[Event "Werther Schloss op 27th"]
[Site "Werther"]
[Date "2024.03.23"]
[Round "4"]
[White "Koellner, Christof"]
[Black "Stricker, Florian"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2009"]
[BlackElo "2214"]
[PlyCount "102"]
[EventDate "2024.03.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CB13_2024"]
[SourceDate "2024.03.27"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.27"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 h6 3. c3 Nf6 4. h3 e6 5. Bf4 c5 6. e3 Nc6 7. Nbd2 Bd6 8. Bxd6 Qxd6 9. dxc5 Qxc5 10. Bd3 Bd7 11. 0-0 0-0 12. e4 dxe4 13. Nxe4 Nxe4 14. Bxe4 Rad8 15. Qe2 Ne7 16. Rfd1 Bc6 17. Ne5 Bxe4 18. Qxe4 Nd5 19. c4 Nf6 20. Qe3 Qa5 21. a3 Qc7 22. b4 a6 23. c5 Nd5 24. Qe1 a5 25. Nc4 axb4 26. axb4 Ra8 27. Ne3 Nf6 28. Qc3 Qf4 29. Rxa8 Rxa8 30. Qd4 Qxd4 31. Rxd4 Kf8 32. Kf1 Ke7 33. Ke2 b6 34. cxb6 Rb8 35. Kd3 Rxb6 36. Rc4 Nd7 37. Kc3 Rb8 38. Rc7 g6 39. Nc4 Kd8 40. Ra7 Nf6 41. Rxf7 Nd5+ 42. Kd4 Rxb4 43. Kc5 Ra4 44. Ne5 Ne7 45. Nc6+ Nxc6 46. Kxc6 Rd4 47. Rg7 g5 48. Rg6 Ke7 49. Rxh6 Kf7 50. Rh7+ Kf6 51. Rh6+ Kf7 1/2-1/2

[Event "Werther Schloss op 27th"]
[Site "Werther"]
[Date "2024.03.22"]
[Round "3"]
[White "Adiyaman, Rene"]
[Black "Koellner, Christof"]
[Result "1/2-1/2"]
[ECO "B07"]
[WhiteElo "2120"]
[BlackElo "2009"]
[PlyCount "132"]
[EventDate "2024.03.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CB13_2024"]
[SourceDate "2024.03.27"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.27"]
[SourceQuality "1"]

1. e4 d6 2. f4 d5 3. d3 dxe4 4. dxe4 Qxd1+ 5. Kxd1 Bg4+ 6. Ke1 Bd7 7. Nc3 Nc6 8. Nge2 Nb4 9. Kd1 0-0-0 10. Bd2 Nf6 11. a3 Nc6 12. h3 e5 13. b4 exf4 14. Nxf4 Bd6 15. Nd3 h6 16. g4 Ne5 17. Bg2 c6 18. Re1 Be6 19. Kc1 Bc4 20. Nb2 Bc7 21. Be3 Be6 22. Nca4 b6 23. Kb1 Ne8 24. Nc3 Nd6 25. Bf1 Ndc4 26. Nxc4 Bxc4 27. Bxc4 Nxc4 28. Ka2 Be5 29. Kb3 Nd2+ 30. Bxd2 Rxd2 31. Re3 Rhd8 32. Rf1 f6 33. Ne2 Rd1 34. Rxd1 Rxd1 35. c4 Re1 36. Kc2 Kd7 37. Kd2 Ra1 38. Rd3+ Ke7 39. Ke3 Re1 40. Kd2 Rh1 41. Rf3 g5 42. Ng3 Bxg3 43. Rxg3 Ke6 44. Rf3 Ra1 45. Rd3 Ke5 46. Ke3 Re1+ 47. Kf3 Rxe4 48. Rd7 Rxc4 49. Rxa7 Rc3+ 50. Kg2 Kf4 51. Rf7 Rc2+ 52. Kf1 Kg3 53. Rxf6 Kxh3 54. Rxh6+ Kxg4 55. a4 Kf3 56. Rf6+ Kg3 57. b5 cxb5 58. axb5 g4 59. Rxb6 Rc1+ 60. Ke2 Kg2 61. Rb8 g3 62. b6 Rb1 63. b7 Rb2+ 64. Ke1 Rb1+ 65. Ke2 Rb2+ 66. Ke1 Rb1+ 1/2-1/2

[Event "Werther Schloss op 27th"]
[Site "Werther"]
[Date "2024.03.21"]
[Round "1"]
[White "Brunke, Pascal"]
[Black "Koellner, Christof"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "2267"]
[BlackElo "2009"]
[PlyCount "107"]
[EventDate "2024.03.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CB13_2024"]
[SourceDate "2024.03.27"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.27"]
[SourceQuality "1"]

1. e4 d6 2. Nc3 Nf6 3. d4 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. 0-0 Nb6 7. Bb3 exd4 8. Nxd4 c5 9. Nde2 c4 10. Ba4+ Nxa4 11. Nxa4 Nxe4 12. Qd5 Nc5 13. Nxc5 dxc5 14. Qxc4 Be6 15. Qc3 0-0 16. Nf4 Bf5 17. Be3 b6 18. Rad1 Qe8 19. Nd5 Bd8 20. Bf4 Qa4 21. b3 Qxa2 22. Ne3 Bf6 23. Be5 Bxe5 24. Qxe5 Bxc2 25. Rd2 Qxb3 26. Rxc2 Rfe8 27. Qf4 a5 28. Rcc1 Qe6 29. Rfd1 a4 30. h4 Qe4 31. Qxe4 Rxe4 32. Nd5 Rb8 33. Nxb6 Rxh4 34. Rxc5 h6 35. Rc4 Rxc4 36. Nxc4 Kf8 37. Ra1 Rb4 38. Ne3 Rd4 39. Kf1 g6 40. Ke2 f5 41. f3 Kf7 42. Nc2 Rc4 43. Kd3 Rh4 44. Nd4 Rh2 45. g3 h5 46. Rxa4 h4 47. gxh4 Rxh4 48. Ra7+ Kf6 49. Ke3 f4+ 50. Ke4 g5 51. Ra6+ Kf7 52. Kf5 Rh5 53. Ra7+ Ke8 54. Ne6 1-0

[Event "Roquetas de Mar op 35th"]
[Site "Roquetas de Mar"]
[Date "2024.01.02"]
[Round "1"]
[White "Merario Alarcon, Andres"]
[Black "Koellner, Christof"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "2429"]
[BlackElo "2023"]
[PlyCount "105"]
[EventDate "2024.01.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "CB02_2024"]
[SourceDate "2024.01.10"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 c6 6. e3 Be7 7. Bd3 Nbd7 8. h3 Nf8 9. Nf3 Nh5 10. Bxe7 Qxe7 11. Ne5 g6 12. 0-0 f6 13. Nf3 f5 14. Rb1 Nf6 15. b4 Ne6 16. b5 c5 17. dxc5 Nxc5 18. b6 Nxd3 19. Qxd3 Be6 20. Qb5+ Kf7 21. bxa7 Rxa7 22. Qb6 Ra6 23. Ng5+ Kg7 24. Qxb7 Qxb7 25. Rxb7+ Kh6 26. h4 Rc8 27. Nb5 Bg8 28. a3 Kh5 29. Nf3 Ne4 30. g3 Rc2 31. Nfd4 Rb2 32. Rb8 Nf6 33. Rc1 Be6 34. Nc7 Rxb8 35. Nxa6 Rb6 36. Nc5 Bc8 37. a4 Ng4 38. a5 Rf6 39. Nd3 Ba6 40. Nf4+ Kh6 41. Nxd5 Rd6 42. Nb4 Ne5 43. Rc5 Nd3 44. Rc6 Rxc6 45. Ndxc6 Nc5 46. Nxa6 Nxa6 47. Kf1 g5 48. hxg5+ Kxg5 49. Ke2 Kg4 50. Nd4 Nc5 51. Kd2 h5 52. Kc3 Ne4+ 53. Kb4 1-0

[Event "Sitges Sunway op 10th"]
[Site "Sitges"]
[Date "2023.12.14"]
[Round "3"]
[White "Samaganova, Alexandra"]
[Black "Koellner, Christof"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "1827"]
[BlackElo "2080"]
[PlyCount "85"]
[EventDate "2023.12.12"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "ESP"]
[SourceTitle "CB52_2023"]
[SourceDate "2023.12.27"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.27"]
[SourceQuality "1"]

1. c4 e6 2. Nc3 d5 3. e3 Nf6 4. Nf3 Be7 5. d4 0-0 6. cxd5 exd5 7. Bd3 c6 8. h3 Nbd7 9. 0-0 Bd6 10. Re1 Re8 11. Qc2 Nf8 12. e4 dxe4 13. Nxe4 Nxe4 14. Bxe4 h6 15. Bd2 Be6 16. Rad1 Bc7 17. Re2 Qd6 18. Rde1 Red8 19. a3 a5 20. Qc1 Bb3 21. Re3 a4 22. Bb4 Qf4 23. g3 Qf6 24. Be7 Qe6 25. Bh7+ Nxh7 26. Rxe6 Bxe6 27. Bxd8 Rxd8 28. h4 Nf6 29. Qc2 Bb3 30. Qc5 Bd5 31. Ne5 Bd6 32. Qa5 Re8 33. Nd3 Be4 34. Nc5 Bxc5 35. dxc5 Rf8 36. Qxa4 Bf5 37. Qf4 Bc8 38. b4 Nd5 39. Qd6 Bg4 40. b5 Rc8 41. f3 Bxf3 42. Qd7 Ra8 43. Re8+ 1-0

[Event "Sitges Sunway op 10th"]
[Site "Sitges"]
[Date "2023.12.12"]
[Round "1"]
[White "Tin, Jingyao"]
[Black "Koellner, Christof"]
[Result "1-0"]
[ECO "E14"]
[WhiteElo "2573"]
[BlackElo "2080"]
[PlyCount "83"]
[EventDate "2023.12.12"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "ESP"]
[SourceTitle "CB52_2023"]
[SourceDate "2023.12.27"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.27"]
[SourceQuality "1"]

1. Nf3 d5 2. b3 Nf6 3. Bb2 e6 4. e3 Nbd7 5. d4 Be7 6. Bd3 b6 7. 0-0 Bb7 8. c4 0-0 9. Nc3 h6 10. Rc1 Ne4 11. Qc2 Nxc3 12. Bxc3 dxc4 13. Bxc4 Bxf3 14. gxf3 Bd6 15. f4 Qe7 16. Kh1 Kh8 17. Rg1 Nf6 18. Rg2 Nd5 19. Rcg1 Rg8 20. Bd2 c6 21. Bd3 Rac8 22. Bh7 Qb7 23. Bxg8 Rxg8 24. f5 e5 25. e4 Nf6 26. Bc3 Qe7 27. f3 exd4 28. Bxd4 c5 29. Bc3 Be5 30. Rd1 Re8 31. Qb2 Bxc3 32. Qxc3 Qe5 33. Qxe5 Rxe5 34. Rd8+ Kh7 35. Rgd2 Re7 36. R2d6 h5 37. h4 Re5 38. Rf8 Re7 39. Rdd8 g6 40. e5 Nd7 41. Rh8+ Kg7 42. Rdg8# 1-0

[Event "Neckar op 20th"]
[Site "Deizisau"]
[Date "2023.04.08"]
[Round "4"]
[White "Koellner, Christof"]
[Black "Gheng, Josef"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "2087"]
[BlackElo "2215"]
[PlyCount "128"]
[EventDate "2023.04.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. d4 d6 2. Nf3 g6 3. e4 Bg7 4. Nbd2 c6 5. a4 Nf6 6. Bd3 0-0 7. 0-0 Nh5 8. Re1 e5 9. dxe5 dxe5 10. Nc4 Qc7 11. Bf1 Rd8 12. Qe2 Na6 13. g3 f6 14. Bd2 Bf8 15. Red1 Be6 16. Bc3 Ng7 17. h3 Nc5 18. b3 Bf7 19. Rd2 Rxd2 20. Ncxd2 Nce6 21. Rd1 c5 22. Nc4 Nd4 23. Qd3 Rd8 24. Nxd4 cxd4 25. Ba5 b6 26. Bd2 Ne6 27. Qf3 Be7 28. h4 Nc5 29. Bb4 h5 30. Bxc5 Qxc5 31. Bd3 Kg7 32. Kh2 Be6 33. Qg2 a6 34. Nd2 b5 35. axb5 axb5 36. Qf1 Bg4 37. f3 Bd7 38. Ra1 Qb6 39. Qg2 Bb4 40. Rf1 Qa5 41. Rf2 Qc7 42. Nf1 Be1 43. Re2 Bc3 44. Nd2 Ra8 45. Rf2 Ra1 46. Rf1 Ra2 47. Nb1 Bb4 48. Qe2 Be6 49. Nd2 Rxc2 50. Bxc2 Qxc2 51. Rf2 d3 52. Qe1 Bxb3 53. g4 Qd1 54. Qe3 hxg4 55. Qxd3 g3+ 56. Kxg3 Qg1+ 57. Rg2 Qe1+ 58. Rf2 Bc5 59. Qe2 Bxf2+ 60. Qxf2 Qxf2+ 61. Kxf2 Ba2 62. Ke3 Kh6 63. f4 exf4+ 64. Kxf4 b4 0-1

[Event "Walsrode Chessemy op-A"]
[Site "Walsrode"]
[Date "2023.03.12"]
[Round "9"]
[White "Ruddat, Jarne"]
[Black "Koellner, Christof"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "1777"]
[BlackElo "2075"]
[PlyCount "136"]
[EventDate "2023.03.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. Nf3 e5 5. Bc4 Be7 6. 0-0 Nb6 7. Be2 exd4 8. Nxd4 0-0 9. a4 a5 10. b3 c6 11. Bb2 Re8 12. f4 Bf8 13. Bf3 g6 14. g3 Nbd7 15. Re1 Nc5 16. Qd2 Qb6 17. Kh1 Bg7 18. Rad1 Bg4 19. Bxg4 Nxg4 20. Nf3 Nxe4 21. Nxe4 Rxe4 22. Bxg7 Kxg7 23. Rxe4 Nf2+ 24. Kg2 Nxe4 25. Qd4+ Qxd4 26. Rxd4 f5 27. Nd2 Nxd2 28. Rxd2 Rd8 29. Kf2 Kf7 30. Kf3 Rd7 31. h3 d5 32. g4 fxg4+ 33. hxg4 Re7 34. Rd1 Kf6 35. Rh1 d4 36. Kf2 b6 37. Rh3 c5 38. Rd3 h5 39. Kg3 Re2 40. c3 dxc3 41. Rxc3 hxg4 42. Kxg4 Re4 43. Rd3 Rd4 44. Rh3 Rb4 45. Rf3 g5 46. Kg3 gxf4+ 47. Rxf4+ Ke5 48. Rf3 c4 49. bxc4 Rxa4 50. c5 b5 51. Kf2 Rc4 52. Ke2 Rxc5 53. Kd2 b4 54. Rh3 Kd5 55. Rh8 Kc6 56. Rb8 Kc7 57. Rh8 Kc6 58. Rb8 Rc4 59. Kd3 Rc3+ 60. Kd4 Kc7 61. Rb5 Ra3 62. Rh5 Kb6 63. Rh6+ Kb5 64. Rh5+ Ka4 65. Kc5 Rg3 66. Kc4 Rc3+ 67. Kd4 Rc1 68. Rh3 b3 0-1

[Event "Walsrode Chessemy op-A"]
[Site "Walsrode"]
[Date "2023.03.11"]
[Round "8"]
[White "Koellner, Christof"]
[Black "Gressmann, Hanna"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "2075"]
[BlackElo "1894"]
[PlyCount "108"]
[EventDate "2023.03.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. d4 d5 2. Bg5 c5 3. dxc5 Nc6 4. c3 a5 5. Nf3 f6 6. Bd2 e5 7. b4 axb4 8. cxb4 e4 9. Ng1 b6 10. b5 Na7 11. cxb6 Nxb5 12. a4 Bc5 13. e3 Nd6 14. Bc3 Bxb6 15. Qxd5 Bb7 16. Qe6+ Ne7 17. Nd2 Bd5 18. Qg4 0-0 19. Nh3 Qc8 20. Qxc8 Rfxc8 21. Bb4 Bc5 22. Bxc5 Rxc5 23. Be2 Rca5 24. Bd1 Nc4 25. Nf4 Nxd2 26. Kxd2 Bc6 27. Bb3+ Kh8 28. Ra3 g5 29. Ne2 Bd5 30. Bc2 f5 31. Rb1 Nc6 32. Rc3 Ne5 33. Nd4 f4 34. h3 fxe3+ 35. Kxe3 Nc4+ 36. Ke2 Nd6 37. Rb4 Kg7 38. Rc7+ Kf6 39. Nb5 Rb8 40. Rc5 Nxb5 41. axb5 Raxb5 42. Rcxb5 Rxb5 43. Rxb5 Bc4+ 44. Ke3 Bxb5 45. Bxe4 h6 46. Kd4 Be2 47. Kd5 h5 48. Kd4 Bb5 49. Bf3 h4 50. Ke3 Ke5 51. Bb7 Ba4 52. Bf3 Bb5 53. Be2 Bc6 54. Bf3 Bb5 1/2-1/2

[Event "Walsrode Chessemy op-A"]
[Site "Walsrode"]
[Date "2023.03.10"]
[Round "7"]
[White "Ramme, Christoph"]
[Black "Koellner, Christof"]
[Result "1-0"]
[ECO "D37"]
[WhiteElo "2129"]
[BlackElo "2075"]
[PlyCount "115"]
[EventDate "2023.03.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 Be7 5. Bf4 0-0 6. e3 b6 7. cxd5 Nxd5 8. Nxd5 Qxd5 9. Bd3 Qa5+ 10. Kf1 Ba6 11. Bxc7 Bxd3+ 12. Qxd3 Na6 13. Be5 Nb4 14. Qb3 Qa6+ 15. Kg1 Rac8 16. a3 Nd3 17. h3 Nc1 18. Qd1 Ne2+ 19. Kh2 f6 20. Re1 Nc3 21. Qb3 Qc4 22. Qxc4 Rxc4 23. Nd2 Rc6 24. Bg3 Na4 25. b3 Nb2 26. Ra2 Nd3 27. Rb1 Rfc8 28. b4 Rc2 29. Rba1 Nc1 30. Rxc2 Rxc2 31. Ne4 f5 32. Nd2 a5 33. bxa5 bxa5 34. a4 Bb4 35. Nf3 Nd3 36. Ng5 h6 37. Nxe6 Nxf2 38. Rf1 Ne4 39. Rxf5 g6 40. Rb5 Nd2 41. h4 Nf1+ 42. Kh3 Nxe3 43. Bf4 Nf5 44. h5 Kf7 45. Nd8+ Kg8 46. hxg6 Nxd4 47. Rb8 Kg7 48. Be5+ Kxg6 49. Bxd4 Rd2 50. Nc6 Bd6 51. Rg8+ Kf5 52. Bb6 Rd3+ 53. g3 Ra3 54. Nd4+ Ke4 55. Nb5 Rd3 56. Nxd6+ Rxd6 57. Bxa5 h5 58. Bd8 1-0

[Event "Walsrode Chessemy op-A"]
[Site "Walsrode"]
[Date "2023.03.09"]
[Round "6"]
[White "Koellner, Christof"]
[Black "Buchinger, Alexis"]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "2075"]
[BlackElo "1850"]
[PlyCount "91"]
[EventDate "2023.03.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 g6 3. Bxf6 exf6 4. e3 d5 5. g3 Bg7 6. Bg2 0-0 7. Ne2 f5 8. 0-0 c6 9. c4 dxc4 10. Nd2 Nd7 11. Nxc4 Nb6 12. Na5 Nd5 13. Qd2 Qe7 14. a3 Be6 15. b4 Nf6 16. Nf4 Bd5 17. Nxd5 cxd5 18. Rfc1 Rac8 19. Ra2 Ne4 20. Bxe4 fxe4 21. Rac2 Qd7 22. Rc3 Bf6 23. Qc2 Rxc3 24. Qxc3 Bd8 25. Nb3 Bb6 26. Rc2 h5 27. h4 f6 28. Nc5 Qf7 29. Na4 Bd8 30. Qc5 g5 31. hxg5 fxg5 32. Nc3 h4 33. g4 Bb6 34. Qxd5 Rc8 35. Qxg5+ Kf8 36. Qf5 Qxf5 37. gxf5 Kf7 38. Kh2 a5 39. Kh3 axb4 40. axb4 Bd8 41. Rc1 Rc4 42. Kg4 Bf6 43. Na2 Rxc1 44. Nxc1 Ke7 45. Ne2 b6 46. Nc3 1-0

[Event "Walsrode Chessemy op-A"]
[Site "Walsrode"]
[Date "2023.03.08"]
[Round "5"]
[White "Priyanka, Nutakki"]
[Black "Koellner, Christof"]
[Result "1-0"]
[ECO "B13"]
[WhiteElo "2318"]
[BlackElo "2075"]
[PlyCount "79"]
[EventDate "2023.03.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 c5 4. e3 Nc6 5. Nbd2 cxd4 6. exd4 g6 7. c3 Bg7 8. Bd3 0-0 9. h3 Nd7 10. 0-0 e5 11. dxe5 Ndxe5 12. Nxe5 Nxe5 13. Be2 Nc6 14. Qc1 d4 15. Ne4 dxc3 16. Nxc3 Be6 17. Bf3 Rc8 18. Bh6 Nd4 19. Bd1 Nb5 20. Bxg7 Kxg7 21. Qe3 Nxc3 22. bxc3 b6 23. Bb3 Re8 24. Ba4 Re7 25. Rad1 Qc7 26. Qd4+ f6 27. Rfe1 Bxa2 28. Qb4 Rxe1+ 29. Rxe1 Qxc3 30. Re7+ Bf7 31. Qe4 Rc7 32. Bd7 Kf8 33. Rxf7+ Kxf7 34. Qe8+ Kg7 35. Qe7+ Kh6 36. Qf8+ Kg5 37. h4+ Kf4 38. Qd6+ Qe5 39. Qd2+ Ke4 40. f3# 1-0

[Event "Walsrode Chessemy op-A"]
[Site "Walsrode"]
[Date "2023.03.07"]
[Round "4"]
[White "Koellner, Christof"]
[Black "De Winter, Arthur"]
[Result "1/2-1/2"]
[ECO "B08"]
[WhiteElo "2075"]
[BlackElo "2371"]
[PlyCount "86"]
[EventDate "2023.03.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Nbd2 Bg7 4. e4 d6 5. Bc4 0-0 6. 0-0 Nxe4 7. Nxe4 d5 8. Bd3 dxe4 9. Bxe4 c5 10. dxc5 Qc7 11. c3 Nd7 12. Bg5 Nxc5 13. Bc2 b6 14. Qd2 Bb7 15. Qe3 Rfe8 16. Rfd1 e5 17. Ne1 Qc6 18. Rd2 a5 19. Rad1 a4 20. a3 e4 21. Bb1 Be5 22. Bf4 Bxf4 23. Qxf4 Qe6 24. Rd6 Qb3 25. Qd2 Ba6 26. Rd4 Qb5 27. c4 Qc6 28. Qb4 Rab8 29. Bc2 e3 30. f3 Qe6 31. Be4 e2 32. R1d2 Nb3 33. Rd6 Qxc4 34. Rc2 Qxb4 35. axb4 Red8 36. Rcc6 Rxd6 37. Rxd6 Kf8 38. Bc6 Bc4 39. Bxa4 b5 40. Bxb3 Bxb3 41. Kf2 Ra8 42. Kxe2 Ra4 43. Nd3 Bc4 1/2-1/2

[Event "Walsrode Chessemy op-A"]
[Site "Walsrode"]
[Date "2023.03.06"]
[Round "3"]
[White "Holtel, Jasper"]
[Black "Koellner, Christof"]
[Result "1/2-1/2"]
[ECO "A07"]
[WhiteElo "2325"]
[BlackElo "2075"]
[PlyCount "92"]
[EventDate "2023.03.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 Bg4 3. Bg2 c6 4. h3 Bxf3 5. Bxf3 Nd7 6. d4 e6 7. Nd2 f5 8. c4 Bd6 9. e3 Qf6 10. a4 Ne7 11. b3 0-0 12. h4 e5 13. Bb2 e4 14. Bg2 Qg6 15. Bh3 Rae8 16. Qe2 Nf6 17. Bc3 Ng4 18. Rg1 Qe6 19. c5 Bc7 20. b4 h6 21. Kd1 Kh7 22. Kc2 Ng8 23. Rab1 N8f6 24. b5 b6 25. Nb3 Rb8 26. Kd2 Rfc8 27. Rgc1 Bd8 28. cxb6 axb6 29. Bb4 cxb5 30. axb5 Be7 31. Bxe7 Qxe7 32. Ke1 Qb4+ 33. Nd2 Rxc1+ 34. Rxc1 Ra8 35. f3 exf3 36. Qxf3 Re8 37. Qxf5+ g6 38. Rc7+ Re7 39. Qc8 Nxe3 40. Qb7 Nf5+ 41. Rxe7+ Nxe7 42. Bg2 Qd6 43. Nf1 Qb4+ 44. Nd2 Qd6 45. Nf1 Qb4+ 46. Nd2 Qd6 1/2-1/2

[Event "Walsrode Chessemy op-A"]
[Site "Walsrode"]
[Date "2023.03.04"]
[Round "1"]
[White "Koellner, Christof"]
[Black "Reinl, Anton"]
[Result "1-0"]
[ECO "A43"]
[WhiteElo "2075"]
[BlackElo "1679"]
[PlyCount "63"]
[EventDate "2023.03.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. d4 c5 2. d5 Nf6 3. Nc3 d6 4. e4 g6 5. Nf3 Bg4 6. Be2 Bg7 7. 0-0 0-0 8. Nd2 Bxe2 9. Qxe2 Na6 10. Nc4 Nc7 11. a4 Re8 12. Rd1 e5 13. Bg5 h6 14. Bh4 Qd7 15. f3 Nh5 16. Bf2 f5 17. exf5 Nf4 18. Qd2 gxf5 19. Be3 Nh5 20. Bxh6 f4 21. Bxg7 Nxg7 22. Ne4 Nh5 23. Ncxd6 Re7 24. Nxb7 Rg7 25. Kf1 Kh8 26. Nbxc5 Qf7 27. d6 Ne6 28. Nxe6 Qxe6 29. Qd5 Qg6 30. Qxa8+ Rg8 31. Qxg8+ Qxg8 32. d7 1-0

[Event "Bayern-chI Bank Hofmann 25th"]
[Site "Tegernsee"]
[Date "2022.11.09"]
[Round "5"]
[White "Leeb, Simon"]
[Black "Koellner, Christof"]
[Result "1/2-1/2"]
[ECO "C41"]
[WhiteElo "2276"]
[BlackElo "2021"]
[PlyCount "91"]
[EventDate "2022.11.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 211 Extra"]
[Source "ChessBase"]
[SourceDate "2023.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.01.31"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. a4 0-0 7. 0-0 exd4 8. Qxd4 a5 9. h3 h6 10. Be3 Nc5 11. Rad1 Nfd7 12. e5 dxe5 13. Nxe5 Bd6 14. Nxd7 Bxd7 15. Nd5 Ne6 16. Qd2 Bxa4 17. f4 Nc5 18. Qf2 Ne4 19. Qf3 Re8 20. Bd4 Bd7 21. Rfe1 b5 22. Rxe4 Rxe4 23. Qxe4 bxc4 24. Bc3 Ra6 25. Qxc4 Rc6 26. Qd3 Rc5 27. Nxc7 Bxc7 28. Qxd7 Qxd7 29. Rxd7 Bxf4 30. Ra7 Bc7 31. Kf1 f6 32. Ke2 Be5 33. Rxa5 Rxa5 34. Bxa5 Bxb2 35. c3 Bc1 36. Kd3 Kf7 37. c4 Ke6 38. Kd4 Kd6 39. Bb4+ Kc6 40. Ke4 g6 41. Bc3 f5+ 42. Kd3 g5 43. Kd4 g4 44. Ke5 gxh3 45. gxh3 Kc5 46. Kxf5 1/2-1/2

[Event "Muenster op-A 39th"]
[Site "Muenster"]
[Date "2022.10.03"]
[Round "3"]
[White "Ollenberger, Roland"]
[Black "Koellner, Christof"]
[Result "1-0"]
[ECO "C22"]
[WhiteElo "2256"]
[BlackElo "2058"]
[PlyCount "75"]
[EventDate "2022.10.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qe3 d6 5. Bd2 Be7 6. Nc3 Nf6 7. f3 Be6 8. Bb5 0-0 9. Bxc6 bxc6 10. Nge2 Nd7 11. Nd4 Ne5 12. f4 Ng4 13. Qe2 Bd7 14. 0-0-0 Nf6 15. Rhg1 c5 16. Nf3 Bc6 17. g4 Re8 18. g5 Nd7 19. h4 Bf8 20. Qd3 Qb8 21. Nd5 Bxd5 22. exd5 Nb6 23. g6 hxg6 24. h5 c4 25. Qd4 Be7 26. hxg6 Bf6 27. gxf7+ Kxf7 28. Ng5+ Kf8 29. Nh7+ Kf7 30. Nxf6 gxf6 31. Bc3 Qd8 32. Rh1 Rh8 33. Qe4 Qe8 34. Rh7+ Rxh7 35. Qxh7+ Kf8 36. Qh8+ Ke7 37. Bxf6+ Kd7 38. Qh3+ 1-0

[Event "Oberliga Wuerttemberg 2122"]
[Site "Wuerttemberg"]
[Date "2022.05.15"]
[Round "9.8"]
[White "Koellner, Christof"]
[Black "Freiherr von Hauff, Christopher V"]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "2153"]
[BlackElo "1843"]
[PlyCount "89"]
[EventDate "2021.09.19"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]
[WhiteTeam "Deizisau II"]
[BlackTeam "Bebenhausen"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 Nc6 4. f3 Nf6 5. d5 e5 6. Bg3 Ne7 7. e4 Ng6 8. Bf2 Bb4+ 9. Nd2 Bxd2+ 10. Qxd2 d6 11. Bb5+ Nd7 12. c3 a6 13. Ba4 0-0 14. Ne2 b5 15. Bc2 Nc5 16. b4 Nd7 17. a4 Bb7 18. 0-0 f5 19. axb5 f4 20. Bd3 Qg5 21. bxa6 Bc8 22. Kh1 Nf6 23. a7 Qh5 24. Nc1 Bh3 25. Be1 Bd7 26. Qf2 c6 27. dxc6 Bxc6 28. b5 Bb7 29. Qb6 Rf7 30. Bc4 d5 31. exd5 Nxd5 32. Qxb7 Rxb7 33. Bxd5+ Kf8 34. Bxb7 Rxa7 35. Rxa7 e4 36. Ra8+ Ke7 37. Bxe4 Qxb5 38. Bd3 Qb2 39. Ra7+ Kf6 40. Ra6+ Kf7 41. Bc4+ Kf8 42. Nd3 Qe2 43. Rf2 Qe8 44. Rfa2 Qe3 45. Bf2 1-0

[Event "Oberliga Wuerttemberg 2122"]
[Site "Wuerttemberg"]
[Date "2022.04.10"]
[Round "8.6"]
[White "Berning, Boris"]
[Black "Koellner, Christof"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "2162"]
[BlackElo "2153"]
[PlyCount "84"]
[EventDate "2021.09.19"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]
[WhiteTeam "Ulm Weisse Dame"]
[BlackTeam "Deizisau II"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nge2 c6 5. h3 h5 6. Be3 Be7 7. g3 b5 8. a3 Qc7 9. Bg2 Nbd7 10. Qd2 a5 11. f4 Ba6 12. 0-0 0-0 13. Nd1 Rfe8 14. Nf2 Bf8 15. g4 b4 16. axb4 axb4 17. Rfe1 Bxe2 18. Rxa8 Rxa8 19. Qxe2 g6 20. Bf3 hxg4 21. hxg4 Bg7 22. dxe5 dxe5 23. f5 gxf5 24. gxf5 Kf8 25. Qc4 c5 26. Nd3 Rc8 27. Ra1 Ke8 28. Ra6 Bf8 29. Nf2 Be7 30. Nh3 Nb6 31. Qb5+ Nfd7 32. Ng5 Qd8 33. Nh7 Rb8 34. Qc6 Qc8 35. Rxb6 Qxc6 36. Rxc6 f6 37. Bh5+ Kd8 38. Bh6 Rc8 39. Ra6 Kc7 40. Ra7+ Kc6 41. Bf7 c4 42. Be6 Bc5+ 0-1

[Event "Cattolica Primavera op"]
[Site "Cattolica"]
[Date "2022.03.20"]
[Round "8"]
[White "Sala, Giulia"]
[Black "Koellner, Christof"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2057"]
[BlackElo "2142"]
[PlyCount "137"]
[EventDate "2022.03.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 207 Extra"]
[Source "ChessBase"]
[SourceDate "2022.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.05.31"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. g3 c6 5. Bg2 e5 6. Nge2 b5 7. a3 Be7 8. 0-0 0-0 9. h3 Bb7 10. g4 a5 11. Ng3 b4 12. Nce2 Ba6 13. Re1 g6 14. Bh6 Bxe2 15. Qxe2 exd4 16. Bxf8 Bxf8 17. Qd2 bxa3 18. bxa3 Qb6 19. Ne2 Re8 20. Nxd4 Nc5 21. Rab1 Qc7 22. Qc3 Nfd7 23. Nb3 a4 24. Nxc5 Nxc5 25. Qb2 Bh6 26. Qb6 Rc8 27. Qxc7 Rxc7 28. Red1 Bf4 29. Rb6 Be5 30. g5 h6 31. gxh6 Kh7 32. f3 Kxh6 33. Kf2 Bf4 34. Bf1 Kg5 35. Bc4 Kf6 36. Rb8 Nd7 37. Rb4 Ra7 38. Rdb1 Nc5 39. Rb6 Rc7 40. Ba6 Ke7 41. h4 Be5 42. Ke2 Bc3 43. Bc4 Bf6 44. Rh1 Nd7 45. Rb4 Bc3 46. Rbb1 Nf6 47. Rhd1 Nh5 48. Kd3 Bf6 49. Rb4 Ra7 50. Rdb1 d5 51. exd5 cxd5 52. Bxd5 Kd6 53. Be4 Nf4+ 54. Ke3 Ng2+ 55. Kf2 Nxh4 56. Rb6+ Ke7 57. Rb7+ Rxb7 58. Rxb7+ Ke6 59. Rb4 Be7 60. Rxa4 f5 61. Bd3 Bc5+ 62. Kg3 g5 63. f4 Bd6 64. Ra6 Ng6 65. Bxf5+ Kxf5 66. Rxd6 Nxf4 67. Kf2 Nh5 68. a4 Ke5 69. Rh6 1-0

[Event "Cattolica Primavera op"]
[Site "Cattolica"]
[Date "2022.03.19"]
[Round "6"]
[White "Dobboletta, Alex"]
[Black "Koellner, Christof"]
[Result "1-0"]
[ECO "E14"]
[WhiteElo "2176"]
[BlackElo "2142"]
[PlyCount "101"]
[EventDate "2022.03.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 207 Extra"]
[Source "ChessBase"]
[SourceDate "2022.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.05.31"]
[SourceQuality "1"]

1. Nf3 d5 2. e3 Nf6 3. c4 e6 4. b3 Be7 5. Bb2 0-0 6. d4 b6 7. Bd3 Bb7 8. 0-0 Nbd7 9. cxd5 exd5 10. Ne5 Bd6 11. Nd2 Qe7 12. f4 Ne4 13. Nxe4 dxe4 14. Bc4 Rad8 15. Qe2 Nf6 16. a3 Nd5 17. b4 f6 18. Ng4 c6 19. Rfc1 Kh8 20. Nf2 Rfe8 21. Nd1 Nc7 22. Qh5 Rf8 23. Bb3 Ra8 24. Bc3 a5 25. bxa5 Bxa3 26. Rc2 bxa5 27. Nf2 a4 28. Bc4 Bd6 29. Rb2 Bc8 30. Rb6 Bd7 31. d5 Rfb8 32. dxc6 Rxb6 33. cxd7 Rc6 34. Bd5 g6 35. Qd1 Rxc3 36. Bxa8 Nxa8 37. Nxe4 Rc6 38. Qxa4 Qxd7 39. Qxa8+ Kg7 40. Qg8+ Kh6 41. Nxf6 Qe7 42. Ng4+ Kh5 43. Qd5+ Kxg4 44. Qxc6 Qxe3+ 45. Kh1 Bxf4 46. Qd7+ Kh5 47. Qxh7+ Bh6 48. Ra5+ g5 49. Qf7+ Kh4 50. g3+ Kg4 51. Ra4+ 1-0

[Event "Cattolica Primavera op"]
[Site "Cattolica"]
[Date "2022.03.18"]
[Round "5"]
[White "Koellner, Christof"]
[Black "Scarpa, Silvia"]
[Result "1/2-1/2"]
[ECO "A43"]
[WhiteElo "2142"]
[BlackElo "2041"]
[PlyCount "68"]
[EventDate "2022.03.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 207 Extra"]
[Source "ChessBase"]
[SourceDate "2022.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.05.31"]
[SourceQuality "1"]

1. d4 c5 2. d5 Nf6 3. Nc3 e6 4. e4 d6 5. Nf3 Be7 6. Be2 0-0 7. 0-0 exd5 8. exd5 Nbd7 9. a4 Re8 10. h3 Nf8 11. Bf4 Ng6 12. Bh2 a6 13. a5 b5 14. axb6 Qxb6 15. Ra2 Bb7 16. Qd3 Nd7 17. Qf5 Bc8 18. Qe4 Bb7 19. Qa4 Qc7 20. Bc4 Bf6 21. Qa5 Qxa5 22. Rxa5 Nb6 23. Nd2 Bg5 24. f4 Bf6 25. Na4 Nxd5 26. Bxd5 Bxd5 27. Nb6 Bd8 28. Nxd5 Bxa5 29. Nc4 Bd8 30. f5 Nf8 31. Nxd6 Re2 32. Rf2 Re1+ 33. Rf1 Re2 34. Rf2 Re1+ 1/2-1/2

[Event "Cattolica Primavera op"]
[Site "Cattolica"]
[Date "2022.03.18"]
[Round "4"]
[White "Persico, Lorenzo"]
[Black "Koellner, Christof"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "2080"]
[BlackElo "2142"]
[PlyCount "58"]
[EventDate "2022.03.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 207 Extra"]
[Source "ChessBase"]
[SourceDate "2022.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.05.31"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. a4 0-0 7. 0-0 exd4 8. Nxd4 Ne5 9. Ba2 Nc6 10. Bf4 Nb4 11. Bb3 a6 12. Re1 Ng4 13. Qd2 Bf6 14. Rad1 Be5 15. h3 Bxf4 16. Qxf4 Ne5 17. Qg3 Qf6 18. Nce2 c5 19. Nf3 Nxf3+ 20. Qxf3 Qxf3 21. gxf3 c4 22. Rd4 b5 23. Rb1 Bb7 24. c3 Nc6 25. Bc2 Nxd4 26. Nxd4 Bc8 27. Kg2 Bd7 28. Rd1 bxa4 29. Ra1 Rfb8 0-1

[Event "Cattolica Primavera op"]
[Site "Cattolica"]
[Date "2022.03.17"]
[Round "2"]
[White "Chennaoui, Yasin"]
[Black "Koellner, Christof"]
[Result "1-0"]
[ECO "E11"]
[WhiteElo "2015"]
[BlackElo "2142"]
[PlyCount "87"]
[EventDate "2022.03.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 207 Extra"]
[Source "ChessBase"]
[SourceDate "2022.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.05.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Bb4+ 5. Bd2 Be7 6. Bg2 c6 7. Qc2 Nbd7 8. 0-0 0-0 9. b3 b6 10. Bc3 Ne4 11. Bb2 Bb7 12. Nbd2 f5 13. Ne1 Nxd2 14. Qxd2 Bf6 15. Nd3 Rc8 16. Rac1 Bg5 17. Nf4 Qe7 18. h4 Bh6 19. Qe3 Rce8 20. cxd5 Bxf4 21. gxf4 exd5 22. Qxe7 Rxe7 23. Ba3 Rxe2 24. Bxf8 Nxf8 25. Bf3 Re7 26. Rc3 Ng6 27. Re3 Rxe3 28. fxe3 Nxh4 29. Kf2 Nxf3 30. Kxf3 Kf7 31. Rc1 a6 32. b4 Kf6 33. a4 h6 34. Kg3 g6 35. Rc2 g5 36. Rh2 Kg7 37. fxg5 hxg5 38. Rh5 Kg6 39. Rh8 a5 40. b5 cxb5 41. axb5 a4 42. Rb8 a3 43. Rxb7 a2 44. Rxb6+ 1-0

[Event "Cattolica Primavera op"]
[Site "Cattolica"]
[Date "2022.03.17"]
[Round "3"]
[White "Koellner, Christof"]
[Black "Meyling, Lennart"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "2142"]
[BlackElo "2072"]
[PlyCount "78"]
[EventDate "2022.03.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 207 Extra"]
[Source "ChessBase"]
[SourceDate "2022.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.05.31"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Nf6 3. e3 g6 4. Nd2 Bg7 5. Be2 0-0 6. h4 h5 7. Ngf3 c5 8. c3 b6 9. Ne5 Nbd7 10. Nxd7 Nxd7 11. g4 e5 12. dxe5 hxg4 13. e6 fxe6 14. Bxg4 Qf6 15. Rh2 Ne5 16. Be2 Bb7 17. Nf3 Nxf3+ 18. Bxf3 Qf7 19. Be2 d4 20. cxd4 cxd4 21. Rc1 Rac8 22. Bc4 Rxc4 23. Rxc4 e5 24. Qc2 d3 25. Qa4 d2+ 26. Kxd2 Qd5+ 27. Kc1 b5 28. Qc2 Qxc4 29. Qxc4+ bxc4 30. Bg3 Bf3 31. Kc2 Kf7 32. Kc3 Ke6 33. Kxc4 Rc8+ 34. Kb5 Rb8+ 35. Ka6 Rxb2 36. Kxa7 Bf8 37. a4 Bc5+ 38. Ka6 Bb7+ 39. Ka5 Bb6# 0-1

[Event "Cattolica Primavera op"]
[Site "Cattolica"]
[Date "2022.03.16"]
[Round "1"]
[White "Koellner, Christof"]
[Black "Dimitrov, Radoslav"]
[Result "0-1"]
[ECO "D12"]
[WhiteElo "2142"]
[BlackElo "2478"]
[PlyCount "56"]
[EventDate "2022.03.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 207 Extra"]
[Source "ChessBase"]
[SourceDate "2022.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.05.31"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. e3 Bf5 4. Bd3 e6 5. c4 c6 6. 0-0 Ne4 7. b3 Nd7 8. Qc2 Bg6 9. Bb2 Bd6 10. Nc3 f5 11. Ne1 Bh5 12. a4 Qe7 13. a5 a6 14. f4 g5 15. g3 gxf4 16. exf4 Rg8 17. Bxe4 dxe4 18. Ne2 Bxe2 19. Qxe2 0-0-0 20. Bc3 h5 21. Qxh5 Rg4 22. Qh3 Rdg8 23. Kf2 Bxf4 24. gxf4 Rh4 25. Qg3 Rxg3 26. hxg3 Rh2+ 27. Ng2 Qh7 28. Rg1 Qh5 0-1

[Event "Reinstorf op"]
[Site "Reinstorf"]
[Date "2022.02.05"]
[Round "8"]
[White "Pellicoro, Nathalie"]
[Black "Koellner, Christof"]
[Result "0-1"]
[ECO "B40"]
[WhiteElo "1835"]
[BlackElo "2111"]
[PlyCount "94"]
[EventDate "2022.01.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. c3 Qa5 4. Bd3 b5 5. 0-0 Bb7 6. Bc2 d6 7. d4 Nd7 8. Re1 Qc7 9. Nbd2 g6 10. Nf1 Bg7 11. Bf4 e5 12. dxe5 dxe5 13. Bd2 Nb6 14. Qe2 Bc6 15. Rad1 Nf6 16. Bc1 0-0 17. b3 c4 18. Ba3 Rfd8 19. Rxd8+ Rxd8 20. N3d2 cxb3 21. Bxb3 a5 22. f3 Be8 23. Bb2 a4 24. Bd1 Bh6 25. Ne3 Qc5 26. Ndf1 Nh5 27. Qf2 a3 28. Bc1 Nf4 29. Ng4 Qxf2+ 30. Nxf2 Nxg2 31. Bxh6 Nxe1 32. Be2 f6 33. Bd2 Nc2 34. Bd3 Nc4 35. Bc1 Ne1 36. Be2 Nb2 37. h3 Ned3 38. Nxd3 Nxd3 39. Bxa3 Nf4 40. Ng3 Ra8 41. Bc5 Nxh3+ 42. Kf1 Rxa2 43. Bd1 Bf7 44. Ke1 Nf4 45. Be7 Kg7 46. Ne2 Nd3+ 47. Kf1 Ra1 0-1

[Event "Reinstorf op"]
[Site "Reinstorf"]
[Date "2022.02.04"]
[Round "7"]
[White "Koellner, Christof"]
[Black "Koellner, Aaron Noah"]
[Result "0-1"]
[ECO "A47"]
[WhiteElo "2111"]
[BlackElo "2167"]
[PlyCount "110"]
[EventDate "2022.01.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 b6 3. Nbd2 Bb7 4. e3 e6 5. Bd3 c5 6. b3 cxd4 7. exd4 Nd5 8. Nb1 Bb4+ 9. Bd2 Bd6 10. c4 Nf4 11. Bf1 Qf6 12. g3 Nd3+ 13. Bxd3 Bxf3 14. Bg5 Bb4+ 15. Kf1 Bxd1 16. Bxf6 gxf6 17. Be4 Nc6 18. a3 Bd6 19. Nd2 Bh5 20. d5 exd5 21. Bxd5 0-0-0 22. f4 f5 23. Nf3 Rde8 24. Nh4 Nd4 25. b4 Be7 26. Ng2 Bf6 27. Ra2 Re7 28. Kf2 Rhe8 29. Re1 Ne2 30. Rc2 Bd4+ 31. Kf1 Nc3 32. Rxe7 Rxe7 33. Nh4 Be2+ 34. Kg2 Bd3 35. Rd2 Re2+ 36. Rxe2 Nxe2 37. Bxf7 a5 38. bxa5 bxa5 39. Bg8 a4 40. Bxh7 Bc5 41. Bxf5 Bxc4 42. Ng6 Bxa3 43. Ne5 Bb5 44. h4 Bf8 45. Bc2 a3 46. Bb3 Nc3 47. g4 d6 48. Ng6 Bc6+ 49. Kh3 Bd5 50. Bxd5 Nxd5 51. Nxf8 a2 52. f5 a1Q 53. g5 Qg1 54. Ne6 Ne3 55. f6 Qg2# 0-1

[Event "Reinstorf op"]
[Site "Reinstorf"]
[Date "2022.02.03"]
[Round "6"]
[White "Borkhardt, Arndt"]
[Black "Koellner, Christof"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "1940"]
[BlackElo "2111"]
[PlyCount "94"]
[EventDate "2022.01.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. 0-0 c6 7. a4 Qc7 8. Re1 h6 9. h3 Nf8 10. Qe2 g5 11. Ba2 Ng6 12. Qc4 Bd8 13. Be3 g4 14. hxg4 Nxg4 15. Rad1 Nxe3 16. fxe3 Qe7 17. b4 0-0 18. a5 Bg4 19. Rf1 Rc8 20. Rd2 Kg7 21. Qd3 f5 22. dxe5 fxe4 23. exd6 exd3 24. dxe7 Bxe7 25. Rxd3 Bxb4 26. Rd4 Bxc3 27. Rxg4 h5 28. Rg5 Kh6 29. Bc4 Rxf3 30. Rxg6+ Kxg6 31. Rxf3 Bxa5 32. Rf7 Rb8 33. Rd7 Bc3 34. e4 h4 35. Kf2 Be5 36. Re7 Bg3+ 37. Ke3 a5 38. e5 a4 39. Bf7+ Kf5 40. Ba2 Bxe5 41. Rf7+ Kg5 42. Ke4 Bf6 43. Rc7 Kg4 44. Rf7 Bb2 45. Rf3 Re8+ 46. Kd3 b5 47. c3 c5 0-1

[Event "Reinstorf op"]
[Site "Reinstorf"]
[Date "2022.02.02"]
[Round "5"]
[White "Koellner, Christof"]
[Black "Schulze, Lara"]
[Result "0-1"]
[ECO "A46"]
[WhiteElo "2111"]
[BlackElo "2282"]
[PlyCount "106"]
[EventDate "2022.01.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. d4 e6 2. Nf3 Nf6 3. Bg5 h6 4. Bxf6 Qxf6 5. Nbd2 d6 6. c3 g5 7. h3 Bg7 8. Qc2 Nd7 9. e3 Qe7 10. Bd3 b6 11. 0-0-0 Bb7 12. Kb1 0-0-0 13. Qa4 Kb8 14. Ba6 Ba8 15. Bb5 Nf6 16. Ne1 Ne4 17. Nxe4 Bxe4+ 18. Nd3 c5 19. f3 Bb7 20. Nc1 Qc7 21. Rd2 Qc8 22. Rhd1 a6 23. Bf1 b5 24. Qa5 Qc7 25. Qxc7+ Kxc7 26. dxc5 dxc5 27. Rxd8 Rxd8 28. Rxd8 Kxd8 29. Kc2 Kc7 30. b3 Kd6 31. Ne2 f5 32. Nc1 e5 33. Nd3 e4 34. Ne1 b4 35. cxb4 cxb4 36. Kd1 Bc3 37. Be2 a5 38. Nc2 Ke5 39. Kc1 f4 40. fxe4 Bxe4 41. Bf1 Bd5 42. exf4+ Kxf4 43. Kd1 Be4 44. g4 Kf3 45. Bb5 Kf2 46. Bd7 Bg2 47. Be8 Bxh3 48. Bh5 Bg2 49. Kc1 Bh3 50. Kd1 Kf3 51. Kc1 Bxg4 52. Bxg4+ Kxg4 53. Ne3+ Kf3 0-1

[Event "Reinstorf op"]
[Site "Reinstorf"]
[Date "2022.02.01"]
[Round "4"]
[White "Weyandt, Manfred"]
[Black "Koellner, Christof"]
[Result "0-1"]
[ECO "B07"]
[BlackElo "2111"]
[PlyCount "58"]
[EventDate "2022.01.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. e4 d6 2. f4 d5 3. exd5 Nf6 4. Nc3 Nxd5 5. Nxd5 Qxd5 6. d4 Qe4+ 7. Qe2 Qxd4 8. Nf3 Qb6 9. Qb5+ Qxb5 10. Bxb5+ c6 11. Bc4 Bf5 12. Nd4 Be4 13. 0-0 Nd7 14. Re1 Nf6 15. Bb3 e6 16. c3 Bc5 17. Bd2 0-0-0 18. Rad1 Bxd4+ 19. cxd4 Rxd4 20. Be3 Rxd1 21. Bxd1 b6 22. Bd4 Bd5 23. Be2 Kd7 24. b4 Rc8 25. Ba6 Rd8 26. Bd3 Ke7 27. Bb1 Nh5 28. g3 Bxa2 29. Bxa2 Rxd4 0-1

[Event "Reinstorf op"]
[Site "Reinstorf"]
[Date "2022.01.31"]
[Round "3"]
[White "Koellner, Christof"]
[Black "Skytte, Rasmus"]
[Result "0-1"]
[ECO "D01"]
[WhiteElo "2111"]
[BlackElo "2376"]
[PlyCount "124"]
[EventDate "2022.01.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 d5 3. e3 c5 4. Bxf6 gxf6 5. Nc3 Nc6 6. Qh5 cxd4 7. exd4 e6 8. Nf3 Qa5 9. Bb5 Bb4 10. 0-0 Bxc3 11. Bxc6+ bxc6 12. bxc3 Qxc3 13. Rfe1 Qxc2 14. Nh4 Rg8 15. Qh6 Bd7 16. Qxf6 Kf8 17. Rac1 Qd3 18. Re3 Qd2 19. Rce1 Qb4 20. g3 Re8 21. Qh6+ Rg7 22. Nf5 exf5 23. Rxe8+ Bxe8 24. Rxe8+ Kxe8 25. Qxg7 Qe1+ 26. Kg2 Qe4+ 27. Kg1 f4 28. Qg8+ Ke7 29. Qg5+ Kd7 30. gxf4 Qxd4 31. Qf5+ Ke7 32. Qxh7 Qxf4 33. Qb1 Qg4+ 34. Kf1 Qc4+ 35. Kg1 Qg4+ 36. Kf1 Qc4+ 37. Kg1 a6 38. Qb7+ Kf6 39. Qd7 d4 40. Qd6+ Kg7 41. Qg3+ Kf8 42. Qb8+ Ke7 43. Qc7+ Ke6 44. Qc8+ Ke5 45. Qh8+ Ke4 46. Qh7+ f5 47. Kg2 Qd5 48. f3+ Kd3 49. h4 Kc2 50. Qa7 d3 51. Qxa6 d2 52. Qa4+ Kc1 53. Qa3+ Kb1 54. Qb4+ Kxa2 55. Qa4+ Kb2 56. Qd1 c5 57. h5 c4 58. h6 Qg8+ 59. Kf2 c3 60. Ke2 Qe6+ 61. Kd3 Qd5+ 62. Ke3 c2 0-1

[Event "Reinstorf op"]
[Site "Reinstorf"]
[Date "2022.01.30"]
[Round "2"]
[White "Tan, Justin Hy"]
[Black "Koellner, Christof"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "2526"]
[BlackElo "2111"]
[PlyCount "116"]
[EventDate "2022.01.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. f3 d5 4. e5 Nfd7 5. f4 c5 6. c3 Nc6 7. Be3 cxd4 8. cxd4 Nb6 9. Nc3 h5 10. Bd3 Bg4 11. Nf3 e6 12. 0-0 g6 13. Rc1 Rc8 14. a3 Be7 15. h3 Bf5 16. Be2 Na5 17. Nd2 h4 18. Nb5 a6 19. Rxc8 Nxc8 20. Nc3 Qc7 21. Qa4+ Kf8 22. Rc1 b5 23. Qd1 Qd8 24. Qe1 Nc4 25. Nd1 g5 26. b3 Nxa3 27. Nf1 Nc2 28. Qf2 Ba3 29. Rxc2 Bxc2 30. fxg5 Bg6 31. Bd2 Be7 32. Qf4 Na7 33. Nh2 Nc6 34. Nf3 Qb6 35. b4 Ke8 36. Nf2 Kd7 37. Nd3 a5 38. Nc5+ Kc7 39. Nxh4 Rxh4 40. Qxh4 axb4 41. Be3 Qa5 42. Nb3 Qa2 43. Bd1 Qb1 44. Bc1 Na5 45. Qh8 Nxb3 46. Qe8 Bd8 47. Bxb3 Qxb3 48. Kh2 Qc2 49. Qxb5 Qxc1 50. Qa5+ Kd7 51. Qxb4 Be7 52. Qa4+ Qc6 53. Qa7+ Ke8 54. Qb8+ Bd8 55. h4 Be4 56. Kg3 Qc3+ 57. Kg4 Qxd4 58. Kh5 Bg6+ 0-1

[Event "Reinstorf op"]
[Site "Reinstorf"]
[Date "2022.01.29"]
[Round "1"]
[White "Koellner, Christof"]
[Black "Zoellner, Bente"]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "2111"]
[BlackElo "1562"]
[PlyCount "51"]
[EventDate "2022.01.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 g6 3. Bxf6 exf6 4. c4 c5 5. e3 cxd4 6. exd4 Bb4+ 7. Nc3 0-0 8. Qd2 Re8+ 9. Nge2 Nc6 10. 0-0-0 Ne7 11. d5 Nf5 12. Kb1 Qb6 13. g4 Nd6 14. Qf4 Kg7 15. h4 Ba3 16. Rd2 Bc5 17. Ng3 Bb4 18. Rd3 Re1+ 19. Kc2 Qa6 20. h5 g5 21. h6+ Kf8 22. Qxf6 Nxc4 23. Qg7+ Ke8 24. Qg8+ Bf8 25. Rf3 f6 26. Bxc4 1-0

[Event "Oberliga Wuerttemberg 2122"]
[Site "Wuerttemberg"]
[Date "2021.12.19"]
[Round "4.5"]
[White "Koellner, Christof"]
[Black "Birkenmaier, Rainer"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "2153"]
[BlackElo "2101"]
[PlyCount "172"]
[EventDate "2021.09.19"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]
[WhiteTeam "Deizisau II"]
[BlackTeam "Biberach"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. d4 g6 2. Nf3 Bg7 3. Nbd2 d5 4. e3 Nf6 5. b4 Bg4 6. Be2 Nbd7 7. c4 c6 8. 0-0 0-0 9. a4 dxc4 10. Nxc4 Nd5 11. Bd2 a6 12. Rc1 Rc8 13. h3 Bxf3 14. Bxf3 N7b6 15. Na5 Qd7 16. e4 Nf6 17. Be3 Na8 18. Nc4 Rfd8 19. Qc2 Ne8 20. Rfd1 Qc7 21. Qb3 Qb8 22. Bg4 e6 23. e5 Rd7 24. Nd2 Nac7 25. Ne4 Bf8 26. Nc5 Bxc5 27. dxc5 Nd5 28. Bd4 Rcd8 29. Bb2 b5 30. a5 Ng7 31. g3 Re8 32. h4 Qd8 33. Bf3 h5 34. Rc2 Qe7 35. Bc1 Nf5 36. Bg5 Qf8 37. Bxd5 Rxd5 38. Rxd5 exd5 39. Qb2 Re6 40. Re2 Qe8 41. Bf6 Kh7 42. Qd2 Qf8 43. Qf4 Qh6 44. Bg5 Qg7 45. Kg2 Qf8 46. Re1 Qe8 47. Kf1 Qd7 48. Rd1 Re8 49. Bf6 Nh6 50. Kg2 Qg4 51. f3 Qxf4 52. gxf4 Nf5 53. Kf2 Kg8 54. Ke2 Kf8 55. Kd3 Re6 56. Bg5 Ke8 57. Rh1 Kd7 58. Rc1 Re8 59. Rd1 Ke6 60. Rg1 Rb8 61. Rd1 Rb7 62. Rg1 Rd7 63. Rg2 d4 64. Rd2 Ng7 65. Ke4 d3 66. Rxd3 Rxd3 67. Kxd3 Kd5 68. Bh6 Ne6 69. Bg5 Nd4 70. Bd8 Nxf3 71. Ke3 Nd4 72. Kd3 Ne6 73. Bg5 Nxg5 74. fxg5 Kxe5 75. Ke3 f6 76. gxf6 Kxf6 77. Kf4 g5+ 78. hxg5+ Kg6 79. Ke5 Kxg5 80. Kd6 h4 81. Kxc6 h3 82. Kd7 h2 83. c6 h1Q 84. c7 Qb7 85. Kd8 Kf6 86. c8Q Qe7# 0-1

[Event "Deizisau Autumn op 15th"]
[Site "Deizisau"]
[Date "2021.11.01"]
[Round "7"]
[White "Coellen, Florian"]
[Black "Koellner, Christof"]
[Result "0-1"]
[ECO "A41"]
[WhiteElo "1922"]
[BlackElo "2153"]
[PlyCount "104"]
[EventDate "2021.10.29"]
[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 d6 2. c4 e5 3. d5 f5 4. Nc3 Nf6 5. g3 Be7 6. Bg2 0-0 7. e4 fxe4 8. Nxe4 Bf5 9. Nc3 Na6 10. Nge2 Nb4 11. 0-0 a5 12. h3 Qd7 13. Kh2 h6 14. f4 Bc2 15. Qd2 Bh7 16. Qd1 Rae8 17. a3 Nd3 18. Ra2 exf4 19. Nxf4 Nxf4 20. Bxf4 Bd8 21. b3 Ne4 22. Nxe4 Bxe4 23. Bd2 Bxg2 24. Kxg2 Rxf1 25. Qxf1 a4 26. b4 Bf6 27. Qd3 Qe7 28. Kf2 Qf7 29. Kg2 Qh5 30. Bf4 Be5 31. g4 Qf7 32. Bxe5 Rxe5 33. Re2 Qf4 34. Qf3 Qxc4 35. Rxe5 dxe5 36. d6 e4 37. Qf4 Qe2+ 38. Kg1 Qd1+ 39. Kg2 Qf3+ 40. Qxf3 exf3+ 41. Kxf3 cxd6 42. Ke4 Kf7 43. Kd5 Ke7 44. b5 g5 45. Kc4 Ke6 46. Kb4 Kd5 47. Kxa4 Kc5 48. Ka5 d5 49. a4 d4 50. b6 d3 51. h4 d2 52. hxg5 d1Q 0-1

[Event "Deizisau Autumn op 15th"]
[Site "Deizisau"]
[Date "2021.11.01"]
[Round "6"]
[White "Koellner, Christof"]
[Black "Dilthey, Lennart"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "2153"]
[BlackElo "1775"]
[PlyCount "59"]
[EventDate "2021.10.29"]
[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 Nf6 2. Bg5 e6 3. Nd2 Be7 4. e3 d5 5. Bd3 h6 6. Bh4 Nbd7 7. f4 c5 8. c3 b6 9. Ngf3 Qc7 10. Ne5 g5 11. Bg3 Nxe5 12. fxe5 Nd7 13. Qh5 Bb7 14. 0-0 0-0-0 15. Rxf7 Rde8 16. Raf1 Nb8 17. R1f6 Nc6 18. Rxh6 Rhg8 19. Qg4 Nd8 20. Rfh7 Kb8 21. Rg6 Rxg6 22. Bxg6 Rf8 23. Nf3 cxd4 24. exd4 Ba6 25. h4 Qc4 26. Nd2 Qxa2 27. Rxe7 Qa1+ 28. Kh2 Qxb2 29. Qxg5 Rf1 30. Re8 1-0

[Event "Oberliga Wuerttemberg 2122"]
[Site "Wuerttemberg"]
[Date "2021.10.31"]
[Round "2.6"]
[White "Thoma, Christian"]
[Black "Koellner, Christof"]
[Result "1/2-1/2"]
[ECO "A21"]
[WhiteElo "2177"]
[BlackElo "2153"]
[PlyCount "94"]
[EventDate "2021.09.19"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]
[WhiteTeam "Schmiden/Cannstatt"]
[BlackTeam "Deizisau II"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. d4 d6 2. c4 e5 3. Nf3 e4 4. Ng5 f5 5. Nc3 Be7 6. Nh3 Nf6 7. e3 0-0 8. Qb3 c6 9. Be2 Na6 10. Bd2 Nc7 11. Nf4 Qe8 12. h4 Qf7 13. f3 Bd8 14. d5 exf3 15. gxf3 Nh5 16. Nxh5 Qxh5 17. 0-0-0 Qf7 18. Kb1 Na6 19. Be1 Nc5 20. Qc2 Bf6 21. dxc6 bxc6 22. Rxd6 Be7 23. Bg3 Qe8 24. Rd2 Nb7 25. Be5 Bxh4 26. Bxg7 Kxg7 27. Rxh4 Qxe3 28. Rd1 Rf6 29. Rdh1 h6 30. Nd1 Qe5 31. f4 Qd4 32. Bf3 Nc5 33. Re1 Be6 34. Bxc6 Bxc4 35. Qg2+ Rg6 36. Qh1 Rd8 37. Nc3 Bd3+ 38. Ka1 Ne4 39. Bxe4 Bxe4 40. Nxe4 fxe4 41. f5 Rb6 42. Qg2+ Kh7 43. a3 Rg8 44. Rhxe4 Rxg2 45. Rxd4 Kg7 46. Re6 Rbxb2 47. Rd7+ Kf8 1/2-1/2

[Event "Deizisau Autumn op 15th"]
[Site "Deizisau"]
[Date "2021.10.30"]
[Round "2"]
[White "Kobl, Rudolf"]
[Black "Koellner, Christof"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "1973"]
[BlackElo "2153"]
[PlyCount "73"]
[EventDate "2021.10.29"]
[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 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. 0-0 c6 7. a4 Qc7 8. Re1 h6 9. h3 Nf8 10. Nh4 g6 11. Be3 exd4 12. Bxd4 N8d7 13. f4 Rh7 14. e5 dxe5 15. fxe5 Nd5 16. e6 fxe6 17. Nxg6 N7b6 18. Bd3 Nxc3 19. Bxc3 Bc5+ 20. Kh1 Nd5 21. Qh5 Kd8 22. Be5 Bd6 23. Bxd6 Qxd6 24. Ne5 Nf6 25. Nf7+ Rxf7 26. Qxf7 Qe7 27. Qg6 Bd7 28. Rf1 Ne8 29. Rad1 Kc7 30. Rf7 Qg5 31. Qxe6 Rd8 32. Rxd7+ Rxd7 33. Qxe8 Rg7 34. Qe4 Re7 35. Qf5 Qg3 36. Rf1 Qg7 37. Qf6 1-0

[Event "Deizisau Autumn op 15th"]
[Site "Deizisau"]
[Date "2021.10.29"]
[Round "1"]
[White "Koellner, Christof"]
[Black "Vojdani, Bahram"]
[Result "1-0"]
[ECO "D03"]
[WhiteElo "2153"]
[BlackElo "1847"]
[PlyCount "65"]
[EventDate "2021.10.29"]
[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 Nf6 2. Bg5 e6 3. Nd2 d5 4. e3 Nbd7 5. Bd3 c5 6. c3 Be7 7. f4 Qb6 8. Rb1 0-0 9. Ngf3 Re8 10. Ne5 Nf8 11. 0-0 Bd7 12. Rf3 Bc6 13. Bxf6 Bxf6 14. Rh3 Bxe5 15. fxe5 g6 16. Qg4 Bb5 17. Qe2 Bxd3 18. Qxd3 Qa6 19. Qxa6 bxa6 20. dxc5 Nd7 21. b4 Nxe5 22. Rh4 Rab8 23. Rb3 Rec8 24. Ra3 Rc6 25. Rd4 Rb5 26. e4 dxe4 27. Nxe4 Kg7 28. Rd6 h5 29. Ra4 Rc7 30. Rdxa6 Nc6 31. Nd6 Rb8 32. b5 Nd8 33. Ne8+ 1-0

[Event "Muensterland op 38th"]
[Site "Muenster"]
[Date "2021.10.13"]
[Round "7"]
[White "Koellner, Christof"]
[Black "Kersten, Uwe"]
[Result "0-1"]
[ECO "A46"]
[WhiteElo "2153"]
[BlackElo "2244"]
[PlyCount "70"]
[EventDate "2021.10.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 c5 3. c3 e6 4. Bg5 b6 5. e3 Be7 6. Nbd2 Bb7 7. Bxf6 Bxf6 8. Bd3 Nc6 9. a3 Qc7 10. b4 d5 11. Rc1 0-0 12. 0-0 e5 13. e4 exd4 14. cxd4 Nxd4 15. exd5 Rad8 16. Ne4 Nxf3+ 17. Qxf3 Bd4 18. Ng5 g6 19. Bc4 Qe5 20. h4 Bxd5 21. Bxd5 Qxd5 22. Rfd1 Qxf3 23. Nxf3 Bb2 24. Rb1 Bxa3 25. b5 c4 26. Nd4 c3 27. Nc2 Bb2 28. Kf1 h5 29. g3 Rfe8 30. Ne3 Rxd1+ 31. Rxd1 Rxe3 32. fxe3 c2 33. Rd8+ Kg7 34. Rc8 c1Q+ 35. Rxc1 Bxc1 0-1

[Event "Muensterland op 38th"]
[Site "Muenster"]
[Date "2021.10.10"]
[Round "3"]
[White "Holtel, Jasper"]
[Black "Koellner, Christof"]
[Result "1-0"]
[ECO "A14"]
[WhiteElo "2305"]
[BlackElo "2153"]
[PlyCount "93"]
[EventDate "2021.10.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. 0-0 Nbd7 5. b3 Be7 6. c4 0-0 7. Bb2 c6 8. d3 Re8 9. Nc3 Bf8 10. Qc2 e5 11. cxd5 Nxd5 12. Rac1 Qa5 13. Nd2 N7b6 14. Nc4 Nxc4 15. bxc4 Nxc3 16. Bxc3 Qc7 17. Rb1 Rb8 18. Qa4 a6 19. Ba5 Qd6 20. Bb4 Qc7 21. Ba5 Qd6 22. Bb4 Qc7 23. Bxf8 Kxf8 24. Rb2 b5 25. Qc2 Qd6 26. Rc1 Bd7 27. cxb5 cxb5 28. Qc7 Rb6 29. Rbc2 g6 30. Qa7 Reb8 31. h4 h5 32. Rc7 Be8 33. Be4 b4 34. R1c5 Rb5 35. Rxb5 Rxb5 36. Rc8 Qe7 37. Qa8 Rc5 38. Bc6 Rc1+ 39. Kg2 Rxc6 40. Qxc6 a5 41. f3 f6 42. Ra8 Qf7 43. Qc5+ Kg8 44. Qxa5 g5 45. hxg5 h4 46. Qxb4 hxg3 47. gxf6 1-0

[Event "Baden-Baden Swiss 1st"]
[Site "Baden-Baden"]
[Date "2021.09.14"]
[Round "9"]
[White "Koellner, Christof"]
[Black "Laux, Dominik"]
[Result "1/2-1/2"]
[ECO "A80"]
[WhiteElo "2156"]
[BlackElo "2162"]
[PlyCount "81"]
[EventDate "2021.09.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 e6 2. Nf3 f5 3. Nc3 Nf6 4. Bg5 d5 5. a3 Be7 6. e3 0-0 7. Bf4 Bd7 8. Be2 c5 9. h3 Ne4 10. 0-0 Nxc3 11. bxc3 c4 12. Qc1 Ba4 13. Ne5 Na6 14. Qb2 Qc8 15. Qa2 Nc7 16. Rfb1 Nb5 17. Qb2 a6 18. f3 Qd8 19. Bg3 Bd6 20. Be1 Qe7 21. Ra2 g5 22. Bd2 Kh8 23. Bc1 Rg8 24. Qa1 Qg7 25. Rb4 g4 26. hxg4 fxg4 27. f4 Bxb4 28. axb4 Nd6 29. Rxa4 Ne4 30. b5 Raf8 31. Bxg4 h5 32. Ba3 Rf5 33. Bf3 axb5 34. Ra7 Qg3 35. Qf1 Rxe5 36. dxe5 Nd2 37. Qf2 Nxf3+ 38. Kf1 Nh2+ 39. Kg1 Nf3+ 40. Kf1 Nh2+ 41. Kg1 1/2-1/2

[Event "Baden-Baden Swiss 1st"]
[Site "Baden-Baden"]
[Date "2021.09.13"]
[Round "8"]
[White "Mattenberger, Matthias"]
[Black "Koellner, Christof"]
[Result "0-1"]
[ECO "A21"]
[WhiteElo "2003"]
[BlackElo "2156"]
[PlyCount "180"]
[EventDate "2021.09.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]

1. d4 d6 2. c4 e5 3. Nc3 exd4 4. Qxd4 Nc6 5. Qd2 g6 6. b3 Bh6 7. e3 Nf6 8. Bb2 0-0 9. Nge2 Re8 10. Ng3 Bg7 11. Be2 a5 12. 0-0 h5 13. Bd3 Ne5 14. f4 Nxd3 15. Qxd3 Ng4 16. e4 c6 17. h3 Qb6+ 18. Kh1 Nf2+ 19. Rxf2 Qxf2 20. Ba3 Qd4 21. Qxd4 Bxd4 22. Nge2 Rxe4 23. Nxe4 Bxa1 24. Nxd6 b6 25. Ng3 Be6 26. Nge4 Bg7 27. Bc1 Rd8 28. Ba3 c5 29. Nb5 Bh6 30. g3 Bxh3 31. Nf6+ Kf8 32. Nd5 h4 33. gxh4 Bf5 34. Kg1 Re8 35. Kf2 Bb1 36. Nxb6 Bxa2 37. Nd7+ Ke7 38. Nxc5 Kf6 39. Nd7+ Ke6 40. Nc5+ Kf6 41. Nd7+ Kf5 42. Nd6+ Ke6 43. Nxe8 Kxd7 44. Nf6+ Ke6 45. Ne4 Bxf4 46. Kf3 Be5 47. Bc1 Kf5 48. Bd2 Bc7 49. Nc5 Bb1 50. Be1 Bb6 51. Na4 Be4+ 52. Kg3 Bc7+ 53. Kh3 Bc2 54. Nc5 Bd1 55. Bd2 Bb6 56. Na4 Bg4+ 57. Kg2 Bd8 58. Kg3 Bc7+ 59. Kg2 Bd1 60. Nc5 Kg4 61. Be1 Bb6 62. Nd7 Bf3+ 63. Kh2 Bc7+ 64. Kg1 Bd1 65. Nf6+ Kh3 66. h5 gxh5 67. c5 Bxb3 68. Nxh5 a4 69. Bc3 a3 70. Nf6 Bd8 71. Ne8 Ba4 72. Nd6 f6 73. Kf2 Kg4 74. Ke2 f5 75. Bd4 f4 76. Kd3 Bb3 77. Kc3 Bd5 78. Nb5 a2 79. Kb2 f3 80. Nc3 Bf6 81. Bxf6 f2 82. Nxd5 a1Q+ 83. Kxa1 f1Q+ 84. Kb2 Qg2+ 85. Kc3 Qxd5 86. Be7 Kf5 87. Bd6 Ke4 88. Kb4 Qb7+ 89. Kc4 Qa6+ 90. Kc3 Kd5 0-1

[Event "Baden-Baden Swiss 1st"]
[Site "Baden-Baden"]
[Date "2021.09.13"]
[Round "7"]
[White "Von Mettenheim, Johannes"]
[Black "Koellner, Christof"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "2031"]
[BlackElo "2156"]
[PlyCount "65"]
[EventDate "2021.09.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]

1. d4 d6 2. e4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. g4 d5 6. exd5 e4 7. Nd2 Bb4 8. Bg2 0-0 9. 0-0 Bxc3 10. bxc3 Nb6 11. Nxe4 Nxe4 12. Bxe4 Nxd5 13. Qd3 Bxg4 14. Bxh7+ Kh8 15. Be4 f5 16. Bg2 f4 17. Qg6 Bf5 18. Qh5+ Kg8 19. c4 Nc3 20. Bb2 g6 21. Qf3 Ne4 22. Qxf4 Nf6 23. Rae1 Qd7 24. d5 Rae8 25. Rxe8 Nxe8 26. Qh4 Ng7 27. Re1 Re8 28. Re5 Rxe5 29. Bxe5 Bxc2 30. Qf6 Bf5 31. c5 Kh7 32. h3 Kg8 33. Kh2 1-0

[Event "Baden-Baden Swiss 1st"]
[Site "Baden-Baden"]
[Date "2021.09.12"]
[Round "6"]
[White "Koellner, Christof"]
[Black "Papadiamandis, Elliot"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "2156"]
[BlackElo "2404"]
[PlyCount "104"]
[EventDate "2021.09.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Nbd2 d5 4. e3 Bg7 5. b4 0-0 6. Bb2 a5 7. b5 a4 8. Ba3 Nbd7 9. Be2 Re8 10. c4 e5 11. Nxe5 Nxe5 12. dxe5 Rxe5 13. 0-0 dxc4 14. Bxc4 Be6 15. Rb1 Ne4 16. Rb2 Bxc4 17. Nxc4 Rd5 18. Qc2 Bxb2 19. Bxb2 Nd2 20. Qc3 f6 21. Nxd2 Rxd2 22. g4 Rd1 23. h3 Rxf1+ 24. Kxf1 Qd1+ 25. Kg2 Qd5+ 26. Kg1 Rf8 27. Qxc7 Qxa2 28. Qc3 Qb3 29. Qd4 a3 30. Ba1 Qxb5 31. h4 Qc6 32. g5 Re8 33. gxf6 Kf7 34. f3 Re6 35. Kf2 Qd6 36. Qc3 b5 37. f4 b4 38. Qc2 Qc6 39. Qb3 Qh1 40. Bd4 Qxh4+ 41. Kg2 Qg4+ 42. Kf2 Qh4+ 43. Kg2 Qh5 44. Qc4 Qa5 45. e4 b3 46. Bc3 Qb6 47. f5 gxf5 48. Qd5 Qc6 49. Qxb3 Qxe4+ 50. Kh2 Kg6 51. Qxa3 Qh4+ 52. Kg2 Re2+ 0-1

[Event "Baden-Baden Swiss 1st"]
[Site "Baden-Baden"]
[Date "2021.09.11"]
[Round "5"]
[White "Koellner, Christof"]
[Black "Hagner, Bennet"]
[Result "1/2-1/2"]
[ECO "D10"]
[WhiteElo "2156"]
[BlackElo "2034"]
[PlyCount "88"]
[EventDate "2021.09.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Nc3 Nf6 5. f3 Nc6 6. e4 e6 7. e5 Ng8 8. f4 Nge7 9. Nf3 Nf5 10. g4 Nh4 11. Be3 Be7 12. Bf2 h5 13. gxh5 Nf5 14. Bd3 Rxh5 15. Ng5 g6 16. Bxf5 exf5 17. Qb3 Bxg5 18. fxg5 Ne7 19. h4 a6 20. 0-0-0 b5 21. Kb1 Be6 22. Rc1 Rc8 23. Ne2 Rc4 24. Nf4 Rh8 25. Qd3 Kd7 26. b3 Qb6 27. Qe3 Rc6 28. Rc5 a5 29. Rhc1 b4 30. Qe2 a4 31. Rb5 Rxc1+ 32. Kxc1 Qc6+ 33. Rc5 Qb7 34. Qb5+ Qxb5 35. Rxb5 Rc8+ 36. Kd2 axb3 37. axb3 Kc6 38. Rxb4 Ra8 39. Nd3 Nc8 40. Nc5 Ra2+ 41. Ke1 Nb6 42. Na4 Nxa4 43. Rxa4 Rxa4 44. bxa4 Kb6 1/2-1/2

[Event "Baden-Baden Swiss 1st"]
[Site "Baden-Baden"]
[Date "2021.09.11"]
[Round "4"]
[White "Parvanyan, Ashot"]
[Black "Koellner, Christof"]
[Result "1-0"]
[ECO "E11"]
[WhiteElo "2460"]
[BlackElo "2156"]
[PlyCount "71"]
[EventDate "2021.09.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. g3 Bb4+ 5. Bd2 Be7 6. Bg2 0-0 7. 0-0 c6 8. Na3 Nbd7 9. Rc1 Ne4 10. Qb3 f5 11. Rfd1 Qe8 12. Bb4 Bxb4 13. Qxb4 Qh5 14. e3 Ng5 15. Nxg5 Qxg5 16. Nc2 Qf6 17. Ne1 Kh8 18. Nd3 g5 19. Rc2 Rg8 20. Rdc1 Qf8 21. Qa5 Qd6 22. b4 b6 23. Qa3 Bb7 24. Qb2 Rac8 25. b5 cxb5 26. c5 Qe7 27. c6 Bxc6 28. Rxc6 Rxc6 29. Rxc6 Nb8 30. Rc1 a6 31. Ne5 Qb7 32. Qc3 Nd7 33. Nf7+ Kg7 34. Nd6 Qa7 35. Qc7 Ra8 36. Nb7 1-0

[Event "Baden-Baden Swiss 1st"]
[Site "Baden-Baden"]
[Date "2021.09.10"]
[Round "2"]
[White "Gut, Lionel"]
[Black "Koellner, Christof"]
[Result "0-1"]
[ECO "A21"]
[WhiteElo "1866"]
[BlackElo "2156"]
[PlyCount "110"]
[EventDate "2021.09.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]

1. d4 d6 2. c4 e5 3. Nc3 exd4 4. Qxd4 Nc6 5. Qd2 g6 6. b3 Bg7 7. Bb2 Nf6 8. g3 0-0 9. Bg2 Re8 10. Nh3 Bf5 11. 0-0 Ne4 12. Nxe4 Bxe4 13. Bxg7 Kxg7 14. Nf4 Bxg2 15. Kxg2 Re7 16. Nd5 Rd7 17. Rad1 Qe8 18. Qc3+ Qe5 19. Qf3 Re8 20. e3 f5 21. Qf4 Qe4+ 22. Qxe4 Rxe4 23. h4 a5 24. a3 Re8 25. b4 b6 26. b5 Nd8 27. h5 g5 28. g4 Rf8 29. gxf5 Rxf5 30. Rd4 Ne6 31. Rg4 Kh6 32. e4 Rf8 33. Rh1 Rdf7 34. Rf1 Kxh5 35. f3 Kg6 36. Rf2 Nf4+ 37. Nxf4+ Rxf4 38. Rxf4 Rxf4 39. Re2 g4 40. fxg4 Rxg4+ 41. Kf3 Rg5 42. Kf4 Kf6 43. Rh2 h5 44. Rd2 Rg4+ 45. Kf3 Rg1 46. Kf2 Rc1 47. Rd4 Ke5 48. Rd5+ Kxe4 49. Rxh5 Rxc4 50. Ke2 Rc2+ 51. Kd1 Rc5 52. Rh7 Kd3 53. a4 Kc3 54. Rh4 Kb3 55. Kd2 Rc4 0-1

[Event "Baden-Baden Swiss 1st"]
[Site "Baden-Baden"]
[Date "2021.09.10"]
[Round "3"]
[White "Koellner, Christof"]
[Black "Hommer, Jeremy"]
[Result "1-0"]
[ECO "D05"]
[WhiteElo "2156"]
[BlackElo "2278"]
[PlyCount "85"]
[EventDate "2021.09.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]

1. d4 e6 2. Nf3 Nf6 3. e3 d5 4. Bd3 c5 5. c3 Nc6 6. Nbd2 Bd6 7. 0-0 0-0 8. dxc5 Bxc5 9. b4 Bd6 10. Bb2 e5 11. e4 Bg4 12. h3 Bh5 13. exd5 Nxd5 14. Qc2 Bg6 15. Bxg6 hxg6 16. Ne4 f5 17. Qb3 fxe4 18. Qxd5+ Kh7 19. Qxe4 Rf4 20. Qd5 Qf6 21. Bc1 Rd8 22. Bxf4 Qxf4 23. Qd2 Qf5 24. Qe3 Bc7 25. Rad1 Bb6 26. Ng5+ Kh6 27. Nf7+ Kh7 28. Qf3 Qxf3 29. Ng5+ Kh6 30. Nxf3 Re8 31. Rd7 e4 32. Nh2 Ne5 33. Rxb7 Kg5 34. a4 Nd3 35. a5 Bxf2+ 36. Rxf2 e3 37. Re2 Nc1 38. Re1 Nd3 39. Nf3+ Kf4 40. Rf7+ Kg3 41. Rxg7 Nf4 42. Nd4 e2 43. Nxe2+ 1-0

[Event "Baden-Baden Swiss 1st"]
[Site "Baden-Baden"]
[Date "2021.09.09"]
[Round "1"]
[White "Koellner, Christof"]
[Black "Koellner, Ruben Gideon"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2156"]
[BlackElo "2441"]
[PlyCount "64"]
[EventDate "2021.09.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. e5 d5 7. Bb5 Ne4 8. cxd4 Bb6 9. Be3 0-0 10. Nc3 Bg4 11. h3 Bh5 12. Qc2 Bg6 13. Qb3 Na5 14. Qa4 c6 15. Be2 Nxc3 16. bxc3 Bc7 17. 0-0 b5 18. Qa3 Nc4 19. Bxc4 bxc4 20. Bg5 f6 21. exf6 gxf6 22. Bh6 Re8 23. Rfe1 Qd6 24. Qxd6 Bxd6 25. Nh4 Bd3 26. g3 Ba3 27. Bd2 Bb2 28. Rab1 Bxb1 29. Rxb1 Rab8 30. Bf4 Rb5 31. Nf5 Bxc3 32. Rc1 Re1+ 0-1

[Event "Aarhus Chess House Summer"]
[Site "Aarhus"]
[Date "2021.08.01"]
[Round "9"]
[White "Koellner, Christof"]
[Black "Parra Becerra, Edgar Andre"]
[Result "1/2-1/2"]
[ECO "D01"]
[WhiteElo "2149"]
[BlackElo "2150"]
[PlyCount "141"]
[EventDate "2021.07.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "DEN"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 d5 3. e3 c5 4. Bxf6 gxf6 5. Nc3 Nc6 6. Qh5 e6 7. Nf3 Bd7 8. Bb5 cxd4 9. exd4 a6 10. Bxc6 Bxc6 11. 0-0 Qc7 12. Rfe1 0-0-0 13. Ne2 Kb8 14. Qh4 Be7 15. Qf4 h5 16. Qxc7+ Kxc7 17. Nf4 b6 18. c3 Bd6 19. Nd3 h4 20. Re3 Rdg8 21. Nfe1 Rh5 22. Rf3 Rh6 23. Rh3 e5 24. Re3 e4 25. Nb4 Bb7 26. Re2 f5 27. h3 Rhg6 28. Nbc2 f4 29. f3 Rg3 30. Kh2 a5 31. Rd1 Ba6 32. Red2 e3 33. Rd3 Bxd3 34. Rxd3 b5 35. a3 Kd7 36. Rd1 Be7 37. Rc1 Rc8 38. Nd3 f6 39. Kg1 Rcg8 40. Nce1 Rxh3 41. Nxf4 Rhg3 42. Nxd5 h3 43. Nxe3 hxg2 44. N3xg2 Bd6 45. Kf1 Rh3 46. Rc2 Re8 47. f4 Bxf4 48. Nxf4 Rh1+ 49. Kf2 Rexe1 50. Kf3 Rhf1+ 51. Rf2 Rxf2+ 52. Kxf2 Rb1 53. Nd3 Kd6 54. Ke3 Kd5 55. Nf4+ Kd6 56. Nd3 a4 57. Kd2 Kd5 58. Kc2 Rh1 59. Nb4+ Kc4 60. d5 f5 61. d6 Rh2+ 62. Kc1 Rh7 63. Nc6 Kc5 64. Ne7 Kxd6 65. Nxf5+ Kc5 66. Nd4 Rh1+ 67. Kc2 Kc4 68. Kd2 Rh2+ 69. Kc1 Rh1+ 70. Kd2 Rh2+ 71. Kc1 1/2-1/2

[Event "Aarhus Chess House Summer"]
[Site "Aarhus"]
[Date "2021.07.31"]
[Round "7"]
[White "Koellner, Christof"]
[Black "Pedersen, Peer Ole"]
[Result "1-0"]
[ECO "A47"]
[WhiteElo "2149"]
[BlackElo "2081"]
[PlyCount "109"]
[EventDate "2021.07.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "DEN"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. d4 e6 2. Nf3 Nf6 3. e3 b6 4. Nbd2 Be7 5. Bd3 Ba6 6. c4 c5 7. 0-0 d6 8. Qe2 Nc6 9. b3 0-0 10. Bb2 Qc7 11. Rac1 Rfe8 12. Rfd1 Rad8 13. e4 e5 14. d5 Nb8 15. Nf1 Bc8 16. Ng3 g6 17. h3 Bf8 18. Bb1 Qe7 19. Rc3 h6 20. Bc1 Nh7 21. Nh2 Bg7 22. Be3 Nf6 23. a3 Kh7 24. b4 Nbd7 25. Rb3 Ng8 26. Bd3 Ndf6 27. Rdb1 Nd7 28. Qc2 h5 29. Nf3 Bh6 30. Qd2 Bxe3 31. Qxe3 Nh6 32. Ng5+ Kg7 33. Be2 h4 34. Nf1 Rh8 35. Nh2 Nf8 36. bxc5 bxc5 37. Ngf3 Nh7 38. Qd2 Rd7 39. Qa5 Nf6 40. Bd3 Nh5 41. Rb8 Nf4 42. Bc2 g5 43. Ra8 Rc7 44. Rbb8 Rb7 45. Rxc8 Rxc8 46. Rxc8 Rb2 47. Ne1 Rxc2 48. Nxc2 Qb7 49. Rc6 Qb1+ 50. Ne1 Qxe4 51. Qd2 Nf5 52. Nhf3 f6 53. Rc7+ Kh6 54. Qc2 Ne2+ 55. Kh1 1-0

[Event "Aarhus Chess House Summer"]
[Site "Aarhus"]
[Date "2021.07.31"]
[Round "8"]
[White "Rewitz, Poul"]
[Black "Koellner, Christof"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "2289"]
[BlackElo "2149"]
[PlyCount "52"]
[EventDate "2021.07.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "DEN"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. dxe5 dxe5 5. Qxd8+ Kxd8 6. Bg5 c6 7. 0-0-0+ Ke8 8. f4 Be7 9. Nf3 Ng4 10. Rd2 f6 11. Bh4 exf4 12. Bc4 g5 13. Be1 Ne5 14. Bb3 Nxf3 15. gxf3 Nd7 16. e5 Nxe5 17. Ne4 Nxf3 18. Nd6+ Kd7 19. Rd1 Kc7 20. Bb4 Bh3 21. Rd3 Ne5 22. Nb5+ cxb5 23. Rc3+ Kd8 24. Rd1+ Bd7 25. Ba5+ b6 26. Be6 bxa5 0-1

[Event "Aarhus Chess House Summer"]
[Site "Aarhus"]
[Date "2021.07.30"]
[Round "6"]
[White "Easwaralingam, Adesh"]
[Black "Koellner, Christof"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "2141"]
[BlackElo "2149"]
[PlyCount "109"]
[EventDate "2021.07.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "DEN"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. a4 0-0 7. 0-0 exd4 8. Nxd4 Re8 9. h3 Ne5 10. Ba2 Bf8 11. Bg5 c6 12. a5 h6 13. Bxf6 Qxf6 14. f4 Ng6 15. e5 Qh4 16. Qd3 d5 17. Nf5 Bxf5 18. Qxf5 Bc5+ 19. Kh2 Nf8 20. Ne4 Qe7 21. Ng3 Qe6 22. Qd3 Qg6 23. Qc3 Nd7 24. Rae1 Bf8 25. Qd2 h5 26. c4 h4 27. Ne2 Rad8 28. Bb1 Qh6 29. cxd5 Nxe5 30. Qc2 Nd7 31. dxc6 bxc6 32. Rd1 Nc5 33. Nd4 g6 34. Nxc6 Rc8 35. Ne5 Ne6 36. Qb3 Bg7 37. Rd7 Bxe5 38. fxe5 Rf8 39. Rdxf7 Rxf7 40. Qxe6 Rcf8 41. Bxg6 Kh8 42. Rxf7 Rxf7 43. Qxf7 a6 44. Qf6+ Kg8 45. Bf7+ Kh7 46. Qxh6+ Kxh6 47. e6 Kg7 48. g3 Kh6 49. e7 Kg7 50. e8Q hxg3+ 51. Kg1 g2 52. Bc4 Kh6 53. Qg8 Kh5 54. Bd3 Kh4 55. Qg4# 1-0

[Event "Aarhus Chess House Summer"]
[Site "Aarhus"]
[Date "2021.07.29"]
[Round "5"]
[White "Koellner, Christof"]
[Black "Olsson, William"]
[Result "1/2-1/2"]
[ECO "D45"]
[WhiteElo "2149"]
[BlackElo "2221"]
[PlyCount "167"]
[EventDate "2021.07.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "DEN"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. e3 Nf6 5. Nf3 Nbd7 6. b3 Bb4 7. Bd2 0-0 8. a3 Bd6 9. Qc2 Qe7 10. Be2 b6 11. e4 dxe4 12. Nxe4 Nxe4 13. Qxe4 Bb7 14. Bc3 f5 15. Qc2 c5 16. 0-0 Be4 17. Qd2 Rad8 18. b4 cxd4 19. Qxd4 Nf6 20. Qe3 Ng4 21. Qg5 Qf7 22. h3 Nf6 23. Bxf6 Qxf6 24. Qxf6 gxf6 25. Rfd1 Kf7 26. Ne1 Ke7 27. Kf1 Rc8 28. Ra2 Rc7 29. Nc2 a5 30. bxa5 bxa5 31. Nd4 Bc5 32. Nb5 Rb7 33. Rad2 Bc6 34. Rd3 Rg8 35. Bf3 Bxf3 36. Rxf3 Rd7 37. Rxd7+ Kxd7 38. Rf4 Rg7 39. g3 Rg5 40. Rh4 Rg7 41. Rf4 Rg6 42. Rh4 h6 43. Rf4 Ke7 44. Ke2 Kf7 45. Rf3 Rg8 46. Rd3 Ke7 47. Rf3 Rd8 48. Rf4 Kf7 49. g4 fxg4 50. Rxg4 f5 51. Rg3 Kf6 52. Rb3 Rg8 53. Rg3 Rg5 54. h4 Rg6 55. Kf3 e5 56. Rxg6+ Kxg6 57. Kg3 Kf6 58. f3 h5 59. a4 f4+ 60. Kg2 Bb4 61. Kf2 Kf5 62. Nc7 Be7 63. Na6 Bxh4+ 64. Kg2 Be7 65. Nc7 Bd8 66. Nb5 Bh4 67. Nc3 e4 68. fxe4+ Ke5 69. Kf3 Kd4 70. Nd5 Kxc4 71. Kxf4 Kb3 72. e5 Kxa4 73. e6 Kb5 74. e7 Bxe7 75. Nxe7 a4 76. Nd5 a3 77. Nc3+ Kc4 78. Na2 Kb3 79. Nc1+ Kb2 80. Nd3+ Kc3 81. Nc1 h4 82. Kg4 h3 83. Kxh3 a2 84. Nxa2+ 1/2-1/2

[Event "Aarhus Chess House Summer"]
[Site "Aarhus"]
[Date "2021.07.28"]
[Round "4"]
[White "Christensen, Jan"]
[Black "Koellner, Christof"]
[Result "1/2-1/2"]
[ECO "C41"]
[WhiteElo "2171"]
[BlackElo "2149"]
[PlyCount "67"]
[EventDate "2021.07.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "DEN"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. d4 d6 2. e4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. a4 exd4 7. Nxd4 0-0 8. 0-0 Ne5 9. Ba2 Nc6 10. h3 Nb4 11. Bb1 c5 12. Nf3 Be6 13. Re1 h6 14. Bf4 a6 15. Bh2 Re8 16. Na2 Nc6 17. Nc3 Qb6 18. Nd5 Bxd5 19. exd5 Nb4 20. c3 Nbxd5 21. Ba2 Qc6 22. Qd3 Nc7 23. Bf4 Rad8 24. Bxh6 c4 25. Bxc4 d5 26. Ba2 gxh6 27. Ne5 Qb6 28. Qg3+ Kf8 29. Qf4 Bc5 30. Qxh6+ Kg8 31. Qg5+ Kf8 32. Qh6+ Kg8 33. Qg5+ Kf8 34. Qh6+ 1/2-1/2

[Event "Aarhus Chess House Summer"]
[Site "Aarhus"]
[Date "2021.07.28"]
[Round "3"]
[White "Koellner, Christof"]
[Black "Ramsdal, Jens Albert"]
[Result "0-1"]
[ECO "A47"]
[WhiteElo "2149"]
[BlackElo "2282"]
[PlyCount "104"]
[EventDate "2021.07.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "DEN"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. d4 e6 2. Nf3 Nf6 3. Bf4 b6 4. e3 Bb7 5. Nbd2 Be7 6. Bd3 Nh5 7. 0-0 d6 8. h3 Nxf4 9. exf4 0-0 10. Qe2 g6 11. Rfe1 Bf6 12. Be4 d5 13. Bd3 c5 14. c3 Nc6 15. Qe3 cxd4 16. cxd4 Nb4 17. a3 Nxd3 18. Qxd3 Qc7 19. Ne5 Rfc8 20. Rac1 Qxc1 21. Rxc1 Rxc1+ 22. Kh2 Rac8 23. Ng4 Bg7 24. Ne3 R1c7 25. Nf3 Bc6 26. Nd1 Ba4 27. Nc3 Bb3 28. Qe3 Bc4 29. Ne5 a6 30. Na4 Bb5 31. Nc3 Be8 32. Nd3 Rxc3 33. bxc3 Rxc3 34. Qd2 Rxa3 35. Ne5 Ra4 36. Nf3 Rc4 37. g4 Bd7 38. Ne5 Bxe5 39. fxe5 Rc8 40. h4 a5 41. h5 Be8 42. Kg3 a4 43. Kh4 a3 44. Kg5 Kg7 45. hxg6 h6+ 46. Kh4 Ra8 47. Qf4 a2 48. Qf6+ Kg8 49. gxf7+ Bxf7 50. Qxh6 a1Q 51. Kg5 Qb1 52. Kf6 Qg6+ 0-1

[Event "Aarhus Chess House Summer"]
[Site "Aarhus"]
[Date "2021.07.27"]
[Round "2"]
[White "Fries Nielsen, Jens Ove"]
[Black "Koellner, Christof"]
[Result "1-0"]
[ECO "A41"]
[WhiteElo "2359"]
[BlackElo "2149"]
[PlyCount "93"]
[EventDate "2021.07.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "DEN"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. d4 d6 2. Nc3 Nf6 3. h3 h6 4. g4 c6 5. e4 e5 6. Bg2 Be7 7. Nge2 Nbd7 8. Be3 b5 9. d5 Bb7 10. dxc6 Bxc6 11. Ng3 g6 12. Qd2 h5 13. g5 Nh7 14. h4 Nb6 15. b3 0-0 16. 0-0-0 b4 17. Nd5 Nxd5 18. exd5 Bd7 19. Be4 Qa5 20. Kb1 Rfb8 21. Rhg1 Rb6 22. Ne2 Ra6 23. Nc1 Bb5 24. Qe1 Rb8 25. f3 Nf8 26. Bd2 Be8 27. f4 Nd7 28. Bd3 Rab6 29. Rf1 Qxd5 30. Be3 Qa5 31. Bxb6 Nxb6 32. Be4 d5 33. Bg2 e4 34. f5 Bd7 35. fxg6 fxg6 36. Bxe4 dxe4 37. Qxe4 Bf5 38. Qxe7 Nd5 39. Rxf5 Nc3+ 40. Ka1 Qxf5 41. Rd7 Qxd7 42. Qxd7 Rf8 43. Qxa7 Rf1 44. Qb8+ Kf7 45. Qxb4 Rxc1+ 46. Kb2 Nd5 47. Qb7+ 1-0

[Event "Aarhus Chess House Summer"]
[Site "Aarhus"]
[Date "2021.07.26"]
[Round "1"]
[White "Koellner, Christof"]
[Black "Bank, Pelle Rodkjaer"]
[Result "1-0"]
[ECO "A48"]
[WhiteElo "2149"]
[BlackElo "2320"]
[PlyCount "81"]
[EventDate "2021.07.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "DEN"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. d4 g6 2. Nf3 Bg7 3. Nbd2 Nf6 4. e4 0-0 5. c3 c5 6. dxc5 Qc7 7. Bd3 Na6 8. Nb3 Nxc5 9. Nxc5 Qxc5 10. Be3 Qc7 11. Nd4 d5 12. exd5 Nxd5 13. Qf3 Nxe3 14. Qxe3 a6 15. Nb3 b6 16. 0-0 e5 17. Be4 Rb8 18. Rfd1 a5 19. Nd2 Be6 20. Bc2 b5 21. Bb3 Bxb3 22. axb3 f5 23. Nf3 b4 24. h4 h6 25. Rd5 bxc3 26. Qxc3 Qf7 27. Raxa5 e4 28. Ne5 Qe6 29. Qg3 Rb6 30. Nd7 f4 31. Qh3 e3 32. Nxb6 Qxb6 33. fxe3 fxe3 34. Rab5 e2+ 35. Rxb6 e1Q+ 36. Kh2 Kh7 37. Rd7 Qe5+ 38. Qg3 Qxb2 39. Qxg6+ Kh8 40. Rxg7 Qxg7 41. Qxh6+ 1-0

[Event "GER Cup Net Final-A U2400"]
[Site "Playchess.com INT"]
[Date "2020.06.06"]
[Round "1"]
[White "Baskin, Robert"]
[Black "Koellner, Christof"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "2208"]
[BlackElo "2052"]
[PlyCount "163"]
[EventDate "2020.06.06"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. a4 0-0 7. 0-0 exd4 8. Nxd4 Ne5 9. Ba2 Nc6 10. Nxc6 bxc6 11. h3 Rb8 12. Qf3 Nd7 13. Qg3 Bf6 14. f4 Re8 15. a5 Ba6 16. Rd1 Bxc3 17. Qxc3 c5 18. e5 dxe5 19. fxe5 Qe7 20. Bf4 Rb4 21. Qg3 Rxb2 22. Bd5 Rb4 23. e6 fxe6 24. Bc6 Rd8 25. Bxd7 Rxd7 26. Be5 g6 27. Kh2 Rxd1 28. Rxd1 Bc4 29. Bxc7 Bd5 30. Be5 Rb7 31. Qf4 Qf7 32. Qh6 Qf8 33. Qe3 c4 34. Rd2 Rf7 35. c3 Rf5 36. Rd4 Qf7 37. Rg4 Rf1 38. Bd4 Qf5 39. Rg5 Qf7 40. Qe5 Kf8 41. Qb8+ Ke7 42. Qxa7+ Kd6 43. Qb6+ Kd7 44. Qa7+ Kc6 45. Qc5+ Kd7 46. Qb5+ Kd6 47. Be5+ Ke7 48. Qc5+ Ke8 49. Qc8+ Ke7 50. a6 Ra1 51. Qc7+ Ke8 52. Qc8+ Ke7 53. Qc5+ Ke8 54. Qb5+ Qd7 55. Qb8+ Kf7 56. Qh8 Qe7 57. Qxh7+ Ke8 58. Qxg6+ Kd7 59. Qg7 Rxa6 60. Qxe7+ Kxe7 61. h4 Kf7 62. h5 Ra8 63. Rg7+ Kf8 64. h6 Be4 65. h7 Bxh7 66. Rxh7 Ra2 67. Bd4 Re2 68. Rc7 e5 69. Bg1 Re4 70. Kg3 Ke8 71. Kf3 Rf4+ 72. Ke3 Rg4 73. Kf3 Rf4+ 74. Kg3 Re4 75. Rc5 Ke7 76. Kf3 Rf4+ 77. Ke3 Kd6 78. Rxe5 Rg4 79. Kf3 Kxe5 80. Kxg4 Ke4 81. Bd4 Kd3 82. Kf5 1-0

[Event "GER Cup Net Final-A U2400"]
[Site "Playchess.com INT"]
[Date "2020.06.06"]
[Round "6"]
[White "Bennemann, Ingmar"]
[Black "Koellner, Christof"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1770"]
[BlackElo "2052"]
[PlyCount "60"]
[EventDate "2020.06.06"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. Nc3 Bf5 4. Bf4 c6 5. e3 g6 6. Ne5 Bg7 7. g4 Be6 8. Be2 h5 9. g5 Nfd7 10. Nxd7 Nxd7 11. f3 0-0 12. e4 Qb6 13. Be3 Qxb2 14. Na4 Qa3 15. c3 b5 16. Nc5 Nxc5 17. dxc5 Qxc3+ 18. Kf2 dxe4 19. Rc1 Qe5 20. f4 Qc7 21. Bxh5 Rfd8 22. Qe2 gxh5 23. Qxh5 Bf5 24. Rhg1 Rd5 25. Qe2 Rad8 26. Rc2 Bd4 27. Rg3 Qxf4+ 28. Kg2 Bxe3 29. Rxe3 Bg4 30. Qe1 Bf3+ 0-1

[Event "GER Cup Net Final-A U2400"]
[Site "Playchess.com INT"]
[Date "2020.06.06"]
[Round "9"]
[White "Brunke, Christian"]
[Black "Koellner, Christof"]
[Result "1/2-1/2"]
[ECO "B07"]
[WhiteElo "2104"]
[BlackElo "2052"]
[PlyCount "53"]
[EventDate "2020.06.06"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. dxe5 dxe5 5. Qxd8+ Kxd8 6. Bg5 c6 7. 0-0-0+ Ke8 8. f4 Be7 9. Nf3 Ng4 10. Bxe7 Kxe7 11. Rg1 exf4 12. Ne2 Be6 13. Nxf4 Nd7 14. h3 Nf2 15. Re1 Nf6 16. Nd2 Rhd8 17. e5 Nd5 18. Nxe6 fxe6 19. Bc4 b5 20. Bxd5 exd5 21. Re2 Rf8 22. Rf1 Ne4 23. Rxf8 Rxf8 24. Nxe4 dxe4 25. Kd2 Ke6 26. Rxe4 Rf2+ 27. Re2 1/2-1/2

[Event "GER Cup Net Final-A U2400"]
[Site "Playchess.com INT"]
[Date "2020.06.06"]
[Round "7"]
[White "Koellner, Christof"]
[Black "Becker, Marcel"]
[Result "1-0"]
[ECO "D04"]
[WhiteElo "2052"]
[BlackElo "2054"]
[PlyCount "47"]
[EventDate "2020.06.06"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. e3 c6 4. Nbd2 Bf5 5. h3 e6 6. g4 Bg6 7. Ne5 Nfd7 8. Nxg6 hxg6 9. Bg2 e5 10. 0-0 exd4 11. exd4 Bd6 12. Re1+ Kf8 13. Qf3 Na6 14. c4 Nc7 15. cxd5 Nxd5 16. Ne4 Bb4 17. Re2 Qc7 18. a3 Be7 19. Bd2 N7f6 20. Rae1 Nxe4 21. Qxe4 g5 22. Bxg5 Bxg5 23. Qe8+ Rxe8 24. Rxe8# 1-0

[Event "GER Cup Net Final-A U2400"]
[Site "Playchess.com INT"]
[Date "2020.06.06"]
[Round "3"]
[White "Koellner, Christof"]
[Black "Beesk, Kevin"]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "2052"]
[BlackElo "1957"]
[PlyCount "47"]
[EventDate "2020.06.06"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 e6 3. e4 h6 4. Bxf6 Qxf6 5. c3 d6 6. Nd2 e5 7. Ngf3 g6 8. Bd3 Bg7 9. 0-0 Nc6 10. d5 Nd8 11. c4 0-0 12. b4 Qe7 13. Nb3 f5 14. c5 Nf7 15. Rc1 Ng5 16. Nxg5 hxg5 17. Rc2 g4 18. Qc1 Rf7 19. cxd6 cxd6 20. Rxc8+ Rxc8 21. Qxc8+ Kh7 22. exf5 Rf8 23. fxg6+ Kh6 24. Qxg4 1-0

[Event "GER Cup Net Final-A U2400"]
[Site "Playchess.com INT"]
[Date "2020.06.06"]
[Round "2"]
[White "Koellner, Christof"]
[Black "Berger, Steve"]
[Result "0-1"]
[ECO "D05"]
[WhiteElo "2052"]
[BlackElo "2279"]
[PlyCount "36"]
[EventDate "2020.06.06"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. e3 c5 4. c3 e6 5. Nbd2 Nbd7 6. Bd3 b6 7. e4 cxd4 8. cxd4 dxe4 9. Nxe4 Bb7 10. Qe2 Bb4+ 11. Bd2 Bxd2+ 12. Nfxd2 0-0 13. 0-0 Nd5 14. Nf3 Nf4 15. Qe3 Nxd3 16. Qxd3 Nc5 17. Nxc5 bxc5 18. Ng5 Qxg5 0-1

[Event "GER Cup Net Final-A U2400"]
[Site "Playchess.com INT"]
[Date "2020.06.06"]
[Round "5"]
[White "Koellner, Christof"]
[Black "Braun, Georg"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "2052"]
[BlackElo "2120"]
[PlyCount "94"]
[EventDate "2020.06.06"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 d6 4. e3 g5 5. Bg3 Bg7 6. Bd3 Nxg3 7. hxg3 h6 8. Nd2 c5 9. c3 Nc6 10. Qh5 Be6 11. Ngf3 Qb6 12. Nxg5 hxg5 13. Qxh8+ Bxh8 14. Rxh8+ Kd7 15. Rxa8 cxd4 16. exd4 Bd5 17. Bf5+ e6 18. Bh3 f5 19. g4 f4 20. Rh8 e5 21. Rh7+ Ke8 22. b4 exd4 23. c4 Nxb4 24. Kf1 Bf7 25. Ne4 Bxc4+ 26. Kg1 Kf8 27. Nf6 Qc6 28. Nd7+ Ke8 29. Nf6+ Kd8 30. Rd7+ Qxd7 31. Nxd7 Kxd7 32. g3 fxg3 33. fxg3 Nc2 34. Rc1 d3 35. Bf1 Ne3 36. Rxc4 Nxc4 37. Bxd3 Ne5 38. Be2 Kc6 39. Kf2 Kd5 40. Ke3 b6 41. Kd2 Kd4 42. Kc2 Ke3 43. Bd1 Kf2 44. Kc3 Kxg3 45. Kd4 Nxg4 46. Kd5 Ne3+ 47. Kxd6 Nxd1 0-1

[Event "GER Cup Net Final-A U2400"]
[Site "Playchess.com INT"]
[Date "2020.06.06"]
[Round "8"]
[White "Koellner, Christof"]
[Black "Loehr, Markus"]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "2052"]
[BlackElo "2078"]
[PlyCount "103"]
[EventDate "2020.06.06"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 e6 3. e4 h6 4. Bxf6 Qxf6 5. c3 d5 6. Nd2 c5 7. Ngf3 Nc6 8. Qe2 Be7 9. dxc5 0-0 10. Qe3 Bd7 11. Be2 Rac8 12. 0-0 Rfe8 13. b4 Ne5 14. Nxe5 Qxe5 15. a4 Bf6 16. Ra2 d4 17. cxd4 Qxd4 18. Qxd4 Bxd4 19. Nc4 Red8 20. Nd6 Rb8 21. a5 b6 22. cxb6 axb6 23. a6 Bc6 24. Nb5 Bxe4 25. a7 Rbc8 26. Bf3 Ba8 27. Bxa8 Rxa8 28. Nc7 b5 29. Nxa8 Rxa8 30. g3 Kf8 31. Kg2 Ke7 32. Rc1 Kd7 33. Rd1 e5 34. f4 f6 35. fxe5 fxe5 36. Kf3 Ke6 37. Ke4 g6 38. Ra6+ Kf7 39. Rf1+ Kg7 40. Rff6 Rxa7 41. Rxg6+ Kf7 42. Rxa7+ Bxa7 43. Rxh6 Bd4 44. g4 Kg7 45. Re6 Bc3 46. Rxe5 Bxb4 47. Rxb5 Be7 48. Rb6 Bh4 49. Kf5 Kf7 50. g5 Kg7 51. g6 Kh6 52. Rb7 1-0

[Event "GER Cup Net Final-A U2400"]
[Site "Playchess.com INT"]
[Date "2020.06.06"]
[Round "13"]
[White "Koellner, Christof"]
[Black "Thiede, Lars"]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "2052"]
[BlackElo "2139"]
[PlyCount "111"]
[EventDate "2020.06.06"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 e6 3. e4 h6 4. Bxf6 Qxf6 5. c3 d6 6. Nd2 Nc6 7. Bd3 e5 8. d5 Ne7 9. Ne2 Bd7 10. 0-0 Ng6 11. Qb3 b6 12. Bb5 Qd8 13. f4 exf4 14. Nxf4 Nxf4 15. Rxf4 Be7 16. Raf1 0-0 17. Bxd7 Qxd7 18. Nf3 Bf6 19. Nd4 Be5 20. R4f2 g6 21. Nc6 Bg7 22. Qc4 a5 23. a4 Rae8 24. h3 f6 25. Qd3 Kh7 26. b3 Rf7 27. Nd4 Re5 28. Rf4 Qe8 29. Nc6 Rg5 30. h4 Rh5 31. Nd4 Qe5 32. Qf3 Qe8 33. Ne6 Qe7 34. Nd4 Qe8 35. Ne6 Qe7 36. Nd4 Rf8 37. Nf5 Qd8 38. g4 g5 39. gxh5 gxf4 40. Qxf4 Qe8 41. Qg4 Rg8 42. Qg6+ Qxg6+ 43. hxg6+ Kh8 44. h5 Re8 45. Re1 Kg8 46. c4 Bf8 47. Kg2 Bg7 48. Kf3 Re5 49. Kf4 Kf8 50. Rb1 Kg8 51. b4 axb4 52. Rxb4 Re8 53. a5 bxa5 54. Rb7 Ra8 55. Rxc7 a4 56. Rxg7+ 1-0

[Event "GER Cup Net Final-A U2400"]
[Site "Playchess.com INT"]
[Date "2020.06.06"]
[Round "10"]
[White "Koellner, Christof"]
[Black "Zimmermann, Rene"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2052"]
[BlackElo "2045"]
[PlyCount "85"]
[EventDate "2020.06.06"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 c6 3. e3 Bg4 4. Nbd2 e6 5. h3 Bh5 6. g4 Bg6 7. Ne5 Nd7 8. Nxg6 hxg6 9. Bg2 Ngf6 10. 0-0 Qc7 11. f4 Be7 12. c4 0-0-0 13. c5 Kb8 14. b4 Nh7 15. Rb1 g5 16. b5 cxb5 17. Rxb5 gxf4 18. exf4 Ka8 19. Nf3 Nhf6 20. Ng5 Rdf8 21. Qe2 Nb8 22. Be3 Nc6 23. Rfb1 Rb8 24. Bf2 Qxf4 25. Nxf7 Nxd4 26. Qb2 Nxb5 27. Nxh8 Nc7 28. Ng6 Qg5 29. Nxe7 Nxg4 30. Nc6 Nxf2 31. Nxb8 Nxh3+ 32. Kh1 Nf2+ 33. Qxf2 Qh5+ 34. Kg1 Qe8 35. c6 bxc6 36. Qb2 Qc8 37. Nxc6 Na6 38. Na5 Qc5+ 39. Kh1 Qc7 40. Qb7+ Qxb7 41. Rxb7 Nb8 42. Rxg7 a6 43. Re7 1-0

[Event "GER Cup Net Final-A U2400"]
[Site "Playchess.com INT"]
[Date "2020.06.06"]
[Round "12"]
[White "Plischki, Sebastian"]
[Black "Koellner, Christof"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2152"]
[BlackElo "2052"]
[PlyCount "103"]
[EventDate "2020.06.06"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. d4 d6 2. e4 Nf6 3. Nc3 e5 4. dxe5 dxe5 5. Qxd8+ Kxd8 6. Bc4 Be6 7. Bxe6 fxe6 8. f3 Bd6 9. Be3 Ke7 10. Nb1 Nbd7 11. Nd2 a6 12. Nh3 h6 13. Nf2 b5 14. c4 Bc5 15. Ke2 Bxe3 16. Kxe3 c5 17. Nd3 g5 18. Rhc1 b4 19. Nb3 Rhc8 20. a3 bxa3 21. Rxa3 Rab8 22. Nd2 Rb6 23. b3 Nh5 24. g3 Nhf6 25. Rca1 Rcc6 26. h4 g4 27. f4 exf4+ 28. gxf4 Nh5 29. e5 Ng7 30. Ne4 Nf5+ 31. Kf2 Nd4 32. Rb1 Nc2 33. Ra2 Nd4 34. Rab2 Kf7 35. h5 a5 36. Kg3 Rb8 37. Kxg4 Rcb6 38. Ndxc5 Nxc5 39. Nxc5 Rg8+ 40. Kh3 Nf5 41. Rg2 Rgb8 42. Rbg1 a4 43. bxa4 Rb4 44. Rg6 Rxc4 45. Nxe6 Rc3+ 46. Kg4 Ne3+ 47. Kf3 Nf5+ 48. Ke4 Re3+ 49. Kxf5 Rb4 50. Rf6+ Ke7 51. Rg7+ Ke8 52. Rf8# 1-0

[Event "GER Cup Net Final-A U2400"]
[Site "Playchess.com INT"]
[Date "2020.06.06"]
[Round "11"]
[White "Richter, Nils"]
[Black "Koellner, Christof"]
[Result "0-1"]
[ECO "A27"]
[WhiteElo "2100"]
[BlackElo "2052"]
[PlyCount "58"]
[EventDate "2020.06.06"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 d6 4. g3 f5 5. d4 e4 6. Nh4 Be7 7. Ng2 Nf6 8. Bg5 0-0 9. e3 h6 10. Bxf6 Bxf6 11. Nf4 Bg5 12. h4 Bxf4 13. gxf4 Bd7 14. Be2 Kh8 15. Qd2 a6 16. 0-0-0 b5 17. Kb1 bxc4 18. Bxc4 a5 19. Rdg1 a4 20. Rg6 Ne7 21. Rg3 Rb8 22. Rhg1 d5 23. Nxd5 Nxd5 24. Bxd5 Bb5 25. Be6 Bd3+ 26. Ka1 Rb6 27. d5 a3 28. b3 Qf6+ 29. Qc3 Qxc3# 0-1

[Event "GER Cup Net Final-A U2400"]
[Site "Playchess.com INT"]
[Date "2020.06.06"]
[Round "4"]
[White "Vatter, Hans Joachim"]
[Black "Koellner, Christof"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2119"]
[BlackElo "2052"]
[PlyCount "137"]
[EventDate "2020.06.06"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. dxe5 dxe5 5. Qxd8+ Kxd8 6. Bc4 Be6 7. Bxe6 fxe6 8. f3 Bd6 9. Be3 Ke7 10. Nh3 Nbd7 11. Nf2 a6 12. a4 h6 13. Nd3 Rac8 14. Ke2 c5 15. Rhd1 c4 16. Nf2 Bb4 17. Bd2 Nb8 18. Nd5+ exd5 19. Bxb4+ Ke6 20. exd5+ Nxd5 21. Bd2 Nc6 22. c3 Na5 23. Ne4 Nb3 24. Rab1 Rhd8 25. Be3 b5 26. axb5 axb5 27. Nd2 b4 28. cxb4 Nxb4 29. Nxb3 cxb3 30. Rxd8 Rxd8 31. Ra1 Na2 32. Rd1 Rxd1 33. Kxd1 e4 34. Bd2 exf3 35. gxf3 Kd5 36. Ke2 Kd4 37. h4 h5 38. Ba5 g6 39. Bd2 Kd5 40. Kd3 Kc5 41. Ke4 Kc4 42. f4 Kc5 43. Ke5 Kc4 44. Kf6 Kd3 45. Ba5 Kc2 46. Kxg6 Kxb2 47. f5 Kc2 48. f6 b2 49. f7 b1Q 50. f8Q Qg1+ 51. Kxh5 Qd1+ 52. Kh6 Qc1+ 53. Kh7 Qb1 54. Qf5+ Kb2 55. Qxb1+ Kxb1 56. h5 Nc1 57. Kg8 Nd3 58. h6 Ne5 59. h7 Ng6 60. Kg7 Ne7 61. h8Q Nf5+ 62. Kf6 Nd4 63. Qh1+ Kc2 64. Qg2+ Kb1 65. Qg1+ Kc2 66. Qxd4 Kb1 67. Qf2 Ka1 68. Bc3+ Kb1 69. Qb2# 1-0

[Event "GER Cup Net V4 U2400"]
[Site "Playchess.com INT"]
[Date "2020.05.31"]
[Round "4"]
[White "De Reuter, Uwe"]
[Black "Koellner, Christof"]
[Result "0-1"]
[ECO "A41"]
[WhiteElo "1915"]
[BlackElo "1985"]
[PlyCount "26"]
[EventDate "2020.05.31"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. d4 d6 2. c4 e5 3. d5 f5 4. Nc3 Nf6 5. e4 fxe4 6. Nge2 Bf5 7. Ng3 Bg6 8. Ngxe4 Nxe4 9. Nxe4 Bxe4 10. Qh5+ Bg6 11. Qg4 Nd7 12. Bg5 Be7 13. Qe6 Bf7 0-1

[Event "GER Cup Net V4 U2400"]
[Site "Playchess.com INT"]
[Date "2020.05.31"]
[Round "5"]
[White "Heinig, Wolfram"]
[Black "Koellner, Christof"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "1966"]
[BlackElo "1985"]
[PlyCount "144"]
[EventDate "2020.05.31"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. d4 d6 2. Nf3 Nf6 3. Nc3 Nbd7 4. e4 e5 5. Bc4 Be7 6. 0-0 Nb6 7. Bb3 exd4 8. Nxd4 c5 9. Nf5 Bxf5 10. exf5 c4 11. Ba4+ Nxa4 12. Nxa4 d5 13. Re1 0-0 14. Be3 Qd7 15. Nc3 Qxf5 16. Bxa7 Ba3 17. Bd4 Bxb2 18. Rb1 Bxc3 19. Bxc3 Rxa2 20. Bxf6 Qxf6 21. Re2 d4 22. Rxb7 Qa6 23. Rb1 d3 24. cxd3 Rxe2 25. Qxe2 cxd3 26. Qd2 h6 27. h4 Re8 28. Rd1 Rd8 29. g3 Qc6 30. Qe3 d2 31. Kh2 Qc2 32. Qe2 Kh7 33. Kg1 Rd4 34. Kf1 Qc6 35. Kg1 Qd5 36. Kh2 g6 37. Kg1 h5 38. Kh2 Kg7 39. Kg1 Rd3 40. Kh2 Qd4 41. Kg2 Kf6 42. Kf1 Qd5 43. Kg1 Kf5 44. Qe7 Qe6 45. Qg5+ Ke4 46. Rxd2 Rxd2 47. Qxd2 Qe5 48. Qe3+ Kd5 49. Qf3+ Ke6 50. Qc6+ Kf5 51. Qd7+ Kf6 52. Qd8+ Qe7 53. Qd4+ Qe5 54. Qd8+ Qe7 55. Qh8+ Ke6 56. Qd4 Qd6 57. Qf4 Qxf4 58. gxf4 Kf5 59. Kg2 Kxf4 60. f3 f6 61. Kf2 g5 62. hxg5 fxg5 63. Kg2 Ke3 64. Kg3 Kd4 65. f4 g4 66. Kh4 Ke4 67. Kg5 g3 68. f5 g2 69. f6 g1Q+ 70. Kxh5 Qg8 71. Kh6 Qf7 72. Kg5 Ke5 0-1

[Event "GER Cup Net V4 U2400"]
[Site "Playchess.com INT"]
[Date "2020.05.31"]
[Round "6"]
[White "Koellner, Christof"]
[Black "Joeres, Stefan"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "1985"]
[BlackElo "2130"]
[PlyCount "130"]
[EventDate "2020.05.31"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 c5 3. Bxf6 gxf6 4. d5 Qb6 5. Qc1 d6 6. c4 Bg7 7. Nc3 0-0 8. Qc2 Nd7 9. e3 Ne5 10. Nf3 Bg4 11. Nxe5 fxe5 12. Bd3 h6 13. h3 Bd7 14. 0-0 f5 15. Rab1 f4 16. exf4 Rxf4 17. Ne4 Raf8 18. b3 Qd8 19. Qe2 Qe8 20. Ng3 Qf7 21. Nh5 Rh4 22. Ng3 Qf4 23. Rbe1 Qg5 24. Ne4 Qh5 25. Qxh5 Rxh5 26. Ng3 Rh4 27. Re4 Rxe4 28. Bxe4 Bf6 29. f3 Bh4 30. Ne2 Rb8 31. a4 a6 32. a5 Bg5 33. g3 Be3+ 34. Kg2 Kf7 35. Bd3 Rg8 36. f4 exf4 37. Nxf4 Ke8 38. Nh5 Bd2 39. Ra1 Bc3 40. Ra2 Be5 41. g4 Rf8 42. Be4 Kd8 43. Bf3 Be8 44. Ng3 Bg6 45. Ne4 Bxe4 46. Bxe4 Rf4 47. Bf3 Bc3 48. Ra4 Rd4 49. Kg3 Rd2 50. Kf4 Rb2 51. h4 Rxb3 52. g5 hxg5+ 53. hxg5 Bd2+ 54. Kg4 Rb1 55. Be4 Rg1+ 56. Kf5 Rxg5+ 57. Ke6 Re5+ 58. Kf7 Rxe4 59. Ra2 Bg5 60. Rg2 Bf6 61. Rg8+ Kc7 62. Ke8 Rxc4 63. Rf8 Ra4 64. Rf7 Rxa5 65. Rh7 Ra1 0-1

[Event "GER Cup Net V4 U2400"]
[Site "Playchess.com INT"]
[Date "2020.05.31"]
[Round "3"]
[White "Koellner, Christof"]
[Black "Pernutz, Hans Gerhard"]
[Result "1/2-1/2"]
[ECO "A45"]
[WhiteElo "1985"]
[BlackElo "1797"]
[PlyCount "93"]
[EventDate "2020.05.31"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 Nd5 3. e4 Nb6 4. Nf3 d5 5. Nc3 dxe4 6. Nxe4 c6 7. c3 Bf5 8. Bd3 Bg6 9. 0-0 h6 10. Bf4 N8d7 11. Ne5 Nxe5 12. Bxe5 e6 13. a4 Nd5 14. Re1 Bxe4 15. Bxe4 Nf6 16. Bf3 Be7 17. a5 a6 18. b4 0-0 19. Qc2 Nd5 20. Rab1 Qd7 21. h3 Rae8 22. Be4 f5 23. Bd3 Nf6 24. Bc4 Nd5 25. Rbd1 f4 26. Qg6 Bf6 27. Bxd5 exd5 28. Bxf6 Rxe1+ 29. Rxe1 Rxf6 30. Qe8+ Qxe8 31. Rxe8+ Rf8 32. Re7 Rf7 33. Re8+ Rf8 34. Re7 Rf7 35. Re8+ Kh7 36. f3 g5 37. Kf2 Kg7 38. Ke2 Kf6 39. Rh8 Re7+ 40. Kd2 Kg7 41. Rb8 Kf7 42. Kc2 Kg7 43. Kd3 Kf7 44. Kd2 Kg7 45. Kd3 Kf7 46. Kd2 Kg7 47. Kd3 1/2-1/2

[Event "GER Cup Net V4 U2400"]
[Site "Playchess.com INT"]
[Date "2020.05.31"]
[Round "2"]
[White "Koellner, Christof"]
[Black "Schulz, Karsten"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "1985"]
[BlackElo "2308"]
[PlyCount "122"]
[EventDate "2020.05.31"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. d4 g6 2. Nf3 Bg7 3. Nbd2 d6 4. e4 Nf6 5. Bc4 0-0 6. 0-0 Nc6 7. c3 e5 8. dxe5 Nxe5 9. Nxe5 dxe5 10. Qe2 c6 11. a4 Qe7 12. b4 Be6 13. Ba3 Rfd8 14. Rfd1 Rd7 15. b5 Qe8 16. a5 Bxc4 17. Qxc4 cxb5 18. Qxb5 a6 19. Qa4 Rad8 20. Qc2 Bf8 21. Bxf8 Qxf8 22. Nf3 Qc5 23. Rxd7 Rxd7 24. g3 Kg7 25. Kg2 Ng4 26. h3 Nh6 27. Rd1 Rxd1 28. Qxd1 Qxa5 29. Qd5 Qxd5 30. exd5 f6 31. c4 b6 32. Nd2 Nf7 33. Kf3 Nd6 34. Ke3 Kf7 35. Kd3 Ke7 36. f3 Kd7 37. g4 f5 38. g5 Nb7 39. Nb3 Nc5+ 40. Nxc5+ bxc5 41. Kc3 a5 42. Kd3 Kd6 43. Kc3 a4 44. Kd3 e4+ 45. fxe4 fxe4+ 46. Kxe4 a3 47. Kd3 a2 48. Kc2 a1Q 49. Kb3 Qd4 50. h4 Qxh4 51. Ka4 Qxc4+ 52. Ka5 Qb4+ 53. Ka6 c4 54. Ka7 c3 55. Ka6 c2 56. Ka7 Kxd5 57. Ka6 Ke5 58. Ka7 Kf5 59. Ka6 Kxg5 60. Ka7 c1Q 61. Ka6 Qa1# 0-1

[Event "GER Cup Net V4 U2400"]
[Site "Playchess.com INT"]
[Date "2020.05.31"]
[Round "8"]
[White "Koellner, Christof"]
[Black "Troyke, Christian"]
[Result "1-0"]
[ECO "B27"]
[WhiteElo "1985"]
[BlackElo "2229"]
[PlyCount "111"]
[EventDate "2020.05.31"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. d4 g6 2. e4 Bg7 3. Nf3 c5 4. dxc5 Na6 5. Bxa6 Qa5+ 6. Nc3 Qxa6 7. e5 b6 8. Nd5 Qb7 9. cxb6 axb6 10. Qd4 d6 11. Nxb6 dxe5 12. Qe3 Rb8 13. Nxc8 Rxc8 14. c3 e4 15. Nd4 e5 16. Nc2 Nf6 17. 0-0 0-0 18. a4 Ng4 19. Qe2 f5 20. h3 Nf6 21. a5 Kh8 22. a6 Qa8 23. Be3 f4 24. Bb6 f3 25. Qe3 fxg2 26. Rfd1 Nh5 27. Rd7 Rf3 28. Qd2 Nf4 29. Rd8+ Rxd8 30. Qxd8+ Qxd8 31. Bxd8 Nxh3+ 32. Kxg2 Nf4+ 33. Kf1 e3 34. Nxe3 Nd3 35. a7 Rxf2+ 36. Kg1 Bh6 37. a8Q Kg7 38. Ra7+ Rf7 39. Rxf7+ Kxf7 40. Nd5 e4 41. Qb7+ Ke6 42. Qa8 Bf8 43. b4 Bd6 44. Ne3 Ke5 45. Qd5+ Kf4 46. Qxd6+ Kxe3 47. Qf8 Ne5 48. Bc7 Nf3+ 49. Kf1 Nd2+ 50. Kg2 Nc4 51. b5 Kd3 52. b6 e3 53. b7 e2 54. Bg3 Ne3+ 55. Kf3 Nf5 56. Be1 1-0

[Event "GER Cup Net V4 U2400"]
[Site "Playchess.com INT"]
[Date "2020.05.31"]
[Round "7"]
[White "Koepke, Christian"]
[Black "Koellner, Christof"]
[Result "0-1"]
[ECO "A03"]
[WhiteElo "2108"]
[BlackElo "1985"]
[PlyCount "96"]
[EventDate "2020.05.31"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 Bg4 3. e3 Bxf3 4. Qxf3 e6 5. d4 Nf6 6. Bd3 c5 7. c3 Nc6 8. 0-0 Bd6 9. Kh1 cxd4 10. exd4 g6 11. Be3 h5 12. Nd2 Ng4 13. Bg1 Rc8 14. Rae1 0-0 15. h3 Nh6 16. Bf2 a6 17. g4 hxg4 18. hxg4 Qd7 19. Rg1 Kg7 20. f5 exf5 21. gxf5 Nxf5 22. Bxf5 Qxf5 23. Qxf5 Rh8+ 24. Kg2 gxf5 25. Kf1+ Kf8 26. Rg5 Bf4 27. Nf3 Bxg5 28. Nxg5 Re8 29. Rxe8+ Kxe8 30. Ke2 Ke7 31. Nf3 Rh1 32. Nd2 b5 33. a3 Ke6 34. Be3 Rh2+ 35. Kd3 Rh3 36. Ke2 Na5 37. Nf3 Rh1 38. Ng5+ Kf6 39. Nf3 Nc4 40. Bg5+ Ke6 41. b3 Nxa3 42. Bf4 a5 43. Bc7 a4 44. bxa4 bxa4 45. Ba5 Nc4 46. Bb4 a3 47. Ng5+ Kf6 48. Nf3 a2 0-1

[Event "GER Cup Net V4 U2400"]
[Site "Playchess.com INT"]
[Date "2020.05.31"]
[Round "1"]
[White "Meissner, Felix"]
[Black "Koellner, Christof"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "2227"]
[BlackElo "1985"]
[PlyCount "125"]
[EventDate "2020.05.31"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. a4 0-0 7. 0-0 exd4 8. Nxd4 Ne5 9. Ba2 Nc6 10. Nde2 Nb4 11. Bb3 Be6 12. Bxe6 fxe6 13. Nd4 Qd7 14. Qe2 c5 15. Nf3 Ne8 16. Rd1 Qc6 17. Bg5 Bf6 18. Bxf6 gxf6 19. Rd2 Rf7 20. Rad1 Kh8 21. Qc4 Re7 22. Nb5 a6 23. Nxd6 Nxd6 24. Rxd6 Qxa4 25. Rxe6 Rae8 26. Rxe7 Rxe7 27. Qxc5 Nc6 28. Qd6 Qxe4 29. Qxf6+ Kg8 30. h3 Qe6 31. Qc3 Rg7 32. Re1 Qd6 33. Qe3 Re7 34. Qg5+ Kf8 35. Qf5+ Rf7 36. Qg4 Rg7 37. Qh5 Rf7 38. Ng5 Re7 39. Nxh7+ Kg8 40. Rxe7 Qxe7 41. Ng5 Qg7 42. Qe8+ Qf8 43. Qxf8+ Kxf8 44. Ne6+ Ke7 45. Nc5 b6 46. Nxa6 Nd4 47. Nb4 Kd6 48. Kf1 Kc5 49. c3 Nf5 50. Ke2 Kc4 51. g4 Nh4 52. f4 Kb3 53. Nd3 Kc2 54. f5 b5 55. f6 Ng6 56. g5 Nf4+ 57. Nxf4 Kxb2 58. f7 Kxc3 59. f8Q b4 60. Qc5+ Kb3 61. Nd3 Ka2 62. Qxb4 Ka1 63. Qb2# 1-0

[Event "GER Cup Net V4 U2400"]
[Site "Playchess.com INT"]
[Date "2020.05.31"]
[Round "9"]
[White "Zimmermann, Rene"]
[Black "Koellner, Christof"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "2064"]
[BlackElo "1985"]
[PlyCount "94"]
[EventDate "2020.05.31"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. d4 d6 2. c3 Nf6 3. Bg5 Bf5 4. Nd2 h6 5. Bh4 Nbd7 6. Ngf3 c6 7. e3 Ne4 8. Nxe4 Bxe4 9. Nd2 Bg6 10. Be2 Qc7 11. 0-0 e5 12. f4 exf4 13. exf4 f5 14. Bh5 Kf7 15. Qb3+ d5 16. Bxg6+ Kxg6 17. Nf3 Kh7 18. Rae1 Bd6 19. Ne5 Rhf8 20. Re3 Nf6 21. Bxf6 gxf6 22. Nd3 Rae8 23. Rxe8 Rxe8 24. Qc2 Re4 25. g3 Qe7 26. Nf2 Kg7 27. Nxe4 fxe4 28. f5 c5 29. Qe2 c4 30. Qg4+ Kh8 31. Qg6 Qf8 32. b3 b5 33. bxc4 dxc4 34. Re1 Qe7 35. Qxh6+ Kg8 36. Qe3 a5 37. Qxe4 Qxe4 38. Rxe4 b4 39. Re8+ Kf7 40. Rc8 b3 41. axb3 cxb3 42. Rc6 Bb4 43. Re6 b2 44. Re1 a4 45. cxb4 a3 46. b5 a2 47. b6 b1Q 0-1

[Event "GER-ch Net Amateur Gr-A Final"]
[Site "Playchess.com INT"]
[Date "2020.04.18"]
[Round "13"]
[White "Colbow, Collin"]
[Black "Koellner, Christof"]
[Result "1/2-1/2"]
[ECO "C41"]
[WhiteElo "2033"]
[BlackElo "1992"]
[PlyCount "59"]
[EventDate "2020.04.18"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. 0-0 Nb6 7. Bb3 exd4 8. Nxd4 c5 9. Nf5 Bxf5 10. exf5 c4 11. Ba4+ Nxa4 12. Nxa4 d5 13. Nc3 0-0 14. Bg5 d4 15. Ne2 h6 16. Bf4 d3 17. cxd3 Qxd3 18. Qxd3 cxd3 19. Nc1 Rfd8 20. Rd1 Rd5 21. Rxd3 Rxf5 22. Be3 Rd5 23. Rxd5 Nxd5 24. Bd4 Bf6 25. Bxf6 Nxf6 26. Nb3 Rc8 27. Rc1 Rxc1+ 28. Nxc1 Kf8 29. Kf1 Ke7 30. Ke2 1/2-1/2

[Event "GER-ch Net Amateur Gr-A Final"]
[Site "Playchess.com INT"]
[Date "2020.04.18"]
[Round "1"]
[White "Huber, Philipp"]
[Black "Koellner, Christof"]
[Result "1-0"]
[ECO "E61"]
[WhiteElo "2098"]
[BlackElo "1992"]
[PlyCount "83"]
[EventDate "2020.04.18"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. d4 d6 2. Bg5 Nd7 3. Nf3 Ngf6 4. c4 g6 5. Nc3 Bg7 6. Qd2 h6 7. Bf4 Nh5 8. Bg3 c6 9. e3 0-0 10. Be2 e5 11. Rd1 Qe7 12. 0-0 Nxg3 13. hxg3 e4 14. Nh2 Nf6 15. d5 c5 16. f4 a6 17. g4 h5 18. gxh5 Nxh5 19. Qe1 Bxc3 20. bxc3 Ng7 21. g4 f5 22. g5 Bd7 23. Kg2 Kf7 24. Rh1 Rh8 25. Rb1 Rab8 26. Rb6 Qd8 27. Qb1 Qc7 28. Rb2 b6 29. Nf1 Rxh1 30. Kxh1 Qd8 31. Kg2 Ne8 32. Ng3 Rb7 33. Qh1 Nc7 34. Qh7+ Kf8 35. Qh8+ Ke7 36. Qg7+ Ke8 37. Qxg6+ Kf8 38. Qh6+ Kg8 39. Nh5 Qe7 40. Nf6+ Kf7 41. Qh7+ Kf8 42. Qg8# 1-0

[Event "GER-ch Net Amateur Gr-A Final"]
[Site "Playchess.com INT"]
[Date "2020.04.18"]
[Round "3"]
[White "Kistella, Roman"]
[Black "Koellner, Christof"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "2026"]
[BlackElo "1992"]
[PlyCount "47"]
[EventDate "2020.04.18"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. d4 d6 2. e4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. 0-0 Nb6 7. Be2 exd4 8. Nxd4 0-0 9. a4 a5 10. b3 d5 11. e5 Ne8 12. Bb2 c6 13. f4 f5 14. Kh1 Nc7 15. g4 g6 16. gxf5 Bxf5 17. Nxf5 Rxf5 18. Bd3 Rf8 19. f5 gxf5 20. Bxf5 Rf7 21. Qh5 Kh8 22. Ne2 Qf8 23. e6+ Rg7 24. Qxh7# 1-0

[Event "GER-ch Net Amateur Gr-A Final"]
[Site "Playchess.com INT"]
[Date "2020.04.18"]
[Round "8"]
[White "Kleeschaetzky, Rainer"]
[Black "Koellner, Christof"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "2035"]
[BlackElo "1992"]
[PlyCount "81"]
[EventDate "2020.04.18"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. a4 exd4 7. Qxd4 0-0 8. 0-0 Nc5 9. a5 Be6 10. Re1 Re8 11. Bf4 Nfd7 12. Nd5 Bf6 13. Nxf6+ Qxf6 14. Bxe6 Nxe6 15. Qxf6 Nxf6 16. Bd2 Nd7 17. Bc3 f6 18. Nd4 Nxd4 19. Bxd4 a6 20. f3 Kf7 21. Kf2 Ne5 22. Ra3 Nc6 23. Bc3 b5 24. axb6 cxb6 25. Rd1 Ke6 26. b3 a5 27. Bd2 Na7 28. c4 Nc6 29. Bf4 Red8 30. Ra2 Ne5 31. Be3 Rab8 32. h3 b5 33. f4 Nc6 34. cxb5 Rxb5 35. Rc2 Nb4 36. Rc7 Nc2 37. Rxc2 Rxb3 38. Rc7 a4 39. Kf3 a3 40. f5+ Ke5 41. Rd5# 1-0

[Event "GER-ch Net Amateur Gr-A Final"]
[Site "Playchess.com INT"]
[Date "2020.04.18"]
[Round "10"]
[White "Koellner, Christof"]
[Black "Hortolani, Sven Holger"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "1992"]
[BlackElo "2043"]
[PlyCount "60"]
[EventDate "2020.04.18"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 c5 3. Bxf6 exf6 4. e3 cxd4 5. Qxd4 Nc6 6. Qe4+ Qe7 7. Qxe7+ Bxe7 8. c3 d5 9. Nf3 0-0 10. Be2 Bf5 11. Nbd2 Rad8 12. Nb3 Bg6 13. 0-0 Rfe8 14. Rfd1 Bd6 15. Rd2 Be4 16. Nfd4 Nxd4 17. Nxd4 Re5 18. Bd1 Rg5 19. g3 Re8 20. Bb3 h5 21. h4 Rg6 22. Bd1 Bxg3 23. fxg3 Rxg3+ 24. Kh2 Rxe3 25. Bxh5 g6 26. Bg4 f5 27. Bh3 Kg7 28. Rg1 Kf6 29. Rg3 Re1 30. Rf2 Rh1# 0-1

[Event "GER-ch Net Amateur Gr-A Final"]
[Site "Playchess.com INT"]
[Date "2020.04.18"]
[Round "2"]
[White "Koellner, Christof"]
[Black "Lange, Stephan"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "1992"]
[BlackElo "2107"]
[PlyCount "51"]
[EventDate "2020.04.18"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. d4 g6 2. Nf3 Bg7 3. Nbd2 d6 4. e4 e5 5. dxe5 dxe5 6. Bc4 f6 7. 0-0 c6 8. c3 Nh6 9. a4 Qe7 10. b3 Be6 11. Ba3 Qd7 12. Qe2 Bxc4 13. Nxc4 Nf7 14. Rfd1 Qe6 15. Nd6+ Nxd6 16. Rxd6 Qxb3 17. Qd3 Na6 18. Nd2 Qf7 19. Nc4 Bf8 20. Rd1 Be7 21. Rd7 c5 22. Nd6+ Bxd6 23. Rxf7 Kxf7 24. Qxd6 Rhe8 25. Qd5+ Kg7 26. Qxb7+ 1-0

[Event "GER-ch Net Amateur Gr-A Final"]
[Site "Playchess.com INT"]
[Date "2020.04.18"]
[Round "9"]
[White "Koellner, Christof"]
[Black "Laux, Dominik"]
[Result "1/2-1/2"]
[ECO "D05"]
[WhiteElo "1992"]
[BlackElo "1889"]
[PlyCount "113"]
[EventDate "2020.04.18"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. e3 e6 4. Nbd2 c6 5. Bd3 Nbd7 6. 0-0 Be7 7. e4 dxe4 8. Nxe4 Nxe4 9. Bxe4 Nf6 10. Bd3 0-0 11. Qe2 b6 12. c3 Bb7 13. Rd1 Qc7 14. Bc2 c5 15. dxc5 Qxc5 16. Be3 Qh5 17. Nd4 Qxe2 18. Nxe2 Rfd8 19. f3 Kf8 20. Kf2 h6 21. Ng3 Nd5 22. Bd4 Bf6 23. Bxf6 Nxf6 24. Ne4 Nxe4+ 25. Bxe4 Bxe4 26. fxe4 Ke7 27. Ke3 f6 28. h4 Rac8 29. h5 Rxd1 30. Rxd1 Rc5 31. g4 f5 32. gxf5 exf5 33. Rg1 Kf7 34. Rf1 Kf6 35. Kd4 Re5 36. Rxf5+ Rxf5 37. exf5 Kxf5 38. c4 g6 39. hxg6 Kxg6 40. b4 Kf6 41. Kd5 h5 42. Ke4 h4 43. Kf4 h3 44. Kg3 Ke5 45. Kxh3 Kd4 46. c5 bxc5 47. bxc5 Kxc5 48. Kg3 Kc4 49. Kf2 Kc3 50. Ke2 Kb2 51. Kd2 Kxa2 52. Kc2 a5 53. Kc1 a4 54. Kc2 a3 55. Kc1 Ka1 56. Kc2 a2 57. Kc1 1/2-1/2

[Event "GER-ch Net Amateur Gr-A Final"]
[Site "Playchess.com INT"]
[Date "2020.04.18"]
[Round "12"]
[White "Koellner, Christof"]
[Black "Prill, Daniel"]
[Result "1-0"]
[ECO "D04"]
[WhiteElo "1992"]
[BlackElo "2030"]
[PlyCount "79"]
[EventDate "2020.04.18"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. d4 c6 2. Nf3 d5 3. Nbd2 Nf6 4. e3 Bg4 5. h3 Bh5 6. g4 Bg6 7. Ne5 Nbd7 8. h4 Ne4 9. h5 Nxe5 10. dxe5 Nxd2 11. Bxd2 Be4 12. f3 Qb6 13. fxe4 Qxb2 14. exd5 0-0-0 15. dxc6 Qxe5 16. cxb7+ Kb8 17. Kf2 e6 18. Bd3 Bd6 19. Qf3 f5 20. g5 g6 21. Rab1 gxh5 22. Rxh5 Rhg8 23. Qf4 Qd5 24. Qd4 Qc6 25. Qc4 Qd7 26. Qb5 Qe7 27. Ba5 Rd7 28. Qc6 e5 29. Bb5 Rc7 30. Bxc7+ Bxc7 31. Qd7 Qc5 32. Rxh7 Qxc2+ 33. Be2 e4 34. Qxc7+ Qxc7 35. Rxc7 Kxc7 36. b8Q+ Rxb8 37. Rxb8 Kxb8 38. g6 Kc7 39. g7 Kd7 40. g8Q 1-0

[Event "GER-ch Net Amateur Gr-A Final"]
[Site "Playchess.com INT"]
[Date "2020.04.18"]
[Round "7"]
[White "Koellner, Christof"]
[Black "Promyshlyanskiy, Vitaliy"]
[Result "1/2-1/2"]
[ECO "B00"]
[WhiteElo "1992"]
[BlackElo "2032"]
[PlyCount "136"]
[EventDate "2020.04.18"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. d4 Nc6 2. Nf3 d6 3. e4 Nf6 4. Nbd2 g6 5. c3 Bg7 6. h3 e5 7. dxe5 dxe5 8. Bb5 Qe7 9. 0-0 Bd7 10. a4 a6 11. Bc4 0-0 12. b4 Rfd8 13. Qe2 Nh5 14. Nb3 Be6 15. Bxe6 Qxe6 16. Nc5 Qc8 17. Bg5 Rd6 18. b5 axb5 19. axb5 Na5 20. Be7 Nf4 21. Qc2 Rb6 22. c4 Qe8 23. Bg5 Ne6 24. Nxe6 Rxe6 25. Rfd1 b6 26. c5 Qxb5 27. Rdb1 Qc6 28. Be3 Rd8 29. Rc1 Bf8 30. cxb6 Qxc2 31. Rxc2 cxb6 32. Bxb6 Rxb6 33. Rxa5 Rb1+ 34. Kh2 Re8 35. g3 Rb7 36. Rxe5 Rxe5 37. Nxe5 Re7 38. f4 f6 39. Ng4 Kf7 40. e5 Bg7 41. exf6 Bxf6 42. Nxf6 Kxf6 43. Kg2 h5 44. Kf3 Ra7 45. Rc3 Ra6 46. g4 hxg4+ 47. hxg4 Rb6 48. g5+ Kg7 49. Kg4 Rb4 50. Rc7+ Kg8 51. Kf3 Rb3+ 52. Ke4 Rb6 53. Ke5 Ra6 54. Rd7 Ra5+ 55. Rd5 Ra4 56. Rd4 Ra5+ 57. Ke6 Rf5 58. Re4 Kg7 59. Ke7 Rf7+ 60. Kd6 Rf5 61. Re7+ Kg8 62. Re4 Kg7 63. Kd7 Kg8 64. Ke8 Kg7 65. Re7+ Kg8 66. Re4 Kg7 67. Kd7 Kg8 68. Kd6 Kg7 1/2-1/2

[Event "GER-ch Net Amateur Gr-A Final"]
[Site "Playchess.com INT"]
[Date "2020.04.18"]
[Round "4"]
[White "Koellner, Christof"]
[Black "Weller, Manuel"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1992"]
[BlackElo "2092"]
[PlyCount "112"]
[EventDate "2020.04.18"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nc6 3. e3 Bg4 4. Be2 Nf6 5. 0-0 e6 6. c4 g6 7. b3 Bg7 8. Bb2 0-0 9. h3 Bxf3 10. Bxf3 Ne4 11. Nd2 f5 12. Nxe4 fxe4 13. Bg4 Qf6 14. Qd2 h5 15. Be2 Ne7 16. Ba3 c6 17. Bxe7 Qxe7 18. f4 exf3 19. Rxf3 Bh6 20. Raf1 Rxf3 21. Rxf3 Rf8 22. Qd3 Kg7 23. e4 Rxf3 24. Bxf3 dxc4 25. bxc4 Qb4 26. Qe2 Qb1+ 27. Kf2 Qa1 28. d5 Qd4+ 29. Kf1 e5 30. g3 Be3 31. Kg2 Bg5 32. h4 Be7 33. Kh3 Bc5 34. Bg2 a5 35. Qf1 a4 36. Qe2 a3 37. Qf1 Qb2 38. dxc6 bxc6 39. Qd3 Bd4 40. Qf3 Qxa2 41. g4 hxg4+ 42. Qxg4 Qxc4 43. Bf3 Qf1+ 44. Bg2 Qd3+ 45. Bf3 Qf1+ 46. Bg2 Qf7 47. h5 a2 48. hxg6 Qxg6 49. Qd7+ Kh6 50. Qa7 a1Q 51. Qxa1 Bxa1 52. Bf3 Bd4 53. Bg4 Qg5 54. Bf5 Bf2 55. Bg4 c5 56. Bh5 Qg3# 0-1

[Event "GER-ch Net Amateur Gr-A Final"]
[Site "Playchess.com INT"]
[Date "2020.04.18"]
[Round "6"]
[White "Peng, Xiang Tobias"]
[Black "Koellner, Christof"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2061"]
[BlackElo "1992"]
[PlyCount "57"]
[EventDate "2020.04.18"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 d6 2. f4 d5 3. e5 c5 4. Nf3 Nc6 5. c3 Bg4 6. h3 Bxf3 7. Qxf3 e6 8. Bb5 Nge7 9. 0-0 Qb6 10. Ba4 c4+ 11. Kh1 h5 12. d4 g6 13. Bc2 0-0-0 14. b3 Na5 15. bxc4 Nxc4 16. Nd2 Nxd2 17. Bxd2 Nc6 18. Rfb1 Qc7 19. a4 Be7 20. Bd3 Na5 21. c4 Nxc4 22. Bxc4 dxc4 23. Ba5 b6 24. Bc3 Rd5 25. a5 b5 26. a6 Qd7 27. Ra5 b4 28. Bxb4 Bxb4 29. Rxb4 1-0

[Event "GER-ch Net Amateur Gr-A Final"]
[Site "Playchess.com INT"]
[Date "2020.04.18"]
[Round "5"]
[White "Rausch, Stephan"]
[Black "Koellner, Christof"]
[Result "0-1"]
[ECO "D03"]
[WhiteElo "2123"]
[BlackElo "1992"]
[PlyCount "86"]
[EventDate "2020.04.18"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. Bg5 e6 4. c3 Be7 5. Nbd2 0-0 6. e3 h6 7. Bh4 Nbd7 8. Bd3 c5 9. 0-0 b6 10. Ne5 Nxe5 11. dxe5 Nd7 12. Bxe7 Qxe7 13. f4 a5 14. Qe2 Nb8 15. c4 Rd8 16. cxd5 exd5 17. Nf3 Ba6 18. Bxa6 Nxa6 19. f5 f6 20. e6 Nb4 21. Nh4 Nc6 22. Ng6 Qd6 23. Qg4 Ne7 24. Rf3 Nxg6 25. Qxg6 Ra7 26. Rg3 Kh8 27. Rd1 Qe7 28. Rh3 b5 29. Rh4 a4 30. a3 b4 31. axb4 cxb4 32. Rxh6+ gxh6 33. Qxh6+ Kg8 34. e4 Qg7 35. Qe3 a3 36. exd5 axb2 37. d6 Ra1 38. Qe1 Rxd6 39. Rxa1 bxa1Q 40. Qxa1 Rd2 41. Qa8+ Kh7 42. Qe4 Qa7+ 43. Kf1 Qf2# 0-1

[Event "GER-ch Net Amateur Gr-A Final"]
[Site "Playchess.com INT"]
[Date "2020.04.18"]
[Round "11"]
[White "Reichel, Jonathan"]
[Black "Koellner, Christof"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "1971"]
[BlackElo "1992"]
[PlyCount "96"]
[EventDate "2020.04.18"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nge2 Nc6 5. h3 exd4 6. Nxd4 Nxe4 7. Nxe4 Qe7 8. Nxc6 Qxe4+ 9. Be3 bxc6 10. Be2 d5 11. Bf3 Qb4+ 12. Bd2 Qxb2 13. 0-0 Bd6 14. c4 0-0 15. cxd5 cxd5 16. Re1 c6 17. Rc1 Bd7 18. Bc3 Qxa2 19. Qd4 f6 20. Bg4 c5 21. Qd1 Bxg4 22. Qxg4 d4 23. Ra1 Qd5 24. Bd2 Be5 25. Bh6 Rf7 26. f4 f5 27. Qg3 Bf6 28. Ra6 g6 29. Ree6 Bg7 30. Bg5 Rd7 31. Qe1 d3 32. Re8+ Rxe8 33. Qxe8+ Bf8 34. Bh6 Qf7 35. Qc8 d2 36. Ra1 d1Q+ 37. Rxd1 Rxd1+ 38. Kh2 c4 39. Bxf8 Qxf8 40. Qxc4+ Qf7 41. Qc8+ Kg7 42. Qc3+ Kh6 43. Qg3 Qe7 44. Qf3 Qe1 45. Qa8 Qg1+ 46. Kg3 Rd3+ 47. Kh4 Qf2+ 48. g3 Qxg3# 0-1

[Event "GER-ch Net Amateur Gr-A Vor3"]
[Site "Playchess.com INT"]
[Date "2020.04.16"]
[Round "9"]
[White "Gley, Reinhard"]
[Black "Koellner, Christof"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1800"]
[BlackElo "1983"]
[PlyCount "98"]
[EventDate "2020.04.16"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. h3 e6 4. Bg5 Be7 5. e3 0-0 6. Nbd2 c5 7. c3 h6 8. Bh4 b6 9. Qc2 Ba6 10. g4 Bxf1 11. Rxf1 Nfd7 12. Bxe7 Qxe7 13. Ne5 Nxe5 14. dxe5 Qh4 15. Rh1 Nc6 16. Nf3 Qe7 17. 0-0-0 b5 18. h4 b4 19. c4 Rfd8 20. h5 Na5 21. b3 dxc4 22. bxc4 Rxd1+ 23. Rxd1 Rd8 24. Nd2 Nc6 25. f4 a5 26. Ne4 Rxd1+ 27. Qxd1 Kf8 28. Qd6 Qxd6 29. exd6 e5 30. Nxc5 exf4 31. exf4 g6 32. Nd7+ Ke8 33. Ne5 gxh5 34. Nxc6 hxg4 35. Ne5 g3 36. c5 g2 37. Nf3 Kd7 38. Kd2 h5 39. Kd3 h4 40. Kd4 h3 41. Kd5 h2 42. c6+ Kc8 43. d7+ Kc7 44. Nd4 g1Q 45. Nb5+ Kd8 46. Kd6 Qg6+ 47. Kc5 Qf5+ 48. Kb6 Qxd7 49. cxd7 Kxd7 0-1

[Event "GER-ch Net Amateur Gr-A Vor3"]
[Site "Playchess.com INT"]
[Date "2020.04.16"]
[Round "5"]
[White "Hinrichs, Paul"]
[Black "Koellner, Christof"]
[Result "1-0"]
[ECO "A41"]
[WhiteElo "1720"]
[BlackElo "1997"]
[PlyCount "61"]
[EventDate "2020.04.16"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. d4 d6 2. c4 e5 3. d5 f5 4. e4 fxe4 5. Nc3 Nf6 6. Nge2 Bf5 7. Ng3 Bg6 8. h4 h5 9. f3 exf3 10. Qxf3 Be7 11. Bd3 Bxd3 12. Qxd3 0-0 13. Bd2 Na6 14. 0-0-0 Nc5 15. Qc2 c6 16. dxc6 bxc6 17. Be3 Qa5 18. a3 Rab8 19. Qg6 Rb3 20. Bxc5 dxc5 21. Nf5 Rxc3+ 22. Kb1 Rg3 23. Qxg3 Ng4 24. Nxe7+ Kh7 25. Qd3+ Kh8 26. Qg6 Nf6 27. Rhf1 Qc7 28. Rxf6 Rxf6 29. Qxh5+ Rh6 30. Qe8+ Kh7 31. Qg8# 1-0

[Event "GER-ch Net Amateur Gr-A Vor3"]
[Site "Playchess.com INT"]
[Date "2020.04.16"]
[Round "2"]
[White "Hund, Sarah"]
[Black "Koellner, Christof"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "1561"]
[BlackElo "2004"]
[PlyCount "65"]
[EventDate "2020.04.16"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Bd3 e5 4. c3 Nbd7 5. Nf3 d5 6. dxe5 dxe4 7. exf6 exf3 8. fxg7 Bxg7 9. gxf3 0-0 10. Be3 Ne5 11. Be2 Qh4 12. Nd2 Bh3 13. Rg1 Bf5 14. Qb3 Bd3 15. Bf1 Qxh2 16. Rxg7+ Kxg7 17. Bd4 f6 18. 0-0-0 Bxf1 19. Nxf1 Qf4+ 20. Ne3 Qxf3 21. Rg1+ Kh8 22. Qc2 Rg8 23. Rd1 Rg7 24. Nf5 Rg5 25. Ng3 Qg4 26. Rh1 Kg7 27. Rxh7+ Kf8 28. Rxc7 Rd8 29. Qb3 Nd7 30. Bc5+ Ke8 31. Bb4 Qf4+ 32. Kb1 Qxc7 33. Qe6# 1-0

[Event "GER-ch Net Amateur Gr-A Vor3"]
[Site "Playchess.com INT"]
[Date "2020.04.16"]
[Round "1"]
[White "Koellner, Christof"]
[Black "Frohnhaeuser, Simon"]
[Result "1-0"]
[ECO "D04"]
[WhiteElo "1997"]
[BlackElo "1734"]
[PlyCount "125"]
[EventDate "2020.04.16"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. e3 Bf5 4. h3 c5 5. c3 e6 6. g4 Be4 7. Bg2 Nc6 8. Nbd2 Be7 9. Nxe4 Nxe4 10. Nd2 Nxd2 11. Bxd2 Qb6 12. Qb3 c4 13. Qxb6 axb6 14. 0-0 b5 15. a3 0-0 16. e4 dxe4 17. Bxe4 Bd6 18. Kg2 Rab8 19. Be3 Ne7 20. Bc2 Nd5 21. Rae1 g6 22. Bh6 Rfe8 23. h4 Rbd8 24. Bg5 Rc8 25. Kf3 Kg7 26. h5 h6 27. Bd2 g5 28. Re2 Bf4 29. Bxf4 Nxf4 30. Re5 Nd5 31. Ree1 Nf4 32. Be4 Nd5 33. Re2 Kf6 34. Bxd5 exd5 35. Rfe1 Rxe2 36. Rxe2 Rd8 37. Re5 Rd6 38. Ke3 Re6 39. f4 gxf4+ 40. Kxf4 Rd6 41. Re8 b6 42. Rh8 Kg7 43. Rb8 Kf6 44. Rg8 Rd7 45. g5+ hxg5+ 46. Rxg5 Rd8 47. Rf5+ Ke6 48. Re5+ Kf6 49. Rf5+ Ke6 50. Rg5 Kf6 51. h6 Ke6 52. Kg4 Rh8 53. Kh5 Kf6 54. Rxd5 Ke6 55. Rxb5 f5 56. Rxb6+ Kd5 57. Rg6 f4 58. Kg4 Ke4 59. Re6+ Kd3 60. Kxf4 Kc2 61. Rb6 Kb1 62. Ke5 Ka2 63. Kd5 1-0

[Event "GER-ch Net Amateur Gr-A Vor3"]
[Site "Playchess.com INT"]
[Date "2020.04.16"]
[Round "3"]
[White "Koellner, Christof"]
[Black "Haufe, Laurin"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "1972"]
[BlackElo "1825"]
[PlyCount "121"]
[EventDate "2020.04.16"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Nbd2 Bg7 4. e4 d6 5. Bc4 0-0 6. 0-0 Nbd7 7. e5 dxe5 8. dxe5 Ne8 9. e6 fxe6 10. Ng5 Nc5 11. Qe2 Nd6 12. Nb3 Nxc4 13. Nxc5 Qd5 14. Ncxe6 Bxe6 15. Qxe6+ Qxe6 16. Nxe6 Rf5 17. Nxg7 Kxg7 18. b3 Nd6 19. Bb2+ Kg8 20. f3 Re8 21. Rfe1 e5 22. Rad1 Kf7 23. c4 b6 24. Ba3 Ke6 25. Bxd6 cxd6 26. Rd5 Kd7 27. Red1 Rf6 28. b4 Rc8 29. c5 bxc5 30. bxc5 Rc6 31. Rxe5 a6 32. Red5 Kc7 33. cxd6+ Rcxd6 34. Rxd6 Rxd6 35. Rxd6 Kxd6 36. Kf2 Kc5 37. f4 Kb4 38. g4 Ka3 39. f5 gxf5 40. gxf5 Kxa2 41. f6 a5 42. f7 a4 43. f8Q a3 44. Qf7+ Kb2 45. Qxh7 a2 46. Qg7+ Kb1 47. h4 a1Q 48. Qxa1+ Kxa1 49. h5 Kb2 50. h6 Kc2 51. h7 Kd2 52. h8Q Kd3 53. Qe8 Kd2 54. Qe3+ Kc2 55. Ke2 Kb2 56. Qd3 Kc1 57. Qd2+ Kb1 58. Kd3 Ka1 59. Kc3 Kb1 60. Kb3 Ka1 61. Qd1# 1-0

