 5. Bg5 0-0 6. Qd2 d6 7. Na3 Nd7 8. Bd3 f6 9. Bh6 c6 10. h4 e5 11. h5 g5 12. Bxg7 Kxg7 13. Bc4 d5 14. exd5 cxd5 15. Bb3 exd4 16. Qxd4 Nb6 17. 0-0-0 Nf5 18. Qd3 Be6 19. Rhe1 Qd7 20. Nc2 Rfe8 21. Nb4 Rad8 22. a3 Ne7 23. h6+ Kh8 24. Nxg5 Bf5 25. Qd4 Ng8 26. Rxe8 Qxe8 27. g4 Be6 28. Re1 Rd6 29. f4 Qd7 30. f5 Bf7 31. c4 Qc7 32. Kb1 Rd7 33. c5 Nc8 34. Nxd5 Bxd5 35. Re8 Bxb3 36. Qxf6+ 1-0

[Event "Rottach Egern Seniors Cup 9th"]
[Site "Rottach Egern"]
[Date "2021.10.27"]
[Round "6"]
[White "Lachat, Martin"]
[Black "Walther, Renate"]
[Result "1-0"]
[ECO "A35"]
[WhiteElo "1562"]
[BlackElo "1142"]
[PlyCount "77"]
[EventDate "2021.10.22"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 Nc6 3. e3 e6 4. d4 g6 5. dxc5 Bxc5 6. a3 Nge7 7. b4 Bb6 8. Ne4 Nf5 9. Bb2 Rg8 10. Nf6+ Ke7 11. Nxg8+ Qxg8 12. Nf3 Bc7 13. Bd3 Ng7 14. 0-0 f6 15. Qc2 Ne5 16. Nxe5 fxe5 17. f4 Nf5 18. Bxf5 gxf5 19. fxe5 b6 20. Qf2 Bb7 21. Rad1 Be4 22. Rd2 Rd8 23. Rfd1 a6 24. Qh4+ Ke8 25. Qh5+ Ke7 26. h4 Bc6 27. b5 axb5 28. cxb5 Bxb5 29. a4 Qg6 30. Qxg6 hxg6 31. Ba3+ Ke8 32. axb5 Bxe5 33. Bd6 Bc3 34. Rd3 Bf6 35. Bc7 Rc8 36. Rxd7 Bxh4 37. Rh7 Be7 38. Rh8+ Kf7 39. Rxc8 1-0

[Event "Rottach Egern Seniors Cup 9th"]
[Site "Rottach Egern"]
[Date "2021.10.26"]
[Round "5"]
[White "Hansch, Klaus Michael"]
[Black "Lachat, Martin"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "1868"]
[BlackElo "1562"]
[PlyCount "105"]
[EventDate "2021.10.22"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]

1. e4 g6 2. d4 e6 3. Nf3 Bg7 4. Bg5 Ne7 5. Bd3 0-0 6. Qd2 f6 7. Bh6 d5 8. Bxg7 Kxg7 9. 0-0 Nbc6 10. c3 e5 11. exd5 Qxd5 12. c4 Qd8 13. d5 Nd4 14. Nxd4 exd4 15. Qf4 c5 16. Nd2 Bf5 17. Qg3 Bxd3 18. Qxd3 Nf5 19. g4 Nd6 20. Rfe1 Qd7 21. Re6 Rae8 22. Rae1 Rxe6 23. Rxe6 f5 24. Qe2 Kg8 25. Re7 Re8 26. Rxe8+ Qxe8 27. Qxe8+ Nxe8 28. gxf5 gxf5 29. Kg2 Nd6 30. Kf3 Kf7 31. Kf4 Kf6 32. f3 b6 33. b3 Nf7 34. a3 Nd6 35. b4 a6 36. bxc5 bxc5 37. Nb3 d3 38. Ke3 Nxc4+ 39. Kxd3 Nxa3 40. Nxc5 Ke5 41. Nxa6 Kxd5 42. f4 Nb5 43. Nb4+ Ke6 44. Nc6 Nd6 45. Ne5 Kf6 46. Nd7+ Kg6 47. Kd4 Nf7 48. Ne5+ Kf6 49. Nxf7 Kxf7 50. Ke5 Kg6 51. Ke6 h5 52. h4 Kg7 53. Kxf5 1-0

[Event "Rottach Egern Seniors Cup 9th"]
[Site "Rottach Egern"]
[Date "2021.10.25"]
[Round "4"]
[White "Lachat, Martin"]
[Black "Simmon, Norbert"]
[Result "1-0"]
[ECO "A28"]
[WhiteElo "1562"]
[BlackElo "1661"]
[PlyCount "49"]
[EventDate "2021.10.22"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 d5 5. cxd5 Nxd5 6. Be2 Be7 7. 0-0 0-0 8. a3 Nf6 9. Qc2 a6 10. b4 Bd6 11. Bb2 Qe7 12. Rfd1 e4 13. Ne1 Bf5 14. d3 exd3 15. Bxd3 Be6 16. Nf3 h6 17. Ne4 Nxe4 18. Bxe4 Nd8 19. Qc3 f5 20. Bd5 Bxd5 21. Rxd5 Qf7 22. Nh4 Ne6 23. Nxf5 Bxh2+ 24. Kf1 c6 25. Nxh6+ 1-0

[Event "Rottach Egern Seniors Cup 9th"]
[Site "Rottach Egern"]
[Date "2021.10.24"]
[Round "3"]
[White "Samarian, Cornel"]
[Black "Lachat, Martin"]
[Result "1-0"]
[ECO "A40"]
[WhiteElo "1666"]
[BlackElo "1562"]
[PlyCount "61"]
[EventDate "2021.10.22"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]

1. d4 g6 2. Nf3 Bg7 3. e3 e6 4. c4 Ne7 5. Nc3 0-0 6. Be2 d5 7. 0-0 Nd7 8. Qb3 dxc4 9. Bxc4 Nb6 10. Bd2 Nxc4 11. Qxc4 a6 12. a4 Bd7 13. Rfd1 c6 14. Qe2 Qc7 15. Be1 Rad8 16. Ne4 Nd5 17. Nc5 Bc8 18. a5 Rfe8 19. Na4 e5 20. dxe5 Bxe5 21. Nxe5 Rxe5 22. Qc4 Rh5 23. g3 Be6 24. Qd4 Qd7 25. Nc5 Qc8 26. e4 Bg4 27. Rd2 Bf3 28. Qd3 Qh3 29. Qxf3 Re8 30. Qg2 Rxe4 31. Qxh3 1-0

[Event "Rottach Egern Seniors Cup 9th"]
[Site "Rottach Egern"]
[Date "2021.10.23"]
[Round "2"]
[White "Lachat, Martin"]
[Black "Flockerzi, Armin"]
[Result "0-1"]
[ECO "A53"]
[WhiteElo "1562"]
[BlackElo "1767"]
[PlyCount "54"]
[EventDate "2021.10.22"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 d6 3. Nf3 Nf6 4. e3 Bg4 5. Be2 Be7 6. 0-0 c6 7. b3 Nbd7 8. Bb2 0-0 9. Qc2 Re8 10. d4 exd4 11. Nxd4 Bxe2 12. Ndxe2 Qc7 13. Rac1 Rac8 14. Rfd1 Nf8 15. Ng3 Ng6 16. Nf5 Rcd8 17. Ne2 Ne5 18. Nxe7+ Qxe7 19. Nf4 Neg4 20. Qe2 Qe4 21. Bxf6 Nxf6 22. Rd2 h6 23. Rcd1 g6 24. Rd4 Qe5 25. R1d3 c5 26. Rd5 Qxf4 27. Qb2 Nxd5 0-1

[Event "Rottach Egern Seniors Cup 9th"]
[Site "Rottach Egern"]
[Date "2021.10.22"]
[Round "1"]
[White "Beck, Gerald1111"]
[Black "Lachat, Martin"]
[Result "1-0"]
[ECO "A10"]
[WhiteElo "1928"]
[BlackElo "1562"]
[PlyCount "59"]
[EventDate "2021.10.22"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]

1. c4 g6 2. g3 Bg7 3. Bg2 e6 4. Nc3 Ne7 5. e4 0-0 6. Nge2 c6 7. Nf4 d6 8. 0-0 e5 9. Nfe2 Be6 10. b3 d5 11. exd5 cxd5 12. cxd5 Nxd5 13. Ne4 Qe7 14. Bb2 Nc6 15. Rc1 Rac8 16. Nc5 Rfd8 17. Nxe6 Qxe6 18. a3 Nce7 19. Rc4 b5 20. Rxc8 Qxc8 21. Qa1 Qe6 22. Re1 Qd6 23. Nc3 Nxc3 24. Bxc3 f6 25. d4 Nc6 26. Bxc6 Qxc6 27. dxe5 fxe5 28. Bxe5 Bxe5 29. Qxe5 Rf8 30. Qe6+ 1-0

[Event "Altenkirchen Seniors op 18th"]
[Site "Altenkirchen"]
[Date "2021.07.10"]
[Round "9"]
[White "Lachat, Martin"]
[Black "Schulze Forsthoevel, Manfred"]
[Result "1/2-1/2"]
[ECO "E20"]
[WhiteElo "1548"]
[BlackElo "1543"]
[PlyCount "52"]
[EventDate "2021.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. c4 Nf6 2. d4 e6 3. Nc3 Bb4 4. Bd2 0-0 5. Qc2 d5 6. cxd5 Nxd5 7. e4 Nxc3 8. Bxc3 Bxc3+ 9. Qxc3 c6 10. Nf3 Nd7 11. Be2 Qe7 12. 0-0 c5 13. Rfd1 b6 14. dxc5 Qxc5 15. Qd3 Ne5 16. Nxe5 Qxe5 17. Rd2 Bb7 18. f3 Qc5+ 19. Qd4 Qxd4+ 20. Rxd4 Rfd8 21. Rad1 Rxd4 22. Rxd4 Bc6 23. Rd6 Be8 24. Kf2 Kf8 25. e5 Ke7 26. f4 Rd8 1/2-1/2

[Event "Altenkirchen Seniors op 18th"]
[Site "Altenkirchen"]
[Date "2021.07.09"]
[Round "8"]
[White "Scheffler, Juergen"]
[Black "Lachat, Martin"]
[Result "0-1"]
[ECO "A80"]
[WhiteElo "1425"]
[BlackElo "1548"]
[PlyCount "48"]
[EventDate "2021.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. d4 f5 2. Nf3 Nf6 3. Nc3 g6 4. h3 Bg7 5. Bf4 d6 6. e3 0-0 7. Be2 c6 8. Rc1 Qe8 9. 0-0 Nbd7 10. a3 e5 11. dxe5 dxe5 12. Bh2 Qe7 13. Bc4+ Kh8 14. Ba2 Ne8 15. Qe2 Nb6 16. Rcd1 e4 17. Nd4 c5 18. Nb3 Be6 19. Nc1 Bxa2 20. N1xa2 Be5 21. Rd2 Bxh2+ 22. Kxh2 Nd6 23. Nd5 Qe5+ 24. f4 exf3+ 0-1

[Event "Altenkirchen Seniors op 18th"]
[Site "Altenkirchen"]
[Date "2021.07.08"]
[Round "7"]
[White "Lachat, Martin"]
[Black "Sombetzki, Detlef"]
[Result "0-1"]
[ECO "D10"]
[WhiteElo "1548"]
[BlackElo "1440"]
[PlyCount "91"]
[EventDate "2021.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. c4 c6 2. Nc3 d5 3. cxd5 cxd5 4. d4 e6 5. a3 Nf6 6. Nf3 Nc6 7. Bg5 h6 8. Bh4 Be7 9. e3 a6 10. Bd3 Nd7 11. Bg3 Nf6 12. h3 Bd6 13. Bxd6 Qxd6 14. 0-0 0-0 15. Rc1 Qd8 16. b4 b5 17. Qb3 Bd7 18. Rc2 Na7 19. Rfc1 Nc8 20. Ne5 Nb6 21. Be2 Nc4 22. Nd3 Bc6 23. Nc5 Qe7 24. Bd3 Nd7 25. e4 f6 26. exd5 exd5 27. Re2 Nxc5 28. dxc5 Qf7 29. Rce1 Rae8 30. Qa2 Rxe2 31. Rxe2 Re8 32. a4 Rxe2 33. Bxe2 Qe7 34. axb5 axb5 35. Kf1 Kf8 36. Bf3 Qe5 37. Qc2 Qh2 38. Qd3 Ne5 39. Qd1 Qh1+ 40. Ke2 Qxd1+ 41. Nxd1 Nxf3 42. Kxf3 Ke7 43. g3 f5 44. Kf4 Ke6 45. Nb2 d4 46. f3 0-1

[Event "Altenkirchen Seniors op 18th"]
[Site "Altenkirchen"]
[Date "2021.07.07"]
[Round "6"]
[White "Krueger, Detlef"]
[Black "Lachat, Martin"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "1809"]
[BlackElo "1548"]
[PlyCount "35"]
[EventDate "2021.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. Nf3 Nxd5 4. Bc4 Nf6 5. d4 Bg4 6. Ne5 Be6 7. Bxe6 fxe6 8. Nc3 Nbd7 9. Qf3 c6 10. Bg5 g6 11. Ne4 Bg7 12. 0-0-0 0-0 13. Qe3 Qc7 14. Nxd7 Qxd7 15. Nc5 Qd5 16. Qxe6+ Qxe6 17. Nxe6 Rfe8 18. Nc7 1-0

[Event "Altenkirchen Seniors op 18th"]
[Site "Altenkirchen"]
[Date "2021.07.06"]
[Round "5"]
[White "Lachat, Martin"]
[Black "Pfaff, Helmut"]
[Result "1-0"]
[ECO "A22"]
[WhiteElo "1548"]
[BlackElo "1310"]
[PlyCount "85"]
[EventDate "2021.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 d6 4. e3 Be7 5. Be2 0-0 6. d4 exd4 7. Nxd4 d5 8. 0-0 Re8 9. Qb3 c5 10. Nf3 Ne4 11. Nxd5 Bd6 12. Rd1 Nc6 13. Nc3 Nxc3 14. Qxc3 Re6 15. b3 Qa5 16. Qxa5 Nxa5 17. Bb2 Nc6 18. Ng5 Rg6 19. Ne4 Bf5 20. Nxd6 Bc2 21. Bd3 Rxd6 22. Bxc2 Rad8 23. Rxd6 Rxd6 24. Rd1 Re6 25. Bf5 Re7 26. Rd7 g6 27. Rxe7 Nxe7 28. Bd7 a6 29. Bf6 Nf5 30. Bxf5 gxf5 31. Be7 b6 32. Bd8 b5 33. Be7 bxc4 34. bxc4 a5 35. a4 Kg7 36. Bxc5 Kf6 37. Bb6 Ke6 38. Bxa5 Kd7 39. c5 Kc6 40. Bb6 Kb7 41. a5 f4 42. e4 Kc6 43. a6 1-0

[Event "Altenkirchen Seniors op 18th"]
[Site "Altenkirchen"]
[Date "2021.07.05"]
[Round "4"]
[White "Bade, Heidrun"]
[Black "Lachat, Martin"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "1790"]
[BlackElo "1548"]
[PlyCount "101"]
[EventDate "2021.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Bc4 Nf6 5. Nge2 Bf5 6. d3 e6 7. Bd2 c6 8. Nd5 Qd8 9. Nxf6+ Qxf6 10. Bc3 Qd8 11. Ng3 Bg6 12. Qf3 Nd7 13. h4 h5 14. Ne4 Bxe4 15. Qxe4 Nf6 16. Qf3 Be7 17. Be5 Bd6 18. Bxd6 Qxd6 19. 0-0-0 0-0 20. d4 b5 21. Be2 Qd5 22. Qxd5 cxd5 23. Bxb5 Ne4 24. Rhf1 Rab8 25. Bd3 Nd6 26. Rd2 Rb4 27. c3 Rc8 28. Bc2 Rb6 29. Re2 Nb5 30. Bd3 Nd6 31. Rfe1 Rb4 32. Rc2 Ra4 33. b3 Ra5 34. Re5 g6 35. f3 Nb5 36. Bxb5 Rxb5 37. g4 hxg4 38. fxg4 Rb6 39. Re3 Kg7 40. Rf3 Rh8 41. Rh2 Rb7 42. g5 Kf8 43. c4 dxc4 44. bxc4 Rd7 45. Rd3 Rc7 46. c5 Ke7 47. Kd2 Kd7 48. Ra3 Kc6 49. Ra6+ Kd5 50. Kd3 Rd8 51. Re2 1-0

[Event "Altenkirchen Seniors op 18th"]
[Site "Altenkirchen"]
[Date "2021.07.04"]
[Round "3"]
[White "Lachat, Martin"]
[Black "Sand, Rosemarie"]
[Result "1/2-1/2"]
[ECO "A35"]
[WhiteElo "1548"]
[BlackElo "1812"]
[PlyCount "97"]
[EventDate "2021.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 Nc6 3. Nf3 g6 4. e3 Bg7 5. d4 cxd4 6. exd4 d6 7. Be3 e6 8. Be2 Nge7 9. 0-0 0-0 10. Qd2 d5 11. cxd5 Nxd5 12. Nxd5 exd5 13. Rac1 Be6 14. Rc5 Rc8 15. Rfc1 Qd7 16. Bb5 a6 17. Bxc6 Rxc6 18. Rxc6 bxc6 19. Bh6 f6 20. Bxg7 Kxg7 21. Qb4 Qc8 22. Qd6 Bd7 23. Re1 Re8 24. Re7+ Rxe7 25. Qxe7+ Kg8 26. Qxf6 Qe8 27. Ne5 a5 28. Qd6 Bf5 29. Qxc6 Qd8 30. f4 Qh4 31. Qxd5+ Kg7 32. g3 Qe7 33. Kf2 Qc7 34. Qc5 Qb7 35. Qc3 Qh1 36. Nf3 Bh3 37. d5+ Kh6 38. Ke3 Bg4 39. Ke4 Qb1+ 40. Kd4 Qd1+ 41. Ke4 Qe2+ 42. Qe3 Bf5+ 43. Kd4 Qxb2+ 44. Qc3 Qf2+ 45. Ke5 Qxa2 46. Nd4 Bg4 47. f5 gxf5 48. Nxf5+ Bxf5 49. Kxf5 1/2-1/2

[Event "Altenkirchen Seniors op 18th"]
[Site "Altenkirchen"]
[Date "2021.07.03"]
[Round "2"]
[White "Schoenfeld, Volker"]
[Black "Lachat, Martin"]
[Result "1-0"]
[ECO "B10"]
[WhiteElo "1964"]
[BlackElo "1548"]
[PlyCount "43"]
[EventDate "2021.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. c4 c6 4. Qa4 Bd7 5. Qb3 cxd5 6. cxd5 Qc7 7. Nc3 e6 8. d4 exd5 9. Nf3 Bc6 10. Bd3 Be7 11. 0-0 0-0 12. Re1 Re8 13. Bg5 Nbd7 14. Rac1 a6 15. Ne5 Qb6 16. Nxc6 bxc6 17. Qxb6 Nxb6 18. Ne2 Rac8 19. Bxa6 Rc7 20. Ng3 Ne4 21. Nxe4 dxe4 22. Rxe4 1-0

[Event "Altenkirchen Seniors op 18th"]
[Site "Altenkirchen"]
[Date "2021.07.02"]
[Round "1"]
[White "Lachat, Martin"]
[Black "Cleve Prinz, Wolfgang"]
[Result "1/2-1/2"]
[ECO "E11"]
[WhiteElo "1548"]
[BlackElo "1911"]
[PlyCount "132"]
[EventDate "2021.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. c4 e6 2. d4 Nf6 3. Nf3 Bb4+ 4. Bd2 c5 5. Bxb4 cxb4 6. e3 0-0 7. Be2 d5 8. 0-0 dxc4 9. Bxc4 b6 10. Nbd2 Bb7 11. Rc1 Nc6 12. Qe2 a6 13. Rfd1 Na5 14. Bd3 Nd5 15. Rc2 b3 16. Nxb3 Nxb3 17. axb3 Nb4 18. Rc3 Qe7 19. Nd2 b5 20. Be4 Rfd8 21. Bxb7 Qxb7 22. Nf3 Rac8 23. Ne5 Rxc3 24. bxc3 Nd5 25. Rc1 Nb6 26. Qf3 Qxf3 27. Nxf3 Kf8 28. Kf1 Ke7 29. Ne5 Rc8 30. Nd3 a5 31. Ke2 a4 32. bxa4 bxa4 33. Nc5 Kd6 34. Kd3 Kc6 35. Ra1 Ra8 36. c4 a3 37. Kc3 e5 38. Nd3 exd4+ 39. exd4 Ra4 40. Kb3 f6 41. d5+ Kc7 42. c5 Rd4 43. cxb6+ Kxb6 44. Kc3 Rxd5 45. Rxa3 Rg5 46. Nf4 Rf5 47. Nd3 Rh5 48. h3 Rg5 49. g3 Rh5 50. h4 g5 51. Ra4 Kc7 52. Rd4 f5 53. Ne5 f4 54. Kd3 fxg3 55. fxg3 gxh4 56. Rxh4 Rxe5 57. Rxh7+ Kd6 58. Rh1 Ke6 59. Rh6+ Kf7 60. Rh4 Kg6 61. g4 Re1 62. Kd2 Re8 63. Rh1 Kg5 64. Rg1 Re4 65. Kd3 Rxg4 66. Rxg4+ Kxg4 1/2-1/2

[Event "Innsbruck op-B 3rd"]
[Site "Innsbruck"]
[Date "2019.08.26"]
[Round "3"]
[White "Lachat, Martin"]
[Black "Beyer, Edith"]
[Result "0-1"]
[ECO "A54"]
[WhiteElo "1625"]
[BlackElo "1445"]
[PlyCount "122"]
[EventDate "2019.08.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "AUT"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 d6 4. d4 exd4 5. Nxd4 c5 6. Nf3 a6 7. e4 Nc6 8. a3 Be7 9. Be2 0-0 10. 0-0 Be6 11. Be3 Qc7 12. Qc2 Nd7 13. Rad1 Nde5 14. Nxe5 Nxe5 15. Nd5 Bxd5 16. Rxd5 Ng6 17. Rfd1 Rad8 18. f4 Qc8 19. h3 Qc7 20. Bg4 Bf6 21. g3 Ne7 22. R5d2 Nc6 23. Rd3 Nd4 24. Qd2 Qc6 25. Qg2 Rfe8 26. Bxd4 Bxd4+ 27. Kh2 Qb6 28. b4 f6 29. Rb3 Qc7 30. Bf3 b6 31. Qc2 Kh8 32. a4 Re7 33. bxc5 Bxc5 34. Rd5 Qc6 35. Rbd3 Qc7 36. Qe2 a5 37. e5 fxe5 38. fxe5 Rde8 39. Qd2 Rxe5 40. Rxe5 Rxe5 41. Qf4 Qe7 42. Rd2 Be3 43. Qd4 Bxd2 44. Qxd2 g6 45. Kg2 Qc7 46. Qh6 Qe7 47. Qd2 Rc5 48. Qd4+ Qe5 49. Qd3 Kg7 50. Qb3 Qd4 51. Be2 Qe4+ 52. Kf2 Qd4+ 53. Kg2 Re5 54. Kf1 Qe3 55. Qxe3 Rxe3 56. Kf2 Ra3 57. Bd1 Kf6 58. Bc2 h6 59. Bd1 g5 60. Kg2 Ke5 61. Kf2 Kd4 0-1

[Event "Innsbruck op-B 3rd"]
[Site "Innsbruck"]
[Date "2019.08.25"]
[Round "1"]
[White "Vonach, Bernhard"]
[Black "Lachat, Martin"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "1866"]
[BlackElo "1625"]
[PlyCount "44"]
[EventDate "2019.08.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "AUT"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. Nf3 f5 2. b3 Nf6 3. Bb2 g6 4. e3 Bg7 5. d4 0-0 6. Ne5 e6 7. Nd2 d6 8. Nd3 Nc6 9. Be2 Bd7 10. h4 h5 11. Nf3 Nh7 12. Qd2 Qe8 13. 0-0-0 e5 14. dxe5 dxe5 15. Nfxe5 Rd8 16. Nxd7 Bxb2+ 17. Nxb2 Rf7 18. Bc4 Ne5 19. Nxe5 Rxd2 20. Bxf7+ Qxf7 21. Nxf7 Rxd1+ 22. Rxd1 Kxf7 1-0

[Event "RLP Seniors op 17th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2019.07.28"]
[Round "9"]
[White "Laber, Dietrich"]
[Black "Lachat, Martin"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1711"]
[BlackElo "1602"]
[PlyCount "43"]
[EventDate "2019.07.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 192 Extra"]
[Source "Chessbase"]
[SourceDate "2019.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2019.11.06"]
[SourceQuality "1"]

1. e4 d5 2. e5 c5 3. Nf3 Bg4 4. c3 Nc6 5. Bb5 Qc7 6. Bxc6+ Qxc6 7. 0-0 d4 8. Nxd4 Bxd1 9. Nxc6 Be2 10. Re1 Bb5 11. Na5 c4 12. Re4 Rc8 13. b3 cxb3 14. Nxb3 Bc4 15. Na3 Bd3 16. Rd4 Bf5 17. Bb2 e6 18. Nb5 Bc5 19. Nxc5 Rxc5 20. Nd6+ Ke7 21. Nxf5+ exf5 22. Ba3 1-0

[Event "RLP Seniors op 17th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2019.07.27"]
[Round "8"]
[White "Lachat, Martin"]
[Black "Loehr, Hans Gerd"]
[Result "0-1"]
[ECO "D35"]
[WhiteElo "1602"]
[BlackElo "1755"]
[PlyCount "64"]
[EventDate "2019.07.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 192 Extra"]
[Source "Chessbase"]
[SourceDate "2019.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2019.11.06"]
[SourceQuality "1"]

1. c4 e6 2. Nc3 Nf6 3. d4 d5 4. cxd5 exd5 5. e3 Be7 6. Nf3 0-0 7. Qc2 Nc6 8. a3 Re8 9. Be2 Bf8 10. 0-0 Ne7 11. b4 Bf5 12. Bd3 Qd7 13. Bxf5 Nxf5 14. Bb2 Nd6 15. Rac1 Nc4 16. Rfe1 a6 17. Rcd1 a5 18. bxa5 Bxa3 19. Bxa3 Nxa3 20. Qb3 Nc4 21. Ne5 Nxe5 22. dxe5 Rxe5 23. Ra1 c6 24. Reb1 d4 25. exd4 Qxd4 26. Rd1 Rae8 27. Kf1 Qf4 28. Ra4 Qxh2 29. f3 Qg3 30. Ne4 Nxe4 31. Rxe4 Rxe4 32. fxe4 Qxb3 0-1

[Event "RLP Seniors op 17th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2019.07.26"]
[Round "7"]
[White "Teutsch, Michael1111"]
[Black "Lachat, Martin"]
[Result "1-0"]
[ECO "A85"]
[WhiteElo "1790"]
[BlackElo "1602"]
[PlyCount "115"]
[EventDate "2019.07.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 192 Extra"]
[Source "Chessbase"]
[SourceDate "2019.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2019.11.06"]
[SourceQuality "1"]

1. d4 f5 2. c4 Nf6 3. Nc3 g6 4. e3 Bg7 5. Bd3 0-0 6. f3 d6 7. Nge2 c6 8. Bd2 Be6 9. Qc2 Bf7 10. 0-0 e5 11. Rad1 Nbd7 12. b4 Rc8 13. a4 exd4 14. exd4 Nb6 15. Nb1 d5 16. c5 Na8 17. Bc3 Qc7 18. Nd2 Rfe8 19. Rfe1 Re7 20. Nc1 Rce8 21. Rxe7 Rxe7 22. Nf1 Qd7 23. Nb3 Nc7 24. Qd2 Qe8 25. Re1 Rxe1 26. Qxe1 Qxe1 27. Bxe1 Nh5 28. g3 Ne6 29. Bc3 f4 30. g4 Nf6 31. b5 cxb5 32. axb5 Be8 33. Nfd2 g5 34. Nb1 h6 35. Na3 Kf7 36. Nc2 Nc7 37. b6 axb6 38. cxb6 Na8 39. Ba5 Nd7 40. Nc5 Naxb6 41. Nxb7 Bf8 42. Nd8+ Kg8 43. Bf5 Be7 44. Be6+ Kg7 45. Nc6 Bf6 46. Ne5 Bxe5 47. dxe5 Nc4 48. Bc3 Ndxe5 49. Bxd5 Bf7 50. Bxc4 Bxc4 51. Bxe5+ Kg6 52. Kf2 h5 53. Nd4 hxg4 54. fxg4 Kf7 55. Nf3 Kg6 56. Bc7 Be6 57. h3 Bd5 58. Bd8 1-0

[Event "RLP Seniors op 17th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2019.07.25"]
[Round "6"]
[White "Lachat, Martin"]
[Black "Leibfried, Peter"]
[Result "0-1"]
[ECO "D35"]
[WhiteElo "1602"]
[BlackElo "1882"]
[PlyCount "72"]
[EventDate "2019.07.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 192 Extra"]
[Source "Chessbase"]
[SourceDate "2019.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2019.11.06"]
[SourceQuality "1"]

1. c4 e6 2. Nc3 d5 3. cxd5 exd5 4. d4 Nf6 5. Bg5 c6 6. e3 Nbd7 7. Nf3 Bd6 8. g3 h6 9. Bxf6 Nxf6 10. Bg2 Bf5 11. 0-0 0-0 12. a3 Re8 13. b4 Qe7 14. Rc1 a5 15. Qb3 axb4 16. axb4 Bxb4 17. Ra1 Bxc3 18. Qxc3 Ne4 19. Qb2 Nd6 20. Nd2 Bd3 21. Rfc1 Nc4 22. Nxc4 Bxc4 23. Bf1 b5 24. Bg2 Qd6 25. Bf3 Qe7 26. Bg2 Rec8 27. Bf3 Qb7 28. Bd1 Rxa1 29. Rxa1 Ra8 30. Bg4 Ra6 31. Bd1 Qa7 32. Rxa6 Qxa6 33. Bb3 Qa5 34. Bxc4 dxc4 35. Kf1 c3 36. Qb1 Qa3 0-1

[Event "RLP Seniors op 17th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2019.07.24"]
[Round "5"]
[White "Giesau, Bernhard"]
[Black "Lachat, Martin"]
[Result "0-1"]
[ECO "A88"]
[WhiteElo "1819"]
[BlackElo "1602"]
[PlyCount "164"]
[EventDate "2019.07.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 192 Extra"]
[Source "Chessbase"]
[SourceDate "2019.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2019.11.06"]
[SourceQuality "1"]

1. Nf3 f5 2. c4 Nf6 3. Nc3 g6 4. Qc2 Bg7 5. g3 0-0 6. d4 c6 7. Bg2 d6 8. 0-0 Qc7 9. Bg5 e5 10. Bxf6 Bxf6 11. dxe5 dxe5 12. e4 f4 13. Rad1 Be6 14. b3 Nd7 15. Na4 Rad8 16. Qc1 fxg3 17. fxg3 Be7 18. Qc3 Bg4 19. h3 Bxf3 20. Bxf3 Nc5 21. Nb2 Ne6 22. Rxd8 Rxd8 23. b4 Nd4 24. Bg4 c5 25. a3 cxb4 26. axb4 b6 27. Kg2 Qc6 28. Re1 Qd6 29. b5 Rf8 30. Nd3 h5 31. Bd1 Qf6 32. Rh1 Bd6 33. Qd2 Qf7 34. Nf4 Bc5 35. Nd5 Nf3 36. Bxf3 Qxf3+ 37. Kh2 Qf2+ 38. Qxf2 Rxf2+ 39. Kg1 Rc2+ 40. Kf1 Rxc4 41. Ke2 Rc2+ 42. Kf1 Kf7 43. g4 h4 44. g5 Rb2 45. Nf6 Be7 46. Ng4 Ke6 47. Nf2 Rxb5 48. Ke2 Rb2+ 49. Kf3 Bxg5 50. Rf1 Rb3+ 51. Kg4 Bf6 52. Nh1 Be7 53. Rc1 Re3 54. Rc7 Rxe4+ 55. Kf3 Rf4+ 56. Ke2 a5 57. Rc6+ Kf5 58. Rxb6 Re4+ 59. Kf3 Bc5 60. Rb5 Re3+ 61. Kg2 Bb4 62. Rb7 Be1 63. Rc7 Re2+ 64. Kf1 Rh2 65. Kxe1 Rxh1+ 66. Kf2 Rxh3 67. Rc4 g5 68. Ra4 g4 69. Rxa5 g3+ 70. Kg1 Rh2 71. Ra8 Re2 72. Rg8 Kf4 73. Kf1 Ke3 74. Rh8 Rf2+ 75. Kg1 Rh2 76. Rg8 e4 77. Rf8 Ke2 78. Rg8 Rf2 79. Rg4 h3 80. Rxe4+ Kf3 81. Re1 h2+ 82. Kh1 g2+ 0-1

[Event "RLP Seniors op 17th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2019.07.23"]
[Round "4"]
[White "Lachat, Martin"]
[Black "Welsch, Roland"]
[Result "1/2-1/2"]
[ECO "D35"]
[WhiteElo "1602"]
[BlackElo "1811"]
[PlyCount "96"]
[EventDate "2019.07.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 192 Extra"]
[Source "Chessbase"]
[SourceDate "2019.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2019.11.06"]
[SourceQuality "1"]

1. c4 e6 2. Nc3 d5 3. cxd5 exd5 4. d4 Nf6 5. Bg5 Be7 6. e3 c6 7. Nf3 Bg4 8. Be2 0-0 9. Ne5 Bxe2 10. Qxe2 Nbd7 11. Nxd7 Qxd7 12. 0-0 Qe6 13. Bxf6 Qxf6 14. Qg4 Qd6 15. f4 f5 16. Qe2 Qe6 17. a3 Rae8 18. b4 a6 19. Rad1 Bf6 20. Rf3 Kh8 21. Rg3 Qf7 22. Qf3 Re6 23. Rd3 Rg8 24. Nd1 g5 25. fxg5 Bxg5 26. h4 Bxh4 27. Rxg8+ Kxg8 28. Nf2 Bxf2+ 29. Kxf2 Re4 30. g3 Qg6 31. Rd1 Qg4 32. Qxg4+ Rxg4 33. Rh1 Kg7 34. a4 Rg6 35. Kf3 Rh6 36. Rc1 b5 37. axb5 axb5 38. Kg2 Re6 39. Kf3 h5 40. Kf4 Kg6 41. Ra1 Re4+ 42. Kf3 Kg5 43. Rc1 Re6 44. Rh1 Re8 45. Rc1 Rc8 46. Rh1 Ra8 47. Rc1 Ra6 48. Rc2 Rb6 1/2-1/2

[Event "RLP Seniors op 17th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2019.07.22"]
[Round "3"]
[White "Pfaff, Helmut"]
[Black "Lachat, Martin"]
[Result "0-1"]
[ECO "A10"]
[WhiteElo "1314"]
[BlackElo "1602"]
[PlyCount "70"]
[EventDate "2019.07.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 192 Extra"]
[Source "Chessbase"]
[SourceDate "2019.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2019.11.06"]
[SourceQuality "1"]

1. c4 f5 2. e3 Nf6 3. d3 g6 4. Nc3 Bg7 5. Be2 0-0 6. e4 d6 7. Bf3 c6 8. Nge2 e5 9. d4 exd4 10. Nxd4 fxe4 11. Nxe4 Nxe4 12. Bxe4 Re8 13. f3 d5 14. Qd3 dxe4 15. fxe4 Qxd4 16. Qxd4 Bxd4 17. Rf1 Rxe4+ 18. Kd2 Be6 19. Kd3 Bf5 20. Rb1 Rf4+ 21. Ke2 Rxf1 22. Ra1 Bxb2 23. Bxb2 Rxa1 24. Bxa1 Nd7 25. Bd4 Re8+ 26. Kf2 Re4 27. Bxa7 Rxc4 28. a3 Ra4 29. Be3 Rxa3 30. Bg5 b5 31. h3 b4 32. Ke1 b3 33. Kd2 b2 34. g4 b1Q 35. gxf5 Qxf5 0-1

[Event "RLP Seniors op 17th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2019.07.21"]
[Round "2"]
[White "Lachat, Martin"]
[Black "Scholz, Herbert"]
[Result "0-1"]
[ECO "A21"]
[WhiteElo "1602"]
[BlackElo "1829"]
[PlyCount "60"]
[EventDate "2019.07.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 192 Extra"]
[Source "Chessbase"]
[SourceDate "2019.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2019.11.06"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Bb4 3. a3 Bxc3 4. bxc3 d6 5. e4 Nf6 6. d3 0-0 7. Nf3 c5 8. Be2 Nc6 9. 0-0 h6 10. h3 Be6 11. Nh2 Nh7 12. Bg4 f5 13. exf5 Bxf5 14. Bxf5 Rxf5 15. Qg4 Rf6 16. Qg3 Ne7 17. Ng4 Rg6 18. Qf3 b6 19. Qe2 h5 20. Nh2 Nf6 21. f4 Qd7 22. fxe5 dxe5 23. Qf3 Rd8 24. Be3 Qe6 25. Rad1 Re8 26. Rde1 e4 27. dxe4 Qxe4 28. Bf4 Qxc4 29. Qb7 Nfd5 30. Bd6 Rxd6 0-1

[Event "RLP Seniors op 17th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2019.07.20"]
[Round "1"]
[White "Bachmann, Rolf"]
[Black "Lachat, Martin"]
[Result "1-0"]
[ECO "A86"]
[WhiteElo "1963"]
[BlackElo "1602"]
[PlyCount "99"]
[EventDate "2019.07.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 192 Extra"]
[Source "Chessbase"]
[SourceDate "2019.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2019.11.06"]
[SourceQuality "1"]

1. c4 f5 2. Nc3 Nf6 3. g3 g6 4. Bg2 Bg7 5. f4 0-0 6. Nf3 d6 7. d4 c6 8. 0-0 Qc7 9. Qd3 e6 10. b3 Re8 11. Bb2 Nbd7 12. Nd2 e5 13. e3 e4 14. Qe2 Nf8 15. Rfc1 a6 16. a4 Bd7 17. b4 Rec8 18. a5 Qd8 19. Na4 Rab8 20. Nb6 Rc7 21. Bf1 Be8 22. Qd1 c5 23. bxc5 dxc5 24. d5 N8d7 25. Na4 Bf7 26. Rab1 Ne8 27. Ba3 Nd6 28. Qc2 Nc8 29. Nb3 Bf8 30. Be2 b5 31. axb6 Ncxb6 32. Na5 Qc8 33. Nc6 Rbb7 34. Bb2 Nxa4 35. Qxa4 Rb6 36. Be5 Rxb1 37. Rxb1 Nxe5 38. fxe5 Rb7 39. Ra1 Be8 40. Qd1 Bxc6 41. dxc6 Qxc6 42. Qd5+ Qxd5 43. cxd5 Bg7 44. Rxa6 Bxe5 45. Re6 Bg7 46. Rc6 Bf8 47. d6 Rd7 48. Bc4+ Kh8 49. Rc8 Kg7 50. Rc7 1-0

[Event "Rheinland Pfalz op Seniors 16th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2018.07.15"]
[Round "9"]
[White "Lachat, Martin"]
[Black "Bachmann, Rolf"]
[Result "0-1"]
[ECO "D85"]
[WhiteElo "1647"]
[BlackElo "1936"]
[PlyCount "46"]
[EventDate "2018.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 Nf6 2. d4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. Nxd5 Qxd5 6. b3 Bg7 7. Bb2 0-0 8. e3 c5 9. Nf3 cxd4 10. Qd2 Nc6 11. Bc4 Qe4 12. 0-0 dxe3 13. fxe3 Bxb2 14. Qxb2 Qxe3+ 15. Qf2 Qxf2+ 16. Rxf2 Kg7 17. Ng5 f6 18. Ne4 Ne5 19. Rd1 Bg4 20. Rd4 Rad8 21. Rfd2 Nc6 22. Rxd8 Rxd8 23. Bd5 e6 0-1

[Event "Rheinland Pfalz op Seniors 16th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2018.07.14"]
[Round "8"]
[White "Reimer, Karl"]
[Black "Lachat, Martin"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "1507"]
[BlackElo "1647"]
[PlyCount "116"]
[EventDate "2018.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. b4 f5 2. Bb2 Nf6 3. c4 g6 4. Nc3 Bg7 5. Nd5 0-0 6. Nxf6+ Bxf6 7. Bxf6 Rxf6 8. Qb3 e6 9. e3 c6 10. d4 d5 11. Nf3 Qc7 12. Be2 Nd7 13. 0-0 Kg7 14. Rac1 Qd6 15. c5 Qc7 16. a4 e5 17. dxe5 Nxe5 18. Nxe5 Qxe5 19. Qc3 Qxc3 20. Rxc3 Bd7 21. Rfc1 Re6 22. Kf1 Rae8 23. Rd1 f4 24. Bg4 R6e7 25. Bxd7 Rxd7 26. exf4 Re4 27. b5 Rxf4 28. bxc6 bxc6 29. Ra1 Re7 30. g3 Rb4 31. f3 Re8 32. Kg2 Rb2+ 33. Kg1 Ree2 34. h4 Rg2+ 35. Kf1 Rxg3 36. Re3 Rh3 37. Kg1 Kf7 38. Rae1 Rb7 39. Re6 Rc7 40. Kg2 Rxh4 41. Rd6 Rc4 42. Ree6 Rxc5 43. Rf6+ Kg7 44. Rfe6 Ra5 45. Rxc6 Rxc6 46. Rxc6 Rxa4 47. Rd6 Ra5 48. Kg3 h5 49. Kf4 Kh6 50. Ke5 h4 51. f4 h3 52. f5 d4+ 53. Kxd4 Rxf5 54. Ke4 h2 55. Rd1 Rh5 56. Rh1 a5 57. Kd3 g5 58. Ke3 a4 0-1

[Event "Rheinland Pfalz op Seniors 16th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2018.07.13"]
[Round "7"]
[White "Lachat, Martin"]
[Black "Zwissler, Erich"]
[Result "1-0"]
[ECO "A29"]
[WhiteElo "1647"]
[BlackElo "1614"]
[PlyCount "95"]
[EventDate "2018.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 Bg4 8. Bg2 Bc5 9. 0-0 0-0 10. d3 Qd6 11. Qe2 Rad8 12. Rd1 Qe6 13. Be3 Bxe3 14. Qxe3 Qf6 15. Rab1 b6 16. Rd2 Bxf3 17. Bxf3 Rd6 18. Rb5 a6 19. Rb1 Rfd8 20. Be2 Qh6 21. Qxh6 Rxh6 22. Rbd1 Rhd6 23. f4 f6 24. fxe5 fxe5 25. Kf2 Rf8+ 26. Ke3 Rfd8 27. d4 exd4+ 28. cxd4 b5 29. e5 Re8 30. Bf3 Na5 31. Kf2 Rdd8 32. Rc2 Re7 33. Rc5 Rf8 34. Ke2 c6 35. Bxc6 Nxc6 36. Rxc6 Ref7 37. Rxa6 Rf2+ 38. Kd3 Rxh2 39. Rd2 Rh3 40. Rg2 h5 41. Ke4 Rh1 42. Ra3 Rb1 43. Rb3 Re1+ 44. Re3 Rb1 45. Rge2 Kh7 46. Rh2 g6 47. d5 Rb4+ 48. Kd3 1-0

[Event "Rheinland Pfalz op Seniors 16th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2018.07.12"]
[Round "6"]
[White "Costea, Valerius"]
[Black "Lachat, Martin"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "1865"]
[BlackElo "1647"]
[PlyCount "61"]
[EventDate "2018.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 c6 5. Bc4 Nf6 6. Nge2 Bf5 7. Ng3 Bg6 8. 0-0 Qc7 9. Nce2 Nh5 10. c3 Nxg3 11. Nxg3 e6 12. Be3 Be7 13. Re1 0-0 14. Qf3 Rd8 15. Rad1 Bd6 16. Bg5 Re8 17. h4 h6 18. h5 Bxg3 19. fxg3 Bxh5 20. Qxh5 hxg5 21. Qxg5 Qd8 22. Qh5 Nd7 23. Bd3 Nf6 24. Qh4 g6 25. Rf1 Kg7 26. Qf4 Qe7 27. Rde1 Rh8 28. Re5 Rh5 29. Rxh5 Nxh5 30. Qe5+ Nf6 31. g4 1-0

[Event "Rheinland Pfalz op Seniors 16th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2018.07.11"]
[Round "5"]
[White "Lachat, Martin"]
[Black "Hiller, Joachim"]
[Result "0-1"]
[ECO "D35"]
[WhiteElo "1647"]
[BlackElo "1938"]
[PlyCount "47"]
[EventDate "2018.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 Nf6 2. d4 e6 3. Nc3 d5 4. cxd5 exd5 5. g3 c6 6. Nf3 Bd6 7. Bg2 0-0 8. 0-0 Re8 9. Bg5 h6 10. Bxf6 Qxf6 11. Re1 Bf5 12. Qd3 Nd7 13. Rac1 Nb6 14. b3 a5 15. a4 Bb4 16. Qd1 Ba3 17. Ne5 Bxc1 18. Qxc1 Nd7 19. f4 Nxe5 20. fxe5 Qe7 21. e4 dxe4 22. Bxe4 Be6 23. Bc2 Qb4 24. Ne4 0-1

[Event "Rheinland Pfalz op Seniors 16th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2018.07.10"]
[Round "4"]
[White "Girbig, Joachim"]
[Black "Lachat, Martin"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "1659"]
[BlackElo "1647"]
[PlyCount "126"]
[EventDate "2018.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. f4 f5 2. Nf3 Nf6 3. g3 d6 4. Bg2 g6 5. 0-0 Bg7 6. d3 0-0 7. c3 c6 8. Be3 Ng4 9. Qb3+ Kh8 10. Bd2 Qb6+ 11. d4 Qxb3 12. axb3 e5 13. h3 e4 14. hxg4 exf3 15. Bxf3 fxg4 16. Bg2 d5 17. Na3 Bf5 18. Rae1 Re8 19. Rf2 Nd7 20. e3 Nf6 21. c4 Ne4 22. Bxe4 Bxe4 23. c5 Rf8 24. Ba5 Rf7 25. Nc2 h6 26. Rh2 Re8 27. Bc3 Rfe7 28. Na3 Kh7 29. Kf2 Bf6 30. b4 a6 31. Bd2 g5 32. Rg1 gxf4 33. gxf4 Rg8 34. Kg3 Kg6 35. Nb1 h5 36. Nc3 Bf5 37. Re1 Rh8 38. Rhe2 h4+ 39. Kh2 g3+ 40. Kg2 Bd3 41. e4 Bxe2 42. Rxe2 dxe4 43. d5 cxd5 44. Nxd5 h3+ 45. Kxg3 Bh4+ 46. Kxh3 Rf7 47. Kg4 Bd8 48. f5+ Rxf5 49. Nf4+ Rxf4+ 50. Kxf4 Rh4+ 51. Kg3 Kh5 52. Bf4 Rg4+ 53. Kf2 Rxf4+ 54. Ke3 Kg5 55. Rd2 Bf6 56. Rd7 Bxb2 57. Rxb7 Bc1+ 58. Ke2 Rf6 59. Rb6 Rxb6 60. cxb6 Kf5 61. b7 Bf4 62. Kd1 Ke6 63. Kc2 Kd7 0-1

[Event "Rheinland Pfalz op Seniors 16th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2018.07.09"]
[Round "3"]
[White "Lachat, Martin"]
[Black "Samarian, Cornel"]
[Result "1/2-1/2"]
[ECO "A25"]
[WhiteElo "1647"]
[BlackElo "1658"]
[PlyCount "30"]
[EventDate "2018.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 d6 4. g3 g6 5. Bg2 Bg7 6. 0-0 Nge7 7. e3 0-0 8. d4 exd4 9. exd4 Bg4 10. Ne2 Qc8 11. Re1 Re8 12. d5 Ne5 13. Nxe5 Bxe5 14. Qb3 Rb8 15. Bf4 Bxf4 1/2-1/2

[Event "Rheinland Pfalz op Seniors 16th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2018.07.08"]
[Round "2"]
[White "Schwenke, Norbert"]
[Black "Lachat, Martin"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "1597"]
[BlackElo "1647"]
[PlyCount "50"]
[EventDate "2018.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nc3 f5 2. e4 fxe4 3. Nxe4 Nf6 4. Ng3 g6 5. Nf3 Bg7 6. c3 0-0 7. d4 d6 8. h3 c6 9. Bd3 Qc7 10. 0-0 e6 11. Re1 Nd5 12. Ng5 e5 13. Qc2 Ne7 14. Re4 Nf5 15. Nxf5 Bxf5 16. Rh4 h6 17. Bxf5 Rxf5 18. Ne6 Qe7 19. Nxg7 Qxg7 20. Rxh6 exd4 21. cxd4 Nd7 22. Qe2 Kf7 23. Rh4 d5 24. Be3 Re8 25. Qd3 Nf8 1/2-1/2

[Event "Rheinland Pfalz op Seniors 16th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2018.07.07"]
[Round "1"]
[White "Lachat, Martin"]
[Black "Pfitzer, Norbert"]
[Result "0-1"]
[ECO "A39"]
[WhiteElo "1647"]
[BlackElo "2040"]
[PlyCount "92"]
[EventDate "2018.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 Nf6 3. Nf3 g6 4. g3 Bg7 5. Bg2 0-0 6. 0-0 Nc6 7. d4 Nxd4 8. Nxd4 cxd4 9. Qxd4 d6 10. Bg5 Qa5 11. Qd2 Qc5 12. Rac1 Re8 13. Bxf6 Bxf6 14. Ne4 Qd4 15. Nxf6+ Qxf6 16. Rfd1 Rb8 17. Qd4 Qxd4 18. Rxd4 b6 19. b4 Be6 20. Bd5 Rec8 21. e4 Bh3 22. b5 Rc7 23. Bc6 a5 24. a4 Kg7 25. f4 Bc8 26. e5 dxe5 27. fxe5 Bb7 28. Bxb7 Rbxb7 29. Kf2 Rc5 30. Re1 Rbc7 31. Ree4 Kf8 32. Ke3 Ke8 33. Kd3 Rd7 34. e6 Rxd4+ 35. Kxd4 f6 36. g4 Kd8 37. Kc3 Re5 38. Kd4 Rc5 39. Kc3 Ke8 40. Kd4 Kf8 41. Kc3 Kg7 42. h4 f5 43. gxf5 gxf5 44. Rd4 Kf6 45. Rd5 Rxd5 46. cxd5 Ke5 0-1

[Event "AUT-ch Seniors 65"]
[Site "Deutschlandsberg"]
[Date "2018.04.27"]
[Round "6"]
[White "Lachat, Martin"]
[Black "Goeslbauer, Harald"]
[Result "1/2-1/2"]
[ECO "D13"]
[WhiteElo "1639"]
[BlackElo "1821"]
[PlyCount "87"]
[EventDate "2018.04.22"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "AUT"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. c4 c6 2. d4 d5 3. cxd5 cxd5 4. Nf3 Nc6 5. Nc3 Nf6 6. g3 e6 7. Bg2 a6 8. 0-0 b5 9. a3 Bb7 10. b4 Be7 11. Bb2 0-0 12. Rc1 Rc8 13. Re1 Nb8 14. Ne5 Nbd7 15. Nd3 Nb6 16. Nc5 Rc7 17. Rc2 Qa8 18. Nxb7 Qxb7 19. Qd3 Rfc8 20. Bc1 Nc4 21. Nb1 Ne4 22. Bf4 Bd6 23. Bxd6 Ncxd6 24. Rec1 Rc4 25. Nd2 Nxd2 26. Qxd2 R8c7 27. e3 Qc8 28. Rxc4 bxc4 29. Rc2 f5 30. f3 c3 31. Qc1 g5 32. Bf1 Kf7 33. Kf2 h5 34. Ke2 g4 35. Kd3 a5 36. Rxc3 Rxc3+ 37. Qxc3 Qa6+ 38. Kc2 Qxf1 39. Qc7+ Kf6 40. Qxd6 Qe2+ 41. Kb1 Qd1+ 42. Kb2 Qd2+ 43. Kb1 Qd3+ 44. Kb2 1/2-1/2

[Event "AUT-ch Seniors 65"]
[Site "Deutschlandsberg"]
[Date "2018.04.26"]
[Round "5"]
[White "Koestenbauer, Hans"]
[Black "Lachat, Martin"]
[Result "1-0"]
[ECO "A80"]
[WhiteElo "1748"]
[BlackElo "1639"]
[PlyCount "49"]
[EventDate "2018.04.22"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "AUT"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. d4 f5 2. Bg5 Nf6 3. e3 g6 4. Be2 Bg7 5. h4 h6 6. Bf4 d6 7. c4 0-0 8. Nc3 Nbd7 9. g4 fxg4 10. Bxg4 Nxg4 11. Qxg4 Ne5 12. Qe2 Nc6 13. 0-0-0 e5 14. dxe5 Nxe5 15. c5 Nf7 16. Qc2 Bf5 17. Qb3 Bxc3 18. bxc3 g5 19. hxg5 hxg5 20. Bg3 Kg7 21. cxd6 cxd6 22. Qb4 Qe7 23. Bxd6 Nxd6 24. Qxd6 Qf7 25. Qh6+ 1-0

[Event "AUT-ch Seniors 65"]
[Site "Deutschlandsberg"]
[Date "2018.04.24"]
[Round "3"]
[White "Toefferl, Heimo"]
[Black "Lachat, Martin"]
[Result "1-0"]
[ECO "A81"]
[WhiteElo "2135"]
[BlackElo "1639"]
[PlyCount "57"]
[EventDate "2018.04.22"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "AUT"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. d4 f5 2. g3 g6 3. h4 h6 4. Nh3 e6 5. Bg2 Bg7 6. e4 d6 7. c3 Nc6 8. Nd2 Bd7 9. exf5 exf5 10. 0-0 Nge7 11. Re1 Qc8 12. b4 Bf6 13. Nc4 Kf7 14. Qb3 Kg7 15. Nf4 Nd8 16. Bd2 Ne6 17. Nd3 Rb8 18. d5 Nd8 19. Be3 Ra8 20. Re2 Nf7 21. Rae1 Re8 22. Bd4 Qd8 23. Nf4 Bxd4 24. cxd4 Kg8 25. Ne6 Qc8 26. Qc2 b6 27. Nd2 Bxe6 28. dxe6 Nd8 29. Bxa8 1-0

[Event "AUT-ch Seniors 65"]
[Site "Deutschlandsberg"]
[Date "2018.04.23"]
[Round "2"]
[White "Lachat, Martin"]
[Black "Verhoef, Jaap"]
[Result "1/2-1/2"]
[ECO "A31"]
[WhiteElo "1639"]
[BlackElo "1967"]
[PlyCount "56"]
[EventDate "2018.04.22"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "AUT"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. c4 Nf6 2. d4 c5 3. Nf3 cxd4 4. Nxd4 e5 5. Nf3 e4 6. Nd4 d5 7. Bg5 dxc4 8. Qa4+ Bd7 9. Qxc4 Nc6 10. Nc3 Qb6 11. Bxf6 gxf6 12. Nb3 f5 13. Nd5 Bb4+ 14. Nxb4 Nxb4 15. a3 Nc6 16. Qc3 Ke7 17. Qc5+ Qxc5 18. Nxc5 Rhc8 19. e3 Ne5 20. Nxd7 Kxd7 21. Bb5+ Ke7 22. 0-0 a6 23. Ba4 b5 24. Bb3 Nd3 25. f3 f4 26. fxe4 fxe3 27. Rxf7+ Ke8 28. Rf3 Nxb2 1/2-1/2

[Event "AUT-ch Seniors 65"]
[Site "Deutschlandsberg"]
[Date "2018.04.22"]
[Round "1"]
[White "Lachat, Martin"]
[Black "Frey, Armin"]
[Result "0-1"]
[ECO "A21"]
[WhiteElo "1639"]
[BlackElo "1869"]
[PlyCount "32"]
[EventDate "2018.04.22"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "AUT"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. c4 f5 2. Nc3 e5 3. e4 d6 4. d4 exd4 5. Qxd4 Nc6 6. Qd1 Nf6 7. exf5 Bxf5 8. Bd3 Qd7 9. Bg5 Be7 10. Bxf6 Bxf6 11. Qh5+ g6 12. Qe2+ Kf7 13. Qd2 Bxd3 14. Qxd3 Nb4 15. Qd2 Qf5 16. Kd1 Bg5 0-1

[Event "Schleswig Holstein-ch Seniors op 11th"]
[Site "Buesum"]
[Date "2017.09.16"]
[Round "9"]
[White "Lachat, Martin"]
[Black "Lueders, Guenter"]
[Result "1/2-1/2"]
[ECO "A39"]
[WhiteElo "1636"]
[BlackElo "1796"]
[PlyCount "69"]
[EventDate "2017.09.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 Nc6 3. Nf3 Nf6 4. g3 g6 5. Bg2 Bg7 6. 0-0 0-0 7. d4 cxd4 8. Nxd4 a6 9. Nxc6 dxc6 10. Bg5 Qc7 11. Qc2 Be6 12. b3 Rad8 13. Rad1 h6 14. Bf4 Qc8 15. Rxd8 Rxd8 16. Rd1 Ne8 17. Rxd8 Qxd8 18. Qd2 Qxd2 19. Bxd2 h5 20. Ne4 Bd4 21. Bc3 Bxc3 22. Nxc3 Nf6 23. Ne4 Nxe4 24. Bxe4 f5 25. Bd3 Kg7 26. e4 fxe4 27. Bxe4 Bf5 28. Bxf5 gxf5 29. f4 Kf6 30. Kf2 c5 31. Ke3 a5 32. a4 b6 33. Kd3 e6 34. Ke3 Kg6 35. h4 1/2-1/2

[Event "Schleswig Holstein-ch Seniors op 11th"]
[Site "Buesum"]
[Date "2017.09.15"]
[Round "8"]
[White "Schmieder, Wolfgang Ernst"]
[Black "Lachat, Martin"]
[Result "1/2-1/2"]
[ECO "A04"]
[WhiteElo "1800"]
[BlackElo "1636"]
[PlyCount "66"]
[EventDate "2017.09.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. g3 f5 2. b3 g6 3. Bb2 Nf6 4. Bg2 Bg7 5. Nf3 0-0 6. h4 h6 7. e3 d6 8. d4 c6 9. Nbd2 Qc7 10. c4 Ng4 11. Nh2 Nxh2 12. Rxh2 e5 13. d5 Nd7 14. Qc2 Nf6 15. dxc6 bxc6 16. f3 Be6 17. 0-0-0 Rac8 18. Kb1 Nh5 19. Nf1 Qf7 20. Bh3 d5 21. c5 Rb8 22. g4 fxg4 23. Bxg4 Bf5 24. e4 dxe4 25. Bxf5 Qxf5 26. fxe4 Qf4 27. Bc1 Qf7 28. Rhd2 Qe7 29. Qc4+ Kh7 30. Rd7 Qxh4 31. Rxa7 Rbd8 32. Rdd7 Rxd7 33. Rxd7 Nf6 1/2-1/2

[Event "Schleswig Holstein-ch Seniors op 11th"]
[Site "Buesum"]
[Date "2017.09.14"]
[Round "7"]
[White "Lachat, Martin"]
[Black "Aigner, Georg"]
[Result "0-1"]
[ECO "A22"]
[WhiteElo "1636"]
[BlackElo "1898"]
[PlyCount "44"]
[EventDate "2017.09.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 d6 4. g3 Be6 5. b3 Nc6 6. Bg2 Qd7 7. 0-0 Bh3 8. d4 Bxg2 9. Kxg2 exd4 10. Nxd4 Be7 11. Nxc6 Qxc6+ 12. Kg1 0-0-0 13. Bb2 d5 14. Nb5 Kb8 15. Nd4 Qd7 16. cxd5 Qxd5 17. Qc2 c6 18. Rfd1 Qh5 19. Qf5 Rxd4 20. Qxh5 Rxd1+ 21. Rxd1 Nxh5 22. Rd7 Re8 0-1

[Event "Schleswig Holstein-ch Seniors op 11th"]
[Site "Buesum"]
[Date "2017.09.13"]
[Round "6"]
[White "Lachat, Martin"]
[Black "Eschweiler, Gottfried"]
[Result "1-0"]
[ECO "E68"]
[WhiteElo "1636"]
[BlackElo "1766"]
[PlyCount "103"]
[EventDate "2017.09.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. Nf3 d6 4. d4 Nbd7 5. g3 Bg7 6. Bg2 0-0 7. 0-0 Re8 8. b3 e5 9. dxe5 dxe5 10. Qc2 c6 11. e4 Qc7 12. Bb2 Nh5 13. Rfe1 b6 14. Rad1 Nhf6 15. Ba3 Bf8 16. Bxf8 Nxf8 17. Qd2 Qd7 18. Qd6 Re6 19. Qxd7 N8xd7 20. Bh3 Re7 21. Rd6 Bb7 22. Red1 Bc8 23. Rxc6 Kg7 24. Rc7 h5 25. Nd5 Re8 26. Bxd7 Nxd7 27. Nc3 Nf6 28. Ng5 Rf8 29. Nd5 Nh7 30. Nxh7 Kxh7 31. Re7 Be6 32. Nc7 Bg4 33. Rd5 Rad8 34. Rexe5 Rxd5 35. Nxd5 Kg7 36. Kg2 Rd8 37. f3 Be6 38. Kf2 Rd6 39. Nc7 Rc6 40. Nxe6+ fxe6 41. Ke3 Kf6 42. f4 a6 43. h3 Rd6 44. g4 hxg4 45. hxg4 Rd1 46. g5+ Kf7 47. f5 exf5 48. exf5 gxf5 49. Rxf5+ Kg6 50. Rf6+ Kxg5 51. Rxb6 Re1+ 52. Kd2 1-0

[Event "Schleswig Holstein-ch Seniors op 11th"]
[Site "Buesum"]
[Date "2017.09.12"]
[Round "5"]
[White "Krneta, Slavko"]
[Black "Lachat, Martin"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1810"]
[BlackElo "1636"]
[PlyCount "67"]
[EventDate "2017.09.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 d5 2. e5 Bf5 3. f4 e6 4. Nf3 Ne7 5. c3 Ng6 6. d4 Be7 7. Bd3 Bxd3 8. Qxd3 Qd7 9. Be3 0-0 10. 0-0 a6 11. g4 Nh4 12. Nbd2 Qb5 13. Qxb5 axb5 14. Kf2 Nd7 15. Nxh4 Bxh4+ 16. Kf3 f6 17. Ke2 fxe5 18. fxe5 Rxf1 19. Kxf1 Be7 20. Ke2 b6 21. Kd3 c5 22. Kc2 c4 23. Nf3 Nf8 24. Bd2 h6 25. b3 Ng6 26. a4 bxa4 27. bxc4 dxc4 28. Rb1 a3 29. Bc1 Rf8 30. Nd2 Rf2 31. Rxb6 Nf4 32. Ra6 Nd3 33. Ra8+ Kf7 34. Rxa3 0-1

[Event "Schleswig Holstein-ch Seniors op 11th"]
[Site "Buesum"]
[Date "2017.09.11"]
[Round "4"]
[White "Lachat, Martin"]
[Black "Mewes, Hans Dieter"]
[Result "0-1"]
[ECO "A31"]
[WhiteElo "1636"]
[BlackElo "1845"]
[PlyCount "36"]
[EventDate "2017.09.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 Nc6 3. Nf3 Nf6 4. g3 d6 5. Bg2 g6 6. 0-0 Bg7 7. d4 cxd4 8. Nxd4 Bd7 9. Nxc6 Bxc6 10. Qc2 0-0 11. b3 Bxg2 12. Kxg2 Rc8 13. Bb2 Qd7 14. Rad1 Qc6+ 15. Kg1 a6 16. Nd5 Nxd5 17. Bxg7 Kxg7 18. Rxd5 Qxd5 0-1

[Event "Schleswig Holstein-ch Seniors op 11th"]
[Site "Buesum"]
[Date "2017.09.10"]
[Round "3"]
[White "Bendisch, Juergen"]
[Black "Lachat, Martin"]
[Result "1-0"]
[ECO "A88"]
[WhiteElo "1903"]
[BlackElo "1636"]
[PlyCount "71"]
[EventDate "2017.09.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 f5 2. g3 g6 3. Bg2 Nf6 4. c4 Bg7 5. Nc3 0-0 6. Nf3 c6 7. 0-0 d6 8. e3 Qc7 9. Qc2 e5 10. dxe5 dxe5 11. Rd1 Be6 12. Qe2 Nbd7 13. Bd2 Rad8 14. Be1 Nc5 15. Ng5 Bc8 16. Rxd8 Rxd8 17. Rd1 Rxd1 18. Qxd1 Qd7 19. Qxd7 Bxd7 20. Bf1 Ne6 21. Nxe6 Bxe6 22. b3 Kf7 23. Bd2 Nd7 24. Be2 Ke7 25. Kf1 e4 26. Ke1 Kd6 27. Kd1 Nb6 28. Kc2 Bf6 29. f3 exf3 30. Bxf3 Bg5 31. Ne2 Bf7 32. Nf4 Bf6 33. e4 fxe4 34. Bxe4 Be5 35. Nd3 Bf6 36. c5+ 1-0

[Event "Schleswig Holstein-ch Seniors op 11th"]
[Site "Buesum"]
[Date "2017.09.09"]
[Round "2"]
[White "Lachat, Martin"]
[Black "Erhart, Uwe"]
[Result "1/2-1/2"]
[ECO "A39"]
[WhiteElo "1636"]
[BlackElo "2035"]
[PlyCount "29"]
[EventDate "2017.09.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 Nf6 3. Nf3 g6 4. g3 Bg7 5. Bg2 0-0 6. 0-0 Nc6 7. d4 cxd4 8. Nxd4 Nxd4 9. Qxd4 d6 10. Qd1 Rb8 11. b3 Bf5 12. Bb2 Qd7 13. Qd2 Bh3 14. Rad1 Bxg2 15. Kxg2 1/2-1/2

[Event "Schleswig Holstein-ch Seniors op 11th"]
[Site "Buesum"]
[Date "2017.09.08"]
[Round "1"]
[White "Baerthel, Klaus"]
[Black "Lachat, Martin"]
[Result "1/2-1/2"]
[ECO "B01"]
[WhiteElo "1938"]
[BlackElo "1636"]
[PlyCount "50"]
[EventDate "2017.09.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 c6 5. Nf3 Bf5 6. Bd2 Qc7 7. g3 e6 8. Bf4 Bd6 9. Bxd6 Qxd6 10. Qd2 Nf6 11. Bg2 Ne4 12. Nxe4 Bxe4 13. 0-0 Nd7 14. Rfe1 Nf6 15. c3 0-0 16. Qe3 Rad8 17. Re2 Qd5 18. Nh4 Bxg2 19. Nxg2 Ng4 20. Qe4 Qxe4 21. Rxe4 Nf6 22. Re2 Rd7 23. Nf4 Rfd8 24. Rae1 Nd5 25. Nxd5 Rxd5 1/2-1/2

[Event "Rheinland Pfalz op Seniors 15th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2017.07.23"]
[Round "9"]
[White "Klaus, Rainer"]
[Black "Lachat, Martin"]
[Result "1-0"]
[ECO "A82"]
[WhiteElo "1895"]
[BlackElo "1631"]
[PlyCount "43"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 f5 2. Nc3 g6 3. e4 d6 4. Bd3 fxe4 5. Nxe4 Bg7 6. Nf3 Nf6 7. h3 0-0 8. 0-0 c6 9. Re1 Qc7 10. Bg5 Nbd7 11. Qd2 Nxe4 12. Bxe4 e5 13. dxe5 Nxe5 14. Nxe5 Bxe5 15. Bh6 Bg7 16. Bxg7 Qxg7 17. Qxd6 Qxb2 18. Bd3 Qf6 19. Bc4+ Kh8 20. Qxf6+ Rxf6 21. Re8+ Kg7 22. Rae1 1-0

[Event "Rheinland Pfalz op Seniors 15th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2017.07.22"]
[Round "8"]
[White "Lachat, Martin"]
[Black "Ehlert, Horst"]
[Result "0-1"]
[ECO "A37"]
[WhiteElo "1631"]
[BlackElo "1936"]
[PlyCount "40"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 Nc6 3. Nf3 g6 4. g3 Bg7 5. Bg2 e6 6. 0-0 Nge7 7. d3 0-0 8. a3 Rb8 9. e3 d5 10. cxd5 exd5 11. d4 c4 12. b3 b5 13. bxc4 bxc4 14. Nd2 Bf5 15. e4 dxe4 16. Nxc4 Qxd4 17. Qxd4 Nxd4 18. Bf4 Rbc8 19. Bd6 Rxc4 20. Bxe7 Re8 0-1

[Event "Rheinland Pfalz op Seniors 15th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2017.07.21"]
[Round "7"]
[White "Lachat, Martin"]
[Black "Krebs, Dietmar"]
[Result "1/2-1/2"]
[ECO "A39"]
[WhiteElo "1631"]
[BlackElo "1998"]
[PlyCount "67"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 Nc6 3. Nf3 g6 4. d4 cxd4 5. Nxd4 Bg7 6. e3 Nf6 7. g3 a6 8. Bg2 0-0 9. 0-0 Qc7 10. Nxc6 dxc6 11. Qc2 Be6 12. b3 Rad8 13. Bb2 Qc8 14. Rad1 Bh3 15. Rxd8 Rxd8 16. Rd1 Bxg2 17. Kxg2 h5 18. Rxd8+ Qxd8 19. Ne2 Qd6 20. Nd4 c5 21. Nf3 Qc6 22. Qd1 Nd7 23. Bxg7 Kxg7 24. Kg1 f6 25. h4 Qd6 26. Qxd6 exd6 27. Kf1 Kf7 28. Ke2 Ke6 29. e4 Nb8 30. Ke3 Nc6 31. a3 Na5 32. Nd2 b5 33. f3 bxc4 34. bxc4 1/2-1/2

[Event "Rheinland Pfalz op Seniors 15th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2017.07.20"]
[Round "6"]
[White "Hellwege, Werner"]
[Black "Lachat, Martin"]
[Result "0-1"]
[ECO "A85"]
[WhiteElo "1939"]
[BlackElo "1631"]
[PlyCount "38"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 f5 2. Nf3 g6 3. c4 Nf6 4. Nc3 Bg7 5. Bf4 0-0 6. e3 d6 7. Bd3 c6 8. 0-0 Nh5 9. Bg5 Qc7 10. d5 e5 11. dxe6 Bxe6 12. Nd4 Bf7 13. g4 fxg4 14. Qxg4 Qd7 15. Qxd7 Nxd7 16. Be7 Rfe8 17. Bxd6 Ne5 18. Be2 Nxc4 19. b3 Nxd6 0-1

[Event "Rheinland Pfalz op Seniors 15th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2017.07.19"]
[Round "5"]
[White "Schwenke, Norbert"]
[Black "Lachat, Martin"]
[Result "0-1"]
[ECO "A02"]
[WhiteElo "1542"]
[BlackElo "1631"]
[PlyCount "74"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. f4 f5 2. Nc3 Nf6 3. Nf3 g6 4. b3 Bg7 5. Bb2 0-0 6. e3 d6 7. Bd3 c6 8. h3 Qc7 9. 0-0 e5 10. fxe5 dxe5 11. Bc4+ Kh8 12. a4 Nbd7 13. Ng5 Nb6 14. Ba3 c5 15. Nf7+ Rxf7 16. Bxf7 Qxf7 17. Bxc5 Nbd5 18. Nb5 b6 19. Ba3 Ne4 20. c4 Nc7 21. Rc1 Nxb5 22. cxb5 Be6 23. Rb1 Rd8 24. Bb4 Bd5 25. Kh2 Ng5 26. Qc2 Be4 27. Qc4 Qxc4 28. bxc4 Bxb1 29. Rxb1 Ne4 30. Rb2 Nf2 31. Rb3 e4 32. Kg1 Nd3 33. Be7 Rc8 34. c5 Nxc5 35. Bxc5 Rxc5 36. Ra3 Rc2 37. d3 Rc3 0-1

[Event "Rheinland Pfalz op Seniors 15th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2017.07.18"]
[Round "4"]
[White "Lachat, Martin"]
[Black "Schoeler, Klaus"]
[Result "1/2-1/2"]
[ECO "D35"]
[WhiteElo "1631"]
[BlackElo "1625"]
[PlyCount "170"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 d5 4. cxd5 exd5 5. d4 Be7 6. e3 0-0 7. Be2 c6 8. 0-0 Nbd7 9. a3 Ne4 10. Qc2 Ndf6 11. b4 a6 12. Nd2 Nxc3 13. Qxc3 Bd6 14. Re1 Qc7 15. g3 Re8 16. Bf3 Bf5 17. Bg2 Qd7 18. f3 Bh3 19. e4 dxe4 20. fxe4 Bxg2 21. Kxg2 Bc7 22. e5 Qd5+ 23. Nf3 Nd7 24. Bf4 Bb6 25. Kf1 Nf8 26. Qd3 Ne6 27. Rad1 Rad8 28. Re4 h6 29. Be3 Rd7 30. Kf2 Red8 31. Qc2 Nf8 32. Rg4 Qe6 33. Re4 Ng6 34. Kg2 Ne7 35. Rc1 Nd5 36. Bf2 Ne7 37. Qc4 Nd5 38. Nd2 Qg6 39. Qc2 Qg5 40. Nb3 Re7 41. Nc5 Qg6 42. h3 Bxc5 43. bxc5 Qe6 44. g4 Rde8 45. Rce1 Rd7 46. Bh4 g5 47. Bg3 Qg6 48. Qd3 h5 49. Qf3 h4 50. Bh2 Red8 51. Qf5 Qg7 52. e6 fxe6 53. Rxe6 Ne7 54. Qe5 Qxe5 55. Bxe5 Nd5 56. Rg6+ Kf8 57. Rf1+ Rf7 58. Rxf7+ Kxf7 59. Rxg5 Ne7 60. Kf3 Ng6 61. Rf5+ Ke8 62. Bf6 Rd5 63. Ke4 Rd7 64. Bg5 Rf7 65. Rxf7 Kxf7 66. Kf5 a5 67. a4 Ne7+ 68. Ke5 Nd5 69. Bd2 Nb4 70. Kd6 Nd5 71. Ke5 Nb4 72. Kf5 Nc2 73. Ke4 Nb4 74. Be1 Kg6 75. Bxh4 Nd5 76. Bd8 Nc3+ 77. Ke5 Nxa4 78. Bxa5 Nb2 79. Ke6 Nc4 80. Bd8 Nd2 81. Kd7 Nf3 82. Kc7 Nxd4 83. Kxb7 Ne6 84. Kc8 Nxc5 85. Kc7 Ne6+ 1/2-1/2

[Event "Rheinland Pfalz op Seniors 15th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2017.07.17"]
[Round "3"]
[White "Dickel, Gisbert"]
[Black "Lachat, Martin"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "1937"]
[BlackElo "1631"]
[PlyCount "39"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 c6 5. Bf4 Bf5 6. Bc4 e6 7. Nge2 Nf6 8. 0-0 Be7 9. Qd2 0-0 10. Nd5 Qd8 11. Nc7 Nbd7 12. Nxa8 Qxa8 13. f3 Nb6 14. Bb3 Qd8 15. c3 Nfd5 16. Bg3 Bd6 17. Bf2 Qc7 18. g3 c5 19. Rfe1 cxd4 20. Nxd4 1-0

[Event "Rheinland Pfalz op Seniors 15th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2017.07.16"]
[Round "2"]
[White "Lachat, Martin"]
[Black "Scheffler, Juergen"]
[Result "1-0"]
[ECO "A34"]
[WhiteElo "1631"]
[BlackElo "1518"]
[PlyCount "67"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 e6 3. Nf3 Nc6 4. e3 Nf6 5. g3 Qc7 6. Bg2 Be7 7. 0-0 0-0 8. d4 cxd4 9. exd4 d6 10. Re1 Rd8 11. a3 a6 12. b4 Rb8 13. Bb2 Bf8 14. Qc2 Ne7 15. c5 dxc5 16. dxc5 Ned5 17. Ne4 Nxe4 18. Qxe4 g6 19. Be5 f5 20. Qh4 Be7 21. Bxc7 Bxh4 22. Bxb8 Bf6 23. Be5 Be7 24. Rad1 Bd7 25. Re2 Bb5 26. Red2 Kf7 27. h4 Ba4 28. Re1 h6 29. Bb2 g5 30. hxg5 hxg5 31. Ne5+ Ke8 32. Ng6 Kf7 33. Nxe7 Kxe7 34. Bxd5 1-0

[Event "Rheinland Pfalz op Seniors 15th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2017.07.15"]
[Round "1"]
[White "Fecht, Hans Peter"]
[Black "Lachat, Martin"]
[Result "1-0"]
[ECO "A10"]
[WhiteElo "2119"]
[BlackElo "1631"]
[PlyCount "53"]
[EventDate "2017.07.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. c4 f5 2. Nc3 g6 3. b4 Bg7 4. Bb2 Nf6 5. d3 0-0 6. Nf3 d6 7. g3 e5 8. Bg2 c6 9. 0-0 Qc7 10. Qb3 Kh8 11. a4 Be6 12. Rfc1 Qe7 13. Qc2 Nbd7 14. Ba3 Rac8 15. b5 c5 16. Ng5 b6 17. Nxe6 Qxe6 18. Bb2 Rce8 19. Nd5 Rc8 20. a5 bxa5 21. Rxa5 Nb6 22. Nxf6 Bxf6 23. Rxa7 d5 24. cxd5 Nxd5 25. Qc4 Rfd8 26. Ra6 Nc7 27. Rxe6 1-0

[Event "Zuerich op-B 40th"]
[Site "Zuerich"]
[Date "2016.12.26"]
[Round "1"]
[White "Lachat, Martin"]
[Black "Buettiker, Stephan"]
[Result "0-1"]
[ECO "A27"]
[WhiteElo "1591"]
[BlackElo "1851"]
[PlyCount "46"]
[EventDate "2016.12.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "SUI"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 f5 4. e4 d6 5. exf5 Bxf5 6. d4 Nb4 7. Qa4+ Nc6 8. d5 Nge7 9. dxc6 Nxc6 10. Bg5 Be7 11. Bxe7 Qxe7 12. Nd5 Qf7 13. Be2 0-0 14. Qd1 Kh8 15. Bd3 e4 16. Ng5 Qg6 17. Nxc7 exd3 18. Nxa8 Re8+ 19. Kf1 Qxg5 20. Nc7 Re2 21. Nd5 Qh4 22. g3 Qh3+ 23. Kg1 Nd4 0-1

[Event "Schleswig Holstein-ch Seniors op 10th"]
[Site "Buesum"]
[Date "2016.10.04"]
[Round "9"]
[White "Lachat, Martin"]
[Black "Kuehnen, Gerhard"]
[Result "1-0"]
[ECO "A34"]
[WhiteElo "1601"]
[BlackElo "1657"]
[PlyCount "54"]
[EventDate "2016.09.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 Nf6 3. Nf3 d6 4. e3 Nbd7 5. Be2 a6 6. 0-0 e6 7. b3 Be7 8. Qc2 Qc7 9. Bb2 b6 10. Rac1 Bb7 11. Rfd1 d5 12. cxd5 exd5 13. d4 Rc8 14. Na4 Bd6 15. dxc5 bxc5 16. Qb1 0-0 17. Rd2 Nb6 18. Nxb6 Qxb6 19. Bxf6 gxf6 20. Qf5 Rfe8 21. Bd3 Re4 22. Bxe4 dxe4 23. Nh4 Rd8 24. Rcd1 Qc7 25. g3 Qe7 26. Qg4+ Kh8 27. Nf5 Rg8 1-0

[Event "Schleswig Holstein-ch Seniors op 10th"]
[Site "Buesum"]
[Date "2016.10.03"]
[Round "8"]
[White "Freerksen, Uwe"]
[Black "Lachat, Martin"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1508"]
[BlackElo "1601"]
[PlyCount "38"]
[EventDate "2016.09.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. Be2 Nxd5 4. d3 e5 5. Nf3 Nc6 6. h3 Be7 7. 0-0 0-0 8. Bd2 Be6 9. Nc3 Nxc3 10. Bxc3 Bf6 11. Rb1 Qe7 12. b3 Rad8 13. Qc1 Rfe8 14. Bb2 Nd4 15. Ba3 Nxe2+ 16. Kh1 Qd7 17. Qe1 Nf4 18. Nxe5 Qd5 19. Nf3 Nxh3 0-1

[Event "Schleswig Holstein-ch Seniors op 10th"]
[Site "Buesum"]
[Date "2016.10.02"]
[Round "7"]
[White "Lachat, Martin"]
[Black "Harders, Werner"]
[Result "0-1"]
[ECO "D10"]
[WhiteElo "1601"]
[BlackElo "1563"]
[PlyCount "106"]
[EventDate "2016.09.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 e6 2. Nc3 c6 3. d4 d5 4. cxd5 cxd5 5. Nf3 Nc6 6. Bf4 f5 7. a3 Nf6 8. Nb5 Qa5+ 9. Nc3 a6 10. b4 Qd8 11. e3 h6 12. Be2 Bd6 13. Ne5 0-0 14. 0-0 Bxe5 15. dxe5 Nd7 16. b5 Ncxe5 17. bxa6 bxa6 18. Nxd5 Ng6 19. Bd6 Rf7 20. Nc7 Ra7 21. Nxe6 Qf6 22. Bc4 Nb6 23. Bc5 Bxe6 24. Bxe6 Qxe6 25. Qd8+ Kh7 26. Qxb6 Qe8 27. Rfd1 Rfb7 28. Rd8 Qe5 29. Bd4 Qe4 30. f3 Qe7 31. Qa5 Rb5 32. Qc3 Rc7 33. Bf6 gxf6 34. Qd3 Rbc5 35. Rd1 Kg7 36. Qb3 Nf8 37. Qd3 Rc3 38. Qxf5 Qxe3+ 39. Kf1 R3c6 40. Qg4+ Ng6 41. R8d7+ Rxd7 42. Rxd7+ Kf8 43. Qb4+ Ne7 44. Rd1 Kf7 45. Qh4 Ng6 46. Qg4 Ne7 47. Qh5+ Ke6 48. Qh3+ Nf5 49. g4 Nd4 50. g5+ Nf5 51. g6 Rc2 52. Re1 Rf2+ 53. Kg1 Qxe1+ 0-1

[Event "Schleswig Holstein-ch Seniors op 10th"]
[Site "Buesum"]
[Date "2016.10.01"]
[Round "6"]
[White "Graffenberger, Wilhelm"]
[Black "Lachat, Martin"]
[Result "1-0"]
[ECO "A80"]
[WhiteElo "1717"]
[BlackElo "1601"]
[PlyCount "61"]
[EventDate "2016.09.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 f5 2. Nf3 g6 3. Bf4 Nf6 4. e3 Bg7 5. Bd3 0-0 6. 0-0 d6 7. c4 c6 8. Nc3 Qc7 9. c5 Kh8 10. Qb3 h6 11. h3 Nbd7 12. Rfe1 e5 13. cxd6 Qxd6 14. Bxe5 Qe7 15. Nh4 Kh7 16. Bh2 Nb6 17. Nf3 Be6 18. Qc2 Rad8 19. Ne5 Nfd7 20. Nf3 Nd5 21. a3 N7f6 22. Rac1 Rc8 23. Qb1 Qd7 24. Ne5 Qe7 25. e4 Nxc3 26. Rxc3 fxe4 27. Bxe4 Nxe4 28. Qxe4 Bxe5 29. Qxe5 Rce8 30. d5 cxd5 31. Rc7 1-0

[Event "Schleswig Holstein-ch Seniors op 10th"]
[Site "Buesum"]
[Date "2016.09.30"]
[Round "5"]
[White "Lachat, Martin"]
[Black "Jung, Michael"]
[Result "0-1"]
[ECO "A42"]
[WhiteElo "1601"]
[BlackElo "1819"]
[PlyCount "76"]
[EventDate "2016.09.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 g6 2. Nc3 Bg7 3. d4 e6 4. e4 d6 5. Nf3 Ne7 6. Bg5 h6 7. Be3 0-0 8. Be2 Nd7 9. 0-0 b6 10. Qc2 f5 11. Qd2 Kh7 12. Bd3 Bb7 13. exf5 exf5 14. d5 Ne5 15. Be2 Ng8 16. Nd4 Bc8 17. f4 Ng4 18. Nc6 Qh4 19. Bxg4 fxg4 20. Bf2 Qf6 21. Bd4 Qf7 22. Bxg7 Qxg7 23. Rae1 Bf5 24. Re2 a6 25. Rfe1 Qf7 26. Ne7 Rae8 27. Nxg8 Kxg8 28. Re3 Rxe3 29. Qxe3 Qf6 30. Qd2 h5 31. Ne4 Qd8 32. Ng5 Re8 33. Re3 Rxe3 34. Qxe3 Qf8 35. Ne6 Qe7 36. Kf2 Bxe6 37. f5 Qh4+ 38. Kg1 Bxf5 0-1

[Event "Schleswig Holstein-ch Seniors op 10th"]
[Site "Buesum"]
[Date "2016.09.29"]
[Round "4"]
[White "Schmieder, Wolfgang Ernst"]
[Black "Lachat, Martin"]
[Result "1/2-1/2"]
[ECO "A88"]
[WhiteElo "1804"]
[BlackElo "1601"]
[PlyCount "47"]
[EventDate "2016.09.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 f5 2. Nc3 Nf6 3. Nf3 g6 4. d4 Bg7 5. g3 0-0 6. Bg2 d6 7. 0-0 c6 8. b3 Qc7 9. Bb2 e5 10. dxe5 dxe5 11. Qc2 Be6 12. Ng5 Bf7 13. Rad1 Nbd7 14. Nxf7 Rxf7 15. Ba3 Bf8 16. Bxf8 Nxf8 17. Rd2 Rd8 18. Rfd1 Rfd7 19. e3 Rxd2 20. Rxd2 Rxd2 21. Qxd2 Qd7 22. Qxd7 N8xd7 23. Na4 e4 24. Kf1 1/2-1/2

[Event "Schleswig Holstein-ch Seniors op 10th"]
[Site "Buesum"]
[Date "2016.09.28"]
[Round "3"]
[White "Lachat, Martin"]
[Black "Huelle, Gunter"]
[Result "1-0"]
[ECO "D94"]
[WhiteElo "1601"]
[BlackElo "1742"]
[PlyCount "63"]
[EventDate "2016.09.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. d4 Bg7 4. Nf3 0-0 5. e3 c6 6. Be2 d5 7. b3 Ne4 8. Bb2 Qa5 9. Qc2 Bf5 10. Bd3 Nd6 11. Bxf5 Nxf5 12. 0-0 Nd7 13. Rfe1 e6 14. Rad1 Rfd8 15. a3 dxc4 16. bxc4 c5 17. d5 exd5 18. cxd5 Nd6 19. Nd2 Ne5 20. Nb3 Qc7 21. Ne4 Nxe4 22. Qxe4 f5 23. Qc2 b6 24. Nd4 Rxd5 25. Ne6 Qd6 26. Rxd5 Qxd5 27. Nxg7 Kxg7 28. Rd1 Qe6 29. f4 Kf7 30. Bxe5 Qc6 31. Qc4+ Ke7 32. Rd6 1-0

[Event "Schleswig Holstein-ch Seniors op 10th"]
[Site "Buesum"]
[Date "2016.09.27"]
[Round "2"]
[White "Becker, Guenter"]
[Black "Lachat, Martin"]
[Result "1-0"]
[ECO "A88"]
[WhiteElo "1821"]
[BlackElo "1601"]
[PlyCount "57"]
[EventDate "2016.09.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 f5 2. g3 g6 3. Bg2 Nf6 4. d4 Bg7 5. Nc3 0-0 6. Nf3 d6 7. 0-0 c6 8. Rb1 Qc7 9. Bf4 Nh5 10. Be3 e5 11. d5 f4 12. Bc1 Bf5 13. Ra1 Nd7 14. Nh4 Nb6 15. Nxf5 gxf5 16. e4 Qf7 17. Bh3 Nf6 18. Bxf5 Qh5 19. b3 f3 20. dxc6 Ng4 21. h4 Rxf5 22. exf5 e4 23. cxb7 Rb8 24. Bb2 Qxf5 25. Qxd6 Be5 26. Qd2 Bf6 27. Nd5 Ne5 28. Nxf6+ Kf7 29. Kh2 1-0

[Event "Schleswig Holstein-ch Seniors op 10th"]
[Site "Buesum"]
[Date "2016.09.26"]
[Round "1"]
[White "Lachat, Martin"]
[Black "Perk, Egbert"]
[Result "0-1"]
[ECO "D35"]
[WhiteElo "1601"]
[BlackElo "1934"]
[PlyCount "72"]
[EventDate "2016.09.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 d5 4. cxd5 exd5 5. d4 c6 6. e3 Bd6 7. g3 0-0 8. Bg2 Re8 9. 0-0 Ne4 10. Ne2 Nd7 11. a3 Nb6 12. b3 Qf6 13. Bb2 Nd7 14. Nc3 Nf8 15. Nxe4 dxe4 16. Nd2 Bf5 17. Qc2 Qg6 18. Nc4 Bc7 19. Ne5 Bxe5 20. dxe5 Ne6 21. Rad1 Ng5 22. Rd6 Re6 23. Rfd1 Rae8 24. Rxe6 Bxe6 25. Rd6 Qf5 26. Qd1 Bd5 27. b4 Nf3+ 28. Kh1 Nxe5 29. Bxe5 Qxe5 30. Rd7 Qb8 31. Bh3 g6 32. Qd4 Rd8 33. Qf6 Rxd7 34. Bxd7 Qc7 35. Qe7 Kg7 36. h4 Be6 0-1

[Event "Rheinland Pfalz op Seniors 14th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2016.07.24"]
[Round "9"]
[White "Thonig, Manfred"]
[Black "Lachat, Martin"]
[Result "0-1"]
[ECO "A85"]
[WhiteElo "1592"]
[BlackElo "1543"]
[PlyCount "66"]
[EventDate "2016.07.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 f5 2. Bf4 Nf6 3. Nf3 g6 4. c4 Bg7 5. Nc3 0-0 6. e3 d6 7. h3 c6 8. Bd3 Qe8 9. 0-0 Nh5 10. Bh2 e5 11. dxe5 dxe5 12. e4 f4 13. Qb3 Qe7 14. Na4 Be6 15. Qc3 Nd7 16. b4 Rac8 17. c5 b5 18. cxb6 axb6 19. Nb2 Rfd8 20. Nd2 b5 21. a4 c5 22. bxc5 Nxc5 23. Qa3 bxa4 24. Rfc1 Qd6 25. Ndc4 Qd4 26. Nb6 Nxd3 27. Rxc8 Bxc8 28. Qa2+ Kh8 29. N2c4 Be6 30. Qa3 Nxf2 31. Qe7 Nxe4+ 32. Kh1 Nf2+ 33. Kg1 Nxh3+ 0-1

[Event "Rheinland Pfalz op Seniors 14th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2016.07.23"]
[Round "8"]
[White "Lachat, Martin"]
[Black "Kock, Wolfgang"]
[Result "0-1"]
[ECO "E14"]
[WhiteElo "1543"]
[BlackElo "1764"]
[PlyCount "96"]
[EventDate "2016.07.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 b6 4. d4 Bb7 5. e3 Ne4 6. Nxe4 Bxe4 7. Bd3 Bb4+ 8. Bd2 Bxd2+ 9. Kxd2 Bxd3 10. Kxd3 0-0 11. Qd2 d6 12. d5 Qf6 13. e4 c6 14. Rad1 exd5 15. cxd5 cxd5 16. exd5 Nd7 17. Kc2 Qf5+ 18. Qd3 Rac8+ 19. Kb1 Qxd3+ 20. Rxd3 Nf6 21. Rd4 Rfe8 22. Re1 Rxe1+ 23. Nxe1 Rc5 24. Nd3 Rxd5 25. Rxd5 Nxd5 26. Kc2 Kf8 27. Kb3 g5 28. Kc4 Nc7 29. Nb4 a6 30. Nd5 b5+ 31. Kd4 Nxd5 32. Kxd5 Ke7 33. b4 Kd7 34. g4 h6 35. Ke4 Ke6 36. f4 gxf4 37. Kxf4 f6 38. Ke4 d5+ 39. Kd4 Kd6 40. Ke3 Ke5 41. Kd3 f5 42. gxf5 Kxf5 43. Kd4 Kg4 44. Kxd5 h5 45. Ke4 Kh3 46. Kf3 h4 47. Kf2 Kxh2 48. a3 h3 0-1

[Event "Rheinland Pfalz op Seniors 14th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2016.07.22"]
[Round "7"]
[White "Vohmann, Wolfgang"]
[Black "Lachat, Martin"]
[Result "1-0"]
[ECO "A87"]
[WhiteElo "1892"]
[BlackElo "1543"]
[PlyCount "65"]
[EventDate "2016.07.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. b3 f5 2. Bb2 Nf6 3. Nf3 g6 4. g3 Bg7 5. Bg2 0-0 6. d4 d6 7. c4 c6 8. Nc3 Qc7 9. Rc1 e5 10. d5 Qe7 11. dxc6 bxc6 12. 0-0 Bb7 13. Ba3 Rd8 14. e3 Na6 15. Qd2 Rd7 16. Rfd1 Rad8 17. Ne1 Qe8 18. Na4 d5 19. cxd5 Nxd5 20. Qe2 e4 21. Nc2 Kh8 22. Nd4 Nb6 23. Nc5 Nxc5 24. Bxc5 Bf8 25. Qb2 Kg8 26. Bf1 Bxc5 27. Rxc5 a6 28. Rdc1 Rd5 29. R5c2 Qe7 30. Nxc6 Bxc6 31. Rxc6 Rd2 32. Qc3 Qb7 33. Rc7 1-0

[Event "Rheinland Pfalz op Seniors 14th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2016.07.21"]
[Round "6"]
[White "Lachat, Martin"]
[Black "Schumacher, Ursula"]
[Result "1-0"]
[ECO "D10"]
[WhiteElo "1543"]
[BlackElo "1570"]
[PlyCount "65"]
[EventDate "2016.07.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 c6 2. Nc3 d5 3. cxd5 cxd5 4. d4 e6 5. Nf3 Be7 6. Bf4 Nc6 7. e3 a6 8. Be2 Nf6 9. h3 0-0 10. 0-0 h6 11. a3 b5 12. b4 Bb7 13. Nd2 Rc8 14. Nb3 Nxb4 15. Nc5 Bxc5 16. dxc5 Rxc5 17. Qd4 Qc8 18. Rfc1 Ne4 19. axb4 Rxc3 20. Qd1 Rxc1 21. Rxc1 Nc3 22. e4 Nxe2+ 23. Qxe2 Qa8 24. Qg4 Kh7 25. exd5 Bxd5 26. Be5 Rg8 27. Rc7 Qf8 28. Qf4 f5 29. Ra7 Qd8 30. h4 Qb6 31. Bd4 Qc6 32. Qg3 Qc4 33. Rxg7+ 1-0

[Event "Rheinland Pfalz op Seniors 14th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2016.07.20"]
[Round "5"]
[White "Ziegler, Ulrich"]
[Black "Lachat, Martin"]
[Result "0-1"]
[ECO "A21"]
[WhiteElo "1795"]
[BlackElo "1543"]
[PlyCount "88"]
[EventDate "2016.07.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 f5 3. g3 Nf6 4. Bg2 g6 5. Nf3 d6 6. d4 e4 7. Nd2 Bg7 8. Nb3 0-0 9. 0-0 Be6 10. d5 Bf7 11. Bf4 Nbd7 12. Rc1 Re8 13. h3 Nh5 14. Be3 Nhf6 15. Nd4 a6 16. b4 Nb6 17. Na4 Nfd7 18. Nb2 a5 19. b5 Nc5 20. Qc2 Be5 21. Rfd1 a4 22. a3 Qf6 23. Rb1 g5 24. f4 gxf4 25. gxf4 Bxd4 26. Bxd4 Qh4 27. Rf1 Nbd7 28. Qc3 Bh5 29. Rbe1 Kf7 30. Bf2 Qf6 31. Bd4 Qg6 32. Rf2 Rg8 33. Kh1 Qg3 34. Qxg3 Rxg3 35. e3 Rag8 36. Nd1 Nd3 37. Rg1 Bxd1 38. Rd2 Bf3 39. Kh2 Nf8 40. b6 cxb6 41. Bxb6 h5 42. Bd8 Ne1 43. Rxe1 Rxg2+ 44. Rxg2 Rxg2+ 0-1

[Event "Rheinland Pfalz op Seniors 14th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2016.07.19"]
[Round "4"]
[White "Lachat, Martin"]
[Black "Samarian, Cornel"]
[Result "1/2-1/2"]
[ECO "A35"]
[WhiteElo "1543"]
[BlackElo "1677"]
[PlyCount "39"]
[EventDate "2016.07.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 Nc6 3. Nf3 g6 4. d4 cxd4 5. Nxd4 Bg7 6. e3 a6 7. Be2 Nf6 8. 0-0 0-0 9. Nxc6 dxc6 10. Qxd8 Rxd8 11. Bf3 e5 12. e4 h6 13. Be3 Be6 14. b3 Nd7 15. Rad1 Bf8 16. Be2 Bg7 17. Rd6 Bf8 18. Rdd1 Bg7 19. Rd6 Bf8 20. Rdd1 1/2-1/2

[Event "Rheinland Pfalz op Seniors 14th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2016.07.18"]
[Round "3"]
[White "Mang, Willi"]
[Black "Lachat, Martin"]
[Result "1/2-1/2"]
[ECO "A82"]
[BlackElo "1543"]
[PlyCount "59"]
[EventDate "2016.07.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 f5 2. Nc3 g6 3. e4 fxe4 4. Nxe4 Bg7 5. Nf3 Nf6 6. Bd3 Nxe4 7. Bxe4 0-0 8. Be3 d5 9. Bd3 Bg4 10. Be2 Nd7 11. h3 Bxf3 12. Bxf3 c6 13. Qd2 e5 14. dxe5 Nxe5 15. Be2 Qf6 16. 0-0 Nd7 17. Rab1 Qe7 18. Bf3 Ne5 19. Be2 a6 20. b4 Nd7 21. Bg4 Rae8 22. Bxd7 Qxd7 23. Bc5 Rf5 24. Rfe1 Rfe5 25. Rxe5 Rxe5 26. Bd4 Re4 27. Bxg7 Qxg7 28. Re1 Qe5 29. Rxe4 Qxe4 30. Qc3 1/2-1/2

[Event "Rheinland Pfalz op Seniors 14th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2016.07.17"]
[Round "2"]
[White "Lachat, Martin"]
[Black "Scheffler, Juergen"]
[Result "0-1"]
[ECO "A28"]
[WhiteElo "1543"]
[BlackElo "1502"]
[PlyCount "60"]
[EventDate "2016.07.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. d4 exd4 5. Nxd4 Bb4 6. Qd3 Ne5 7. Qe3 Qe7 8. Nf5 Nxc4 9. Qxe7+ Bxe7 10. Nxg7+ Kd8 11. e4 Ne5 12. Nf5 Bb4 13. Bg5 Be7 14. Nxe7 Kxe7 15. Bxf6+ Kxf6 16. Nd5+ Kg7 17. Nxc7 Rb8 18. Rd1 a6 19. Rd4 b5 20. Rd6 Nc6 21. Be2 Rd8 22. 0-0 Bb7 23. Rfd1 Rbc8 24. Rxd7 Rxd7 25. Rxd7 Ne5 26. Ne6+ Kf6 27. f4 Nxd7 28. Nd4 Bxe4 29. Bg4 Rc1+ 30. Kf2 Nc5 0-1

[Event "Rheinland Pfalz op Seniors 14th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2016.07.16"]
[Round "1"]
[White "Diehl, Klaus"]
[Black "Lachat, Martin"]
[Result "1-0"]
[ECO "A21"]
[WhiteElo "2038"]
[BlackElo "1543"]
[PlyCount "67"]
[EventDate "2016.07.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 f5 2. g3 Nf6 3. Bg2 g6 4. d3 Bg7 5. c4 0-0 6. 0-0 d6 7. Nc3 e5 8. c5 c6 9. cxd6 Qxd6 10. Nd2 Be6 11. Nc4 Qc7 12. a4 Nbd7 13. Qc2 Rfe8 14. Bd2 Rad8 15. Rac1 Bf7 16. b3 a6 17. Rfd1 b5 18. Ne3 f4 19. Ncd5 Qd6 20. Nxf6+ Bxf6 21. Ng4 c5 22. Nh6+ Kg7 23. Nxf7 Kxf7 24. b4 Rc8 25. axb5 axb5 26. Qb3+ Kg7 27. bxc5 Rxc5 28. Bb4 fxg3 29. hxg3 Bg5 30. Rb1 Rf8 31. Bxc5 Qxc5 32. d4 exd4 33. Qxb5 Qxb5 34. Rxb5 1-0

[Event "Schleswig Holstein-ch Seniors op 9th"]
[Site "Buesum"]
[Date "2015.10.07"]
[Round "9"]
[White "Lachat, Martin"]
[Black "Graffenberger, Marianne"]
[Result "0-1"]
[ECO "A42"]
[WhiteElo "1538"]
[BlackElo "1540"]
[PlyCount "73"]
[EventDate "2015.09.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 g6 3. Nf3 Bg7 4. e4 d6 5. d4 Bg4 6. dxe5 Bxe5 7. Qa4+ Bd7 8. Qb3 Bc6 9. Nxe5 dxe5 10. Be3 Nd7 11. Rd1 Ngf6 12. f3 Qe7 13. Nd5 Bxd5 14. cxd5 Qd6 15. Bh6 Nc5 16. Qc2 Nfd7 17. Bb5 Rg8 18. b4 Na6 19. Bxd7+ Kxd7 20. a3 g5 21. h4 Qxh6 22. b5 Nb8 23. Rc1 Qb6 24. a4 a6 25. hxg5 Rg7 26. Qc3 Qd6 27. f4 a5 28. Ke2 c6 29. fxe5 Qg6 30. Qh3+ Ke7 31. d6+ Kd8 32. Kf3 Nd7 33. Qg3 Qe6 34. Rh6 Nxe5+ 35. Kf4 Ng6+ 36. Ke3 Qb3+ 37. Kf2 0-1

[Event "Schleswig Holstein-ch Seniors op 9th"]
[Site "Buesum"]
[Date "2015.10.06"]
[Round "8"]
[White "Kuehnen, Gerhard"]
[Black "Lachat, Martin"]
[Result "1-0"]
[ECO "A80"]
[WhiteElo "1649"]
[BlackElo "1538"]
[PlyCount "45"]
[EventDate "2015.09.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 f5 2. Nf3 Nf6 3. Nc3 d6 4. Bg5 c6 5. Bxf6 exf6 6. e3 d5 7. a3 Bd6 8. Bd3 Be6 9. Nh4 g6 10. b4 a6 11. Na4 b6 12. Qe2 0-0 13. c4 Qc7 14. f4 c5 15. cxd5 Bxd5 16. Bc4 Bf7 17. Rc1 b5 18. Bxf7+ Rxf7 19. Nxc5 Bxf4 20. Nd3 Qd7 21. Nxf4 g5 22. Qf3 Qe7 23. Nxf5 1-0

[Event "Schleswig Holstein-ch Seniors op 9th"]
[Site "Buesum"]
[Date "2015.10.05"]
[Round "7"]
[White "Riha, Peter"]
[Black "Lachat, Martin"]
[Result "1-0"]
[ECO "A80"]
[WhiteElo "1787"]
[BlackElo "1538"]
[PlyCount "19"]
[EventDate "2015.09.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 f5 2. Bf4 g6 3. h4 h5 4. Nc3 Bh6 5. Nh3 e6 6. Ng5 d6 7. Qd2 Nf6 8. Nxe6 Bxe6 9. Bxh6 Nc6 10. Bg7 1-0

[Event "Schleswig Holstein-ch Seniors op 9th"]
[Site "Buesum"]
[Date "2015.10.04"]
[Round "6"]
[White "Lachat, Martin"]
[Black "Schumacher, Ursula"]
[Result "1-0"]
[ECO "A53"]
[WhiteElo "1538"]
[BlackElo "1670"]
[PlyCount "103"]
[EventDate "2015.09.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. c4 c6 2. Nc3 Nf6 3. Nf3 d6 4. d4 e6 5. e4 Be7 6. Be2 0-0 7. 0-0 a6 8. b3 b6 9. Bb2 d5 10. Qc2 Bb7 11. Bd3 g6 12. Qd2 Kg7 13. Rac1 Ng8 14. Na4 Nd7 15. Bc3 f6 16. b4 Rc8 17. c5 b5 18. Nb2 Qc7 19. a4 h6 20. a5 f5 21. exd5 exd5 22. Rce1 Rce8 23. Ne5 Ndf6 24. Nd1 Ne4 25. Qc2 Nxc3 26. Qxc3 Nf6 27. f3 Bc8 28. Qc1 Nh7 29. Re2 Bg5 30. f4 Be7 31. h3 Nf6 32. Nf2 Nh5 33. Qe3 Bd7 34. g4 Nf6 35. Nxd7 Qxd7 36. gxf5 Ne4 37. fxg6 Bh4 38. Nxe4 dxe4 39. Bc2 Qd5 40. Bxe4 Qd7 41. Qc3 Bf6 42. Rd1 Qc7 43. Qf3 Rd8 44. Red2 Bxd4+ 45. Rxd4 Rxd4 46. Rxd4 Rxf4 47. Qd3 Qe5 48. Rd7+ Kf6 49. Rf7+ Kg5 50. Qg3+ Kh5 51. Rf5+ Rxf5 52. Qg4# 1-0

[Event "Schleswig Holstein-ch Seniors op 9th"]
[Site "Buesum"]
[Date "2015.10.02"]
[Round "5"]
[White "Lachat, Martin"]
[Black "Manthey, Wolfgang"]
[Result "0-1"]
[ECO "E94"]
[WhiteElo "1538"]
[BlackElo "1780"]
[PlyCount "94"]
[EventDate "2015.09.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. c4 g6 2. Nc3 Bg7 3. d4 Nf6 4. Nf3 d6 5. e4 0-0 6. Be2 Nbd7 7. 0-0 e5 8. dxe5 dxe5 9. Qc2 Qe7 10. Nd5 Nxd5 11. cxd5 Nf6 12. Bg5 Bg4 13. h3 Bxf3 14. Bxf3 Qd6 15. Rac1 Ne8 16. Qc5 f6 17. Qxd6 cxd6 18. Bd2 Rf7 19. Rc4 Rc7 20. Rxc7 Nxc7 21. Rc1 Nb5 22. a4 Nd4 23. Bd1 f5 24. f3 fxe4 25. fxe4 Rf8 26. Rc7 Rf7 27. Rc4 a6 28. Bb4 Bf8 29. Rc8 Kg7 30. Rd8 Rc7 31. Kh2 Be7 32. Re8 b6 33. Bg4 a5 34. Bc3 h5 35. Bxd4 exd4 36. Be2 Bf6 37. Bd3 Be5+ 38. Kg1 Bg3 39. Kf1 Rf7+ 40. Kg1 Rf2 41. b3 Rb2 42. Bc4 Rb1+ 43. Bf1 Rxb3 44. Rc8 d3 45. Rc4 d2 46. Rd4 Bf4 47. Kf2 Be3+ 0-1

[Event "Schleswig Holstein-ch Seniors op 9th"]
[Site "Buesum"]
[Date "2015.10.01"]
[Round "4"]
[White "Fleischer, Martin"]
[Black "Lachat, Martin"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "1872"]
[BlackElo "1538"]
[PlyCount "9"]
[EventDate "2015.09.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. c3 Nf6 4. h3 Nxe4 5. Qa4+ 1-0

