[Event "Bundesliga 2324"]
[Site "Germany"]
[Date "2024.04.28"]
[Round "15.4"]
[White "Colbow, Collin"]
[Black "Koellner, Ruben Gideon"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2404"]
[BlackElo "2483"]
[PlyCount "72"]
[EventDate "2023.10.21"]
[EventType "team-tourn"]
[EventRounds "15"]
[EventCountry "GER"]
[SourceTitle "CB18_2024"]
[SourceDate "2024.05.01"]
[SourceVersion "1"]
[SourceVersionDate "2024.05.01"]
[SourceQuality "2"]
[WhiteTeam "Werder Bremen"]
[BlackTeam "Deizisau"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. 0-0 Nf6 5. d3 0-0 6. h3 d6 7. c3 a5 8. Re1 h6 9. d4 Ba7 10. Bb3 Re8 11. Bc2 exd4 12. cxd4 Nb4 13. Nc3 Nxc2 14. Qxc2 c6 15. Bf4 Be6 16. Rad1 d5 17. e5 Ne4 18. Nd2 f5 19. Nb3 Qh4 20. Bh2 Nxc3 21. Qxc3 a4 22. Nc5 Bxc5 23. Qxc5 f4 24. f3 Qg5 25. Kh1 Qf5 26. Rc1 g5 27. Qb4 Qf7 28. Rc3 Qe7 29. Qxe7 Rxe7 30. Rec1 Ra6 31. Ra3 Re8 32. h4 Bf5 33. hxg5 hxg5 34. g3 fxg3 35. Bxg3 Kf7 36. Kg2 Rh8 1/2-1/2

[Event "Bundesliga 2324"]
[Site "Germany"]
[Date "2024.04.27"]
[Round "14.4"]
[White "Koellner, Ruben Gideon"]
[Black "Kovacevic, Blazimir"]
[Result "0-1"]
[ECO "A80"]
[WhiteElo "2483"]
[BlackElo "2396"]
[PlyCount "204"]
[EventDate "2023.10.21"]
[EventType "team-tourn"]
[EventRounds "15"]
[EventCountry "GER"]
[SourceTitle "CB18_2024"]
[SourceDate "2024.05.01"]
[SourceVersion "1"]
[SourceVersionDate "2024.05.01"]
[SourceQuality "2"]
[WhiteTeam "Deizisau"]
[BlackTeam "Kirchweyhe"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. d4 e6 2. Nf3 f5 3. Bf4 Nf6 4. e3 d6 5. h4 Be7 6. c4 Ne4 7. Bd3 0-0 8. Qc2 Nc6 9. a3 e5 10. dxe5 dxe5 11. Bxe4 fxe4 12. Nxe5 Nxe5 13. Bxe5 Bxh4 14. g3 Bf6 15. Qxe4 Bxe5 16. Qxe5 Bg4 17. Nd2 c6 18. f3 Qd3 19. 0-0-0 Rae8 20. Qc5 b6 21. Qb4 c5 22. Qa4 Bd7 23. Qxa7 Rxe3 24. Qb7 Ba4 25. Qd5+ Qxd5 26. cxd5 Bxd1 27. Rxd1 Rd3 28. Re1 Rxd5 29. Re6 b5 30. f4 Rb8 31. Kc2 c4 32. Ne4 h6 33. g4 Rd3 34. f5 Rf3 35. Rg6 Kh7 36. Nc5 b4 37. axb4 Rxb4 38. Ne6 Rb7 39. Nf8+ Kg8 40. Ne6 Kh7 41. Nf8+ Kh8 42. Rc6 Rf2+ 43. Kc3 Rb3+ 44. Kxc4 Rg3 45. Ng6+ Kh7 46. Ne5 Rxb2 47. Ra6 Rf2 48. Ra1 Re2 49. Kd5 Rge3 50. Ng6 Rd2+ 51. Kc4 Rg2 52. Kd5 Rxg4 53. Nf8+ Kg8 54. Ne6 Kf7 55. Ra8 Rg1 56. Rf8+ Ke7 57. Rg8 Rxe6 58. fxe6 Rg5+ 59. Ke4 Kxe6 60. Kf4 Kf7 61. Ra8 Rb5 62. Ra6 Rb1 63. Kg4 Rf1 64. Kh5 Rf5+ 65. Kh4 Rf6 66. Ra4 g6 67. Ra7+ Kg8 68. Kg4 Rf7 69. Ra8+ Kg7 70. Ra5 Rc7 71. Ra4 h5+ 72. Kh4 Kh6 73. Ra6 Rc4+ 74. Kh3 Re4 75. Rb6 Kg5 76. Rb5+ Kf6 77. Rb6+ Kf5 78. Rb5+ Re5 79. Rb3 g5 80. Rf3+ Kg6 81. Ra3 h4 82. Ra8 Re3+ 83. Kh2 Kf5 84. Ra2 g4 85. Rf2+ Kg5 86. Rf8 Re2+ 87. Kh1 h3 88. Ra8 Kf4 89. Rf8+ Kg3 90. Rf1 Kh4 91. Ra1 g3 92. Ra4+ Kg5 93. Ra1 Kf4 94. Ra4+ Kf3 95. Ra1 Rd2 96. Re1 Kf2 97. Rg1 Rd3 98. Rf1+ Ke2 99. Rf2+ gxf2 100. Kh2 Rf3 101. Kh1 f1Q+ 102. Kh2 Qg2# 0-1

[Event "Titled Tuesday intern op 23rd Apr Late"]
[Site "Chess.com INT"]
[Date "2024.04.23"]
[Round "1"]
[White "Senft, Sean"]
[Black "Koellner, Ruben Gideon"]
[Result "1-0"]
[ECO "A41"]
[WhiteElo "2054"]
[BlackElo "2441"]
[PlyCount "91"]
[EventDate "2024.04.23"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB18_2024"]
[SourceDate "2024.05.01"]
[SourceVersion "1"]
[SourceVersionDate "2024.05.01"]
[SourceQuality "2"]

1. d4 d6 2. c4 e5 3. d5 f5 4. Nc3 Nf6 5. Bg5 Be7 6. Bxf6 Bxf6 7. e4 0-0 8. Bd3 fxe4 9. Nxe4 Bf5 10. Nf3 Nd7 11. 0-0 Be7 12. Qc2 Bg6 13. Nfd2 a5 14. Rae1 b6 15. Kh1 Qe8 16. Ng3 Bxd3 17. Qxd3 Nc5 18. Qc2 Bg5 19. Nde4 Bf4 20. Nxc5 bxc5 21. Ne4 Qg6 22. g3 Bh6 23. Qe2 Rab8 24. b3 a4 25. bxa4 Rb4 26. Nc3 Qf5 27. f3 Qg5 28. Rb1 Rxb1 29. Rxb1 Qd2 30. Qxd2 Bxd2 31. Nb5 Rxf3 32. Nxc7 e4 33. a5 Bxa5 34. Ne6 h5 35. Rb8+ Kh7 36. Rb7 Bc3 37. Kg2 Bd4 38. Ng5+ Kg6 39. Nxf3 exf3+ 40. Kxf3 Bc3 41. Rb6 Be5 42. a4 Kf5 43. a5 g5 44. a6 g4+ 45. Ke3 Bd4+ 46. Kd3 1-0

[Event "Titled Tuesday intern op 16th Apr Late"]
[Site "Chess.com INT"]
[Date "2024.04.16"]
[Round "4"]
[White "Boder, Jan"]
[Black "Koellner, Ruben Gideon"]
[Result "1-0"]
[ECO "A21"]
[WhiteElo "2328"]
[BlackElo "2441"]
[PlyCount "111"]
[EventDate "2024.04.16"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB17_2024"]
[SourceDate "2024.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.24"]
[SourceQuality "1"]

1. c4 d6 2. g3 e5 3. Bg2 g6 4. Nc3 Bg7 5. b4 Ne7 6. Bb2 0-0 7. d3 c6 8. Nf3 d5 9. 0-0 d4 10. Nb1 a5 11. b5 Nd7 12. a4 c5 13. e3 Rb8 14. exd4 exd4 15. Nbd2 b6 16. Re1 Bb7 17. Ne4 Nf6 18. Nfg5 Nxe4 19. Nxe4 Nf5 20. Bc1 Re8 21. Bf4 Be5 22. Qd2 Bxf4 23. Qxf4 Bxe4 24. Bxe4 Nd6 25. Bd5 Qd7 26. h4 Rbd8 27. Bc6 Rxe1+ 28. Rxe1 Qf5 29. Qxf5 Nxf5 30. h5 Kf8 31. Kg2 Rd6 32. Re8+ Kg7 33. g4 Nh4+ 34. Kg3 g5 35. Be4 Rf6 36. f3 h6 37. Rc8 Re6 38. Rc6 Kf6 39. Bd5 Rxc6 40. bxc6 Ke7 41. Bxf7 Kd6 42. Bd5 Kc7 43. Be4 Kd6 44. f4 Kc7 45. fxg5 hxg5 46. h6 Kd6 47. h7 b5 48. cxb5 Ng6 49. Bxg6 c4 50. dxc4 Kc5 51. h8Q d3 52. Qc3 Kb6 53. Qxd3 Kc5 54. c7 Kb6 55. c8Q Ka7 56. Qd4# 1-0

[Event "Titled Tuesday intern op 16th Apr Late"]
[Site "Chess.com INT"]
[Date "2024.04.16"]
[Round "1"]
[White "Koellner, Ruben Gideon"]
[Black "Novikova, Galina"]
[Result "1-0"]
[ECO "A40"]
[WhiteElo "2441"]
[BlackElo "2073"]
[PlyCount "57"]
[EventDate "2024.04.16"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB17_2024"]
[SourceDate "2024.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.24"]
[SourceQuality "1"]

1. d4 e5 2. dxe5 d6 3. Nf3 Bg4 4. exd6 Bxd6 5. Nc3 Nc6 6. Bg5 f6 7. Bh4 Qe7 8. e3 0-0-0 9. Bd3 Ne5 10. Qe2 Nxd3+ 11. cxd3 Bb4 12. h3 Bh5 13. Bg3 g5 14. d4 Nh6 15. Qb5 Bg6 16. 0-0 Nf5 17. Nd5 Rxd5 18. Qxd5 Nxg3 19. fxg3 Qxe3+ 20. Kh2 Bd6 21. Rae1 Bxg3+ 22. Kxg3 Qf4+ 23. Kf2 Rd8 24. Qe6+ Kb8 25. Kg1 h5 26. Qe3 Qd6 27. Qe7 Qd5 28. Qxf6 Be4 29. Rxe4 1-0

[Event "Titled Tuesday intern op 16th Apr Late"]
[Site "Chess.com INT"]
[Date "2024.04.16"]
[Round "3"]
[White "Koellner, Ruben Gideon"]
[Black "Stone, Vincent W"]
[Result "1-0"]
[ECO "A48"]
[WhiteElo "2441"]
[BlackElo "1982"]
[PlyCount "57"]
[EventDate "2024.04.16"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB17_2024"]
[SourceDate "2024.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.24"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Nbd2 Bg7 4. e4 0-0 5. Bc4 d5 6. exd5 Nxd5 7. c3 Bf5 8. 0-0 a6 9. Re1 b5 10. Bb3 Nc6 11. Ne4 Na5 12. Nc5 Nxb3 13. axb3 Qd6 14. b4 Rfe8 15. Ne5 f6 16. Nf3 e5 17. dxe5 fxe5 18. Ng5 Nf4 19. Qb3+ Qd5 20. Qxd5+ Nxd5 21. Rxa6 Rxa6 22. Nxa6 h6 23. Ne4 Bxe4 24. Rxe4 Ra8 25. Nc5 Ra1 26. Re1 e4 27. Nxe4 Nxb4 28. cxb4 Bxb2 29. Bd2 1-0

[Event "Titled Tuesday intern op 16th Apr Late"]
[Site "Chess.com INT"]
[Date "2024.04.16"]
[Round "2"]
[White "Vovk, Orest"]
[Black "Koellner, Ruben Gideon"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "2315"]
[BlackElo "2441"]
[PlyCount "148"]
[EventDate "2024.04.16"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB17_2024"]
[SourceDate "2024.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.24"]
[SourceQuality "1"]

1. g4 d5 2. h3 h5 3. g5 e5 4. Bg2 Be6 5. d4 e4 6. c4 c6 7. Nc3 Ne7 8. Qb3 Qb6 9. c5 Qxb3 10. axb3 Na6 11. Ra4 Nc7 12. Bf4 Kd7 13. b4 a6 14. Bxc7 Kxc7 15. b5 Nf5 16. bxc6 bxc6 17. e3 h4 18. Bf1 Be7 19. Bxa6 Rhb8 20. b4 Bxg5 21. Nge2 Bd8 22. Kd2 Bc8 23. Bxc8 Rxa4 24. Nxa4 Kxc8 25. Rb1 g5 26. Ke1 Ne7 27. Kf1 f5 28. Kg2 Bc7 29. Nec3 g4 30. b5 cxb5 31. Rxb5 Ra8 32. Nb6+ Bxb6 33. cxb6 Kb7 34. Nxd5 Nxd5 35. Rxd5 Ra2 36. Rxf5 g3 37. Rf4 Kxb6 38. Rxh4 Rxf2+ 39. Kg1 Kb5 40. Rxe4 Kc4 41. Rg4 Rf3 42. Kg2 Rxe3 43. Rxg3 Re2+ 44. Kf3 Rh2 45. Kg4 Kxd4 46. Rf3 Ke5 47. h4 Rg2+ 48. Kh5 Ke6 49. Kh6 Ke7 50. Rf5 Rg1 51. Rg5 Rh1 52. h5 Kf7 53. Rf5+ Kg8 54. Rg5+ Kh8 55. Rb5 Rg1 56. Rb8+ Rg8 57. Rb7 Rd8 58. Rh7+ Kg8 59. Rg7+ Kh8 60. Rg6 Rc8 61. Rd6 Rb8 62. Kg6 Ra8 63. Kf6 Rb8 64. Kg6 Ra8 65. h6 Rb8 66. Kf7 Kh7 67. Ke7 Ra8 68. Kd7 Ra7+ 69. Kc6 Ra3 70. Kc5 Rc3+ 71. Kd4 Rh3 72. Ke5 Rh5+ 73. Kf4 Rxh6 74. Rxh6+ Kxh6 1/2-1/2

[Event "Karlsruhe Grenke op"]
[Site "Karlsruhe"]
[Date "2024.04.01"]
[Round "9"]
[White "Knuedel, Torben"]
[Black "Koellner, Ruben Gideon"]
[Result "0-1"]
[ECO "C78"]
[WhiteElo "2299"]
[BlackElo "2453"]
[PlyCount "72"]
[EventDate "2024.03.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB14_2024"]
[SourceDate "2024.04.01"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Bc5 6. c3 b5 7. Bb3 d6 8. d4 Bb6 9. a4 Bg4 10. axb5 axb5 11. Rxa8 Qxa8 12. d5 Ne7 13. Qd3 0-0 14. Bg5 Ng6 15. h3 Bd7 16. Na3 Nh5 17. Ra1 Ngf4 18. Bxf4 Nxf4 19. Qf1 Qd8 20. Nc2 Qf6 21. Nce1 Qg6 22. Kh2 Qxe4 23. Rd1 Qg6 24. Bc2 Qh6 25. Ng1 f5 26. Bd3 Nxd3 27. Nxd3 e4 28. Nb4 Qf4+ 29. Kh1 Qxf2 30. Qxf2 Bxf2 31. Rf1 Bb6 32. Ne2 g5 33. g3 f4 34. g4 h5 35. Nd4 hxg4 36. hxg4 Bxd4 0-1

[Event "Karlsruhe Grenke op"]
[Site "Karlsruhe"]
[Date "2024.04.01"]
[Round "8"]
[White "Koellner, Ruben Gideon"]
[Black "Janeczko, Jakub"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "2453"]
[BlackElo "2278"]
[PlyCount "97"]
[EventDate "2024.03.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB14_2024"]
[SourceDate "2024.04.01"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.01"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 d5 3. e3 c5 4. Bxf6 gxf6 5. dxc5 e6 6. c4 dxc4 7. Nd2 c3 8. bxc3 Nd7 9. c6 bxc6 10. Ngf3 Bg7 11. Qa4 Qc7 12. Nd4 Bb7 13. Rb1 0-0 14. Be2 f5 15. 0-0 Nb6 16. Qa5 Rfd8 17. N2b3 Rd5 18. Qa3 Bf8 19. Qc1 c5 20. Nb5 Qe7 21. Na5 e5 22. Nxb7 Qxb7 23. e4 fxe4 24. c4 Rdd8 25. Qg5+ Bg7 26. Rfd1 Rxd1+ 27. Rxd1 Re8 28. Nd6 Qe7 29. Qg4 Rd8 30. Nf5 Rxd1+ 31. Bxd1 Qf6 32. Qxe4 Nxc4 33. Qxc4 Qxf5 34. Qxc5 Qb1 35. Qc8+ Bf8 36. Qg4+ Qg6 37. Qe2 Qg5 38. g3 Bc5 39. Bb3 Bd4 40. Qf3 Qg6 41. Bd5 Kg7 42. Be4 Qf6 43. Bf5 Qg5 44. Kg2 Qd2 45. Be4 Qg5 46. h4 Qf6 47. Bf5 h6 48. Qg4+ Kf8 49. Qf3 1/2-1/2

[Event "Karlsruhe Grenke op"]
[Site "Karlsruhe"]
[Date "2024.03.31"]
[Round "7"]
[White "Dobrikov, Marco"]
[Black "Koellner, Ruben Gideon"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "2362"]
[BlackElo "2453"]
[PlyCount "116"]
[EventDate "2024.03.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB14_2024"]
[SourceDate "2024.04.01"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.01"]
[SourceQuality "1"]

1. e4 d6 2. d4 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. f4 Ne8 11. Nd5 Nxd5 12. exd5 Nf6 13. Bf3 Nd7 14. b3 Bf6 15. Bb2 Nc5 16. Qd2 Bd7 17. Rae1 Re8 18. Rxe8+ Qxe8 19. Re1 Qf8 20. h3 b6 21. Bg4 Bxg4 22. hxg4 h6 23. Qe3 g6 24. Bc3 Qg7 25. Nb5 Bxc3 26. Nxc3 Rc8 27. Nb5 Qf6 28. g3 Na6 29. Kg2 Nb4 30. Qe4 Kg7 31. Qc4 c6 32. Na7 Rc7 33. Nxc6 Nxc6 34. dxc6 d5 35. Qxd5 Rxc6 36. Re2 Rc5 37. Qe4 Qc3 38. Kf2 Rc6 39. Qe3 Qxe3+ 40. Kxe3 Rc3+ 41. Kd4 Rxg3 42. Kc4 Rxg4 43. Kb5 Rxf4 44. Kxb6 f5 45. Kxa5 Re4 46. Rf2 f4 47. b4 g5 48. b5 g4 49. b6 g3 50. Rg2 h5 51. b7 Re8 52. c4 h4 53. c5 f3 54. Rxg3+ hxg3 55. c6 g2 56. c7 g1Q 57. c8Q Qe1+ 58. Kb6 Qe6+ 0-1

[Event "Karlsruhe Grenke op"]
[Site "Karlsruhe"]
[Date "2024.03.31"]
[Round "6"]
[White "Koellner, Ruben Gideon"]
[Black "Tokhirjonova, Gulruhbegim"]
[Result "1/2-1/2"]
[ECO "D04"]
[WhiteElo "2453"]
[BlackElo "2365"]
[PlyCount "89"]
[EventDate "2024.03.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB14_2024"]
[SourceDate "2024.04.01"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.01"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. e3 Bf5 4. Ne5 Nbd7 5. g4 Be6 6. h3 h5 7. Rg1 hxg4 8. hxg4 g5 9. Nd2 Bg7 10. Bd3 Nxe5 11. dxe5 Ne4 12. f4 gxf4 13. exf4 c6 14. Bxe4 dxe4 15. Nxe4 Qb6 16. Nf2 f6 17. Qd3 Rd8 18. Qc3 fxe5 19. f5 Bf7 20. Be3 e4 21. Bxb6 Bxc3+ 22. bxc3 axb6 23. Nxe4 Rh3 24. Ng3 Rh2 25. Rh1 Rdd2 26. Rxh2 Rxh2 27. 0-0-0 Rh4 28. Rd4 c5 29. Rf4 Kd7 30. Ne4 Bxa2 31. Nf2 Bd5 32. Kd2 b5 33. Ke3 e5 34. fxe6+ Kxe6 35. g5 Rxf4 36. Kxf4 b6 37. Nd3 Bc4 38. Ne5 Ba2 39. g6 Kf6 40. Nd7+ Kxg6 41. Nxb6 Bb1 42. Nd7 b4 43. Nxc5 bxc3 44. Ne4 Bxc2 45. Nxc3 1/2-1/2

[Event "Karlsruhe Grenke op"]
[Site "Karlsruhe"]
[Date "2024.03.30"]
[Round "5"]
[White "Frank, Adam"]
[Black "Koellner, Ruben Gideon"]
[Result "1/2-1/2"]
[ECO "C78"]
[WhiteElo "2284"]
[BlackElo "2453"]
[PlyCount "63"]
[EventDate "2024.03.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB14_2024"]
[SourceDate "2024.04.01"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. c3 Nf6 5. 0-0 a6 6. Ba4 b5 7. Bb3 d6 8. a4 b4 9. a5 0-0 10. d4 Ba7 11. h3 Rb8 12. Be3 exd4 13. cxd4 Ne7 14. Nbd2 Bb7 15. Qc2 d5 16. e5 Ne4 17. Rfc1 Rc8 18. Nxe4 dxe4 19. Ng5 Nf5 20. Nxe4 Nxd4 21. Bxd4 Qxd4 22. Nc5 Bd5 23. Bxd5 Qxd5 24. Nxa6 b3 25. Qf5 c5 26. Rd1 Qc4 27. Qd3 Qe6 28. Qb5 Qxe5 29. Qxb3 c4 30. Qc3 Qb5 31. Nb4 Rb8 32. Nd5 1/2-1/2

[Event "Karlsruhe Grenke op"]
[Site "Karlsruhe"]
[Date "2024.03.30"]
[Round "4"]
[White "Koellner, Ruben Gideon"]
[Black "Hecht, Carsten"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2453"]
[BlackElo "2295"]
[PlyCount "151"]
[EventDate "2024.03.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB14_2024"]
[SourceDate "2024.04.01"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.01"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. Bf4 c5 4. e3 Nc6 5. Nbd2 Qb6 6. dxc5 Qxb2 7. Rb1 Qc3 8. Bb5 g6 9. e4 dxe4 10. Be5 Qxc5 11. Bxf6 exf6 12. Nxe4 Qe7 13. 0-0 Bd7 14. Bxc6 Bxc6 15. Re1 Bxe4 16. Qd4 f5 17. Qxh8 0-0-0 18. Qc3+ Qc7 19. Qxc7+ Kxc7 20. Ng5 Bd5 21. c4 h6 22. cxd5 hxg5 23. Rec1+ Kb8 24. Rd1 Bc5 25. Rb3 Kc7 26. Kf1 b6 27. h3 Rh8 28. d6+ Kd7 29. Rbd3 Re8 30. Re1 Rxe1+ 31. Kxe1 g4 32. hxg4 fxg4 33. Ke2 Bxd6 34. Rd4 f5 35. Rd1 Ke6 36. Rh1 Bc5 37. Rh7 a5 38. Rg7 Kf6 39. Ra7 Ke6 40. Ra8 Kf6 41. a4 Ke6 42. Rd8 Ke5 43. Rg8 Kf6 44. Re8 Kf7 45. Rd8 Ke6 46. Rd2 Ke5 47. Kd3 Kf4 48. Rc2 Ke5 49. Kc4 Ke4 50. Re2+ Kf4 51. Kd5 g3 52. f3 Be3 53. Rc2 Bc5 54. Rc3 g5 55. Ke6 g4 56. fxg4 Kxg4 57. Ke5 f4 58. Ke4 Be3 59. Rc8 Kg5 60. Rf8 Kg6 61. Rf5 Kg7 62. Ke5 Kg6 63. Rf6+ Kg7 64. Kf5 Bd4 65. Re6 Be3 66. Re7+ Kf8 67. Ke6 Kg8 68. Rf7 Bd2 69. Kf6 Bc3+ 70. Kg6 Be5 71. Rf5 Bd6 72. Rf6 Be5 73. Re6 Bg7 74. Rxb6 f3 75. gxf3 g2 76. Rb1 1-0

[Event "Karlsruhe Grenke op"]
[Site "Karlsruhe"]
[Date "2024.03.29"]
[Round "2"]
[White "Koellner, Ruben Gideon"]
[Black "Khrapko, Marharyta"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2453"]
[BlackElo "2218"]
[PlyCount "163"]
[EventDate "2024.03.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB14_2024"]
[SourceDate "2024.04.01"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.01"]
[SourceQuality "1"]

1. d4 d6 2. Nf3 Nf6 3. Nbd2 g6 4. e4 Bg7 5. Bc4 0-0 6. Qe2 c5 7. dxc5 dxc5 8. 0-0 Nc6 9. c3 Qc7 10. Re1 Ng4 11. Bb3 a6 12. a4 Rb8 13. h3 Nge5 14. Nxe5 Bxe5 15. Nf3 Bg7 16. e5 Nd8 17. Bf4 Be6 18. Bc2 b5 19. axb5 axb5 20. Qe3 b4 21. Ng5 bxc3 22. bxc3 Rb2 23. Qc1 Qb6 24. Nxe6 Nxe6 25. Bg3 c4 26. Rb1 Rxb1 27. Qxb1 Qa5 28. Qa1 Ra8 29. Qb2 Nc5 30. Rd1 Na4 31. Bxa4 Qxa4 32. Rd4 Qb3 33. Qd2 h6 34. Kh2 Kh7 35. Rd7 Re8 36. Rc7 Qb5 37. Qf4 Kg8 38. Qxc4 Qxc4 39. Rxc4 g5 40. Rc6 h5 41. h4 gxh4 42. Bf4 Rd8 43. Kh3 Rd5 44. c4 Rd4 45. Bg5 e6 46. f4 Kh7 47. Rc5 Kg6 48. Kxh4 f6 49. exf6 Bxf6 50. Kh3 Rd3+ 51. g3 Bd4 52. Rc8 e5 53. Rc6+ Kf5 54. Rf6+ Ke4 55. Kh4 Bf2 56. Kxh5 Bxg3 57. fxe5 Bxe5 58. Rf8 Rc3 59. Rc8 Kf5 60. Rf8+ Ke4 61. Rc8 Kf5 62. Bh4 Rh3 63. Rf8+ Ke4 64. Kg4 Rc3 65. Rc8 Kd4 66. Bf2+ Kd3 67. c5 Rc4+ 68. Kh3 Ke4 69. Re8 Kd5 70. Rd8+ Kc6 71. Kg2 Bc3 72. Rd6+ Kb7 73. Rb6+ Kc7 74. Bg3+ Kd7 75. Rd6+ Kc8 76. c6 Re4 77. Rg6 Re8 78. Rg5 Bd2 79. Rb5 Kd8 80. Rd5+ Kc8 81. Rxd2 Re5 82. Rb2 1-0

[Event "Karlsruhe Grenke op"]
[Site "Karlsruhe"]
[Date "2024.03.29"]
[Round "3"]
[White "Kuberczyk, Christoph"]
[Black "Koellner, Ruben Gideon"]
[Result "1/2-1/2"]
[ECO "C41"]
[WhiteElo "2290"]
[BlackElo "2453"]
[PlyCount "111"]
[EventDate "2024.03.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB14_2024"]
[SourceDate "2024.04.01"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.01"]
[SourceQuality "1"]

1. d4 d6 2. e4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. a4 Be7 6. Bc4 0-0 7. 0-0 exd4 8. Nxd4 Re8 9. Re1 Ne5 10. Ba2 Bg4 11. f3 Bd7 12. Be3 a6 13. Qd2 c5 14. Nf5 Bxf5 15. exf5 Qd7 16. Nd5 Rad8 17. Bf4 Nxd5 18. Qxd5 Bf6 19. Re4 b5 20. Rae1 c4 21. Kh1 Qxf5 22. axb5 axb5 23. Qxb5 d5 24. g4 Qd7 25. Qxd7 Rxd7 26. R4e3 Ra8 27. Bxc4 dxc4 28. Bxe5 Bxe5 29. Rxe5 g6 30. Re8+ Rxe8 31. Rxe8+ Kg7 32. Re2 f5 33. Kg2 Kf6 34. h4 h6 35. Kg3 Rd1 36. Kf4 g5+ 37. hxg5+ hxg5+ 38. Ke3 fxg4 39. fxg4 Rg1 40. Kf3 Rf1+ 41. Kg2 Rb1 42. c3 Rd1 43. Kf2 Rb1 44. Ke3 Rg1 45. Kf3 Rf1+ 46. Kg2 Rd1 47. Re4 Rd2+ 48. Kf3 Rxb2 49. Rxc4 Ke6 50. Rd4 Rc2 51. c4 Rc3+ 52. Ke4 Rg3 53. Rd5 Rxg4+ 54. Kf3 Rf4+ 55. Kg3 Rxc4 56. Rxg5 1/2-1/2

[Event "Karlsruhe Grenke op"]
[Site "Karlsruhe"]
[Date "2024.03.28"]
[Round "1"]
[White "Mende, Andreas"]
[Black "Koellner, Ruben Gideon"]
[Result "0-1"]
[ECO "A13"]
[WhiteElo "2101"]
[BlackElo "2453"]
[PlyCount "100"]
[EventDate "2024.03.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB14_2024"]
[SourceDate "2024.04.01"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.01"]
[SourceQuality "1"]

1. c4 e6 2. g3 d5 3. Nf3 Nf6 4. Bg2 dxc4 5. Qa4+ Bd7 6. Qxc4 c5 7. Ne5 Qc8 8. Nxd7 Qxd7 9. 0-0 Nc6 10. d3 Be7 11. Qa4 Rc8 12. Nc3 0-0 13. Rd1 Rfd8 14. Bf4 b6 15. Rac1 h6 16. h4 Bf8 17. Kf1 Nd5 18. Bd2 Be7 19. a3 a5 20. Nxd5 exd5 21. Bc3 Qe6 22. d4 cxd4 23. Bd2 Bf6 24. Qb5 Ne7 25. b4 axb4 26. Bxb4 Rc4 27. Bxe7 Bxe7 28. Rb1 Bc5 29. a4 Ra8 30. Ra1 Rb4 31. Qd3 Rbxa4 32. Rxa4 Rxa4 33. Rb1 Ra3 34. Rb3 Ra2 35. Bf3 g5 36. hxg5 hxg5 37. Qb1 Ra7 38. g4 Kg7 39. Rd3 Qe5 40. Qb3 Qh2 41. Bxd5 Ra1+ 42. Rd1 Ra3 43. Qb2 Qh3+ 44. Bg2 Qxg4 45. Rc1 Qf5 46. Ra1 Rc3 47. Rd1 g4 48. e4 Qf4 49. Qd2 Qxd2 50. Rxd2 d3 0-1

[Event "Bundesliga 2324"]
[Site "Germany"]
[Date "2024.03.17"]
[Round "13.8"]
[White "Koellner, Ruben Gideon"]
[Black "Wong, Gengchun"]
[Result "0-1"]
[ECO "D04"]
[WhiteElo "2483"]
[BlackElo "2252"]
[PlyCount "84"]
[EventDate "2023.10.21"]
[EventType "team-tourn"]
[EventRounds "15"]
[EventCountry "GER"]
[SourceTitle "CB13_2024"]
[SourceDate "2024.03.27"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.27"]
[SourceQuality "1"]
[WhiteTeam "Deizisau"]
[BlackTeam "Dresden TU"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. d4 d5 2. Nf3 c5 3. e3 Nf6 4. Nbd2 Nc6 5. dxc5 e6 6. a3 a5 7. b3 Bxc5 8. Bb2 0-0 9. Bd3 Qe7 10. c4 e5 11. cxd5 Nxd5 12. Qb1 f5 13. Bc4 Be6 14. Nxe5 Nxe5 15. Bxe5 Nxe3 16. fxe3 Bxc4 17. Nxc4 b5 18. 0-0 bxc4 19. Qb2 f4 20. b4 Ba7 21. b5 fxe3 22. Bd4 e2 23. Rfe1 Bxd4+ 24. Qxd4 Rac8 25. b6 Rfd8 26. Qf2 Rd2 27. Rab1 Rf8 28. Qg3 Qc5+ 29. Kh1 Qxb6 30. Rbc1 Qd4 31. Qh3 Kh8 32. Qe6 Qd3 33. h3 h6 34. Kh2 c3 35. Qb3 Rc8 36. Qb7 Rd8 37. Rb1 Qd6+ 38. Kg1 c2 39. Rbc1 Rd1 40. Kf2 Rxc1 41. Rxc1 Qf4+ 42. Kxe2 Qxc1 0-1

[Event "Bundesliga 2324"]
[Site "Germany"]
[Date "2024.03.16"]
[Round "12.8"]
[White "Sreyas, Payyappat"]
[Black "Koellner, Ruben Gideon"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2075"]
[BlackElo "2483"]
[PlyCount "119"]
[EventDate "2023.10.21"]
[EventType "team-tourn"]
[EventRounds "15"]
[EventCountry "GER"]
[SourceTitle "CB13_2024"]
[SourceDate "2024.03.27"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.27"]
[SourceQuality "1"]
[WhiteTeam "Lister Turm"]
[BlackTeam "Deizisau"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

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. Nc3 0-0 10. Be3 Bg4 11. h3 Bh5 12. Qc2 Nxc3 13. Bxc6 Nxa2 14. Bxb7 Nb4 15. Qc3 Rb8 16. Qxb4 Rxb7 17. 0-0 Bxf3 18. gxf3 Qh4 19. Kh2 c5 20. Qa4 cxd4 21. Rg1 f6 22. Qc6 Rbf7 23. Rg4 Qh5 24. Bf4 fxe5 25. Qxd5 g6 26. Bxe5 Rd8 27. Qe6 Qxe5+ 28. Qxe5 Bc7 29. Qxc7 Rxc7 30. Rd1 d3 31. Rd2 Rc2 32. Rxc2 dxc2 33. Rc4 Rd2 34. Kg3 Kf7 35. f4 Ke6 36. Kf3 Kd5 37. b3 Rd3+ 38. Kg4 h5+ 39. Kg5 Rd2 40. Kxg6 Rxf2 41. Kxh5 a5 42. Rc8 Ke4 43. Kg6 Kxf4 44. Rc5 Ke3 45. h4 Kd2 46. Rd5+ Kc3 47. Rxa5 Rg2+ 48. Kf6 Rh2 49. Rc5+ Kxb3 50. Kg5 Rd2 51. Rxc2 Kxc2 52. h5 Kd3 53. h6 Ke4 54. h7 Rd8 55. Kf6 Kf4 56. Kg7 Rd7+ 57. Kg8 Kf5 58. h8Q Rd8+ 59. Kg7 Rxh8 60. Kxh8 1/2-1/2

[Event "Titled Tuesday intern op 12th Mar Late"]
[Site "Chess.com INT"]
[Date "2024.03.12"]
[Round "5"]
[White "Koellner, Ruben Gideon"]
[Black "Dobrikov, Marco"]
[Result "1-0"]
[ECO "A40"]
[WhiteElo "2453"]
[BlackElo "2362"]
[PlyCount "109"]
[EventDate "2024.03.12"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB12_2024"]
[SourceDate "2023.10.01"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.01"]
[SourceQuality "1"]

1. d4 g6 2. Nf3 Bg7 3. Nbd2 c5 4. e3 d5 5. dxc5 Nd7 6. Nb3 Nxc5 7. Nxc5 Qa5+ 8. Bd2 Qxc5 9. c4 dxc4 10. Qc2 Bf5 11. e4 Bg4 12. Bxc4 Rc8 13. Rc1 Bxf3 14. Bb5+ Kd8 15. Qxc5 Rxc5 16. Rxc5 Bxg2 17. Rg1 Bxe4 18. Bf4 e6 19. Ke2 Nf6 20. f3 Bd5 21. Rgc1 Ne8 22. Rc8+ Ke7 23. b3 Bd4 24. Bxe8 Rxe8 25. R1c7+ Kf8 26. Bh6+ Bg7 27. Bxg7+ Kxg7 28. Rxe8 Kf6 29. Ree7 e5 30. Rxb7 Bxb7 31. Rxb7 h5 32. Rxa7 e4 33. fxe4 Ke5 34. Rxf7 g5 35. Rf5+ Kxe4 36. Rxg5 h4 37. Rg4+ Kf5 38. Rxh4 Kg5 39. Rh3 Kf6 40. Rg3 Kf5 41. Kf2 Kf4 42. a3 Kf5 43. Re3 Kf4 44. b4 Kf5 45. b5 Kf4 46. b6 Kf5 47. b7 Kf4 48. b8Q+ Kf5 49. Qb4 Kf6 50. Rc3 Kf7 51. Rc5 Kf6 52. Qb6+ Kf7 53. Rc7+ Kf8 54. Qb7 Ke8 55. a4 1-0

[Event "Titled Tuesday intern op 12th Mar Late"]
[Site "Chess.com INT"]
[Date "2024.03.12"]
[Round "8"]
[White "Koellner, Ruben Gideon"]
[Black "Karas, Marek"]
[Result "1-0"]
[ECO "D04"]
[WhiteElo "2453"]
[BlackElo "2212"]
[PlyCount "61"]
[EventDate "2024.03.12"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB12_2024"]
[SourceDate "2023.10.01"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.01"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. e3 Bg4 4. h3 Bh5 5. g4 Bg6 6. Ne5 Nfd7 7. Nxg6 hxg6 8. Bg2 c6 9. Nd2 e5 10. e4 dxe4 11. Nxe4 Be7 12. dxe5 Nxe5 13. Qxd8+ Kxd8 14. Bf4 Nbd7 15. 0-0-0 f6 16. Ng5 fxg5 17. Bxe5 Bf6 18. Bd6 Re8 19. Rhe1 Rxe1 20. Rxe1 a5 21. Be4 Ne5 22. Rd1 Ke8 23. Bc7 Ke7 24. a4 Rh8 25. Bg2 Ra8 26. Re1 Ke6 27. h4 Re8 28. hxg5 Bxg5+ 29. Kb1 Bf4 30. Bxe5 Bxe5 31. f4 1-0

[Event "Titled Tuesday intern op 12th Mar Late"]
[Site "Chess.com INT"]
[Date "2024.03.12"]
[Round "10"]
[White "Koellner, Ruben Gideon"]
[Black "Pichot, Alan"]
[Result "1-0"]
[ECO "D04"]
[WhiteElo "2453"]
[BlackElo "2644"]
[PlyCount "49"]
[EventDate "2024.03.12"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB12_2024"]
[SourceDate "2023.10.01"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.01"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. e3 c6 4. Nbd2 Bf5 5. Ne5 h6 6. Bd3 Bxd3 7. cxd3 Nbd7 8. f4 g5 9. fxg5 hxg5 10. Ndf3 Rg8 11. 0-0 e6 12. e4 Qb6 13. Nxd7 Nxd7 14. Bxg5 Bd6 15. e5 Nxe5 16. Kh1 Nd7 17. Qe2 Qb4 18. a3 Qb5 19. Bh4 Rh8 20. Rae1 Rh6 21. g3 Qb6 22. Ng5 Be7 23. Nxf7 Rxh4 24. Qxe6 Rxh2+ 25. Kxh2 1-0

[Event "Titled Tuesday intern op 12th Mar Late"]
[Site "Chess.com INT"]
[Date "2024.03.12"]
[Round "3"]
[White "Koellner, Ruben Gideon"]
[Black "Sanal, Vahap"]
[Result "1/2-1/2"]
[ECO "A46"]
[WhiteElo "2453"]
[BlackElo "2558"]
[PlyCount "90"]
[EventDate "2024.03.12"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB12_2024"]
[SourceDate "2023.10.01"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.01"]
[SourceQuality "1"]

1. d4 d6 2. Nf3 Nf6 3. Nbd2 Nbd7 4. e4 e5 5. dxe5 Nxe5 6. Nxe5 dxe5 7. Bc4 Bc5 8. 0-0 0-0 9. Qe2 c6 10. a4 a5 11. Nb3 Bb6 12. Be3 Bxe3 13. Qxe3 Bg4 14. f3 Bd7 15. Rfd1 b6 16. Rd2 Qc7 17. Rad1 Rad8 18. Nc1 h6 19. Qc3 b5 20. Bf1 Qb6+ 21. Kh1 Rfe8 22. axb5 cxb5 23. Rd6 Bc6 24. Rxd8 Rxd8 25. Rxd8+ Qxd8 26. Qxc6 Qd1 27. Qxb5 Qxc1 28. c3 a4 29. Qe2 Nd7 30. Qf2 Nc5 31. Qxc5 Qxf1+ 32. Qg1 Qe2 33. Qa1 Kf8 34. h3 Qc2 35. Qa3+ Kg8 36. Qa1 h5 37. Kh2 h4 38. Kh1 g5 39. Kh2 Kg7 40. Qa3 Qf2 41. Qb4 Qg3+ 42. Kg1 Qe1+ 43. Kh2 Qg3+ 44. Kg1 Qe1+ 45. Kh2 Qg3+ 1/2-1/2

[Event "Titled Tuesday intern op 12th Mar Late"]
[Site "Chess.com INT"]
[Date "2024.03.12"]
[Round "2"]
[White "Koellner, Ruben Gideon"]
[Black "Sanchez Enriquez, Oscar Gerardo"]
[Result "1-0"]
[ECO "A41"]
[WhiteElo "2453"]
[BlackElo "2286"]
[PlyCount "86"]
[EventDate "2024.03.12"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB12_2024"]
[SourceDate "2023.10.01"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.01"]
[SourceQuality "1"]

1. d4 d6 2. Nf3 Bg4 3. Nbd2 Nd7 4. e4 Ngf6 5. Bd3 e5 6. c3 c6 7. h3 Bh5 8. Nf1 Be7 9. Ng3 Bg6 10. 0-0 0-0 11. Qe2 Re8 12. Rd1 Qc7 13. dxe5 dxe5 14. Nh4 Nc5 15. Nxg6 hxg6 16. Bc2 Ne6 17. Be3 Bc5 18. b4 Bb6 19. Bb3 Nf4 20. Qf3 Rad8 21. Ne2 Nxe2+ 22. Qxe2 Nh5 23. Bg5 Rxd1+ 24. Rxd1 Nf4 25. Qg4 Bxf2+ 26. Kxf2 Qb6+ 27. Kg3 Qe3+ 28. Kh2 Qxe4 29. Rd7 Rf8 30. Rxb7 c5 31. Rxa7 c4 32. Bd1 Qd3 33. Bxf4 exf4 34. Qf3 Qd2 35. Ra8 Rxa8 36. Qxa8+ Kh7 37. Qf3 f5 38. a4 Kh6 39. a5 Kg5 40. a6 Qa2 41. b5 Qb2 42. a7 Qa3 43. a8Q Qa6 1-0

[Event "Titled Tuesday intern op 12th Mar Late"]
[Site "Chess.com INT"]
[Date "2024.03.12"]
[Round "9"]
[White "Mazurkiewicz, Michal"]
[Black "Koellner, Ruben Gideon"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "2145"]
[BlackElo "2453"]
[PlyCount "80"]
[EventDate "2024.03.12"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB12_2024"]
[SourceDate "2023.10.01"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.01"]
[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. Nh3 Ke7 10. Nf2 Nbd7 11. Nd3 a6 12. Be3 h6 13. a4 g5 14. 0-0 Rag8 15. g3 h5 16. Kg2 h4 17. g4 Nh7 18. a5 Ndf8 19. Na4 Ng6 20. Nac5 Rb8 21. h3 Nf4+ 22. Bxf4 gxf4 23. Ra3 Rhd8 24. Rb3 Bxc5 25. Nxc5 Rd2+ 26. Rf2 Rbd8 27. Nd3 Rxf2+ 28. Kxf2 Ng5 29. Kg2 c5 30. Rxb7+ Kf6 31. b3 Rc8 32. Nf2 c4 33. b4 Nf7 34. b5 axb5 35. Rxb5 Ra8 36. Rc5 Nd6 37. Rc6 Ke7 38. a6 Kd7 39. Rb6 Kc7 40. Rb4 Rxa6 0-1

[Event "Titled Tuesday intern op 12th Mar Late"]
[Site "Chess.com INT"]
[Date "2024.03.12"]
[Round "11"]
[White "Paravyan, David"]
[Black "Koellner, Ruben Gideon"]
[Result "1/2-1/2"]
[ECO "C41"]
[WhiteElo "2612"]
[BlackElo "2453"]
[PlyCount "132"]
[EventDate "2024.03.12"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB12_2024"]
[SourceDate "2023.10.01"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.01"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. h3 Be7 6. g4 h6 7. Be3 c6 8. a4 Qc7 9. Bc4 Nf8 10. g5 hxg5 11. Nxg5 Ne6 12. Nxe6 Bxe6 13. Bxe6 fxe6 14. dxe5 dxe5 15. a5 Bb4 16. a6 b5 17. Kf1 Qf7 18. Qf3 0-0-0 19. Ne2 Kb8 20. Rg1 Rh7 21. Rg5 Bd6 22. Rd1 Qe7 23. Kg2 Bc7 24. Rxd8+ Qxd8 25. Ng3 Qh8 26. Rg6 Rxh3 27. Bg5 Rh2+ 28. Kg1 Bb6 29. Be3 Bc7 30. Rxg7 Qxg7 31. Kxh2 Ng4+ 32. Kh3 Nxe3 33. Qxe3 Bb6 34. Qf3 Kc7 35. b4 Qe7 36. c3 c5 37. Nh5 cxb4 38. cxb4 Bd4 39. Nf6 Qxb4 40. Qh5 Kb6 41. Qe8 Qd6 42. Qc8 Ka5 43. Nd7 b4 44. Nb8 Ka4 45. Qb7 Qc5 46. Nc6 b3 47. f4 Ka3 48. fxe5 Bxe5 49. Nxe5 Qxe5 50. Qxa7 b2 51. Qb7 Qc3+ 52. Kg4 Qb3 53. Qxb3+ Kxb3 54. a7 b1Q 55. a8Q Qg1+ 56. Kh5 Qg3 57. Qc6 e5 58. Kh6 Kb4 59. Kh5 Kb3 60. Kh6 Kb4 61. Qg6 Qh4+ 62. Kg7 Kc4 63. Qe6+ Kd4 64. Qd5+ Ke3 65. Qxe5 Qxe4 66. Qxe4+ Kxe4 1/2-1/2

[Event "Titled Tuesday intern op 12th Mar Late"]
[Site "Chess.com INT"]
[Date "2024.03.12"]
[Round "6"]
[White "Prestia, Paris"]
[Black "Koellner, Ruben Gideon"]
[Result "0-1"]
[ECO "A21"]
[WhiteElo "2059"]
[BlackElo "2453"]
[PlyCount "88"]
[EventDate "2024.03.12"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB12_2024"]
[SourceDate "2023.10.01"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.01"]
[SourceQuality "1"]

1. d4 d6 2. c4 e5 3. Nf3 e4 4. Nfd2 f5 5. e3 Nf6 6. Nc3 c5 7. d5 Nbd7 8. Be2 g6 9. f3 exf3 10. Nxf3 Bg7 11. Qc2 0-0 12. e4 fxe4 13. Nxe4 Nxe4 14. Qxe4 Nf6 15. Qh4 Bf5 16. 0-0 Re8 17. Re1 Ng4 18. Qxd8 Raxd8 19. Bg5 Rb8 20. Bf1 Bxb2 21. Rad1 Ne5 22. Bf4 Bc3 23. Re3 Nxf3+ 24. Rxf3 Bd4+ 25. Rxd4 cxd4 26. Bxd6 Rbc8 27. c5 Be4 28. Rf4 Bxd5 29. Rxd4 Bxa2 30. Ra4 Bd5 31. Rxa7 Ra8 32. Rxa8 Rxa8 33. Kf2 Ra2+ 34. Kg3 Kf7 35. h4 Ra3+ 36. Kf2 Ke6 37. Bf8 Ra2+ 38. Kg3 h5 39. Bh6 Ke5 40. Bg7+ Ke4 41. Bb5 Kf5 42. Bd7+ Be6 43. c6 Bxd7 44. cxb7 Ra3+ 0-1

[Event "Titled Tuesday intern op 12th Mar Late"]
[Site "Chess.com INT"]
[Date "2024.03.12"]
[Round "7"]
[White "Shimanov, Aleksandr"]
[Black "Koellner, Ruben Gideon"]
[Result "1-0"]
[ECO "A13"]
[WhiteElo "2578"]
[BlackElo "2453"]
[PlyCount "83"]
[EventDate "2024.03.12"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB12_2024"]
[SourceDate "2023.10.01"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.01"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Bd7 6. Qxc4 c5 7. Ne5 Qc8 8. Qd3 Nc6 9. Nxd7 Nxd7 10. 0-0 Be7 11. Nc3 0-0 12. b3 Rd8 13. Bb2 Nf6 14. Qc2 Nd4 15. Qd1 Qd7 16. Rc1 Rac8 17. d3 b6 18. Qd2 Nd5 19. Nxd5 exd5 20. e3 Ne6 21. f4 d4 22. e4 Nf8 23. Rce1 b5 24. e5 c4 25. bxc4 bxc4 26. dxc4 Rxc4 27. Qd3 Qa4 28. f5 Qc2 29. Be4 Qxd3 30. Bxd3 Rc7 31. Rc1 Rb7 32. Ba1 Ba3 33. Rc2 Re7 34. Re1 Red7 35. Re4 Rd5 36. e6 fxe6 37. fxe6 Ng6 38. Kg2 Ne5 39. Rd2 Bb4 40. Rd1 Bc3 41. Bc2 Bxa1 42. e7 1-0

[Event "Titled Tuesday intern op 12th Mar Late"]
[Site "Chess.com INT"]
[Date "2024.03.12"]
[Round "4"]
[White "Taher, Yoseph Theolifus"]
[Black "Koellner, Ruben Gideon"]
[Result "1-0"]
[ECO "C34"]
[WhiteElo "2445"]
[BlackElo "2453"]
[PlyCount "55"]
[EventDate "2024.03.12"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB12_2024"]
[SourceDate "2023.10.01"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.01"]
[SourceQuality "1"]

1. e4 d6 2. f4 e5 3. Nf3 exf4 4. d4 g5 5. h4 g4 6. Ng5 h6 7. Nxf7 Kxf7 8. Bc4+ Kg7 9. Bxf4 Nf6 10. Nc3 Nc6 11. Qd2 Nh5 12. 0-0-0 Be7 13. Be3 Bd7 14. Rhf1 Nf6 15. Bf4 Be8 16. Qe2 Bh5 17. e5 Ne8 18. Nd5 Bxh4 19. Kb1 Bg5 20. g3 Rf8 21. Rh1 Bg6 22. Qxg4 Qc8 23. e6 Bf5 24. Qh5 Qxe6 25. Bxg5 hxg5 26. Nf4 Qf6 27. Ne6+ Bxe6 28. Qh7# 1-0

[Event "Titled Tuesday intern op 12th Mar Late"]
[Site "Chess.com INT"]
[Date "2024.03.12"]
[Round "1"]
[White "Todev, Simeon"]
[Black "Koellner, Ruben Gideon"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "2095"]
[BlackElo "2453"]
[PlyCount "92"]
[EventDate "2024.03.12"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB12_2024"]
[SourceDate "2023.10.01"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.01"]
[SourceQuality "1"]

1. e4 d6 2. Nf3 Nf6 3. Nc3 e5 4. d4 Nbd7 5. dxe5 dxe5 6. Bg5 Be7 7. Bc4 c6 8. 0-0 0-0 9. h3 h6 10. Bh4 b5 11. Bd3 a5 12. Bg3 Qc7 13. Qe2 a4 14. Nd1 Re8 15. Ne3 Bf8 16. Nf5 g6 17. Ne3 Nh5 18. Bh2 Nf4 19. Bxf4 exf4 20. Ng4 h5 21. Ngh2 Bg7 22. c3 a3 23. Rfc1 axb2 24. Qxb2 Nc5 25. Qe2 Be6 26. Nd4 Nxd3 27. Qxd3 Bc4 28. Qc2 Ra3 29. Qb2 Rea8 30. Nhf3 Rxa2 31. Rxa2 Rxa2 32. Qb1 Qd7 33. Rd1 Qe8 34. Nd2 Ra4 35. Nxc4 Rxc4 36. Qd3 c5 37. Nf3 Rxc3 38. Qd2 b4 39. Qxf4 b3 40. Qd2 Qxe4 41. Qd8+ Bf8 42. Ng5 Qe7 43. Qd2 Rc2 44. Qf4 b2 45. Ne4 Rc1 46. Nf6+ Qxf6 0-1

[Event "Titled Tuesday intern op 27th Feb Late"]
[Site "Chess.com INT"]
[Date "2024.02.27"]
[Round "5"]
[White "Aghasiyev, Kamal"]
[Black "Koellner, Ruben Gideon"]
[Result "0-1"]
[ECO "A55"]
[WhiteElo "2441"]
[BlackElo "2465"]
[PlyCount "122"]
[EventDate "2024.02.27"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB10_2024"]
[SourceDate "2024.03.06"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.06"]
[SourceQuality "1"]

1. d4 d6 2. Nf3 Nf6 3. g3 Nbd7 4. Bg2 e5 5. 0-0 Be7 6. c4 0-0 7. Nc3 c6 8. e4 a6 9. Re1 b5 10. a3 Bb7 11. cxb5 cxb5 12. Nh4 Re8 13. Nf5 Bf8 14. Nd5 Nxd5 15. exd5 Nf6 16. dxe5 dxe5 17. Bg5 h6 18. Bxf6 Qxf6 19. Ne3 Bc5 20. Rc1 Bd4 21. Rc7 Qb6 22. Rxb7 Qxb7 23. d6 Qd7 24. Bxa8 Rxa8 25. Qf3 Rd8 26. Nf5 g6 27. Nxd4 exd4 28. Re7 Qf5 29. Qc6 Kg7 30. d7 d3 31. Qd6 Qf6 32. Qxf6+ Kxf6 33. Re1 Rxd7 34. Kg2 d2 35. Rd1 Ke5 36. Kf3 Rd3+ 37. Ke2 Ke4 38. Rxd2 Rxd2+ 39. Kxd2 Kf3 40. Ke1 g5 41. Kf1 g4 42. Kg1 Ke2 43. Kg2 h5 44. Kg1 a5 45. Kg2 a4 46. Kg1 Kd2 47. f4 gxf3 48. Kf2 Kc2 49. Kxf3 Kxb2 50. g4 hxg4+ 51. Kxg4 Kxa3 52. h4 b4 53. h5 b3 54. h6 b2 55. h7 b1Q 56. h8Q Qg6+ 57. Kf3 Qe6 58. Qe8 Qb3+ 59. Ke2 Ka2 60. Qe5 a3 61. Kd2 Qb2+ 0-1

[Event "Titled Tuesday intern op 27th Feb Late"]
[Site "Chess.com INT"]
[Date "2024.02.27"]
[Round "7"]
[White "Ibadov, Dashgyn"]
[Black "Koellner, Ruben Gideon"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "2360"]
[BlackElo "2465"]
[PlyCount "114"]
[EventDate "2024.02.27"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB10_2024"]
[SourceDate "2024.03.06"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.06"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. a4 c6 6. Bc4 Be7 7. 0-0 h6 8. Re1 Qc7 9. h3 Nf8 10. Qd3 g5 11. d5 Ng6 12. Be3 g4 13. hxg4 Bxg4 14. Nd2 h5 15. Bb3 h4 16. dxc6 bxc6 17. Nc4 Nh5 18. f3 Ngf4 19. Qd2 Be6 20. Rad1 Rd8 21. Kh2 Rg8 22. Bxf4 Nxf4 23. Ne3 Rg3 24. Bxe6 fxe6 25. Ne2 Nxe2 26. Qxe2 Bg5 27. Ng4 Bf4 28. Kh1 Ke7 29. Nf2 Rdg8 30. Rg1 Qb6 31. Nh3 Be3 32. Rge1 Rxg2 33. Qxg2 Rxg2 34. Kxg2 Qxb2 35. Re2 d5 36. Rd3 d4 37. Rb3 Qc1 38. Rb7+ Kd6 39. Rb3 c5 40. Nf2 c4 41. Rb5 a6 42. Ra5 Ke7 43. Rxa6 Kf6 44. Ng4+ Kg5 45. Nxe3 dxe3 46. Rxe6 Kf4 47. Rf6+ Kg5 48. Rf5+ Kg6 49. f4 exf4 50. Rxf4 Kg5 51. Rf3 Kg4 52. Rfxe3 Qa1 53. Rf2 Qxa4 54. e5 Qc6+ 55. Kg1 h3 56. e6 Qc5 57. Re4+ Kg3 0-1

[Event "Titled Tuesday intern op 27th Feb Late"]
[Site "Chess.com INT"]
[Date "2024.02.27"]
[Round "4"]
[White "Koellner, Ruben Gideon"]
[Black "Bortnyk, Olexandr"]
[Result "0-1"]
[ECO "A47"]
[WhiteElo "2465"]
[BlackElo "2608"]
[PlyCount "50"]
[EventDate "2024.02.27"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB10_2024"]
[SourceDate "2024.03.06"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.06"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 b6 3. Nbd2 Bb7 4. e3 g6 5. Bd3 d5 6. Ne5 Bg7 7. f4 c5 8. c3 0-0 9. Qf3 Ba6 10. Bxa6 Nxa6 11. g4 Nc7 12. h4 h5 13. g5 Nd7 14. 0-0 Nxe5 15. fxe5 Qd7 16. Qg3 a5 17. a4 Ne6 18. Nf3 b5 19. axb5 Qxb5 20. Rf2 a4 21. Qg2 Rfb8 22. Ne1 Qb3 23. Ra3 Qd1 24. Bd2 Rxb2 25. Qxd5 Rd8 0-1

[Event "Titled Tuesday intern op 27th Feb Late"]
[Site "Chess.com INT"]
[Date "2024.02.27"]
[Round "6"]
[White "Koellner, Ruben Gideon"]
[Black "Erigaisi, Arjun Kumar"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "2465"]
[BlackElo "2738"]
[PlyCount "140"]
[EventDate "2024.02.27"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB10_2024"]
[SourceDate "2024.03.06"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.06"]
[SourceQuality "1"]

1. d4 d6 2. Nf3 g6 3. Nbd2 Bg7 4. e4 Nc6 5. c3 e5 6. dxe5 dxe5 7. Bc4 Nf6 8. 0-0 0-0 9. a4 a5 10. Qe2 Nh5 11. g3 Kh8 12. Rd1 f5 13. Nf1 Qe8 14. Be3 b6 15. exf5 Bxf5 16. Bd5 Nf6 17. Nh4 Bg4 18. Bf3 Bxf3 19. Nxf3 e4 20. Nd4 Ne5 21. Bf4 Nd3 22. Rxd3 exd3 23. Qxd3 Qf7 24. Ne3 Nh5 25. Ng2 Nxf4 26. Nxf4 g5 27. Nh3 h6 28. f4 Rad8 29. fxg5 c5 30. Nf4 cxd4 31. Ng6+ Kg8 32. Nxf8 Rxf8 33. gxh6 Bxh6 34. cxd4 Qf2+ 35. Kh1 Qf3+ 36. Qxf3 Rxf3 37. Re1 Rb3 38. Re6 Bg7 39. d5 Kf7 40. Rc6 Bxb2 41. Rc7+ Kf6 42. d6 Be5 43. Rc6 Ke6 44. Kg2 Bxd6 45. g4 Rb2+ 46. Kf3 Kd5 47. Rc8 Rxh2 48. g5 Rh1 49. Kg4 Ke6 50. Rc6 Rg1+ 51. Kh5 Kf5 52. Kh6 Bf8+ 53. Kh7 Rxg5 54. Rxb6 Bb4 55. Kh6 Rg1 56. Rb5+ Ke4 57. Rb8 Kd3 58. Rd8+ Kc4 59. Re8 Kb3 60. Re3+ Kxa4 61. Kh5 Kb5 62. Re5+ Kc4 63. Re4+ Kb3 64. Re3+ Bc3 65. Re8 a4 66. Rb8+ Bb4 67. Ra8 a3 68. Ra6 a2 69. Rg6 Rxg6 70. Kxg6 a1Q 0-1

[Event "Titled Tuesday intern op 27th Feb Late"]
[Site "Chess.com INT"]
[Date "2024.02.27"]
[Round "1"]
[White "Koellner, Ruben Gideon"]
[Black "Kotyk, Michael"]
[Result "1-0"]
[ECO "D05"]
[WhiteElo "2465"]
[BlackElo "2125"]
[PlyCount "95"]
[EventDate "2024.02.27"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB10_2024"]
[SourceDate "2024.03.06"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.06"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 e6 3. e3 Nf6 4. Nbd2 c5 5. c3 c4 6. Qc2 Nc6 7. e4 dxe4 8. Nxe4 Nxe4 9. Qxe4 Na5 10. Ne5 Qd5 11. Qf4 f6 12. Nf3 Bd6 13. Qe3 b5 14. Be2 Bb7 15. 0-0 Kf7 16. Ne1 Qf5 17. h3 h5 18. Bf3 Bd5 19. Bd2 Nc6 20. a3 g5 21. Bxd5 exd5 22. Qf3 Qxf3 23. Nxf3 g4 24. Ne1 Rhg8 25. hxg4 hxg4 26. g3 a5 27. Nc2 Rae8 28. Rae1 Kg6 29. Ne3 Ne7 30. Nxg4 Nf5 31. Kg2 b4 32. axb4 axb4 33. Ne3 Nxe3+ 34. Bxe3 b3 35. Ra1 Ra8 36. Rh1 Rgb8 37. Rh6+ Kf7 38. Rh7+ Ke6 39. Rha7 Rxa7 40. Rxa7 f5 41. Ra6 Kd7 42. Rxd6+ Kxd6 43. Bf4+ Ke6 44. Bxb8 Kf6 45. Kf3 Kg5 46. Be5 f4 47. Bxf4+ Kf5 48. g4+ 1-0

[Event "Titled Tuesday intern op 27th Feb Late"]
[Site "Chess.com INT"]
[Date "2024.02.27"]
[Round "9"]
[White "Koellner, Ruben Gideon"]
[Black "Pichot, Alan"]
[Result "0-1"]
[ECO "D04"]
[WhiteElo "2465"]
[BlackElo "2644"]
[PlyCount "62"]
[EventDate "2024.02.27"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB10_2024"]
[SourceDate "2024.03.06"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.06"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. e3 c6 4. Nbd2 Bf5 5. Ne5 Nfd7 6. Qf3 Bg6 7. Nxg6 hxg6 8. Bd3 e5 9. e4 f5 10. Qg3 Qf6 11. dxe5 Nxe5 12. exd5 Bd6 13. Qe3 0-0 14. Nf3 Nxf3+ 15. Qxf3 Re8+ 16. Kf1 Nd7 17. dxc6 bxc6 18. Bc4+ Kf8 19. Qxc6 Re1+ 20. Kxe1 Bb4+ 21. Bd2 Bxd2+ 22. Kxd2 Qxc6 23. Bd3 Nc5 24. Rhe1 Rd8 25. Re3 Qxg2 26. Rae1 Nxd3 27. cxd3 Qxh2 28. R1e2 Qd6 29. Kc2 Kf7 30. a3 f4 31. Rf3 Qc6+ 0-1

[Event "Titled Tuesday intern op 27th Feb Late"]
[Site "Chess.com INT"]
[Date "2024.02.27"]
[Round "11"]
[White "Koellner, Ruben Gideon"]
[Black "Rasulov, Vugar Ural Oglu"]
[Result "1-0"]
[ECO "B00"]
[WhiteElo "2465"]
[BlackElo "2538"]
[PlyCount "67"]
[EventDate "2024.02.27"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB10_2024"]
[SourceDate "2024.03.06"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.06"]
[SourceQuality "1"]

1. d4 a6 2. Nf3 b5 3. e4 Bb7 4. Nbd2 g6 5. c3 Bg7 6. Bd3 d6 7. 0-0 c5 8. b3 Nf6 9. Bb2 0-0 10. a3 Nc6 11. Qe2 Rc8 12. Rac1 Bh6 13. Rfd1 e5 14. d5 Nb8 15. Ra1 Nbd7 16. a4 c4 17. bxc4 bxa4 18. Rxa4 Nc5 19. Raa1 a5 20. Ba3 Nfd7 21. Bc2 Ba6 22. Nb3 Nxb3 23. Bxb3 Nc5 24. Bxc5 Rxc5 25. Ne1 Qb6 26. Rdb1 Rfc8 27. Nd3 R5c7 28. Qa2 Rb8 29. c5 dxc5 30. Bc4 Qa7 31. Rxb8+ Qxb8 32. Bxa6 c4 33. Bxc4 Qc8 34. Nxe5 1-0

[Event "Titled Tuesday intern op 27th Feb Late"]
[Site "Chess.com INT"]
[Date "2024.02.27"]
[Round "3"]
[White "Koellner, Ruben Gideon"]
[Black "Ribeiro, Gustavo"]
[Result "1-0"]
[ECO "D05"]
[WhiteElo "2465"]
[BlackElo "2250"]
[PlyCount "79"]
[EventDate "2024.02.27"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB10_2024"]
[SourceDate "2024.03.06"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.06"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 b6 3. Nbd2 Bb7 4. e3 e6 5. Bd3 d5 6. Ne5 Nbd7 7. f4 c5 8. c3 Bd6 9. Qf3 Qc7 10. 0-0 g6 11. a4 h5 12. g3 Rf8 13. Qg2 0-0-0 14. a5 Kb8 15. axb6 axb6 16. Nb1 c4 17. Bc2 Ne4 18. Na3 Bxa3 19. Rxa3 Nxe5 20. fxe5 Bc6 21. Bd2 Kb7 22. Qe2 Ra8 23. Rxa8 Rxa8 24. Bxe4 dxe4 25. Qxc4 Qd7 26. Qb4 Bb5 27. c4 Bc6 28. Bc3 Ra4 29. Qf8 Qe8 30. Rxf7+ Ka6 31. Qxe8 Bxe8 32. Re7 Bc6 33. Rxe6 Rxc4 34. Rxg6 Bd5 35. Rd6 Bg8 36. d5 Kb7 37. e6 b5 38. Rd7+ Rc7 39. Rd8 Bh7 40. d6 1-0

[Event "Titled Tuesday intern op 27th Feb Late"]
[Site "Chess.com INT"]
[Date "2024.02.27"]
[Round "10"]
[White "Martin Fuentes, Alberto"]
[Black "Koellner, Ruben Gideon"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "2369"]
[BlackElo "2465"]
[PlyCount "64"]
[EventDate "2024.02.27"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB10_2024"]
[SourceDate "2024.03.06"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.06"]
[SourceQuality "1"]

1. e4 d6 2. Nc3 Nf6 3. d4 e5 4. Bc4 Be7 5. Nf3 Nbd7 6. 0-0 c6 7. a4 h6 8. Be3 Qc7 9. h3 Nf8 10. Qd2 g5 11. Rad1 Ng6 12. b4 g4 13. hxg4 Bxg4 14. Be2 h5 15. b5 h4 16. Ng5 Qc8 17. f3 Bd7 18. Bc4 Rf8 19. dxe5 dxe5 20. f4 Ng4 21. Nxf7 Nxe3 22. Qxe3 Rxf7 23. Bxf7+ Kxf7 24. f5 Nf4 25. Qd2 Be8 26. Ne2 Nxe2+ 27. Qxe2 Bf6 28. Rd6 cxb5 29. Rfd1 Qc4 30. Qh5+ Ke7 31. Re6+ Qxe6 32. fxe6 Bxh5 0-1

[Event "Titled Tuesday intern op 27th Feb Late"]
[Site "Chess.com INT"]
[Date "2024.02.27"]
[Round "8"]
[White "Mendez Fortes, Eduardo Jesus"]
[Black "Koellner, Ruben Gideon"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "2231"]
[BlackElo "2465"]
[PlyCount "164"]
[EventDate "2024.02.27"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB10_2024"]
[SourceDate "2024.03.06"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.06"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. 0-0 c6 7. a4 h6 8. Re1 Qc7 9. a5 Nf8 10. Qd3 Ng6 11. d5 0-0 12. a6 b5 13. Bb3 b4 14. Ne2 cxd5 15. Bxd5 Nxd5 16. Qxd5 Be6 17. Qd3 Rfc8 18. c3 b3 19. Ng3 Bc4 20. Qd1 Qc6 21. Nf5 Bf8 22. h4 Rd8 23. h5 Ne7 24. Ne3 Qxe4 25. Ra4 d5 26. Bd2 Qh7 27. Nxe5 Bb5 28. Ra1 Rab8 29. Qxb3 Bxa6 30. Qa2 Bd3 31. Nxd3 Qxd3 32. Bc1 Nc6 33. Rd1 Qe2 34. Qa6 Qb5 35. Qxb5 Rxb5 36. Ra6 Rc5 37. Nf5 d4 38. cxd4 Rxf5 39. Rxc6 Rxh5 40. Be3 Rhd5 41. Ra1 a5 42. Ra6 Bb4 43. Rc1 R8d7 44. Ra8+ Kh7 45. Kf1 Kg6 46. Ke2 f6 47. Kd3 Rb5 48. Rc2 Bd6 49. Ra6 Bb4 50. g4 Rdb7 51. Bc1 Be7 52. Rc8 Rb3+ 53. Kc2 Rf3 54. Be3 Bb4 55. Kd3 Rd7 56. Ke4 Rh3 57. Rc2 Re7+ 58. Kd3 Rh4 59. f3 Rh3 60. Rf2 Rh1 61. f4 Rh3 62. Re2 h5 63. f5+ Kh7 64. gxh5 Rxh5 65. Bd2 Rxe2 66. Kxe2 Rh2+ 67. Ke3 Bxd2+ 68. Kd3 Bb4 69. d5 Rxb2 70. Rb6 Rd2+ 71. Ke4 Kh6 72. Rb7 Re2+ 73. Kd4 Re5 74. Ra7 Rxf5 75. Kc4 Rf4+ 76. Kb5 Rd4 77. Kc6 f5 78. Rf7 g6 79. Kd7 Rxd5+ 80. Ke6 Rd6+ 81. Ke5 Rc6 82. Rf8 Bxf8 0-1

[Event "Titled Tuesday intern op 27th Feb Late"]
[Site "Chess.com INT"]
[Date "2024.02.27"]
[Round "2"]
[White "Ronka, Erik"]
[Black "Koellner, Ruben Gideon"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "2300"]
[BlackElo "2465"]
[PlyCount "98"]
[EventDate "2024.02.27"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB10_2024"]
[SourceDate "2024.03.06"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.06"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Rg1 c6 6. g4 h6 7. Be3 Be7 8. Qd2 Qc7 9. h4 Nf8 10. g5 hxg5 11. hxg5 Ng4 12. 0-0-0 Nxe3 13. fxe3 Ng6 14. Bc4 Be6 15. Bxe6 fxe6 16. Qg2 0-0-0 17. Qg4 Nf8 18. Rh1 Rxh1 19. Rxh1 Kb8 20. Rh8 exd4 21. exd4 d5 22. Rg8 Bb4 23. Nd1 Qf7 24. Rh8 Bd6 25. e5 Be7 26. g6 Nxg6 27. Rxd8+ Bxd8 28. Nd2 Qf5 29. Qg2 Bg5 30. c3 Nf4 31. Qh2 Nd3+ 32. Kc2 Ne1+ 33. Kb3 Qc2+ 34. Ka3 Qxd2 35. Qh8+ Kc7 36. Qxg7+ Kb6 37. Qf8 Nc2+ 38. Kb3 Qxd1 39. Qc5+ Ka6 40. Ka4 Nxd4+ 41. Ka3 Nb5+ 42. Kb4 Qg4+ 43. Kb3 Qc4+ 44. Qxc4 dxc4+ 45. Kxc4 Nc7 46. Kc5 Be7+ 47. Kc4 b5+ 48. Kd4 c5+ 49. Ke4 Kb6 0-1

[Event "Baden-Baden op"]
[Site "Baden-Baden"]
[Date "2024.02.13"]
[Round "8"]
[White "Cernov, Henrik"]
[Black "Koellner, Ruben Gideon"]
[Result "0-1"]
[ECO "C52"]
[WhiteElo "2049"]
[BlackElo "2465"]
[PlyCount "55"]
[EventDate "2024.02.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB08_2024"]
[SourceDate "2024.02.21"]
[SourceVersion "1"]
[SourceVersionDate "2024.02.21"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bxb4 5. c3 Ba5 6. d4 Qe7 7. 0-0 Bb6 8. Bg5 Nf6 9. Bb5 h6 10. Bxf6 Qxf6 11. Bxc6 bxc6 12. Nxe5 0-0 13. Nd2 c5 14. Ndc4 d6 15. Nf3 Bg4 16. a4 cxd4 17. Nxb6 axb6 18. cxd4 Bxf3 19. gxf3 Ra5 20. d5 Rfa8 21. Ra3 b5 22. Qa1 Qg5+ 23. Kh1 Rxa4 24. Rxa4 Rxa4 25. Qc3 Rc4 26. Qb2 Qf4 27. Kg2 b4 28. Ra1 0-1

[Event "Baden-Baden op"]
[Site "Baden-Baden"]
[Date "2024.02.13"]
[Round "9"]
[White "Koellner, Ruben Gideon"]
[Black "Knudsen, Simon"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2465"]
[BlackElo "2231"]
[PlyCount "89"]
[EventDate "2024.02.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB08_2024"]
[SourceDate "2024.02.21"]
[SourceVersion "1"]
[SourceVersionDate "2024.02.21"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 e6 4. e3 c5 5. c3 Nc6 6. Nbd2 cxd4 7. exd4 Nh5 8. Be3 Bd6 9. Bd3 Nf4 10. Bxf4 Bxf4 11. 0-0 0-0 12. g3 Bh6 13. h4 Rb8 14. a4 g6 15. Re1 Qd6 16. a5 Bd7 17. a6 b6 18. Nb1 b5 19. b4 Rb6 20. Nbd2 Nb8 21. Nb3 Rxa6 22. Nc5 Rxa1 23. Qxa1 a6 24. Ne5 Bc8 25. h5 Nc6 26. Nxc6 Qxc6 27. Re2 Kg7 28. Ra2 gxh5 29. Qd1 e5 30. dxe5 h4 31. Qh5 hxg3 32. f4 f5 33. Qh4 d4 34. Rg2 dxc3 35. e6 Rf6 36. Rxg3+ Rg6 37. Bxf5 Qd6 38. Bxg6 hxg6 39. Rd3 c2 40. Rxd6 c1Q+ 41. Kg2 Bxf4 42. Rd8 Qc2+ 43. Kf3 Qc3+ 44. Kxf4 Qxb4+ 45. Ne4 1-0

[Event "Baden-Baden op"]
[Site "Baden-Baden"]
[Date "2024.02.12"]
[Round "6"]
[White "Kocharin, Timur"]
[Black "Koellner, Ruben Gideon"]
[Result "1/2-1/2"]
[ECO "C50"]
[WhiteElo "2216"]
[BlackElo "2465"]
[PlyCount "216"]
[EventDate "2024.02.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB08_2024"]
[SourceDate "2024.02.21"]
[SourceVersion "1"]
[SourceVersionDate "2024.02.21"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 Nf6 5. Nc3 0-0 6. Bg5 h6 7. Bh4 Be7 8. 0-0 d6 9. h3 Na5 10. Bxf6 Bxf6 11. Qd2 c6 12. a4 Nxc4 13. dxc4 Be7 14. b3 f5 15. exf5 Bxf5 16. Rad1 Qe8 17. c5 Rd8 18. cxd6 Bxd6 19. Qe2 e4 20. Qc4+ Qf7 21. Qxf7+ Kxf7 22. Nd2 Bb4 23. Ncb1 b5 24. g4 Bg6 25. c3 Be7 26. Rde1 bxa4 27. bxa4 Rd3 28. Nxe4 Rfd8 29. f3 Kf8 30. Re2 Rb8 31. Nbd2 Rb2 32. Rff2 Bh4 33. Rg2 Ra2 34. Nc4 Rxa4 35. Ne5 Bxe4 36. Rxe4 Rxe4 37. fxe4 Rxh3 38. Nxc6 Rxc3 39. Nxa7 Rc5 40. Rb2 Bf6 41. Rb7 Rg5 42. Kf2 Rxg4 43. Kf3 Rg1 44. Nc8 Rf1+ 45. Ke3 Rd1 46. Nb6 Bg5+ 47. Kf3 Rf1+ 48. Ke2 Ra1 49. e5 Kg8 50. Nd7 Ra3 51. Kf2 Bh4+ 52. Ke2 Bg5 53. Kf2 Kf7 54. Nf6+ Ke6 55. Rxg7 Kxe5 56. Nd7+ Kf5 57. Rf7+ Ke6 58. Rh7 Be7 59. Nb6 Bg5 60. Nd7 Rc3 61. Nf8+ Kf5 62. Rb7 Rc6 63. Nd7 Rc2+ 64. Kf3 Rc3+ 65. Kf2 Be3+ 66. Kg2 Ke6 67. Nf8+ Kf6 68. Nd7+ Ke6 69. Nf8+ Kd5 70. Ng6 Bg5 71. Ne7+ Ke5 72. Rb5+ Ke6 73. Nd5 Ra3 74. Nb4 Rb3 75. Nc2 Rd3 76. Ne1 Ra3 77. Nf3 Be3 78. Kg3 Kf6 79. Rd5 Bg5 80. Kg4 Ra4+ 81. Rd4 Ra1 82. Nxg5 Rg1+ 83. Kh3 hxg5 84. Kh2 Ra1 85. Rd2 Kf5 86. Kg2 Ra4 87. Rb2 Kg4 88. Rc2 Kh4 89. Rb2 Ra3 90. Rb4+ g4 91. Rb2 Rg3+ 92. Kh2 Re3 93. Kg2 Re4 94. Ra2 Rb4 95. Rc2 Kg5 96. Rc8 Rb2+ 97. Kg3 Rb3+ 98. Kg2 Rb5 99. Rg8+ Kf4 100. Rf8+ Rf5 101. Rxf5+ Kxf5 102. Kg3 Kg5 103. Kg2 Kf4 104. Kf2 g3+ 105. Kg2 Kg4 106. Kg1 Kf3 107. Kh1 g2+ 108. Kg1 Kg3 1/2-1/2

[Event "Baden-Baden op"]
[Site "Baden-Baden"]
[Date "2024.02.12"]
[Round "7"]
[White "Koellner, Ruben Gideon"]
[Black "Nied, Pascal"]
[Result "1/2-1/2"]
[ECO "D04"]
[WhiteElo "2465"]
[BlackElo "2099"]
[PlyCount "141"]
[EventDate "2024.02.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB08_2024"]
[SourceDate "2024.02.21"]
[SourceVersion "1"]
[SourceVersionDate "2024.02.21"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. e3 c5 4. Nbd2 cxd4 5. exd4 Qc7 6. c3 Nc6 7. h3 Bf5 8. Nh4 Bd7 9. Bd3 e5 10. dxe5 Qxe5+ 11. Be2 Bc5 12. Nhf3 Qc7 13. Nb3 Bd6 14. 0-0 h6 15. Nbd4 a6 16. Nxc6 bxc6 17. Bxa6 0-0 18. Bd3 c5 19. Re1 Rfb8 20. Nh4 Bh2+ 21. Kh1 Bf4 22. Nf5 Be6 23. Bxf4 Qxf4 24. Ne7+ Kf8 25. Rxe6 Rxb2 26. Re2 Rxe2 27. Qxe2 Re8 28. Nxd5 Nxd5 29. Qf3 Qxf3 30. gxf3 Nxc3 31. a4 Rd8 32. Bf1 Ke7 33. a5 Kd6 34. a6 Kc6 35. a7 Ra8 36. Bd3 c4 37. Bxc4 Nb5 38. Bxf7 Rxa7 39. Be8+ Kd5 40. Rd1+ Nd4 41. Kg2 Re7 42. Bc6+ Kc5 43. Be4 Ra7 44. Kg3 Ra2 45. Kf4 Ra3 46. h4 Ra7 47. Kg4 Re7 48. Kh5 Rf7 49. Kg6 Re7 50. Rb1 Ne6 51. Rb7 Nf8+ 52. Kf5 Rxb7 53. Bxb7 Kd6 54. h5 Ke7 55. Bd5 Kd6 56. Bf7 Ke7 57. Bb3 Kd6 58. f4 Ke7 59. Ba4 Kd6 60. Bb5 Ke7 61. Ke5 Nh7 62. Be2 Nf8 63. Bd1 Nd7+ 64. Kf5 Nf8 65. Ba4 Kd6 66. Bb5 Ke7 67. Ke5 Nh7 68. Bd3 Nf8 69. Bf5 Kf7 70. Bd3 Ke7 71. Bb5 1/2-1/2

[Event "Baden-Baden op"]
[Site "Baden-Baden"]
[Date "2024.02.11"]
[Round "5"]
[White "Koellner, Ruben Gideon"]
[Black "Hartmann, Martin"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "2465"]
[BlackElo "2167"]
[PlyCount "194"]
[EventDate "2024.02.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB08_2024"]
[SourceDate "2024.02.21"]
[SourceVersion "1"]
[SourceVersionDate "2024.02.21"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 d5 3. Nd2 c5 4. dxc5 e6 5. e4 Bxc5 6. e5 Qb6 7. exf6 Bxf2+ 8. Ke2 gxf6 9. Nh3 Bd4 10. c3 fxg5 11. cxd4 Qxd4 12. Qc2 Nc6 13. Qc3 h6 14. Nf2 Bd7 15. Nf3 Qxc3 16. bxc3 Rc8 17. Kd2 Na5 18. h4 Ke7 19. hxg5 hxg5 20. Rxh8 Rxh8 21. Nxg5 Rg8 22. Nf3 f6 23. Rb1 b6 24. Rb4 e5 25. Nd1 Nb7 26. Ne3 Be6 27. Rh4 Rg7 28. Rh8 Nc5 29. Nh4 Ne4+ 30. Kc2 Ng3 31. Bb5 Kd6 32. Kb2 Kc5 33. Ba6 d4 34. cxd4+ Kxd4 35. Nc2+ Ke4 36. Rh6 Nf5 37. Rxf6 Nxh4 38. Rxe6 Nxg2 39. Re8 Nf4 40. Nb4 Rc7 41. Nc6 Ng6 42. Rc8 Rxc6 43. Bb7 Ne7 44. Re8 Kd4 45. Rxe7 Rh6 46. Rd7+ Kc4 47. Bd5+ Kc5 48. Bb3 Rh2+ 49. Ka3 a5 50. Rd5+ Kc6 51. Rxe5 b5 52. Bf7 Rh3+ 53. Kb2 Rh2+ 54. Kb1 Rh1+ 55. Kc2 Rh2+ 56. Kd3 Rh3+ 57. Ke4 Rh4+ 58. Kf5 Rb4 59. Be8+ Kb6 60. Re2 a4 61. Ke5 Rg4 62. Bd7 Rg7 63. Kd6 Rg1 64. Be6 Rd1+ 65. Bd5 Rg1 66. Re8 Rg6+ 67. Be6 Rh6 68. Rb8+ Ka5 69. a3 Rg6 70. Kd5 Rg3 71. Bd7 Rxa3 72. Rxb5+ Ka6 73. Rb4 Ka5 74. Rb5+ Ka6 75. Rb8 Ka5 76. Kc4 Ra1 77. Rb5+ Ka6 78. Rb8 Ka5 79. Bc6 Rc1+ 80. Kd5 Ra1 81. Kd6 Rd1+ 82. Kc7 Ra1 83. Rb5+ Ka6 84. Rh5 Rc1 85. Rh4 Ra1 86. Rh5 Rc1 87. Rh4 Ra1 88. Rb4 Ka5 89. Rb5+ Ka6 90. Rc5 Rb1 91. Bd5 Rb4 92. Bf3 Rb2 93. Bc6 Rb4 94. Bg2 Rb1 95. Rf5 Rc1+ 96. Bc6 Rc4 97. Rh5 Rc1 1/2-1/2

[Event "Baden-Baden op"]
[Site "Baden-Baden"]
[Date "2024.02.11"]
[Round "4"]
[White "Metzinger, Hannes"]
[Black "Koellner, Ruben Gideon"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "2002"]
[BlackElo "2465"]
[PlyCount "100"]
[EventDate "2024.02.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB08_2024"]
[SourceDate "2024.02.21"]
[SourceVersion "1"]
[SourceVersionDate "2024.02.21"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. dxe5 dxe5 5. Qxd8+ Kxd8 6. Bc4 Ke8 7. f4 Bb4 8. Bd3 Nc6 9. Nf3 a6 10. fxe5 Nd7 11. Bf4 Nf8 12. 0-0-0 Bxc3 13. bxc3 Ng6 14. Bg3 Be6 15. Nd4 Ncxe5 16. Nxe6 fxe6 17. Be2 h5 18. h4 Ke7 19. Rd4 Raf8 20. Rhd1 Nf4 21. Bf1 Rh6 22. Be1 c5 23. R4d2 Rg6 24. g3 Nd5 25. exd5 Rxf1 26. Bf2 Rxd1+ 27. Rxd1 b6 28. Be3 exd5 29. Bf4 Nc4 30. Rxd5 Re6 31. Bg5+ Kf7 32. Rd7+ Kg6 33. Kd1 Rd6+ 34. Rxd6+ Nxd6 35. Bf4 Ne4 36. c4 Kf5 37. Bc7 Kg4 38. Bxb6 Kxg3 39. Bd8 Kf3 40. Be7 Ke3 41. Bf8 g6 42. Bh6+ Kf3 43. Bf8 g5 44. hxg5 h4 45. g6 h3 46. Bd6 Nxd6 47. g7 h2 48. g8Q h1Q+ 49. Kd2 Ne4+ 50. Kd3 Qd1# 0-1

[Event "Baden-Baden op"]
[Site "Baden-Baden"]
[Date "2024.02.10"]
[Round "3"]
[White "Koellner, Ruben Gideon"]
[Black "Zhang, Xiao"]
[Result "0-1"]
[ECO "D05"]
[WhiteElo "2465"]
[BlackElo "2189"]
[PlyCount "148"]
[EventDate "2024.02.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB08_2024"]
[SourceDate "2024.02.21"]
[SourceVersion "1"]
[SourceVersionDate "2024.02.21"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. e3 c5 4. Nbd2 e6 5. b3 Nbd7 6. Bb2 cxd4 7. exd4 Bd6 8. Bd3 0-0 9. 0-0 a5 10. a3 b6 11. Qe2 Bb7 12. Ne5 Qe7 13. f4 g6 14. Rf3 Nh5 15. g4 Ng7 16. Bb5 Nf6 17. Rf2 Rfc8 18. Bd3 Rc7 19. g5 Nfh5 20. Nf1 f6 21. gxf6 Qxf6 22. Qg4 Rf8 23. Ne3 Nf5 24. Nxf5 exf5 25. Qh3 Be7 26. Raf1 Qh4 27. Qxh4 Bxh4 28. Re2 Bf6 29. a4 Bg7 30. Ba3 Rd8 31. Rg2 Bh6 32. Rgf2 Nf6 33. h4 Nh5 34. Kg2 Kg7 35. Bc1 Kf8 36. Kf3 Bg7 37. Rg2 Bc8 38. Ba3+ Kg8 39. Ke3 Bxe5 40. dxe5 d4+ 41. Kd2 Be6 42. Bd6 Rc3 43. Rg5 Rdc8 44. Ba3 Rd8 45. Bb2 Rc7 46. Be2 d3 47. Bxd3 Rcd7 48. Ke3 Kf7 49. Ba3 Bxb3 50. Bd6 Be6 51. Bb5 Ra7 52. Rd1 Rc8 53. Rg2 Bc4 54. Rd4 Bxb5 55. axb5 Rc3+ 56. Kd2 Rf3 57. Ke2 Rh3 58. Kd2 Rd7 59. c4 Rxh4 60. Rf2 Ng3 61. Kc2 Ne4 62. Rf3 Ke6 63. Kd3 Nxd6 64. exd6 Rxd6 65. c5 bxc5 66. Rxd6+ Kxd6 67. Kc4 Rh1 68. Rd3+ Kc7 69. Kxc5 Rc1+ 70. Kd5 Kb6 71. Rh3 Rc7 72. Rb3 a4 73. Rb1 Rc5+ 74. Kd4 Rxb5 0-1

[Event "Baden-Baden op"]
[Site "Baden-Baden"]
[Date "2024.02.10"]
[Round "2"]
[White "Menzel, Maximilian"]
[Black "Koellner, Ruben Gideon"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "2103"]
[BlackElo "2465"]
[PlyCount "74"]
[EventDate "2024.02.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB08_2024"]
[SourceDate "2024.02.21"]
[SourceVersion "1"]
[SourceVersionDate "2024.02.21"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. g3 e6 4. Bg2 Nbd7 5. 0-0 b5 6. a4 b4 7. c4 bxc3 8. Nxc3 a5 9. Ne5 Nxe5 10. dxe5 Nd7 11. e4 d4 12. Qxd4 Bc5 13. Qd1 Ba6 14. Nb5 0-0 15. Bg5 Qxg5 16. Qxd7 Qxe5 17. Rad1 Rab8 18. Kh1 Bxb5 19. axb5 Qxb2 20. Rb1 Qe5 21. f4 Qd6 22. Rfd1 Qb6 23. e5 a4 24. f5 exf5 25. Bc6 a3 26. Qxf5 Bd4 27. e6 fxe6 28. Qxe6+ Kh8 29. Rb4 Rbd8 30. Ra4 Qc5 31. Qe4 Bf6 32. Rxd8 Rxd8 33. Ra8 Rxa8 34. Bxa8 Qxb5 35. Kg2 a2 36. Bc6 Qe5 37. Qb4 Qb2+ 0-1

[Event "Baden-Baden op"]
[Site "Baden-Baden"]
[Date "2024.02.09"]
[Round "1"]
[White "Koellner, Ruben Gideon"]
[Black "Goldinov, Daniel"]
[Result "1-0"]
[ECO "D03"]
[WhiteElo "2465"]
[BlackElo "1848"]
[PlyCount "65"]
[EventDate "2024.02.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB08_2024"]
[SourceDate "2024.02.21"]
[SourceVersion "1"]
[SourceVersionDate "2024.02.21"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 d5 3. Nd2 e6 4. e3 c5 5. c3 Nc6 6. Ngf3 h6 7. Bh4 Be7 8. Bd3 0-0 9. 0-0 cxd4 10. exd4 Bd7 11. Qe2 Rc8 12. Ne5 Nxe5 13. dxe5 Ne8 14. Bxe7 Qxe7 15. f4 Nc7 16. Nb3 a6 17. Nd4 Qc5 18. a4 b5 19. Rf3 bxa4 20. Rg3 Rfe8 21. Qg4 Qf8 22. f5 exf5 23. Bxf5 Ne6 24. Rf1 Rc4 25. Qh5 g5 26. Bxe6 Bxe6 27. Rf6 Rxd4 28. cxd4 Qb4 29. h4 Qxd4+ 30. Kh2 Rc8 31. Rxh6 Qxe5 32. Qxg5+ Qxg5 33. Rxg5+ 1-0

[Event "Titled Tuesday intern op 06th Feb Early"]
[Site "Chess.com INT"]
[Date "2024.02.06"]
[Round "3"]
[White "Aadit, Bhatia"]
[Black "Koellner, Ruben Gideon"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "2169"]
[BlackElo "2465"]
[PlyCount "54"]
[EventDate "2024.02.06"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB07_2024"]
[SourceDate "2024.02.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.02.14"]
[SourceQuality "1"]

1. d4 d6 2. e4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. a4 c6 7. 0-0 h6 8. Re1 Qc7 9. Bf1 Nf8 10. h3 g5 11. dxe5 dxe5 12. Nd2 Ng6 13. Nc4 g4 14. hxg4 Bxg4 15. f3 Be6 16. b3 h5 17. Ba3 h4 18. Bxe7 Kxe7 19. Qd2 Nf4 20. Rad1 Rad8 21. Qe3 b6 22. a5 Bxc4 23. Bxc4 Rdg8 24. b4 Rxg2+ 25. Kf1 N6h5 26. Ne2 Ng3+ 27. Nxg3 hxg3 0-1

[Event "Titled Tuesday intern op 06th Feb Late"]
[Site "Chess.com INT"]
[Date "2024.02.06"]
[Round "3"]
[White "Deac, Bogdan Daniel"]
[Black "Koellner, Ruben Gideon"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "2690"]
[BlackElo "2465"]
[PlyCount "69"]
[EventDate "2024.02.06"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB07_2024"]
[SourceDate "2024.02.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.02.14"]
[SourceQuality "1"]

1. d4 d6 2. Nf3 Nf6 3. Nc3 Nbd7 4. e4 e5 5. Rg1 c6 6. a4 h6 7. g4 exd4 8. Nxd4 Ne5 9. h3 d5 10. exd5 Nxd5 11. Qe2 Bd6 12. Nxd5 cxd5 13. f4 0-0 14. fxe5 Bxe5 15. Qxe5 Re8 16. Qxe8+ Qxe8+ 17. Kf2 Qe5 18. Be3 Bd7 19. Rg3 Re8 20. Bd3 a6 21. c3 Qf6+ 22. Rf3 Qh4+ 23. Kg2 g6 24. Raf1 Rf8 25. Bxg6 Kg7 26. Nf5+ Bxf5 27. Bxf5 f6 28. Bd4 Qg5 29. Bd3 Qd2+ 30. R1f2 Qc1 31. Bxf6+ Kg8 32. Bg5 hxg5 33. Rxf8+ Kg7 34. R2f7+ Kh6 35. Rh8# 1-0

[Event "Titled Tuesday intern op 06th Feb Early"]
[Site "Chess.com INT"]
[Date "2024.02.06"]
[Round "10"]
[White "Hayrapetyan, Hovik"]
[Black "Koellner, Ruben Gideon"]
[Result "1/2-1/2"]
[ECO "E61"]
[WhiteElo "2432"]
[BlackElo "2465"]
[PlyCount "155"]
[EventDate "2024.02.06"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB07_2024"]
[SourceDate "2024.02.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.02.14"]
[SourceQuality "1"]

1. d4 d6 2. Nf3 Nf6 3. c4 g6 4. Nc3 Bf5 5. g3 Ne4 6. Bg2 Nxc3 7. bxc3 Be4 8. 0-0 Bg7 9. Bh3 Bxf3 10. exf3 0-0 11. f4 c5 12. Rb1 Qc7 13. f5 Nc6 14. fxg6 hxg6 15. Be3 b6 16. Qg4 Na5 17. d5 Qb7 18. Rfc1 Qa6 19. Bf1 Qc8 20. Qe4 Re8 21. h4 e6 22. dxe6 Qxe6 23. Qxe6 fxe6 24. Rc2 Rad8 25. Rd1 Kf7 26. Rcd2 Be5 27. Bg5 Rd7 28. f4 Bxc3 29. Rxd6 Rxd6 30. Rxd6 Bf6 31. Rd7+ Re7 32. Rxe7+ Kxe7 33. Kf2 Kf7 34. Ke3 Bd4+ 35. Ke4 Nc6 36. g4 Bf6 37. h5 gxh5 38. gxh5 Nd4 39. h6 Kg6 40. Bh3 Bh8 41. a4 a6 42. Bf1 Nf5 43. Bd3 Nxh6 44. Bd8 Nf5 45. Bxb6 Bd4 46. a5 Kf6 47. Bc2 Nd6+ 48. Kd3 e5 49. fxe5+ Kxe5 50. Ba4 Ke6 51. Bc6 Ke7 52. Bc7 Ke6 53. Bb6 Ke7 54. Bd5 Kd7 55. Bf3 Ke6 56. Bg4+ Ke5 57. Bc7 Bb2 58. Bc8 Ba3 59. Bxa6 Ke6 60. Bb5 Nxb5 61. cxb5 Kd5 62. a6 c4+ 63. Kc3 Bc5 64. b6 Kc6 65. a7 Kb7 66. Kxc4 Bxb6 67. Bxb6 Ka8 68. Kb5 Kb7 69. Bc5 Ka8 70. Kc4 Kb7 71. Kd5 Ka8 72. Bd4 Kb7 73. Kc5 Ka8 74. Kb5 Kb7 75. Ka5 Ka8 76. Kb5 Kb7 77. Ka5 Ka8 78. Kb5 1/2-1/2

[Event "Titled Tuesday intern op 06th Feb Late"]
[Site "Chess.com INT"]
[Date "2024.02.06"]
[Round "5"]
[White "Ismayil, Malak"]
[Black "Koellner, Ruben Gideon"]
[Result "1/2-1/2"]
[ECO "B07"]
[WhiteElo "2200"]
[BlackElo "2465"]
[PlyCount "156"]
[EventDate "2024.02.06"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB07_2024"]
[SourceDate "2024.02.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.02.14"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. dxe5 dxe5 5. Qxd8+ Kxd8 6. Bg5 Be6 7. f4 exf4 8. e5 h6 9. Bxf4 Nh5 10. Be3 g5 11. Be2 Nf4 12. Bf3 c6 13. Bxf4 gxf4 14. Nge2 Nd7 15. Nxf4 Nxe5 16. 0-0-0+ Kc7 17. Nxe6+ fxe6 18. Rde1 Nxf3 19. gxf3 Re8 20. Rhg1 Rh7 21. Rg6 Rf7 22. Rgxe6 Rxe6 23. Rxe6 Rxf3 24. Ne4 Rf1+ 25. Kd2 Rh1 26. Rf6 Rxh2+ 27. Kd3 Rh3+ 28. Kd2 Be7 29. Rf7 Kd8 30. Rh7 h5 31. a4 h4 32. b3 Rh2+ 33. Kd3 Rg2 34. Nd2 Rg3+ 35. Ke4 Rc3 36. Nf3 Rxc2 37. Nd4 Rc1 38. Nf5 Re1+ 39. Kf4 Rf1+ 40. Ke4 Bg5 41. Rxb7 Re1+ 42. Kf3 a5 43. Rh7 Rb1 44. Kg4 Bd2 45. Nd4 c5 46. Nc6+ Ke8 47. Re7+ Kf8 48. Rd7 Bb4 49. Rd3 Be1 50. Ne5 Rc1 51. Nf3 Bg3 52. Nxh4 Bxh4 53. Kxh4 Ke7 54. Kg3 Rf1 55. Kg2 Rf4 56. Kg3 Rf5 57. Kg4 Rf1 58. Kg3 Ke6 59. Kg2 Rf4 60. Kg3 Rf5 61. Rd8 Rf1 62. Ra8 Rb1 63. Rxa5 Rxb3+ 64. Kf4 Kd5 65. Ra8 Kd4 66. a5 Ra3 67. a6 c4 68. a7 Kc3 69. Ke5 Ra5+ 70. Kd6 Kd3 71. Kc6 Kc2 72. Kb6 Ra1 73. Rc8 c3 74. a8Q Rxa8 75. Rxa8 Kb2 76. Rc8 c2 77. Ka5 c1Q 78. Rxc1 Kxc1 1/2-1/2

[Event "Titled Tuesday intern op 06th Feb Early"]
[Site "Chess.com INT"]
[Date "2024.02.06"]
[Round "8"]
[White "Kilic, Eray"]
[Black "Koellner, Ruben Gideon"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "2439"]
[BlackElo "2465"]
[PlyCount "175"]
[EventDate "2024.02.06"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB07_2024"]
[SourceDate "2024.02.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.02.14"]
[SourceQuality "1"]

1. d4 d6 2. e4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Rg1 c6 6. g4 h6 7. Be3 b5 8. a3 Be7 9. d5 Bb7 10. g5 hxg5 11. Nxg5 cxd5 12. exd5 a6 13. Qf3 Rc8 14. Qg3 Nh5 15. Qg4 Ndf6 16. Qf5 g6 17. Qd3 Rxc3 18. bxc3 Bxd5 19. a4 Bc4 20. Qd2 Qc8 21. axb5 axb5 22. Bxc4 bxc4 23. Qe2 0-0 24. Ra7 Re8 25. Qf3 d5 26. Kf1 Qb8 27. Kg2 d4 28. Rb7 Qd8 29. cxd4 exd4 30. Rd1 d3 31. cxd3 cxd3 32. Rb3 Qd5 33. Rbxd3 Qxf3+ 34. Kxf3 Nh7 35. Nxh7 Kxh7 36. Rd7 Kg7 37. Rb7 Nf6 38. Bd4 Kf8 39. Rxe7 Kxe7 40. Bb2 Ke6 41. Ra1 Nh5 42. Ra6+ Kd7 43. Ra7+ Ke6 44. Ra5 Rb8 45. Be5 Rb3+ 46. Kg2 Rd3 47. Bb8 Rd5 48. Ra6+ Kf5 49. Ra7 f6 50. Ra4 g5 51. Rb4 Kg6 52. Bc7 Rc5 53. Rb7 Rd5 54. Bb8 Rc5 55. Rd7 Rc4 56. h3 Ng7 57. Rd6 Nf5 58. Rb6 Nh4+ 59. Kh2 Rc2 60. Bg3 Nf3+ 61. Kg2 Ne1+ 62. Kf1 Nf3 63. Kg2 Ne1+ 64. Kf1 Nf3 65. Ra6 Kf5 66. Ra5+ Ne5 67. Kg2 Re2 68. h4 gxh4 69. Bxh4 Rc2 70. Ra6 Rc6 71. Ra5 Ke6 72. Bg3 Kf5 73. f4 Rc2+ 74. Kh3 Re2 75. fxe5 fxe5 76. Ra8 Ke4 77. Kg4 Kd3 78. Rd8+ Ke4 79. Bxe5 Rg2+ 80. Bg3 Ra2 81. Re8+ Kd5 82. Kf5 Ra3 83. Bf4 Ra1 84. Rd8+ Kc4 85. Rd2 Kc3 86. Rd7 Kc4 87. Ke4 Ra6 88. Rc7+ 1-0

[Event "Titled Tuesday intern op 06th Feb Early"]
[Site "Chess.com INT"]
[Date "2024.02.06"]
[Round "6"]
[White "Koellner, Ruben Gideon"]
[Black "Benen, Samson"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2465"]
[BlackElo "2326"]
[PlyCount "35"]
[EventDate "2024.02.06"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB07_2024"]
[SourceDate "2024.02.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.02.14"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Nbd2 Bg7 4. e4 d6 5. Bc4 0-0 6. 0-0 c6 7. Bb3 Qc7 8. Qe2 e5 9. dxe5 dxe5 10. Rd1 Nbd7 11. c3 Nc5 12. Bc2 h6 13. a4 a5 14. b3 Rd8 15. Ba3 Ne6 16. Nc4 Nf4 17. Qe3 Ng4 18. Qb6 1-0

[Event "Titled Tuesday intern op 06th Feb Late"]
[Site "Chess.com INT"]
[Date "2024.02.06"]
[Round "6"]
[White "Koellner, Ruben Gideon"]
[Black "Bettalli, Francesco"]
[Result "0-1"]
[ECO "D05"]
[WhiteElo "2465"]
[BlackElo "2300"]
[PlyCount "136"]
[EventDate "2024.02.06"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB07_2024"]
[SourceDate "2024.02.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.02.14"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 c5 3. e3 d5 4. c3 Nc6 5. Nbd2 e6 6. Bd3 Bd6 7. 0-0 0-0 8. dxc5 Bxc5 9. b4 Be7 10. Bb2 a6 11. a3 e5 12. e4 Bg4 13. h3 Bh5 14. exd5 Qxd5 15. Qc2 Rad8 16. Bc4 Qd7 17. Rfe1 Bg6 18. Qb3 b5 19. Bf1 e4 20. Nd4 Nxd4 21. cxd4 Rfe8 22. a4 bxa4 23. Rxa4 Rb8 24. Bxa6 Nd5 25. b5 Bg5 26. Nc4 f6 27. Ne3 Bf7 28. Nxd5 Bxd5 29. Qg3 Rxb5 30. Bxb5 Qxb5 31. Qa3 Bd2 32. Rd1 e3 33. fxe3 Qe2 34. Rxd2 Qxd2 35. e4 Bxe4 36. Qb3+ Kh8 37. Qg3 Qxb2 38. Ra7 Qxd4+ 39. Qf2 Qxf2+ 40. Kxf2 h5 41. h4 Kh7 42. Ra5 Kh6 43. g3 Re5 44. Ra6 Bf5 45. Kf3 Bg4+ 46. Kf4 Rf5+ 47. Ke4 Rf3 48. Ra8 Rxg3 49. Kf4 Rf3+ 50. Ke4 Kg6 51. Ra5 Rh3 52. Kf4 Rxh4 53. Kg3 Rh3+ 54. Kf4 Rf3+ 55. Ke4 h4 56. Ra1 h3 57. Rg1 f5+ 58. Ke5 h2 59. Rh1 Rh3 60. Kf4 Bf3 61. Rg1+ hxg1Q 62. Ke5 Qe3+ 63. Kd6 Qd4+ 64. Kc7 Qc5+ 65. Kb8 Qb6+ 66. Kc8 Qc6+ 67. Kd8 Qd6+ 68. Ke8 Rh8# 0-1

[Event "Titled Tuesday intern op 06th Feb Late"]
[Site "Chess.com INT"]
[Date "2024.02.06"]
[Round "4"]
[White "Koellner, Ruben Gideon"]
[Black "Carnicelli, Valerio"]
[Result "1/2-1/2"]
[ECO "D05"]
[WhiteElo "2465"]
[BlackElo "2427"]
[PlyCount "154"]
[EventDate "2024.02.06"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB07_2024"]
[SourceDate "2024.02.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.02.14"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 c5 3. e3 e6 4. Nbd2 d5 5. c3 Nc6 6. Bd3 Bd6 7. 0-0 0-0 8. dxc5 Bxc5 9. b4 Bd6 10. Bb2 a5 11. a3 h6 12. e4 Re8 13. Qe2 Qc7 14. Rad1 Ne5 15. Nxe5 Bxe5 16. Nf3 dxe4 17. Bxe4 Nxe4 18. Qxe4 Bf6 19. b5 a4 20. Qb4 b6 21. Qd6 Ra7 22. Qxc7 Rxc7 23. Rd6 Rb7 24. Rfd1 Be7 25. R6d4 Ra7 26. c4 Bc5 27. Rd8 Rf8 28. Rxf8+ Bxf8 29. Rd8 Ra8 30. Ne5 Bb7 31. Rxa8 Bxa8 32. Nd7 Be4 33. Nxb6 Bd3 34. h3 f6 35. Nxa4 Bxc4 36. b6 Bd5 37. Nc3 Bc6 38. a4 Bb4 39. Kf1 Ba5 40. Nb5 Bxb6 41. f3 e5 42. Ke2 Kf7 43. Kd3 Ke6 44. Kc4 h5 45. Bc3 h4 46. a5 Bd8 47. a6 Bb6 48. Bb4 g5 49. Bc5 Bxc5 50. Kxc5 Kd7 51. Nc3 f5 52. Nd5 e4 53. fxe4 fxe4 54. Nb4 Ba8 55. Kd4 Kc7 56. Na2 Kb6 57. Nc3 e3 58. Kxe3 Bxg2 59. Ne4 g4 60. hxg4 h3 61. Ng3 h2 62. g5 h1Q 63. Nxh1 Bxh1 64. Kd4 Bf3 65. g6 Bh5 66. g7 Bf7 67. a7 Kxa7 68. Ke5 Bg8 69. Kd6 Kb6 70. Ke7 Kc7 71. Kf8 Be6 72. Ke7 Bd5 73. Kf6 Bc4 74. Ke7 Kc8 75. Ke8 Kc7 76. Kf8 Kd7 77. g8Q Bxg8 1/2-1/2

[Event "Titled Tuesday intern op 06th Feb Early"]
[Site "Chess.com INT"]
[Date "2024.02.06"]
[Round "2"]
[White "Koellner, Ruben Gideon"]
[Black "Juarez Flores, Carlos Armando"]
[Result "0-1"]
[ECO "D05"]
[WhiteElo "2465"]
[BlackElo "2300"]
[PlyCount "78"]
[EventDate "2024.02.06"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB07_2024"]
[SourceDate "2024.02.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.02.14"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. Nbd2 c5 4. e3 e6 5. c3 Nc6 6. Bd3 Bd6 7. 0-0 Bd7 8. dxc5 Bxc5 9. b4 Bd6 10. Bb2 a6 11. a3 b5 12. a4 Rb8 13. axb5 axb5 14. Qe2 0-0 15. Bxb5 e5 16. Ra6 Qc7 17. h3 Nxb4 18. Bxd7 Nxa6 19. Bb5 Qe7 20. c4 dxc4 21. Nxc4 Rxb5 22. Nxd6 Rxb2 23. Qxa6 Rfb8 24. Nf5 Qc5 25. Nh6+ Kf8 26. Nf5 h6 27. Rd1 Qc2 28. Qd6+ Kg8 29. Ne7+ Kh7 30. Rf1 Rb1 31. Rxb1 Rxb1+ 32. Kh2 e4 33. Nd4 Qxf2 34. Nef5 Qg1+ 35. Kg3 Rb2 36. Kf4 Qxg2 37. Ke5 Qh2+ 38. Ng3 Qxg3+ 39. Kf5 Qg5# 0-1

[Event "Titled Tuesday intern op 06th Feb Early"]
[Site "Chess.com INT"]
[Date "2024.02.06"]
[Round "9"]
[White "Koellner, Ruben Gideon"]
[Black "Parfenov, Viktor N"]
[Result "1-0"]
[ECO "D05"]
[WhiteElo "2465"]
[BlackElo "2193"]
[PlyCount "39"]
[EventDate "2024.02.06"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB07_2024"]
[SourceDate "2024.02.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.02.14"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. Nbd2 c5 4. e3 d5 5. c3 Nbd7 6. Bd3 b6 7. Ne5 Bb7 8. f4 Bd6 9. Qf3 Qc7 10. 0-0 Nf8 11. g4 g6 12. g5 Nh5 13. Bb5+ Ke7 14. a4 a6 15. Bd3 Nd7 16. Qh3 Rag8 17. Ndf3 h6 18. gxh6 Rxh6 19. Ng5 Nf8 20. Nexf7 1-0

[Event "Titled Tuesday intern op 06th Feb Late"]
[Site "Chess.com INT"]
[Date "2024.02.06"]
[Round "2"]
[White "Koellner, Ruben Gideon"]
[Black "Taranenko, Evgueniy"]
[Result "1-0"]
[ECO "A80"]
[WhiteElo "2465"]
[BlackElo "2201"]
[PlyCount "71"]
[EventDate "2024.02.06"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB07_2024"]
[SourceDate "2024.02.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.02.14"]
[SourceQuality "1"]

1. d4 f5 2. Bg5 g6 3. Nc3 d5 4. e3 c6 5. h4 h6 6. Bf4 Bg7 7. Nf3 Nd7 8. Bd3 Ngf6 9. Ne5 Nxe5 10. Bxe5 Be6 11. Qf3 Qd7 12. Ne2 0-0-0 13. Nf4 Bf7 14. h5 g5 15. Ng6 Bxg6 16. hxg6 e6 17. Bxf6 Bxf6 18. g4 f4 19. c3 c5 20. dxc5 Qc7 21. 0-0-0 Qxc5 22. exf4 gxf4 23. Kb1 e5 24. Rh5 Bg5 25. Bf5+ Kb8 26. Be6 e4 27. Qe2 f3 28. Qc2 Rhe8 29. Bf7 Re7 30. Qb3 Qxf2 31. Bxd5 e3 32. Bxf3 Red7 33. Rxd7 Rxd7 34. Qg8+ Rd8 35. Qf7 e2 36. Qxb7# 1-0

[Event "Titled Tuesday intern op 06th Feb Early"]
[Site "Chess.com INT"]
[Date "2024.02.06"]
[Round "4"]
[White "Koellner, Ruben Gideon"]
[Black "Wilk, Igor"]
[Result "1-0"]
[ECO "D05"]
[WhiteElo "2465"]
[BlackElo "2228"]
[PlyCount "65"]
[EventDate "2024.02.06"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB07_2024"]
[SourceDate "2024.02.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.02.14"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. Nbd2 d5 4. e3 Be7 5. Bd3 0-0 6. 0-0 b6 7. Ne5 Bb7 8. f4 Ne4 9. Qf3 f6 10. Ng4 Nxd2 11. Bxd2 Nd7 12. Qh3 f5 13. Ne5 Nxe5 14. fxe5 g6 15. g4 Kg7 16. gxf5 exf5 17. Kh1 Bc8 18. Qg2 Be6 19. Rf3 c5 20. Raf1 Qd7 21. c3 Rac8 22. Be1 cxd4 23. exd4 b5 24. Bd2 a5 25. a3 b4 26. axb4 axb4 27. cxb4 Rb8 28. Rh3 Rf7 29. Bg5 Bxg5 30. Qxg5 Rxb4 31. Rg1 Rxd4 32. Rxh7+ Kf8 33. Rh8+ 1-0

[Event "Titled Tuesday intern op 06th Feb Early"]
[Site "Chess.com INT"]
[Date "2024.02.06"]
[Round "1"]
[White "Mushini, Ajay"]
[Black "Koellner, Ruben Gideon"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "2384"]
[BlackElo "2465"]
[PlyCount "106"]
[EventDate "2024.02.06"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB07_2024"]
[SourceDate "2024.02.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.02.14"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. 0-0 c6 7. a4 h6 8. Be3 Qc7 9. a5 Nf8 10. a6 b5 11. Bd3 Ng6 12. Ne2 0-0 13. Ng3 Rb8 14. c3 Re8 15. Re1 Bf8 16. b4 Nf4 17. Bxf4 exf4 18. Nf1 Rb6 19. e5 dxe5 20. Nxe5 Rxa6 21. Qf3 Rxa1 22. Rxa1 Nd5 23. Be4 Be6 24. Nd2 Bd6 25. Nd3 Ra8 26. Nc5 a5 27. Bc2 Bxc5 28. bxc5 Re8 29. Be4 Nf6 30. Bc2 Bd5 31. Qd3 a4 32. f3 Re3 33. Qf1 Rxc3 34. Bb1 Re3 35. Qc1 Qa5 36. Qc2 Qc3 37. Nf1 Qxa1 38. Nxe3 fxe3 39. g3 Qxd4 40. Kf1 Bc4+ 41. Ke1 Qd2+ 42. Qxd2 exd2+ 43. Kxd2 a3 44. Kc3 a2 45. Bxa2 Bxa2 46. Kd4 Bd5 47. Ke5 Bxf3 48. Kd6 Bd5 49. Kc7 Ne4 50. Kb6 b4 51. Ka5 b3 52. Ka4 b2 53. Ka3 b1Q 0-1

[Event "Titled Tuesday intern op 06th Feb Late"]
[Site "Chess.com INT"]
[Date "2024.02.06"]
[Round "1"]
[White "Prieto Aranguren, Alain"]
[Black "Koellner, Ruben Gideon"]
[Result "0-1"]
[ECO "E61"]
[WhiteElo "2171"]
[BlackElo "2465"]
[PlyCount "84"]
[EventDate "2024.02.06"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB07_2024"]
[SourceDate "2024.02.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.02.14"]
[SourceQuality "1"]

1. d4 d6 2. Nf3 Nf6 3. c4 g6 4. Nc3 Bf5 5. Ng5 Bg7 6. e4 Bg4 7. Be2 Bxe2 8. Qxe2 Nc6 9. Be3 e5 10. d5 Nd4 11. Qd2 h6 12. Nf3 Nxf3+ 13. gxf3 Nh5 14. 0-0-0 Qf6 15. Nb5 Qe7 16. c5 a6 17. cxd6 cxd6 18. Nc3 Qf6 19. Qe2 Nf4 20. Bxf4 Qxf4+ 21. Kb1 0-0 22. Rhg1 Qxh2 23. Rg3 Qh4 24. Rdg1 b5 25. Qf1 Rac8 26. Rh3 Qf4 27. Qe2 Rc7 28. Rg4 Qf6 29. Rgh4 h5 30. Qe3 Rfc8 31. a3 Rc5 32. Na2 a5 33. Nc3 Qe7 34. Rh1 Bf6 35. R4h2 Bg5 36. Qe2 b4 37. Na4 Rc1+ 38. Rxc1 Rxc1+ 39. Ka2 Bf4 40. Rg2 Qb7 41. Qd3 h4 42. Rg4 b3+ 0-1

[Event "Titled Tuesday intern op 06th Feb Early"]
[Site "Chess.com INT"]
[Date "2024.02.06"]
[Round "7"]
[White "Sahin, Sarp"]
[Black "Koellner, Ruben Gideon"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "2115"]
[BlackElo "2465"]
[PlyCount "70"]
[EventDate "2024.02.06"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB07_2024"]
[SourceDate "2024.02.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.02.14"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. 0-0 c6 7. a4 h6 8. Re1 Qc7 9. Ba2 Nf8 10. dxe5 dxe5 11. Be3 Ng6 12. h3 0-0 13. Qd2 Kh8 14. Rad1 Nh7 15. Ne2 f5 16. exf5 Bxf5 17. Ng3 Bxh3 18. Qd3 Nf4 19. Bxf4 exf4 20. Ne4 Bg4 21. Ned2 Bc5 22. Ne5 Bh5 23. Qh3 Nf6 24. Ndf3 Rae8 25. Be6 Bd6 26. Nc4 Bb4 27. c3 Be7 28. Bd7 b5 29. Bxe8 Bg4 30. Qh4 Rxe8 31. Nfe5 Bxd1 32. Qxf4 Kg8 33. Qf5 Bh5 34. Qe6+ Kh8 35. g4 Bf8 0-1

[Event "Titled Tuesday intern op 06th Feb Early"]
[Site "Chess.com INT"]
[Date "2024.02.06"]
[Round "11"]
[White "Szpar, Milosz"]
[Black "Koellner, Ruben Gideon"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "2495"]
[BlackElo "2465"]
[PlyCount "92"]
[EventDate "2024.02.06"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB07_2024"]
[SourceDate "2024.02.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.02.14"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. dxe5 dxe5 5. Qxd8+ Kxd8 6. Bg5 Be6 7. 0-0-0+ Nbd7 8. f4 exf4 9. Nf3 h6 10. Bxf4 Ng4 11. Bg3 Bc5 12. Nd5 c6 13. Nc7 Nf2 14. Nxe6+ fxe6 15. Bxf2 Bxf2 16. Ne5 Ke8 17. Rxd7 Be3+ 18. Rd2 Rd8 19. Bd3 Rf8 20. Re1 Bf4 21. Ng6 Bxd2+ 22. Kxd2 Rf2+ 23. Re2 Rf1 24. a4 a5 25. b3 Kf7 26. Ne5+ Kf6 27. Ng4+ Ke7 28. Rf2 Rxf2+ 29. Nxf2 Rf8 30. Ke3 Kd6 31. Be2 e5 32. Bg4 b6 33. Nd3 Rf1 34. h4 Rh1 35. h5 Ra1 36. Nb2 b5 37. Kd2 Ra2 38. Kc1 Ra1+ 39. Kd2 Ra2 40. Nd1 bxa4 41. bxa4 Rxa4 42. Bf3 Ra1 43. Ne3 Kc5 44. Nf5 a4 45. Nxg7 a3 46. Kc3 Rb1 0-1

[Event "Titled Tuesday intern op 06th Feb Early"]
[Site "Chess.com INT"]
[Date "2024.02.06"]
[Round "5"]
[White "Theodorou, Nikolas"]
[Black "Koellner, Ruben Gideon"]
[Result "1-0"]
[ECO "E01"]
[WhiteElo "2622"]
[BlackElo "2465"]
[PlyCount "97"]
[EventDate "2024.02.06"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB07_2024"]
[SourceDate "2024.02.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.02.14"]
[SourceQuality "1"]

1. Nf3 d5 2. b3 Nd7 3. Bb2 c6 4. g3 Ngf6 5. Bg2 Qc7 6. d4 e6 7. 0-0 Bd6 8. c4 0-0 9. Nc3 Re8 10. Rc1 a6 11. Nd2 Qb8 12. e4 dxe4 13. Ndxe4 Nxe4 14. Nxe4 Bf8 15. d5 cxd5 16. cxd5 exd5 17. Qxd5 Nb6 18. Qd4 Nd7 19. Qd5 Ne5 20. Rxc8 Qxc8 21. Bxe5 Qf5 22. f4 Rac8 23. Ng5 Rc5 24. Qxb7 Re7 25. Be4 Qxg5 26. fxg5 Rxb7 27. Bxb7 Rxe5 28. Bxa6 Rxg5 29. Bc4 h5 30. Rxf7 Bc5+ 31. Kg2 Kh7 32. Bd3+ Kh6 33. Rf5 Rxf5 34. Bxf5 Ba3 35. Kf3 Kg5 36. Bd7 h4 37. gxh4+ Kxh4 38. h3 Kg5 39. Bg4 Kf6 40. Ke4 Ke7 41. Kd5 Kd8 42. Kc4 Kc7 43. b4 Kb6 44. Kb3 Bc1 45. a4 Bf4 46. a5+ Kb7 47. b5 Bd2 48. Bf3+ Kb8 49. Ka4 1-0

[Event "Titled Tuesday intern op 23rd Jan Late"]
[Site "Chess.com INT"]
[Date "2024.01.23"]
[Round "3"]
[White "Alekseenko, Kirill"]
[Black "Koellner, Ruben Gideon"]
[Result "1-0"]
[ECO "C24"]
[WhiteElo "2650"]
[BlackElo "2482"]
[PlyCount "69"]
[EventDate "2024.01.23"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB05_2024"]
[SourceDate "2024.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.31"]
[SourceQuality "1"]

1. e4 d6 2. Bc4 Nf6 3. d3 e5 4. Bb3 Be7 5. Nf3 0-0 6. 0-0 c6 7. c3 Nbd7 8. Re1 h6 9. Nbd2 Re8 10. Nf1 Nf8 11. Ng3 Ng6 12. h3 Bf8 13. d4 a5 14. a4 Be6 15. Bc2 Qc7 16. Be3 Rad8 17. Qd2 d5 18. exd5 Nxd5 19. Bxg6 Nxe3 20. Rxe3 exd4 21. Bxf7+ Qxf7 22. cxd4 Bb4 23. Qc2 Bd5 24. Ne5 Qf4 25. Rd1 c5 26. Nd3 Qg5 27. Rxe8+ Rxe8 28. dxc5 Bc6 29. Nxb4 axb4 30. Qc4+ Kh7 31. Qxb4 Qf6 32. b3 Rf8 33. Qd2 Rf7 34. Qc2+ Kh8 35. b4 1-0

[Event "Titled Tuesday intern op 23rd Jan Late"]
[Site "Chess.com INT"]
[Date "2024.01.23"]
[Round "8"]
[White "Biletskyy, Dmytro"]
[Black "Koellner, Ruben Gideon"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "1926"]
[BlackElo "2482"]
[PlyCount "93"]
[EventDate "2024.01.23"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB05_2024"]
[SourceDate "2024.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.31"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. 0-0 c6 7. a4 h6 8. h3 Qc7 9. Be3 Nf8 10. Qe2 g5 11. Nd2 Ng6 12. Rfd1 Nf4 13. Qf1 Rg8 14. Bb3 g4 15. h4 g3 16. fxg3 N4h5 17. dxe5 dxe5 18. Nc4 Be6 19. Bf2 Ng4 20. Qe2 Nxf2 21. Qxh5 Nxd1 22. Rxd1 Bg4 23. Nd6+ Bxd6 24. Qxh6 Bxd1 25. Be6 fxe6 26. Qxe6+ Kf8 27. Nxd1 Qe7 28. Qh6+ Ke8 29. Ne3 Bc5 30. Kh2 Bxe3 31. Qxe3 Kd7 32. Qd3+ Qd6 33. Qb3 Kc7 34. a5 Rgf8 35. h5 Rf6 36. g4 Qe6 37. g5 Qxb3 38. cxb3 Rf2 39. Kg3 Rf4 40. g6 Rg8 41. Kh3 Kd6 42. g4 Ke6 43. Kh4 Kf6 44. b4 Rxe4 45. b3 Rxb4 46. Kg3 Kg5 47. Kf3 0-1

[Event "Titled Tuesday intern op 23rd Jan Late"]
[Site "Chess.com INT"]
[Date "2024.01.23"]
[Round "10"]
[White "Dau, Khuong Duy"]
[Black "Koellner, Ruben Gideon"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "2309"]
[BlackElo "2482"]
[PlyCount "85"]
[EventDate "2024.01.23"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB05_2024"]
[SourceDate "2024.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.31"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. 0-0 c6 7. a4 h6 8. dxe5 dxe5 9. a5 Qc7 10. Qe2 Nf8 11. Rd1 Ng6 12. h3 0-0 13. Be3 Nh5 14. Qf1 Nhf4 15. Kh2 Kh8 16. Ng1 f5 17. g3 fxe4 18. Nxe4 Nd5 19. Qe2 Bf5 20. Bd3 Nxe3 21. Qxe3 Bb4 22. a6 b6 23. Nf3 Rae8 24. c3 Be7 25. Kg2 Qc8 26. Ng1 Rf7 27. Re1 Ref8 28. Re2 c5 29. Bc4 Be6 30. Bxe6 Qxe6 31. Qd3 c4 32. Qc2 Qc6 33. Kh2 Rf5 34. Rf1 b5 35. Ra1 Bc5 36. Qd2 Qb6 37. Rf1 Be7 38. Qd7 Qxa6 39. Rd2 R5f7 40. Qg4 Qc6 41. h4 Kh7 42. Nh3 Rf5 43. h5 1-0

[Event "Titled Tuesday intern op 23rd Jan Late"]
[Site "Chess.com INT"]
[Date "2024.01.23"]
[Round "2"]
[White "Grot, Blazej"]
[Black "Koellner, Ruben Gideon"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "2102"]
[BlackElo "2482"]
[PlyCount "148"]
[EventDate "2024.01.23"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB05_2024"]
[SourceDate "2024.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.31"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. g4 d5 6. dxe5 Nxe4 7. Qxd5 Nxc3 8. bxc3 c6 9. Qd1 Qa5 10. Qd4 Bc5 11. Qd3 Qb6 12. Qe2 0-0 13. Bg2 Re8 14. 0-0 Qc7 15. Bf4 Nb6 16. Nd4 Nd5 17. Bxd5 cxd5 18. Bg3 Qa5 19. Qf3 Be6 20. Nxe6 fxe6 21. Rab1 b6 22. Qd3 Qxa2 23. Ra1 Qc4 24. Qxc4 dxc4 25. Rfd1 a5 26. Kf1 Red8 27. Ke2 g5 28. h4 h6 29. hxg5 hxg5 30. f4 gxf4 31. Bxf4 Rxd1 32. Rxd1 a4 33. Ra1 a3 34. Be3 Bxe3 35. Kxe3 Kg7 36. Kd4 Ra4 37. Ke4 Kg6 38. Kf4 Ra5 39. Ra2 Kf7 40. Ke4 Kg7 41. Kd4 Ra4 42. Ke4 Kg6 43. Kf4 Ra5 44. Ke4 Kg5 45. Kf3 Ra8 46. Kg3 Ra7 47. Kf3 Rf7+ 48. Kg3 Rf4 49. Rxa3 Rxg4+ 50. Kf3 Kf5 51. Ra6 Rf4+ 52. Kg3 Re4 53. Rxb6 Re3+ 54. Kf2 Rxc3 55. Rb2 Kxe5 56. Ke2 Kd4 57. Kd2 Rh3 58. Rb6 Rh2+ 59. Ke1 e5 60. Rd6+ Kc3 61. Re6 Rh5 62. Kd1 Rh1+ 63. Ke2 Rh2+ 64. Ke3 Rh5 65. Rc6 Rh3+ 66. Ke2 Rh2+ 67. Kd1 Rd2+ 68. Ke1 Rxc2 69. Rc5 e4 70. Re5 Kd4 71. Re8 Rh2 72. Rd8+ Ke3 73. Kd1 c3 74. Kc1 Rd2 0-1

[Event "Titled Tuesday intern op 23rd Jan Late"]
[Site "Chess.com INT"]
[Date "2024.01.23"]
[Round "5"]
[White "Kamsky, Gata"]
[Black "Koellner, Ruben Gideon"]
[Result "1-0"]
[ECO "A48"]
[WhiteElo "2623"]
[BlackElo "2482"]
[PlyCount "111"]
[EventDate "2024.01.23"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB05_2024"]
[SourceDate "2024.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.31"]
[SourceQuality "1"]

1. d4 d6 2. Nf3 Nf6 3. Bf4 g6 4. h3 Bg7 5. c3 0-0 6. Nbd2 Nc6 7. e4 Re8 8. Be2 e5 9. dxe5 Nxe5 10. Nxe5 dxe5 11. Bg5 Be6 12. 0-0 c6 13. Qc2 Qc7 14. Bc4 h6 15. Be3 Rad8 16. Bxe6 Rxe6 17. a4 b6 18. Nc4 Re7 19. Rfd1 Red7 20. Rxd7 Rxd7 21. b4 Kh7 22. a5 b5 23. Nd2 a6 24. Nb3 Bf8 25. f3 Qd8 26. Bb6 Qc8 27. Bc5 Bg7 28. Rd1 Rxd1+ 29. Qxd1 Qd7 30. Qd6 Qxd6 31. Bxd6 Nd7 32. Kf2 Kg8 33. Ke3 Bf8 34. Bxf8 Kxf8 35. g3 Ke7 36. f4 f6 37. h4 Kd6 38. f5 gxf5 39. exf5 Kd5 40. Nd2 c5 41. g4 cxb4 42. cxb4 Nb8 43. Ne4 Nd7 44. Kd3 Kc6 45. Nc3 Kd6 46. Ke4 Nb8 47. Nd5 Nd7 48. Nc3 Nb8 49. Kd3 Nd7 50. Ke3 Kc6 51. Ke4 Kc7 52. Kd5 Kd8 53. Ke6 Ke8 54. Ne4 Kd8 55. g5 fxg5 56. hxg5 1-0

[Event "Titled Tuesday intern op 23rd Jan Late"]
[Site "Chess.com INT"]
[Date "2024.01.23"]
[Round "1"]
[White "Koellner, Ruben Gideon"]
[Black "Gong, Daniel Hanwen"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2482"]
[BlackElo "2319"]
[PlyCount "139"]
[EventDate "2024.01.23"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB05_2024"]
[SourceDate "2024.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Nbd2 Bg7 4. e4 d6 5. Bc4 0-0 6. 0-0 c6 7. Bb3 a5 8. a4 Nbd7 9. e5 dxe5 10. dxe5 Nd5 11. e6 fxe6 12. Ne4 N7f6 13. Qe2 Nxe4 14. Qxe4 e5 15. Nxe5 Bf5 16. Qe2 Kh8 17. Re1 Qd6 18. Nc4 Qf6 19. Bd2 Rae8 20. Ne5 b6 21. h3 Bc8 22. Rad1 Bb7 23. Nd7 Qxb2 24. Nxf8 Rxf8 25. Bxd5 cxd5 26. Qxe7 Bc6 27. Rb1 Qxc2 28. Be3 Qf5 29. Rxb6 Bxa4 30. Rb7 Qf6 31. Qxf6 Bxf6 32. Bh6 Rd8 33. Re6 Bc3 34. Rd6 Re8 35. g3 d4 36. Bg7+ Kg8 37. Bxd4 Bxd4 38. Rxd4 Bc6 39. Rb1 a4 40. Rbd1 a3 41. Rd8 a2 42. Rxe8+ Bxe8 43. Kf1 Bb5+ 44. Ke1 Bd3 45. Ra1 Bc4 46. Kd2 Kf7 47. Kc3 Bd5 48. Kb2 Be6 49. Rxa2 Bxh3 50. Kc3 Kf6 51. Ra5 Bf5 52. Kd4 Kg5 53. f3 h5 54. Ke3 Kf6 55. Kf4 g5+ 56. Ke3 h4 57. gxh4 gxh4 58. Kf4 Be6 59. Rh5 h3 60. Rh6+ Ke7 61. Ke5 Bc8 62. f4 Kf7 63. f5 Kg7 64. Rxh3 Kf7 65. Rc3 Ba6 66. Rc7+ Kf8 67. Kf6 Ke8 68. Kg7 Kd8 69. Ra7 Bc4 70. f6 1-0

[Event "Titled Tuesday intern op 23rd Jan Late"]
[Site "Chess.com INT"]
[Date "2024.01.23"]
[Round "9"]
[White "Koellner, Ruben Gideon"]
[Black "Grinev, Valeriy"]
[Result "1-0"]
[ECO "B13"]
[WhiteElo "2482"]
[BlackElo "2422"]
[PlyCount "79"]
[EventDate "2024.01.23"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB05_2024"]
[SourceDate "2024.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.31"]
[SourceQuality "1"]

1. d4 c5 2. e3 Nf6 3. Nf3 cxd4 4. exd4 g6 5. c3 Bg7 6. Nbd2 0-0 7. Bd3 d5 8. 0-0 Nc6 9. Re1 Bg4 10. h3 Bxf3 11. Nxf3 e6 12. Bg5 Qb6 13. Qe2 Rac8 14. h4 h5 15. Ne5 Nxe5 16. dxe5 Ng4 17. Bf4 d4 18. c4 Rfd8 19. Rad1 Qa5 20. a3 Qb6 21. b4 a5 22. c5 Qc7 23. f3 Ne3 24. Bxe3 dxe3 25. Qxe3 axb4 26. axb4 Rd5 27. f4 Rcd8 28. Be2 Bh6 29. Bf3 Rxd1 30. Rxd1 Rxd1+ 31. Bxd1 Qd7 32. Bf3 Qa4 33. Qd4 Qa3 34. Kh2 Qc1 35. g3 Qc2+ 36. Kh3 Qf5+ 37. Kg2 Qc2+ 38. Qf2 Qf5 39. Bxb7 Qc2 40. Qxc2 1-0

[Event "Titled Tuesday intern op 23rd Jan Late"]
[Site "Chess.com INT"]
[Date "2024.01.23"]
[Round "7"]
[White "Koellner, Ruben Gideon"]
[Black "Lazavik, Denis"]
[Result "0-1"]
[ECO "A80"]
[WhiteElo "2482"]
[BlackElo "2566"]
[PlyCount "66"]
[EventDate "2024.01.23"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB05_2024"]
[SourceDate "2024.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.31"]
[SourceQuality "1"]

1. d4 f5 2. Bg5 h6 3. Bh4 g5 4. Bg3 Bg7 5. e3 c5 6. c3 Qb6 7. Nd2 d5 8. h4 g4 9. Ne2 Nf6 10. h5 0-0 11. Qb3 Be6 12. Nf4 Bf7 13. dxc5 Qxc5 14. Qxb7 Nbd7 15. Qb5 Qc8 16. Qa6 Qb8 17. Ne6 Qxb2 18. Rb1 Qxc3 19. Nxf8 Rxf8 20. Qd3 Ne4 21. Be2 Ndc5 22. Qxc3 Bxc3 23. Rd1 Rb8 24. Bxb8 Nxd2 25. Rxd2 Ne4 26. Bxa7 Nxd2 27. Kd1 Ne4 28. Kc2 Ba5 29. f3 Ng3 30. Rh4 Nxe2 31. fxg4 d4 32. exd4 f4 33. a4 Bd5 0-1

[Event "Titled Tuesday intern op 23rd Jan Late"]
[Site "Chess.com INT"]
[Date "2024.01.23"]
[Round "4"]
[White "Koellner, Ruben Gideon"]
[Black "Martins, Bruno Andre Leite"]
[Result "1-0"]
[ECO "D05"]
[WhiteElo "2482"]
[BlackElo "2347"]
[PlyCount "101"]
[EventDate "2024.01.23"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB05_2024"]
[SourceDate "2024.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. Nbd2 c5 4. e3 d5 5. c3 Bd6 6. Bd3 0-0 7. 0-0 Nc6 8. dxc5 Bxc5 9. b4 Bd6 10. Bb2 Qe7 11. a3 e5 12. c4 e4 13. Bxf6 Qxf6 14. Bxe4 dxe4 15. Nxe4 Bxh2+ 16. Nxh2 Qe6 17. Nd6 Rd8 18. c5 b6 19. Qf3 Bd7 20. Rfd1 bxc5 21. bxc5 Ne5 22. Qe4 Bc6 23. Qf4 Qg6 24. e4 Qe6 25. Nf3 Nxf3+ 26. Qxf3 Rab8 27. Rac1 h6 28. Qf5 Qxf5 29. exf5 Kf8 30. Rc3 Ke7 31. Re1+ Kf6 32. f3 Rb2 33. Kh2 h5 34. Kg3 h4+ 35. Kh2 Rh8 36. Kh3 g6 37. fxg6 Bd7+ 38. g4 hxg3+ 39. Kxg3 Rg8 40. Kf4 fxg6 41. Ne4+ Kg7 42. Rd1 Rf8+ 43. Ke3 Bc6 44. Rd6 Bxe4 45. fxe4 Rff2 46. c6 Rfe2+ 47. Kf4 Rf2+ 48. Ke5 Rb5+ 49. Rd5 Rb8 50. c7 Rc8 51. Rd8 1-0

[Event "Titled Tuesday intern op 23rd Jan Late"]
[Site "Chess.com INT"]
[Date "2024.01.23"]
[Round "6"]
[White "Koellner, Ruben Gideon"]
[Black "Shapiro, Viktor"]
[Result "1-0"]
[ECO "A48"]
[WhiteElo "2482"]
[BlackElo "2113"]
[PlyCount "117"]
[EventDate "2024.01.23"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB05_2024"]
[SourceDate "2024.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 c5 3. e3 g6 4. Nbd2 cxd4 5. exd4 Bg7 6. c3 0-0 7. Bd3 b6 8. 0-0 Bb7 9. Re1 d6 10. Qe2 e6 11. a4 a6 12. Nf1 Nbd7 13. Ng3 Re8 14. h4 h5 15. Bg5 Qc7 16. Rad1 e5 17. dxe5 dxe5 18. Bxf6 Nxf6 19. Ne4 Nd5 20. g3 f5 21. Bc4 Rad8 22. Neg5 e4 23. Nd4 e3 24. Nde6 exf2+ 25. Kxf2 Qc8 26. Qd3 Rd6 27. Nf4 Qc5+ 28. Kf1 Rxe1+ 29. Rxe1 b5 30. axb5 axb5 31. Re8+ Bf8 32. Rxf8+ Kxf8 33. Nge6+ Ke7 34. Nxc5 Nxf4 35. gxf4 Rxd3 36. Bxd3 Bd5 37. Bxb5 Kd6 38. Nd3 Be4 39. Ne5 Ke6 40. Nxg6 Kf6 41. Ne5 Bc2 42. Kf2 Ke6 43. Be2 Kd5 44. Ke3 Bb3 45. Bxh5 Kc5 46. Bf3 Kd6 47. h5 Ke7 48. h6 Kf6 49. Bh5 Bg8 50. Bg6 Bb3 51. c4 Ba4 52. c5 Bb3 53. h7 Kg7 54. c6 Be6 55. c7 Bc8 56. b4 Kh8 57. Nf7+ Kg7 58. h8Q+ Kxg6 59. Ne5# 1-0

[Event "Titled Tuesday intern op 23rd Jan Late"]
[Site "Chess.com INT"]
[Date "2024.01.23"]
[Round "11"]
[White "Koellner, Ruben Gideon"]
[Black "Tan, Ralph"]
[Result "1/2-1/2"]
[ECO "D05"]
[WhiteElo "2482"]
[BlackElo "2016"]
[PlyCount "128"]
[EventDate "2024.01.23"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB05_2024"]
[SourceDate "2024.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.31"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 e6 3. e3 Be7 4. Nbd2 Nf6 5. Bd3 0-0 6. 0-0 Nbd7 7. Ne5 c5 8. c3 Bd6 9. f4 b6 10. Qf3 Bb7 11. g4 cxd4 12. exd4 Ne4 13. Nxe4 dxe4 14. Bxe4 Bxe4 15. Qxe4 Nf6 16. Qg2 Bxe5 17. fxe5 Nd5 18. Bd2 Rc8 19. Rf3 b5 20. Raf1 a5 21. a3 Qb6 22. Qf2 Rc7 23. h4 Qb7 24. h5 b4 25. axb4 axb4 26. h6 g6 27. Rc1 Rfc8 28. Qf1 Qb6 29. Kh2 bxc3 30. bxc3 Qb2 31. Qg2 Ra7 32. Bg5 Ra2 33. Qxb2 Rxb2+ 34. Kg3 Kf8 35. c4 Nb6 36. Rcf1 Rc7 37. Bd8 Rd7 38. Bxb6 Rxb6 39. d5 exd5 40. cxd5 Ke8 41. e6 fxe6 42. Rf8+ Ke7 43. R1f7+ Kd6 44. dxe6 Rxf7 45. Rxf7 Kxe6 46. Rxh7 Kf6 47. Rc7 g5 48. Kf3 Kg6 49. h7 Rb8 50. Ke4 Re8+ 51. Kd5 Kf6 52. Rc1 Kg7 53. Rh1 Kh8 54. Rh5 Re1 55. Kd4 Rg1 56. Rxg5 Kxh7 57. Ke3 Rf1 58. Rf5 Rxf5 59. gxf5 Kg7 60. Ke4 Kf7 61. Kf4 Kf6 62. Ke4 Kf7 63. Ke5 Ke7 64. Ke4 Kf7 1/2-1/2

[Event "Titled Tuesday intern op 16th Jan Late"]
[Site "Chess.com INT"]
[Date "2024.01.16"]
[Round "3"]
[White "Ghosh, Chanchal Kumer"]
[Black "Koellner, Ruben Gideon"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "2026"]
[BlackElo "2482"]
[PlyCount "88"]
[EventDate "2024.01.16"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB04_2024"]
[SourceDate "2023.10.16"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.16"]
[SourceQuality "1"]

1. e4 d6 2. Nf3 Nf6 3. Nc3 e5 4. d4 Nbd7 5. h3 c6 6. Be2 Be7 7. 0-0 Qc7 8. Re1 h6 9. a4 Nf8 10. d5 g5 11. Be3 Ng6 12. a5 g4 13. hxg4 Nxg4 14. Qd2 Nxe3 15. Qxe3 a6 16. Na4 c5 17. Nb6 Rb8 18. c3 Bg4 19. b4 Nf4 20. bxc5 Rg8 21. g3 Nxe2+ 22. Rxe2 Rg6 23. Rd2 h5 24. cxd6 Bxd6 25. Nh4 Bc5 26. Qd3 Rf6 27. Nc4 Rd8 28. Rb1 Kf8 29. Ne3 Qxa5 30. Rxb7 Qa1+ 31. Rb1 Qa4 32. Nef5 a5 33. Rdb2 Kg8 34. Rb8 Rxb8 35. Rxb8+ Kh7 36. Qd2 Qd1+ 37. Qxd1 Bxd1 38. Ra8 a4 39. Kf1 Bc2 40. f3 a3 41. Ke2 Rb6 42. Kd2 Rb2 43. d6 Bxe4+ 44. Kc1 Bxa8 0-1

[Event "Titled Tuesday intern op 16th Jan Late"]
[Site "Chess.com INT"]
[Date "2024.01.16"]
[Round "4"]
[White "Koellner, Ruben Gideon"]
[Black "Ibarra Jerez, Jose Carlos"]
[Result "0-1"]
[ECO "D04"]
[WhiteElo "2482"]
[BlackElo "2559"]
[PlyCount "102"]
[EventDate "2024.01.16"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB04_2024"]
[SourceDate "2023.10.16"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.16"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. e3 c5 4. Nbd2 cxd4 5. exd4 Nc6 6. c3 Bf5 7. Bb5 e6 8. Qa4 Qb6 9. Ne5 Rc8 10. 0-0 Bd6 11. Ndf3 0-0 12. Bg5 Bxe5 13. dxe5 Nd7 14. Rfe1 Nc5 15. Bxc6 Nxa4 16. Bxa4 Qxb2 17. Be7 Qxc3 18. h3 Be4 19. Ng5 Qxe5 20. Nxe4 dxe4 21. Rab1 Rc7 22. Bxf8 Kxf8 23. Rbd1 g6 24. Rd8+ Kg7 25. g3 Qa5 26. Rxe4 Rc1+ 27. Rd1 Rxd1+ 28. Bxd1 Qxa2 29. Bf3 Qb1+ 30. Kg2 a5 31. Ra4 b6 32. h4 h5 33. Rc4 b5 34. Rc7 a4 35. Bc6 Qc2 36. Rc8 a3 37. Bd7 Qxc8 38. Bxc8 a2 39. Bd7 b4 40. Bb5 a1Q 41. Bc4 Qc3 42. Be2 b3 43. Bf3 b2 44. g4 hxg4 45. Bxg4 b1Q 46. Bf3 Qf5 47. Kg3 Qfxf3+ 48. Kh2 Qh3+ 49. Kg1 Qcf3 50. h5 Kf6 51. h6 Qfg4# 0-1

[Event "Titled Tuesday intern op 16th Jan Late"]
[Site "Chess.com INT"]
[Date "2024.01.16"]
[Round "1"]
[White "Koellner, Ruben Gideon"]
[Black "Marcziter, Dmitrii"]
[Result "1/2-1/2"]
[ECO "D05"]
[WhiteElo "2482"]
[BlackElo "2190"]
[PlyCount "100"]
[EventDate "2024.01.16"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB04_2024"]
[SourceDate "2023.10.16"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.16"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 c5 3. e3 Nf6 4. c3 Nc6 5. Nbd2 e6 6. Bd3 Bd6 7. 0-0 e5 8. dxe5 Nxe5 9. Nxe5 Bxe5 10. e4 0-0 11. exd5 Qxd5 12. Nf3 Bg4 13. Be2 Bc7 14. h3 Bh5 15. Qxd5 Nxd5 16. Rd1 Rad8 17. Bg5 f6 18. Bc4 Bf7 19. Be3 b6 20. a4 Nxe3 21. Bxf7+ Kxf7 22. fxe3 Bg3 23. Kf1 Ke7 24. Ke2 Rxd1 25. Rxd1 Rd8 26. Rxd8 Kxd8 27. Kd3 Kd7 28. Kc4 Kc6 29. b4 cxb4 30. cxb4 a6 31. Nd4+ Kd7 32. Kd5 Bf2 33. Nc2 g6 34. e4 b5 35. axb5 axb5 36. Na3 Be1 37. Kc5 Ke6 38. Nc2 Bf2+ 39. Kxb5 Ke5 40. Kc6 Kxe4 41. b5 Kf4 42. Nb4 Kg3 43. Nd3 Ba7 44. Kb7 Bd4 45. Ne1 Kf2 46. Nc2 Bc5 47. Kc6 Ba7 48. Kb7 Bc5 49. Kc6 Ba7 50. Kb7 Bc5 1/2-1/2

[Event "Titled Tuesday intern op 16th Jan Late"]
[Site "Chess.com INT"]
[Date "2024.01.16"]
[Round "2"]
[White "Spichkin, Alexander"]
[Black "Koellner, Ruben Gideon"]
[Result "0-1"]
[ECO "A02"]
[WhiteElo "2035"]
[BlackElo "2482"]
[PlyCount "74"]
[EventDate "2024.01.16"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB04_2024"]
[SourceDate "2023.10.16"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.16"]
[SourceQuality "1"]

1. f4 a6 2. Nf3 b5 3. d3 Bb7 4. e4 d5 5. exd5 Qxd5 6. Be2 Nf6 7. 0-0 e6 8. Nc3 Bc5+ 9. Kh1 Qd6 10. Qe1 Nbd7 11. Qg3 0-0-0 12. Ne5 Qe7 13. Bf3 Nd5 14. Ne4 g6 15. Nxc5 Nxc5 16. c4 Nb4 17. Bxb7+ Kxb7 18. Qf3+ Kb6 19. Be3 f6 20. d4 fxe5 21. dxc5+ Ka7 22. c6+ Kb8 23. cxb5 axb5 24. a3 Nc2 25. Qe2 Rd5 26. Qxc2 exf4 27. Rxf4 e5 28. Rb4 Rhd8 29. a4 Qxb4 30. axb5 Qxb5 31. h3 R5d6 32. Rc1 Re6 33. Kh2 Rdd6 34. Rf1 Rxc6 35. Qd2 Kb7 36. Qd8 Qxf1 37. Qd6 Rexd6 0-1

[Event "Staufer op 34th"]
[Site "Schwaebisch Gmuend"]
[Date "2024.01.06"]
[Round "9"]
[White "Volkov, Mykyta"]
[Black "Koellner, Ruben Gideon"]
[Result "1/2-1/2"]
[ECO "D35"]
[WhiteElo "2281"]
[BlackElo "2482"]
[PlyCount "34"]
[EventDate "2024.01.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[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 Bf5 7. Qf3 Bg6 8. Bxf6 Qxf6 9. Qxf6 gxf6 10. h4 h5 11. Kd2 Nd7 12. Nge2 Bd6 13. g3 f5 14. Nf4 Nf6 15. f3 0-0-0 16. Bd3 Rhe8 17. Rhe1 Kb8 1/2-1/2

[Event "Staufer op 34th"]
[Site "Schwaebisch Gmuend"]
[Date "2024.01.05"]
[Round "7"]
[White "Koellner, Ruben Gideon"]
[Black "Nemitz, Alfred"]
[Result "1-0"]
[ECO "D05"]
[WhiteElo "2482"]
[BlackElo "2223"]
[PlyCount "83"]
[EventDate "2024.01.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB02_2024"]
[SourceDate "2024.01.10"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.10"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 c5 3. e3 Nf6 4. Nbd2 Nc6 5. c3 e6 6. Bd3 Bd6 7. 0-0 0-0 8. dxc5 Bxc5 9. b4 Bd6 10. Bb2 e5 11. e4 Bc7 12. Re1 Re8 13. Qc2 h6 14. Rad1 Bg4 15. h3 Bxf3 16. Nxf3 dxe4 17. Bxe4 Qb8 18. b5 Ne7 19. c4 Nxe4 20. Qxe4 a6 21. a4 axb5 22. axb5 Ng6 23. Rd7 Ra2 24. Qb1 Nf8 25. Rxf7 Rxb2 26. Rxf8+ Rxf8 27. Qxb2 Qa7 28. Qc2 Qc5 29. Re2 Rf4 30. Nd2 Qd4 31. Ne4 Ba5 32. g3 Rf7 33. c5 Kh8 34. Qa2 Qd1+ 35. Kg2 Rf8 36. Re3 Bb4 37. Qc4 Qd4 38. Qxd4 exd4 39. Rb3 Ba5 40. Rd3 Rd8 41. Nd6 b6 42. Nf7+ 1-0

[Event "Staufer op 34th"]
[Site "Schwaebisch Gmuend"]
[Date "2024.01.05"]
[Round "8"]
[White "Koellner, Ruben Gideon"]
[Black "Wong, Gengchun"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "2482"]
[BlackElo "2267"]
[PlyCount "55"]
[EventDate "2024.01.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB02_2024"]
[SourceDate "2024.01.10"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.10"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 d5 3. Nd2 c5 4. dxc5 e6 5. e4 Bxc5 6. e5 h6 7. Bh4 g5 8. Bg3 Nfd7 9. Qh5 Bd4 10. Ngf3 Bxb2 11. Rb1 Bc3 12. h4 gxh4 13. Rxh4 Nc6 14. Bb5 Nf8 15. Rb3 Ba5 16. Rg4 Qc7 17. Ng5 hxg5 18. Qxh8 Bd7 19. c3 0-0-0 20. Qf6 d4 21. c4 Bxd2+ 22. Kxd2 Qa5+ 23. Kd1 Qxa2 24. Qf3 a6 25. Qd3 axb5 26. cxb5 Qa1+ 27. Rb1 Qa4+ 28. Ke2 1/2-1/2

[Event "Staufer op 34th"]
[Site "Schwaebisch Gmuend"]
[Date "2024.01.04"]
[Round "6"]
[White "Khrapko, Marharyta"]
[Black "Koellner, Ruben Gideon"]
[Result "1/2-1/2"]
[ECO "C61"]
[WhiteElo "2236"]
[BlackElo "2482"]
[PlyCount "77"]
[EventDate "2024.01.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB02_2024"]
[SourceDate "2024.01.10"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. 0-0 Nd4 5. Nxd4 exd4 6. d3 c6 7. Bc4 d5 8. exd5 cxd5 9. Bb5+ Bd7 10. Bxd7+ Qxd7 11. Bg5 Ne7 12. Nd2 f6 13. Nb3 Bb6 14. Bd2 0-0 15. a4 a5 16. Re1 Nc6 17. Qf3 Ne5 18. Qg3 Rfc8 19. Rec1 Rc6 20. Qh4 Qc7 21. f4 Nf7 22. Qh5 Rd8 23. Qd1 Nh6 24. Kh1 Nf5 25. Qe1 Ra8 26. c4 dxc3 27. Rxc3 Qf7 28. Rxc6 bxc6 29. Bxa5 Ba7 30. Qd1 Qg6 31. d4 Rb8 32. Bc3 Nh4 33. Qe2 Rxb3 34. Qe6+ Qf7 35. Qc8+ Qf8 36. Qd7 Qf7 37. Qc8+ Qf8 38. Qd7 Qf7 39. Qc8+ 1/2-1/2

[Event "Staufer op 34th"]
[Site "Schwaebisch Gmuend"]
[Date "2024.01.04"]
[Round "5"]
[White "Koellner, Ruben Gideon"]
[Black "Luebke, Florentin"]
[Result "1-0"]
[ECO "D05"]
[WhiteElo "2482"]
[BlackElo "2204"]
[PlyCount "83"]
[EventDate "2024.01.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB02_2024"]
[SourceDate "2024.01.10"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.10"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 c5 3. e3 Nf6 4. Nbd2 e6 5. b3 Nbd7 6. Bb2 Bd6 7. Bd3 Qc7 8. 0-0 e5 9. dxe5 Nxe5 10. Nxe5 Bxe5 11. Bxe5 Qxe5 12. e4 dxe4 13. Nxe4 Bd7 14. Nxf6+ Qxf6 15. Re1+ Be6 16. Bb5+ Kf8 17. Qd6+ Qe7 18. Qe5 h5 19. Rad1 b6 20. Rd7 Qf6 21. Rxa7 Qxe5 22. Rxa8+ Ke7 23. Rxe5 Rxa8 24. a4 Kf6 25. Re3 Rd8 26. Kf1 Rd2 27. Bd3 Rd1+ 28. Re1 Rd2 29. Rb1 Bf5 30. Ke1 Rxc2 31. Bxc2 Bxc2 32. Rb2 Be4 33. f3 Bc6 34. Kd2 Ke5 35. Ke3 h4 36. Rc2 Bd5 37. a5 bxa5 38. Rxc5 h3 39. g4 Ke6 40. Rb5 g5 41. Rxa5 Bxb3 42. Rxg5 1-0

[Event "Staufer op 34th"]
[Site "Schwaebisch Gmuend"]
[Date "2024.01.03"]
[Round "3"]
[White "Koellner, Ruben Gideon"]
[Black "Knudsen, Simon"]
[Result "0-1"]
[ECO "D05"]
[WhiteElo "2482"]
[BlackElo "2213"]
[PlyCount "100"]
[EventDate "2024.01.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB02_2024"]
[SourceDate "2024.01.10"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.10"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c3 e6 4. Nbd2 c5 5. e3 Nc6 6. Bd3 Bd6 7. 0-0 0-0 8. dxc5 Bxc5 9. b4 Bb6 10. b5 Na5 11. Ba3 Re8 12. Qe2 e5 13. e4 Nh5 14. Bc2 Nf4 15. Qd1 Bg4 16. exd5 f5 17. Re1 e4 18. Nxe4 fxe4 19. Bxe4 Qf6 20. d6 Kh8 21. Bb4 Rxe4 22. Rxe4 Nh3+ 23. Kf1 Nxf2 24. Qe2 Nxe4 25. Qxe4 Bd7 26. a4 Re8 27. Qd5 Be6 28. Re1 Bxd5 29. Rxe8+ Bg8 30. d7 h6 31. Bc5 Qf5 32. Bxb6 Qxd7 33. Rd8 Qe7 34. Bxa5 b6 35. Rxg8+ Kxg8 36. Bb4 Qe6 37. Nd4 Qa2 38. h3 Kf7 39. Kg1 Kf6 40. Kh2 g6 41. Kg3 Qxa4 42. Kh2 Ke5 43. Kg3 Ke4 44. h4 h5 45. Bd6 Qd1 46. Kh2 Qe1 47. Bg3 Qxc3 48. Nc6 Qa1 49. Bb8 a6 50. Be5 Qa4 0-1

[Event "Staufer op 34th"]
[Site "Schwaebisch Gmuend"]
[Date "2024.01.03"]
[Round "4"]
[White "Lesny, Florian"]
[Black "Koellner, Ruben Gideon"]
[Result "1/2-1/2"]
[ECO "C41"]
[WhiteElo "2196"]
[BlackElo "2482"]
[PlyCount "159"]
[EventDate "2024.01.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB02_2024"]
[SourceDate "2024.01.10"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.10"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. 0-0 Nb6 7. Bd3 Nfd7 8. a4 a5 9. Be3 c6 10. Qd2 0-0 11. Rad1 Bf6 12. b3 Re8 13. Rfe1 Qc7 14. Bf1 g6 15. d5 Be7 16. Bg5 Bf8 17. h3 Nc5 18. Be3 Na6 19. Nh2 Nb4 20. dxc6 bxc6 21. f4 Nd7 22. Nf3 exf4 23. Bxf4 Ne5 24. Nxe5 dxe5 25. Be3 Na6 26. Qf2 Bb4 27. Bd2 Bc5 28. Be3 Bb4 29. Bd2 Rd8 30. Kh1 Be6 31. Nb1 Bc5 32. Be3 Rxd1 33. Rxd1 Qb6 34. Bxc5 Nxc5 35. Nd2 Nxa4 36. Qxb6 Nxb6 37. Nf3 Nd7 38. Bc4 Bxc4 39. Rxd7 Be6 40. Rd6 c5 41. Nxe5 c4 42. Nxc4 Bxc4 43. bxc4 a4 44. c5 a3 45. Rd1 a2 46. Ra1 Kf8 47. Kg1 Ke7 48. Kf2 Ra3 49. Ke2 Kd7 50. Kd2 Kc6 51. Kc1 Kxc5 52. Kb2 Rg3 53. Rxa2 Rxg2 54. Ra7 Rh2 55. Rxf7 Rxh3 56. Rd7 Kc6 57. Rd2 g5 58. e5 g4 59. e6 Re3 60. Rh2 Kd6 61. Rxh7 Kxe6 62. Rg7 Kf5 63. c3 Kf4 64. Kb3 g3 65. Kb4 Kf3 66. c4 Re4 67. Kb5 Rg4 68. Rf7+ Ke2 69. Ra7 g2 70. Ra1 g1Q 71. Rxg1 Rxg1 72. c5 Kd3 73. c6 Kd4 74. c7 Rc1 75. Kb6 Kd5 76. Kb7 Rb1+ 77. Ka7 Rc1 78. Kb7 Kd6 79. c8Q Rxc8 80. Kxc8 1/2-1/2

[Event "Staufer op 34th"]
[Site "Schwaebisch Gmuend"]
[Date "2024.01.02"]
[Round "1"]
[White "Koellner, Ruben Gideon"]
[Black "Lenz, Jonas"]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "2482"]
[BlackElo "2154"]
[PlyCount "43"]
[EventDate "2024.01.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB02_2024"]
[SourceDate "2024.01.10"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.10"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 c5 4. f3 Qa5+ 5. c3 Nf6 6. d5 Qb6 7. Bc1 e6 8. e4 c4 9. Bxc4 Bc5 10. Ne2 exd5 11. exd5 0-0 12. b4 Bd6 13. Qd4 Qc7 14. Bf4 Re8 15. Bxd6 Qxd6 16. Nd2 a5 17. Ne4 Nxe4 18. fxe4 axb4 19. 0-0 Na6 20. cxb4 Nxb4 21. Nc3 Qg6 22. Bb3 1-0

[Event "Staufer op 34th"]
[Site "Schwaebisch Gmuend"]
[Date "2024.01.02"]
[Round "2"]
[White "Kolbus, Dietmar"]
[Black "Koellner, Ruben Gideon"]
[Result "0-1"]
[ECO "D37"]
[WhiteElo "2222"]
[BlackElo "2482"]
[PlyCount "106"]
[EventDate "2024.01.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB02_2024"]
[SourceDate "2024.01.10"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.10"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. e3 Nbd7 5. Nc3 a6 6. b3 b6 7. Bb2 Bb7 8. Be2 Bd6 9. 0-0 0-0 10. Rc1 Qe7 11. Qc2 Rac8 12. Qb1 Ne4 13. Nxe4 dxe4 14. Nd2 f5 15. c5 bxc5 16. dxc5 Bxc5 17. Nc4 Bd5 18. Ne5 Nxe5 19. Bxe5 a5 20. Qa1 Bd6 21. Rc2 Bxe5 22. Qxe5 Qd6 23. Qc3 Qb4 24. Qc5 c6 25. Rfc1 Ra8 26. Qc3 Qxc3 27. Rxc3 a4 28. Bc4 axb3 29. Bxb3 Kf7 30. g4 fxg4 31. Rxc6 Bxc6 32. Rxc6 Rfe8 33. Rc4 Kf6 34. Rxe4 h5 35. h3 gxh3 36. Rh4 g5 37. Rxh3 Rh8 38. Kg2 g4 39. Rh1 e5 40. f3 Kg5 41. Rb1 Rab8 42. Rb2 Rhf8 43. fxg4 hxg4 44. Re2 Rb6 45. Bd5 Rfb8 46. Bb3 Rh8 47. Bd5 Rd6 48. Be4 Rhd8 49. a4 Rd2 50. Kf1 Rf8+ 51. Ke1 Rxe2+ 52. Kxe2 g3 53. Kd3 Rf2 0-1

[Event "Titled Tuesday intern op 19th Dec Early"]
[Site "Chess.com INT"]
[Date "2023.12.19"]
[Round "9"]
[White "Dinu, Dumitru Daniel"]
[Black "Koellner, Ruben Gideon"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "2190"]
[BlackElo "2490"]
[PlyCount "64"]
[EventDate "2023.12.19"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB52_2023"]
[SourceDate "2023.12.27"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.27"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. 0-0 c6 7. a4 h6 8. Qe2 Qc7 9. h3 Nf8 10. Rd1 g5 11. Be3 Ng6 12. dxe5 dxe5 13. Nh2 Nf4 14. Qd2 Kf8 15. f3 Rg8 16. Ne2 h5 17. h4 Nxe2+ 18. Bxe2 gxh4 19. Bh6+ Ke8 20. Bg5 Nxe4 21. fxe4 Bxg5 22. Qd3 Bf4 23. Bxh5 Rg3 24. Qc4 h3 25. Bf3 hxg2 26. Bxg2 Bh3 27. Qe2 Rxg2+ 28. Qxg2 Bxg2 29. Kxg2 Ke7 30. Nf3 Rg8+ 31. Kf1 Qb6 32. b3 Qe3 0-1

[Event "Titled Tuesday intern op 19th Dec Early"]
[Site "Chess.com INT"]
[Date "2023.12.19"]
[Round "1"]
[White "Kahlert, Thomas"]
[Black "Koellner, Ruben Gideon"]
[Result "0-1"]
[ECO "A21"]
[WhiteElo "2110"]
[BlackElo "2490"]
[PlyCount "76"]
[EventDate "2023.12.19"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB52_2023"]
[SourceDate "2023.12.27"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.27"]
[SourceQuality "1"]

1. c4 d6 2. Nf3 e5 3. Nc3 f5 4. d4 e4 5. Ng5 Nf6 6. g3 d5 7. cxd5 Nxd5 8. Bg2 Be7 9. Nh3 Be6 10. 0-0 0-0 11. Nf4 Nxf4 12. Bxf4 Bd6 13. Qd2 Bxf4 14. Qxf4 c6 15. Rfd1 Nd7 16. f3 exf3 17. exf3 Nf6 18. Re1 Qd7 19. Rad1 Rae8 20. a3 Bb3 21. Rc1 Nd5 22. Qd2 Nxc3 23. Rxc3 Bd5 24. f4 Rxe1+ 25. Qxe1 Bxg2 26. Kxg2 Qxd4 27. Qe6+ Kh8 28. Re3 Qxb2+ 29. Re2 Qxa3 30. Qd7 b5 31. Qxc6 a6 32. Re8 h6 33. Qc8 Rxe8 34. Qxe8+ Kh7 35. Qe6 Qc5 36. Qxa6 Qc2+ 37. Kh3 b4 38. Qb5 b3 0-1

[Event "Titled Tuesday intern op 19th Dec Early"]
[Site "Chess.com INT"]
[Date "2023.12.19"]
[Round "10"]
[White "Koellner, Ruben Gideon"]
[Black "Asish, Panda"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "2490"]
[BlackElo "1773"]
[PlyCount "76"]
[EventDate "2023.12.19"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB52_2023"]
[SourceDate "2023.12.27"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.27"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. e3 e6 4. Nbd2 Bd6 5. Ne5 0-0 6. f4 c5 7. c3 Ne4 8. Nxe4 dxe4 9. Be2 cxd4 10. Qxd4 f5 11. 0-0 Bxe5 12. Qxe5 Nc6 13. Qc5 Qd5 14. Qxd5 exd5 15. b3 Be6 16. Bb2 Rac8 17. Rfd1 Rfd8 18. Rd2 Kf7 19. Rad1 a6 20. Kf2 g6 21. h3 h5 22. Kg3 Rd7 23. c4 Rcd8 24. c5 Rc8 25. a3 a5 26. Bb5 Rdc7 27. Be5 Nxe5 28. fxe5 Rxc5 29. Be2 Rc3 30. Kf4 Rxb3 31. Rxd5 Bxd5 32. Rxd5 Rb2 33. Bb5 Rc7 34. Kg3 b6 35. a4 Ke6 36. Rd6+ Kxe5 37. Rxg6 Rb3 38. Kh4 Rxe3 0-1

[Event "Titled Tuesday intern op 19th Dec Early"]
[Site "Chess.com INT"]
[Date "2023.12.19"]
[Round "4"]
[White "Koellner, Ruben Gideon"]
[Black "Caceres Benitez, Arturo Eduardo"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2490"]
[BlackElo "2172"]
[PlyCount "53"]
[EventDate "2023.12.19"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB52_2023"]
[SourceDate "2023.12.27"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.27"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Nbd2 Bg7 4. e4 d6 5. Bc4 0-0 6. 0-0 c6 7. Bb3 Nfd7 8. c3 Na6 9. Re1 Nc7 10. e5 d5 11. Nf1 e6 12. h4 Re8 13. h5 c5 14. N1h2 b5 15. Ng4 a5 16. Bc2 b4 17. Bg5 f6 18. exf6 Nxf6 19. hxg6 h5 20. Nxf6+ Bxf6 21. Bf4 Nb5 22. Ne5 Bxe5 23. Rxe5 bxc3 24. Qxh5 Ra7 25. bxc3 Nxc3 26. Re3 cxd4 27. Be5 1-0

[Event "Titled Tuesday intern op 19th Dec Early"]
[Site "Chess.com INT"]
[Date "2023.12.19"]
[Round "5"]
[White "Koellner, Ruben Gideon"]
[Black "Khamdamova, Afruza"]
[Result "1-0"]
[ECO "D05"]
[WhiteElo "2490"]
[BlackElo "2327"]
[PlyCount "87"]
[EventDate "2023.12.19"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB52_2023"]
[SourceDate "2023.12.27"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.27"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. e3 e6 4. Nbd2 c5 5. c3 Nc6 6. Bd3 Be7 7. 0-0 0-0 8. Ne5 Qc7 9. f4 b6 10. Qf3 Bb7 11. g4 Rad8 12. g5 Nxe5 13. fxe5 Ne4 14. Nxe4 dxe4 15. Bxe4 Bxe4 16. Qxe4 Bxg5 17. Kh1 Kh8 18. Rg1 Bh6 19. Rg2 f6 20. exf6 Rxf6 21. Bd2 cxd4 22. exd4 Bxd2 23. Rxd2 Rdf8 24. Rg1 Qf7 25. Rdg2 g6 26. Qe5 Kg8 27. Re2 Qb7+ 28. Qe4 Qa6 29. h4 Qa5 30. Rg5 Rf1+ 31. Kg2 Qxa2 32. h5 Qa1 33. Qxe6+ Kh8 34. Qe5+ Kg8 35. Qd5+ Kh8 36. hxg6 Rg1+ 37. Kh2 Rxg5 38. Qxg5 hxg6 39. Qh6+ Kg8 40. Qxg6+ Kh8 41. Qh6+ Kg8 42. Rg2+ Kf7 43. Rg7+ Ke8 44. Qe6+ 1-0

[Event "Titled Tuesday intern op 19th Dec Early"]
[Site "Chess.com INT"]
[Date "2023.12.19"]
[Round "7"]
[White "Koellner, Ruben Gideon"]
[Black "Kravtsiv, Martyn"]
[Result "0-1"]
[ECO "A47"]
[WhiteElo "2490"]
[BlackElo "2598"]
[PlyCount "126"]
[EventDate "2023.12.19"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB52_2023"]
[SourceDate "2023.12.27"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.27"]
[SourceQuality "1"]

1. d4 e6 2. Nf3 Nf6 3. Nbd2 c5 4. e3 b6 5. c3 Bb7 6. Bd3 Be7 7. 0-0 0-0 8. e4 d6 9. Qe2 Nbd7 10. Rd1 Qc7 11. Nf1 e5 12. d5 Rfe8 13. Ne3 Bf8 14. a4 g6 15. g3 Bg7 16. Nd2 Rad8 17. b4 Nb8 18. Ndc4 Bc8 19. Na3 Nh5 20. a5 Nf4 21. gxf4 exf4 22. Nec4 cxb4 23. Nb5 Qe7 24. Nbxd6 Rxd6 25. Bxf4 Rdd8 26. Bxb8 Bxc3 27. Rac1 Rxd5 28. exd5 Qg5+ 29. Bg3 Rxe2 30. Bxe2 bxa5 31. Nxa5 h5 32. h4 Qf6 33. d6 Bd7 34. Bf1 g5 35. Bg2 gxh4 36. Bh2 Qg5 37. Kh1 Qxa5 38. Rg1 Kh8 39. Rcd1 b3 40. Rd5 Qb4 41. Rxh5+ Kg7 42. Bc6+ Bg4 43. f3 b2 44. Rxg4+ Qxg4 45. fxg4 b1Q+ 46. Kg2 Qc2+ 47. Kh3 Bf6 48. g5 Qxc6 49. gxf6+ Kg6 50. Rxh4 Qf3+ 51. Bg3 Qh1+ 52. Kg4 Qd1+ 53. Kh3 a5 54. Rg4+ Kxf6 55. Rf4+ Ke6 56. Rh4 a4 57. Rh6+ f6 58. Rh7 Qh1+ 59. Bh2 Qf1+ 60. Kh4 Qc4+ 61. Kh3 Qd3+ 62. Bg3 Qxh7+ 63. Kg2 Qd7 0-1

[Event "Titled Tuesday intern op 19th Dec Early"]
[Site "Chess.com INT"]
[Date "2023.12.19"]
[Round "2"]
[White "Koellner, Ruben Gideon"]
[Black "Smolka, Marcin"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "2490"]
[BlackElo "2190"]
[PlyCount "144"]
[EventDate "2023.12.19"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB52_2023"]
[SourceDate "2023.12.27"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.27"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. Nbd2 e6 4. e3 a6 5. Bd3 Bd6 6. 0-0 c5 7. c3 0-0 8. dxc5 Bxc5 9. b4 Ba7 10. Bb2 Nc6 11. a3 e5 12. e4 d4 13. cxd4 Nxd4 14. Nxe5 Qc7 15. Nef3 Rd8 16. Nxd4 Bxd4 17. Bxd4 Rxd4 18. Nf3 Bg4 19. e5 Bxf3 20. Qxf3 Qxe5 21. Qxb7 Rad8 22. Bxa6 Rh4 23. g3 Re4 24. Rad1 Rb8 25. Qc6 Re8 26. Bb7 Qh5 27. Qc5 R4e5 28. Qc6 Re4 29. Qxe4 Nxe4 30. Bxe4 g5 31. Bg2 g4 32. a4 Re6 33. b5 Rh6 34. Rd8+ Kg7 35. Rfd1 Qxh2+ 36. Kf1 Qh5 37. R8d5 Qg6 38. Rd6 Qc2 39. R6d2 Qc4+ 40. Kg1 Qxa4 41. Bc6 Qb4 42. Rd4 Qb3 43. Rxg4+ Rg6 44. Rxg6+ hxg6 45. Re1 Kf6 46. Re3 Qb1+ 47. Kg2 Kg5 48. Re5+ f5 49. Re3 Kf6 50. Rc3 Qb4 51. Rd3 Ke5 52. Rd5+ Ke6 53. Rd8 g5 54. Rd3 f4 55. gxf4 gxf4 56. Bd5+ Ke5 57. Rb3 Qd4 58. Bc6 Qb6 59. Kf3 Kf5 60. Rd3 Ke5 61. Rd5+ Ke6 62. Rd2 Ke5 63. Rd5+ Ke6 64. Rh5 Qd4 65. Rh2 Ke5 66. Rh5+ Ke6 67. Rh6+ Ke5 68. Rh7 Qd3+ 69. Kg2 Qxh7 70. b6 Qg6+ 71. Kf3 Qxc6+ 72. Kg4 Qxb6 0-1

[Event "Titled Tuesday intern op 19th Dec Early"]
[Site "Chess.com INT"]
[Date "2023.12.19"]
[Round "3"]
[White "Manukyan, Sargis V"]
[Black "Koellner, Ruben Gideon"]
[Result "1/2-1/2"]
[ECO "A10"]
[WhiteElo "2253"]
[BlackElo "2490"]
[PlyCount "44"]
[EventDate "2023.12.19"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB52_2023"]
[SourceDate "2023.12.27"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.27"]
[SourceQuality "1"]

1. c4 a6 2. d4 b5 3. cxb5 axb5 4. e4 b4 5. Nf3 Bb7 6. Bd3 e6 7. 0-0 Nf6 8. Qe2 Be7 9. h4 h6 10. Nbd2 d6 11. Rd1 Nbd7 12. e5 Nd5 13. Nc4 dxe5 14. Ncxe5 0-0 15. Nxd7 Qxd7 16. Ne5 Qc8 17. Bxh6 gxh6 18. Qg4+ Kh8 19. Qh5 Kg7 20. Qg4+ Kh8 21. Qh5 Kg7 22. Qg4+ Kh8 1/2-1/2

[Event "Titled Tuesday intern op 19th Dec Early"]
[Site "Chess.com INT"]
[Date "2023.12.19"]
[Round "8"]
[White "Martinez Reyes, Pedro Ramon"]
[Black "Koellner, Ruben Gideon"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "2342"]
[BlackElo "2490"]
[PlyCount "113"]
[EventDate "2023.12.19"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB52_2023"]
[SourceDate "2023.12.27"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.27"]
[SourceQuality "1"]

1. Nf3 a6 2. g3 b5 3. Bg2 Bb7 4. 0-0 e6 5. d3 Nf6 6. e4 Be7 7. e5 Nd5 8. c4 bxc4 9. dxc4 Nb6 10. Qe2 c5 11. Nc3 Nc6 12. Rd1 Qc7 13. Bf4 h6 14. h4 Rg8 15. h5 0-0-0 16. Ne4 Kb8 17. Nd6 Bxd6 18. exd6 Qc8 19. Qe3 e5 20. Qxc5 exf4 21. Qxb6 fxg3 22. fxg3 Rde8 23. Re1 Qd8 24. Qc5 Qa5 25. Qxa5 Nxa5 26. b3 Bxf3 27. Bxf3 Nb7 28. Kf2 Nxd6 29. Red1 Kc7 30. Rd5 Ne4+ 31. Kg2 d6 32. Ra5 Kb6 33. b4 Nd2 34. Bd5 Re2+ 35. Kh3 Rge8 36. Rc1 R8e5 37. Bxf7 Rxa5 38. bxa5+ Kxa5 39. c5 dxc5 40. Rxc5+ Kb4 41. Rc7 Nf3 42. Rb7+ Kc5 43. Bb3 Ng5+ 44. Kg4 Re4+ 45. Kf5 Re3 46. g4 Rf3+ 47. Kg6 Rf4 48. Kxg7 Rxg4 49. Kxh6 Ne4 50. Rf7 Kd4 51. Kh7 Ke5 52. h6 Nf6+ 53. Rxf6 Kxf6 54. Kh8 Rd4 55. h7 Rd8+ 56. Bg8 Kg6 57. a4 1-0

[Event "Titled Tuesday intern op 19th Dec Early"]
[Site "Chess.com INT"]
[Date "2023.12.19"]
[Round "6"]
[White "Nilsson, Joakim"]
[Black "Koellner, Ruben Gideon"]
[Result "0-1"]
[ECO "A46"]
[WhiteElo "2158"]
[BlackElo "2490"]
[PlyCount "78"]
[EventDate "2023.12.19"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB52_2023"]
[SourceDate "2023.12.27"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.27"]
[SourceQuality "1"]

1. d4 d6 2. Nf3 Nf6 3. c3 Nbd7 4. Bg5 e5 5. Nbd2 Be7 6. e4 h6 7. Bh4 exd4 8. Nxd4 Nxe4 9. Nxe4 Bxh4 10. Qh5 0-0 11. Bd3 Nf6 12. Nxf6+ Bxf6 13. 0-0-0 Bxd4 14. cxd4 Qg5+ 15. Qxg5 hxg5 16. Rhe1 Be6 17. Kb1 c6 18. Re3 Rfe8 19. Rg3 f6 20. Bg6 Bf7 21. Bc2 Re2 22. Re3 Re8 23. Rxe8+ Bxe8 24. Rf1 Rd2 25. d5 c5 26. Kc1 Rd4 27. Re1 Kf8 28. Re6 Rxd5 29. Bb3 Rd4 30. Re3 Bf7 31. Bc2 d5 32. Rb3 b6 33. Ra3 a5 34. Rb3 Rb4 35. Re3 d4 36. Re1 Bxa2 37. b3 Bxb3 38. Bg6 Bf7 39. Bf5 g6 0-1

