[Event "Titled Tuesday intern op 02nd Apr Early"]
[Site "Chess.com INT"]
[Date "2024.04.02"]
[Round "2"]
[White "Ernst, Sipke"]
[Black "Larina, Marija"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "2523"]
[BlackElo "1969"]
[PlyCount "109"]
[EventDate "2024.04.02"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB15_2024"]
[SourceDate "2024.04.10"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.10"]
[SourceQuality "1"]

1. Nf3 f5 2. d3 Nc6 3. e4 d6 4. Nc3 e5 5. g3 Nf6 6. Bg2 Be7 7. exf5 Bxf5 8. d4 exd4 9. Nxd4 Nxd4 10. Qxd4 c6 11. 0-0 0-0 12. Qa4 d5 13. Bf4 Bd6 14. Bxd6 Qxd6 15. Rad1 Bg4 16. Rd4 Be6 17. b4 a6 18. Qb3 Rae8 19. a4 Bd7 20. Rd2 Kh8 21. b5 axb5 22. axb5 Qc5 23. Na4 Qxb5 24. Qxb5 cxb5 25. Nc3 Bc6 26. Nxd5 Bxd5 27. Bxd5 Nxd5 28. Rxd5 Re2 29. Rxb5 Rxc2 30. Rxb7 h6 31. h4 h5 32. Rb5 g6 33. Rb7 Re2 34. Kg2 Rd2 35. Rb3 Kg7 36. Re3 Rf7 37. Re6 Rc2 38. Rd6 Rb2 39. Rc6 Ra2 40. Rcc1 Rd2 41. Rce1 Rc2 42. Re3 Rd2 43. Rf3 Re7 44. Ra1 Rc2 45. Ra6 Rce2 46. Rff6 Kh7 47. Rxg6 Rf7 48. Rh6+ Kg7 49. Rag6+ Kf8 50. Rf6 Kg7 51. Rhg6+ Kf8 52. Rxf7+ Kxf7 53. Rg5 Kf6 54. Rxh5 Kg6 55. Rg5+ 1-0

[Event "Titled Tuesday intern op 02nd Apr Early"]
[Site "Chess.com INT"]
[Date "2024.04.02"]
[Round "5"]
[White "Ernst, Sipke"]
[Black "Le, Tuan Minh"]
[Result "0-1"]
[ECO "D12"]
[WhiteElo "2523"]
[BlackElo "2567"]
[PlyCount "60"]
[EventDate "2024.04.02"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB15_2024"]
[SourceDate "2024.04.10"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bf5 5. Nc3 e6 6. Nh4 Be4 7. f3 Bg6 8. Qb3 Qc7 9. Bd2 Be7 10. Nxg6 hxg6 11. 0-0-0 a6 12. Kb1 dxc4 13. Qxc4 b5 14. Qd3 c5 15. dxc5 Bxc5 16. Rc1 Nbd7 17. h4 0-0 18. h5 gxh5 19. g4 Qg3 20. Qe2 Ne5 21. g5 Qxg5 22. e4 Qg6 23. Nxb5 Nxf3 24. Nc3 Nxd2+ 25. Qxd2 Rfd8 26. Qh2 Bd4 27. Bd3 Qg5 28. Ne2 Be5 29. Qh3 Qd2 30. Rcd1 Qxb2# 0-1

[Event "Titled Tuesday intern op 02nd Apr Early"]
[Site "Chess.com INT"]
[Date "2024.04.02"]
[Round "3"]
[White "Ernst, Sipke"]
[Black "Rustemov, Alexander"]
[Result "1-0"]
[ECO "D27"]
[WhiteElo "2523"]
[BlackElo "2525"]
[PlyCount "115"]
[EventDate "2024.04.02"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB15_2024"]
[SourceDate "2024.04.10"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. 0-0 a6 7. Re1 Nc6 8. Nc3 b5 9. Bf1 cxd4 10. exd4 Be7 11. Ne5 Bb7 12. Qf3 Rc8 13. Qg3 g6 14. Bh6 Qxd4 15. Rad1 Qc5 16. Bg7 Rg8 17. Bxf6 Bxf6 18. Nd7 Qe7 19. Nxf6+ Qxf6 20. Ne4 Qe7 21. Nd6+ Kf8 22. Nxc8 Bxc8 23. a4 bxa4 24. Qc3 Bb7 25. Bxa6 Bxa6 26. Qxc6 Qb7 27. Rd8+ Kg7 28. Qc3+ f6 29. Rxg8+ Kxg8 30. Qxf6 Bc4 31. h4 Bd5 32. h5 gxh5 33. Re5 h6 34. Qxh6 Qxb2 35. Qg6+ Kf8 36. Qf6+ Ke8 37. Rxe6+ Bxe6 38. Qxb2 Kf7 39. Qb4 Bb3 40. Kh2 Kg6 41. Kg3 Kg5 42. Qc5+ Kg6 43. Kf4 Be6 44. Qc6 Kf6 45. Qxa4 h4 46. Qd4+ Kf7 47. Qh8 h3 48. g4 Bd7 49. Qxh3 Ke7 50. Qc3 Kd6 51. f3 Be6 52. g5 Kd7 53. g6 Ke7 54. g7 Kf7 55. Kg5 Kg8 56. Kh6 Kf7 57. g8B+ Kxg8 58. Qg7# 1-0

[Event "Titled Tuesday intern op 02nd Apr Early"]
[Site "Chess.com INT"]
[Date "2024.04.02"]
[Round "4"]
[White "Moroni, Luca Jr"]
[Black "Ernst, Sipke"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "2580"]
[BlackElo "2523"]
[PlyCount "35"]
[EventDate "2024.04.02"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB15_2024"]
[SourceDate "2024.04.10"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.10"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Nf6 3. e3 c5 4. dxc5 e6 5. b4 a5 6. c3 Nc6 7. Bb5 Bd7 8. Qb3 g5 9. Bxg5 Rg8 10. Nf3 h6 11. Bh4 axb4 12. cxb4 Rg4 13. Bxc6 Bxc6 14. b5 Bd7 15. Nbd2 Bxc5 16. 0-0 Rb4 17. Qc3 Be7 18. Bxf6 1-0

[Event "Titled Tuesday intern op 02nd Apr Early"]
[Site "Chess.com INT"]
[Date "2024.04.02"]
[Round "1"]
[White "Seder, Mohamad"]
[Black "Ernst, Sipke"]
[Result "0-1"]
[ECO "C65"]
[WhiteElo "2077"]
[BlackElo "2523"]
[PlyCount "186"]
[EventDate "2024.04.02"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB15_2024"]
[SourceDate "2024.04.10"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. Qe2 Bc5 5. c3 0-0 6. h3 d5 7. d3 dxe4 8. dxe4 Qe7 9. 0-0 Nd8 10. Be3 Nh5 11. Nbd2 Ne6 12. Nb3 Bxe3 13. Qxe3 Nef4 14. Rad1 Qf6 15. Bd7 Nxg2 16. Kxg2 Bxd7 17. Rxd7 Nf4+ 18. Kh2 Qe6 19. Nxe5 Qxe5 20. Qg3 Qb5 21. Rdd1 Ne6 22. Rg1 g6 23. Rd2 Rad8 24. Nd4 Qc4 25. b3 Qa6 26. Rgd1 Nc5 27. Qe3 Rde8 28. f3 f5 29. e5 f4 30. Qe2 Qb6 31. Qc4+ Kh8 32. Re2 Re7 33. Rde1 Rfe8 34. e6 Qd6 35. b4 Na4 36. Nb5 Qb6 37. Nd4 a6 38. Qd5 Nxc3 39. Qe5+ Kg8 40. Rc2 Qxb4 41. Nc6 bxc6 42. Qxc3 Qxc3 43. Rxc3 Rxe6 44. Rec1 Re2+ 45. Kg1 R8e6 46. Rxc6 Rxc6 47. Rxc6 Rxa2 48. Rxc7 h6 49. h4 Ra5 50. Rc4 Rf5 51. Rc6 a5 52. Rxg6+ Kh7 53. Ra6 h5 54. Kf2 Kg7 55. Ke2 Re5+ 56. Kf2 Rb5 57. Rd6 Rb4 58. Kf1 a4 59. Ra6 Kf7 60. Kf2 Ke7 61. Ke2 Kd7 62. Kd3 Kc7 63. Ra5 Kb6 64. Rxh5 a3 65. Rh8 Ra4 66. Rb8+ Kc5 67. Rb1 a2 68. Ra1 Kb4 69. Ke4 Kb3+ 70. Kf5 Kb2 71. Rh1 a1Q 72. Rxa1 Rxa1 73. h5 Kc3 74. Kxf4 Kd4 75. h6 Kd5 76. Kf5 Kd6 77. h7 Rh1 78. Kg6 Ke7 79. Kg7 Rg1+ 80. Kh6 Kf7 81. h8Q Rh1+ 82. Kg5 Rxh8 83. Kf5 Rh6 84. Ke5 Rf6 85. f4 Kg6 86. Ke4 Rf5 87. Ke3 Kh5 88. Kf3 Kh4 89. Ke4 Kg4 90. Ke3 Rxf4 91. Kd3 Kf3 92. Kd2 Rd4+ 93. Ke1 Rd8 0-1

[Event "Bundesliga 2324"]
[Site "Germany"]
[Date "2024.02.24"]
[Round "10.7"]
[White "Ernst, Sipke"]
[Black "Vogel, Roven"]
[Result "1/2-1/2"]
[ECO "E04"]
[WhiteElo "2551"]
[BlackElo "2471"]
[PlyCount "41"]
[EventDate "2023.10.21"]
[EventType "team-tourn"]
[EventRounds "15"]
[EventCountry "GER"]
[SourceTitle "CB09_2024"]
[SourceDate "2024.02.28"]
[SourceVersion "1"]
[SourceVersionDate "2024.02.28"]
[SourceQuality "1"]
[WhiteTeam "Hamburger SK"]
[BlackTeam "Dresden TU"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 a6 6. 0-0 Nc6 7. Bg5 Be7 8. e3 Rb8 9. Nfd2 e5 10. Bxf6 Bxf6 11. d5 Ne7 12. Nxc4 e4 13. d6 Be6 14. Nbd2 Nf5 15. Rc1 Nxd6 16. Nxd6+ Qxd6 17. Nxe4 Qxd1 18. Nxf6+ gxf6 19. Rfxd1 c6 20. a3 Ke7 21. Kf1 1/2-1/2

[Event "Bundesliga 2324"]
[Site "Germany"]
[Date "2024.02.23"]
[Round "9.8"]
[White "Teclaf, Pawel"]
[Black "Ernst, Sipke"]
[Result "1/2-1/2"]
[ECO "A21"]
[WhiteElo "2585"]
[BlackElo "2551"]
[PlyCount "45"]
[EventDate "2023.10.21"]
[EventType "team-tourn"]
[EventRounds "15"]
[EventCountry "GER"]
[SourceTitle "CB09_2024"]
[SourceDate "2024.02.28"]
[SourceVersion "1"]
[SourceVersionDate "2024.02.28"]
[SourceQuality "1"]
[WhiteTeam "Kiel Turm"]
[BlackTeam "Hamburger SK"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. c4 e5 2. d3 d6 3. Nc3 f5 4. g3 Nf6 5. Bg2 Be7 6. b4 c6 7. Nf3 0-0 8. 0-0 Kh8 9. b5 Qc7 10. bxc6 bxc6 11. Rb1 Nbd7 12. Ba3 Nb6 13. Nd2 Be6 14. Nb3 Nbd7 15. Qd2 Rfc8 16. Na4 Nb6 17. Qa5 Nxa4 18. Qxa4 a5 19. c5 d5 20. f4 Ng4 21. Bc1 Rcb8 22. Bd2 Rb5 23. fxe5 1/2-1/2

[Event "Bundesliga 2324"]
[Site "Germany"]
[Date "2024.02.04"]
[Round "8.7"]
[White "Ernst, Sipke"]
[Black "Andersen, Mads"]
[Result "1-0"]
[ECO "D36"]
[WhiteElo "2551"]
[BlackElo "2606"]
[PlyCount "75"]
[EventDate "2023.10.21"]
[EventType "team-tourn"]
[EventRounds "15"]
[EventCountry "GER"]
[SourceTitle "CB06_2024"]
[SourceDate "2024.02.07"]
[SourceVersion "1"]
[SourceVersionDate "2024.02.07"]
[SourceQuality "1"]
[WhiteTeam "Hamburger SK"]
[BlackTeam "Solingen"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Be7 6. e3 h6 7. Bh4 0-0 8. Bd3 c6 9. Qc2 Re8 10. Nf3 Ne4 11. Bxe4 Bxh4 12. Bh7+ Kh8 13. g3 Bf6 14. Bf5 Na6 15. 0-0 Bxf5 16. Qxf5 g6 17. Qc2 Nc7 18. b4 a6 19. a4 Qd6 20. Rab1 Ne6 21. Rfd1 Kg7 22. h4 h5 23. Kg2 Rec8 24. Qb3 Be7 25. e4 dxe4 26. Nxe4 Qc7 27. Nc5 Nf8 28. a5 Rd8 29. Rbc1 Rab8 30. d5 Bxc5 31. Qc3+ Kg8 32. Qxc5 Rd6 33. Ng5 Nd7 34. Qxd6 Qxd6 35. dxc6 Qf8 36. cxd7 Kg7 37. Rc4 Rd8 38. Rf4 1-0

[Event "Bundesliga 2324"]
[Site "Germany"]
[Date "2024.02.03"]
[Round "7.8"]
[White "Zelbel, Patrick"]
[Black "Ernst, Sipke"]
[Result "1-0"]
[ECO "C47"]
[WhiteElo "2471"]
[BlackElo "2551"]
[PlyCount "51"]
[EventDate "2023.10.21"]
[EventType "team-tourn"]
[EventRounds "15"]
[EventCountry "GER"]
[SourceTitle "CB06_2024"]
[SourceDate "2024.02.07"]
[SourceVersion "1"]
[SourceVersionDate "2024.02.07"]
[SourceQuality "1"]
[WhiteTeam "Muelheim Nord"]
[BlackTeam "Hamburger SK"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 5. Nxd4 Bb4 6. Nxc6 bxc6 7. Bd3 0-0 8. 0-0 Re8 9. Bg5 h6 10. Bh4 d5 11. exd5 g5 12. Bg3 cxd5 13. Re1 Rxe1+ 14. Qxe1 c6 15. a3 Bf8 16. Na4 c5 17. c4 Bb7 18. Rd1 Bc6 19. Bc2 Qd7 20. Qa5 Qb7 21. cxd5 Bxd5 22. Qc3 Qc6 23. Be5 Bg7 24. Nxc5 Rc8 25. b4 Bxg2 26. Rd6 1-0

[Event "Titled Tuesday intern op 16th Jan Late"]
[Site "Chess.com INT"]
[Date "2024.01.16"]
[Round "3"]
[White "Ernst, Sipke"]
[Black "Drygalov, Andrey"]
[Result "0-1"]
[ECO "E08"]
[WhiteElo "2535"]
[BlackElo "2475"]
[PlyCount "70"]
[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. c4 e6 3. g3 d5 4. Nf3 Bb4+ 5. Bd2 Be7 6. Bg2 0-0 7. 0-0 Nbd7 8. Qc2 c6 9. Rd1 b6 10. Bf4 Ba6 11. Ne5 Rc8 12. Nc3 Bxc4 13. Nxc4 dxc4 14. e4 b5 15. a4 Qb6 16. axb5 cxb5 17. e5 Ng4 18. h3 Nh6 19. d5 Nc5 20. d6 Bd8 21. Bxh6 gxh6 22. Ne4 Nxe4 23. Bxe4 Rc5 24. Re1 Kg7 25. Bf3 f6 26. exf6+ Rxf6 27. Bg4 Rg5 28. Re2 e5 29. Kg2 Qxd6 30. Rd1 Qc6+ 31. Qe4 Qxe4+ 32. Rxe4 Bb6 33. Rd7+ Rf7 34. Rxf7+ Kxf7 35. h4 Rg7 0-1

[Event "Titled Tuesday intern op 16th Jan Late"]
[Site "Chess.com INT"]
[Date "2024.01.16"]
[Round "2"]
[White "Ernst, Sipke"]
[Black "Zhang, Kendrick Botong"]
[Result "1-0"]
[ECO "E11"]
[WhiteElo "2535"]
[BlackElo "1815"]
[PlyCount "57"]
[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. c4 e6 3. Nf3 Bb4+ 4. Bd2 Bxd2+ 5. Qxd2 b6 6. Nc3 Bb7 7. e3 0-0 8. Bd3 d6 9. 0-0 Nbd7 10. Rfd1 Qe7 11. e4 e5 12. d5 a5 13. Bc2 Nc5 14. Qg5 g6 15. b3 Rfe8 16. a3 Nfd7 17. Qxe7 Rxe7 18. b4 Na6 19. Rab1 Nab8 20. Ba4 Nf6 21. Nd2 Nbd7 22. Bc6 Bxc6 23. dxc6 Nf8 24. Nd5 Nxd5 25. exd5 f5 26. c5 axb4 27. cxd6 cxd6 28. axb4 Rea7 29. Nc4 1-0

[Event "Titled Tuesday intern op 16th Jan Late"]
[Site "Chess.com INT"]
[Date "2024.01.16"]
[Round "5"]
[White "Melkumyan, Hrant"]
[Black "Ernst, Sipke"]
[Result "1-0"]
[ECO "A11"]
[WhiteElo "2640"]
[BlackElo "2535"]
[PlyCount "51"]
[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. c4 c6 2. Nf3 d5 3. g3 Nf6 4. Bg2 g6 5. Qb3 Bg7 6. 0-0 0-0 7. d3 Qb6 8. Be3 dxc4 9. Qxc4 Qxb2 10. Bd4 Qb5 11. Qxb5 cxb5 12. Nc3 Bd7 13. Ne5 Nc6 14. Nxd7 Nxd7 15. Bxg7 Kxg7 16. Nxb5 Rfc8 17. Rfc1 a6 18. Nc3 Rab8 19. Rab1 Nf6 20. Kf1 Na5 21. a4 e6 22. e3 h5 23. Ke2 Ne8 24. Ne4 Kf8 25. Nc5 Nd6 26. Nd7+ 1-0

[Event "Titled Tuesday intern op 16th Jan Late"]
[Site "Chess.com INT"]
[Date "2024.01.16"]
[Round "4"]
[White "Parfenov, Viktor N"]
[Black "Ernst, Sipke"]
[Result "0-1"]
[ECO "D15"]
[WhiteElo "2193"]
[BlackElo "2535"]
[PlyCount "42"]
[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. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e4 b5 6. Be2 e6 7. 0-0 Be7 8. e5 Nd5 9. Ne4 Nd7 10. a4 Bb7 11. b3 0-0 12. bxc4 bxc4 13. Bxc4 c5 14. Ba3 N5b6 15. Bd3 cxd4 16. a5 Bxa3 17. Rxa3 Nc4 18. Ra4 Nb2 19. Qb3 Bxe4 20. Bxe4 Nxa4 21. Qxa4 Nc5 0-1

[Event "Titled Tuesday intern op 16th Jan Late"]
[Site "Chess.com INT"]
[Date "2024.01.16"]
[Round "1"]
[White "Zhukov, Maksim"]
[Black "Ernst, Sipke"]
[Result "0-1"]
[ECO "C49"]
[WhiteElo "1835"]
[BlackElo "2535"]
[PlyCount "70"]
[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 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. 0-0 0-0 6. Bxc6 dxc6 7. d3 Bxc3 8. bxc3 Nd7 9. Ba3 Re8 10. h3 b6 11. Nd2 c5 12. f4 exf4 13. Rxf4 Ne5 14. Qf1 Be6 15. Rf2 Qd7 16. Nf3 Nxf3+ 17. Rxf3 Qa4 18. Bc1 Qxc2 19. Qe1 Rad8 20. d4 Bd5 21. Bg5 Rxe4 22. Qg3 Rde8 23. Bf6 g6 24. Qxc7 Re2 25. Qg3 Bxf3 26. gxf3 Qd2 27. Be5 f6 28. f4 fxe5 29. fxe5 cxd4 30. Rf1 Qe3+ 31. Qxe3 dxe3 32. Rd1 Rd2 33. Re1 Rxe5 34. c4 Rg5+ 35. Kf1 Rf2# 0-1

[Event "BIH-chT 21st"]
[Site "Sarajevo"]
[Date "2023.11.08"]
[Round "9.2"]
[White "Burovic, Rijad"]
[Black "Ernst, Sipke"]
[Result "1/2-1/2"]
[ECO "C00"]
[WhiteElo "2430"]
[BlackElo "2541"]
[PlyCount "16"]
[EventDate "2023.10.31"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "BIH"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]
[WhiteTeam "Sarajevo Napredak"]
[BlackTeam "Konjic Igman"]
[WhiteTeamCountry "BIH"]
[BlackTeamCountry "BIH"]

1. e4 c5 2. d3 e6 3. g3 d5 4. Nd2 Nc6 5. Bg2 Nf6 6. Ngf3 Be7 7. 0-0 0-0 8. Re1 Qc7 1/2-1/2

[Event "BIH-chT 21st"]
[Site "Sarajevo"]
[Date "2023.11.06"]
[Round "7.2"]
[White "Ernst, Sipke"]
[Black "Brkic, Ante"]
[Result "1/2-1/2"]
[ECO "D38"]
[WhiteElo "2541"]
[BlackElo "2622"]
[PlyCount "59"]
[EventDate "2023.10.31"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "BIH"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]
[WhiteTeam "Konjic Igman"]
[BlackTeam "Cazin"]
[WhiteTeamCountry "BIH"]
[BlackTeamCountry "BIH"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. cxd5 exd5 6. Bf4 Ne4 7. Rc1 Nd7 8. h4 0-0 9. e3 Ndf6 10. Bd3 Bf5 11. Ne5 c6 12. a3 Nxc3 13. bxc3 Bxd3 14. cxb4 Bc4 15. Bg5 a5 16. Bxf6 Qxf6 17. Nxc4 dxc4 18. Rxc4 axb4 19. axb4 Ra2 20. 0-0 Qxh4 21. Qb3 Ra6 22. d5 Qf6 23. b5 Rb6 24. Rc5 g6 25. Rfc1 cxd5 26. Qxd5 Qe6 27. Qxe6 Rxe6 28. Rd5 Rfe8 29. Rc7 R8e7 30. Rxe7 1/2-1/2

[Event "BIH-chT 21st"]
[Site "Sarajevo"]
[Date "2023.11.05"]
[Round "6.2"]
[White "Sinanovic, Muhamed"]
[Black "Ernst, Sipke"]
[Result "0-1"]
[ECO "A13"]
[WhiteElo "2302"]
[BlackElo "2541"]
[PlyCount "72"]
[EventDate "2023.10.31"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "BIH"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]
[WhiteTeam "Busovaca Hrasno"]
[BlackTeam "Konjic Igman"]
[WhiteTeamCountry "BIH"]
[BlackTeamCountry "BIH"]

1. c4 e6 2. g3 d5 3. Bg2 d4 4. Nf3 Nc6 5. 0-0 Bc5 6. e3 Nge7 7. b3 0-0 8. Ba3 Bxa3 9. Nxa3 e5 10. exd4 exd4 11. d3 Ng6 12. Nc2 a5 13. a3 Bf5 14. Re1 Qf6 15. Qd2 h6 16. h4 Rad8 17. b4 Nge5 18. b5 Nxf3+ 19. Bxf3 Ne5 20. Rxe5 Qxe5 21. Bxb7 Rfe8 22. Bf3 Qf6 23. Ne1 Re7 24. Ng2 g5 25. Rd1 Rde8 26. Qxa5 Bh3 27. Bc6 Re2 28. Rf1 R8e7 29. Qa8+ Kg7 30. hxg5 hxg5 31. a4 Bf5 32. Rd1 Be4 33. Bxe4 Qxf2+ 34. Kh2 Re6 35. Kh3 f5 36. Bxf5 Qxf5+ 0-1

[Event "BIH-chT 21st"]
[Site "Sarajevo"]
[Date "2023.11.04"]
[Round "5.2"]
[White "Ernst, Sipke"]
[Black "Can, Isik"]
[Result "1-0"]
[ECO "D85"]
[WhiteElo "2541"]
[BlackElo "2507"]
[PlyCount "125"]
[EventDate "2023.10.31"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "BIH"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]
[WhiteTeam "Konjic Igman"]
[BlackTeam "Sarajevo Bosna"]
[WhiteTeamCountry "BIH"]
[BlackTeamCountry "BIH"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Qa4+ Nd7 8. Nf3 0-0 9. Be2 Nb6 10. Qa5 Bd7 11. Rb1 Na4 12. Rxb7 c5 13. Qxd8 Rfxd8 14. Bd2 Rab8 15. Rb3 Be6 16. d5 Bg4 17. c4 Rxb3 18. axb3 Nc3 19. Bd3 Rb8 20. Bc2 f5 21. Bf4 Rb6 22. Ne5 g5 23. Bg3 Nxe4 24. Nxg4 Nxg3 25. hxg3 fxg4 26. Bxh7+ Kf8 27. Bc2 e6 28. Ke2 exd5 29. cxd5 a5 30. Rh5 Bf6 31. Rh6 Kf7 32. Rh7+ Bg7 33. Rh1 Ke7 34. Rh5 Kf6 35. f4 gxf3+ 36. gxf3 Rb4 37. f4 gxf4 38. Rf5+ Ke7 39. Rxf4 Rb8 40. Rg4 Bf6 41. Re4+ Kf7 42. g4 Rh8 43. Rf4 Ke7 44. Re4+ Kf7 45. Kd3 Rh3+ 46. Re3 Rh4 47. Bd1 Bd4 48. Re6 Rh1 49. Kd2 Rh3 50. Rb6 Ke7 51. Be2 Be3+ 52. Kc2 Bf4 53. Re6+ Kd8 54. Bb5 Kc7 55. Rc6+ Kb7 56. Ba6+ Ka7 57. Bc4 Rg3 58. Be2 Be3 59. d6 Kb7 60. d7 Bg5 61. Rxc5 Be7 62. Rc8 Rg2 63. Kd3 1-0

[Event "BIH-chT 21st"]
[Site "Sarajevo"]
[Date "2023.11.03"]
[Round "4.2"]
[White "Marjanovic, Dejan"]
[Black "Ernst, Sipke"]
[Result "0-1"]
[ECO "C45"]
[WhiteElo "2372"]
[BlackElo "2541"]
[PlyCount "88"]
[EventDate "2023.10.31"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "BIH"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]
[WhiteTeam "Zenica Napredak"]
[BlackTeam "Konjic Igman"]
[WhiteTeamCountry "BIH"]
[BlackTeamCountry "BIH"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. Bd3 d6 7. 0-0 g6 8. b3 Bg7 9. Bb2 0-0 10. Nd2 Re8 11. Re1 Ng4 12. Bxg7 Kxg7 13. h3 Ne5 14. Nf3 Qf6 15. Nxe5 Rxe5 16. Qd2 g5 17. Re3 Bd7 18. Rf1 Kh8 19. Rg3 Rg8 20. f4 gxf4 21. Rxf4 Qe7 22. Rxg8+ Kxg8 23. Rf3 Rg5 24. Qf4 c5 25. Kf2 Kg7 26. Qxg5+ Qxg5 27. Rg3 Qg6 28. Kf3 Bc6 29. Rxg6+ fxg6 30. Kf4 Kf6 31. h4 h6 32. c3 g5+ 33. hxg5+ hxg5+ 34. Ke3 Ke5 35. Bc2 Be8 36. Bd3 Bg6 37. g3 a5 38. a3 Bh7 39. b4 cxb4 40. cxb4 axb4 41. axb4 Bg6 42. g4 Bh7 43. Bc2 d5 44. Bd3 Bxe4 0-1

[Event "BIH-chT 21st"]
[Site "Sarajevo"]
[Date "2023.11.02"]
[Round "3.2"]
[White "Ernst, Sipke"]
[Black "Saric, Ante"]
[Result "0-1"]
[ECO "D35"]
[WhiteElo "2541"]
[BlackElo "2505"]
[PlyCount "74"]
[EventDate "2023.10.31"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "BIH"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]
[WhiteTeam "Konjic Igman"]
[BlackTeam "Pazaric Bjelasnica"]
[WhiteTeamCountry "BIH"]
[BlackTeamCountry "BIH"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 c6 6. e3 h6 7. Bh4 Be7 8. Bd3 0-0 9. Bg3 Ne8 10. Nf3 Nd6 11. 0-0 Bg4 12. Qc2 Qc8 13. Rac1 Nd7 14. Nd2 Be6 15. b3 a6 16. Ne2 Nf6 17. f3 Nh5 18. Bf2 f5 19. b4 a5 20. bxa5 Rxa5 21. Nb3 Ra3 22. Nc5 Bf7 23. Ng3 Nxg3 24. Bxg3 Nc4 25. Rce1 Bxc5 26. dxc5 Qa8 27. Re2 Qa7 28. Bxc4 dxc4 29. Bd6 Re8 30. e4 fxe4 31. fxe4 c3 32. e5 Rxa2 33. Qf5 Bd5 34. Rc2 Qa4 35. Rxa2 Qxa2 36. Qg6 Bf7 37. Qd3 Bd5 0-1

[Event "BIH-chT 21st"]
[Site "Sarajevo"]
[Date "2023.11.01"]
[Round "2.2"]
[White "Milosevic, Milos"]
[Black "Ernst, Sipke"]
[Result "1/2-1/2"]
[ECO "C70"]
[WhiteElo "2362"]
[BlackElo "2541"]
[PlyCount "74"]
[EventDate "2023.10.31"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "BIH"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]
[WhiteTeam "Bihac"]
[BlackTeam "Konjic Igman"]
[WhiteTeamCountry "BIH"]
[BlackTeamCountry "BIH"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Bc5 5. c3 Nge7 6. d4 exd4 7. cxd4 Bb4+ 8. Nbd2 d5 9. exd5 Qxd5 10. 0-0 0-0 11. Bb3 Qh5 12. h3 Be6 13. Bxe6 fxe6 14. Ne4 Qd5 15. Nc3 Qc4 16. Bg5 Bxc3 17. bxc3 Nd5 18. Re1 Nxc3 19. Rc1 Nxd1 20. Rxc4 Nb2 21. Rc3 Na4 22. Ra3 Nb6 23. Rxe6 Rf5 24. Rc3 Nd5 25. Rb3 Rxf3 26. gxf3 Nxd4 27. Re5 Nxb3 28. Rxd5 c6 29. Rd1 h6 30. Be7 Re8 31. Rd7 Nd4 32. Rxb7 Nxf3+ 33. Kg2 Ne1+ 34. Kg3 Nd3 35. Rc7 a5 36. f4 c5 37. Bxc5 Nxc5 1/2-1/2

[Event "BIH-chT 21st"]
[Site "Sarajevo"]
[Date "2023.10.31"]
[Round "1.2"]
[White "Ernst, Sipke"]
[Black "Draskovic, Luka"]
[Result "0-1"]
[ECO "E01"]
[WhiteElo "2541"]
[BlackElo "2476"]
[PlyCount "36"]
[EventDate "2023.10.31"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "BIH"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]
[WhiteTeam "Konjic Igman"]
[BlackTeam "Sarajevo SK"]
[WhiteTeamCountry "BIH"]
[BlackTeamCountry "BIH"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 h6 5. Nc3 Nc6 6. Ne5 Bd6 7. Nxc6 bxc6 8. c5 Be7 9. f4 Ne4 10. Nxe4 dxe4 11. e3 a5 12. Qc2 f5 13. Bc4 h5 14. Qa4 Kf7 15. b4 Ba6 16. Bxe6+ Kxe6 17. Qxc6+ Kf7 18. b5 Rh6 0-1

[Event "Hoogeveen op 26th"]
[Site "Hoogeveen"]
[Date "2023.10.28"]
[Round "9"]
[White "Ernst, Sipke"]
[Black "Schoorl, Rob"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "2551"]
[BlackElo "2357"]
[PlyCount "101"]
[EventDate "2023.10.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. d4 g6 2. e4 Bg7 3. Nf3 d6 4. Be2 c5 5. c3 Nf6 6. dxc5 dxc5 7. Qxd8+ Kxd8 8. Ng5 Ke8 9. Bc4 e6 10. f3 Nc6 11. Be3 b6 12. Na3 h6 13. Nh3 a6 14. Be2 Nd7 15. Nc4 b5 16. Nd6+ Ke7 17. 0-0-0 Be5 18. Nxc8+ Raxc8 19. f4 Bb8 20. Rd2 Nd4 21. Bd1 Nf6 22. Re1 e5 23. Bf2 Ne6 24. f5 Ng5 25. Nxg5 hxg5 26. fxg6 fxg6 27. h3 c4 28. Bf3 Nh5 29. Bxh5 gxh5 30. Red1 Rhd8 31. Bc5+ Ke8 32. Rxd8+ Rxd8 33. Rf1 Bd6 34. Bxd6 Rxd6 35. Rf5 Rg6 36. Rxe5+ Kd7 37. g3 g4 38. Rxh5 gxh3 39. Rxh3 Rg4 40. Kd2 Rxe4 41. Rh4 Re6 42. Rf4 Ke7 43. a4 Rh6 44. axb5 Rh2+ 45. Ke3 axb5 46. Rf2 Rh1 47. Rf5 b4 48. cxb4 Rd1 49. Rc5 Rd3+ 50. Kf4 Rd4+ 51. Kg5 1-0

[Event "Hoogeveen op 26th"]
[Site "Hoogeveen"]
[Date "2023.10.27"]
[Round "8"]
[White "De Boer, Eelke"]
[Black "Ernst, Sipke"]
[Result "0-1"]
[ECO "B81"]
[WhiteElo "2327"]
[BlackElo "2551"]
[PlyCount "66"]
[EventDate "2023.10.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 Nf6 6. g4 Be7 7. g5 Nfd7 8. h4 a6 9. Bg2 Qc7 10. h5 Nc6 11. f4 Nb6 12. Nxc6 bxc6 13. b3 0-0 14. Qf3 f6 15. gxf6 Bxf6 16. Bb2 Be5 17. fxe5 Rxf3 18. Bxf3 Nd7 19. exd6 Qxd6 20. Ne2 e5 21. Rd1 Qb4+ 22. Bc3 Qe7 23. Ba5 Nf8 24. c4 Ne6 25. Bc3 Ng5 26. Bg2 Bg4 27. Rd3 Ne6 28. Bf3 Bxf3 29. Rxf3 Nd4 30. Rg3 Rf8 31. Rhh3 c5 32. Bxd4 cxd4 33. Rd3 Qb4+ 0-1

[Event "Hoogeveen op 26th"]
[Site "Hoogeveen"]
[Date "2023.10.26"]
[Round "7"]
[White "Ernst, Sipke"]
[Black "Zwirs, Nico"]
[Result "0-1"]
[ECO "D30"]
[WhiteElo "2551"]
[BlackElo "2451"]
[PlyCount "52"]
[EventDate "2023.10.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. e3 c5 4. dxc5 e6 5. c4 Bxc5 6. a3 0-0 7. Nc3 dxc4 8. Bxc4 a6 9. Bd3 b5 10. Qe2 Bb7 11. e4 Nbd7 12. Bf4 e5 13. Bg5 h6 14. Bh4 Bd4 15. 0-0 Bxc3 16. bxc3 Qc7 17. a4 Nh5 18. g3 Nc5 19. Ne1 g6 20. axb5 axb5 21. Rxa8 Rxa8 22. Bc2 Na4 23. Ng2 Nxc3 24. Qd2 g5 25. Rc1 Rd8 26. Bd3 Rxd3 0-1

[Event "Hoogeveen op 26th"]
[Site "Hoogeveen"]
[Date "2023.10.25"]
[Round "5"]
[White "Ernst, Sipke"]
[Black "Elgersma, Onno"]
[Result "1-0"]
[ECO "A13"]
[WhiteElo "2551"]
[BlackElo "2266"]
[PlyCount "73"]
[EventDate "2023.10.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. Nf3 d5 2. e3 Nf6 3. b3 e6 4. Bb2 c5 5. c4 Nc6 6. cxd5 exd5 7. Bb5 Bd6 8. 0-0 0-0 9. h3 Re8 10. Re1 a6 11. Bxc6 bxc6 12. Nc3 Rb8 13. Ba3 Ne4 14. Rc1 Re6 15. Kf1 Rf6 16. d3 Nxc3 17. Rxc3 Qa5 18. Bb2 Rg6 19. Rc2 Qc7 20. Ba3 Rb5 21. e4 Be6 22. Qc1 Qd7 23. e5 Bf8 24. Bxc5 Bf5 25. Rd1 Rxg2 26. Kxg2 Bxh3+ 27. Kh2 Bxc5 28. Rxc5 Qg4 29. Qg5 Qxg5 30. Nxg5 Rxc5 31. Kxh3 Rc2 32. f4 Rxa2 33. Rc1 h6 34. Nf3 Re2 35. Kg3 Re3 36. Rd1 Re2 37. Rd2 1-0

[Event "Hoogeveen op 26th"]
[Site "Hoogeveen"]
[Date "2023.10.25"]
[Round "6"]
[White "Lodici, Lorenzo"]
[Black "Ernst, Sipke"]
[Result "1-0"]
[ECO "C84"]
[WhiteElo "2537"]
[BlackElo "2551"]
[PlyCount "119"]
[EventDate "2023.10.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 b5 6. Bb3 Be7 7. Nc3 d6 8. a3 0-0 9. 0-0 Bg4 10. Be3 Nd4 11. Bxd4 exd4 12. Nd5 c6 13. Nxf6+ Bxf6 14. h3 Be6 15. Bxe6 fxe6 16. Qd2 e5 17. g3 c5 18. a4 Qd7 19. Kg2 bxa4 20. Qe2 Rab8 21. Ra2 Rb4 22. Nd2 d5 23. c3 Rb6 24. c4 Bg5 25. Nf3 Rxf3 26. Qxf3 dxc4 27. dxc4 Rb4 28. Rfa1 Qc6 29. h4 Bh6 30. Qe2 g6 31. Ra3 Qb7 32. Rxa4 Rxb2 33. Qf3 Rb3 34. Qg4 Rb6 35. Ra5 Bf8 36. R1a3 h5 37. Qe2 Bh6 38. Ra2 Qc6 39. Kh2 Bf8 40. Rd2 Bh6 41. Rda2 Bf8 42. Qc2 Kh7 43. R5a3 Qb7 44. Rf3 Kg8 45. Raa3 Rb2 46. Qa4 Rb6 47. Qe8 Qe7 48. Qa8 Qd6 49. Rfb3 Qf6 50. Kg2 Rd6 51. Rf3 Qd8 52. Qxd8 Rxd8 53. Kf1 Rd6 54. Rab3 Be7 55. Rb8+ Bd8 56. Ke2 a5 57. Rc8 Kg7 58. Rxc5 Ra6 59. Rxe5 a4 60. Ra3 1-0

[Event "Hoogeveen op 26th"]
[Site "Hoogeveen"]
[Date "2023.10.24"]
[Round "4"]
[White "Ernst, Sipke"]
[Black "Krishnan, Ritvik"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "2551"]
[BlackElo "2176"]
[PlyCount "149"]
[EventDate "2023.10.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[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 e5 9. fxg7 Rg8 10. Ndf3 Rxg7 11. Qd2 e4 12. Be3 Bxe3 13. Qxe3 Qxe3+ 14. Kxe3 exf3 15. Nxf3 Nc6 16. Rd1 Bf5 17. Rxd5 Bxc2 18. Bb5 Kf8 19. Bxc6 bxc6 20. Rd2 Re8+ 21. Kf2 Be4 22. Re1 Bd5 23. Rxe8+ Kxe8 24. a3 f6 25. Ne1 Kd7 26. Rd4 Ke6 27. g3 Ke5 28. Ke3 Rb7 29. Nd3+ Kd6 30. Rb4 Rb6 31. Kd4 Rxb4+ 32. axb4 Bf7 33. Nf2 Bd5 34. Nd1 Bb3 35. Ne3 Be6 36. Nf1 Bf7 37. g4 Be6 38. Ne3 Bd7 39. h3 Be6 40. Ng2 Ba2 41. Nf4 Bf7 42. Ne2 Be8 43. Ng1 Bg6 44. Nf3 Bf7 45. Nd2 Bd5 46. Ne4+ Bxe4 47. Kxe4 Ke6 48. Kd4 Kd6 49. Kc4 Kd7 50. Kc5 Kc7 51. h4 Kd7 52. b5 cxb5 53. Kxb5 Ke6 54. b4 Ke5 55. Ka6 h5 56. gxh5 f5 57. Kxa7 f4 58. b5 f3 59. b6 f2 60. b7 f1Q 61. b8Q+ Ke6 62. Qe8+ Kd6 63. Qd8+ Ke6 64. Qe8+ Kd6 65. Qd8+ Ke6 66. Qb6+ Kf7 67. Qg6+ Kf8 68. Qd6+ Kg8 69. Qg3+ Kh7 70. Qg6+ Kh8 71. Qh6+ Kg8 72. Qg5+ Kh7 73. Qg6+ Kh8 74. h6 Qf7+ 75. Qxf7 1/2-1/2

[Event "Hoogeveen op 26th"]
[Site "Hoogeveen"]
[Date "2023.10.23"]
[Round "3"]
[White "Mellema, Andries"]
[Black "Ernst, Sipke"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2160"]
[BlackElo "2551"]
[PlyCount "98"]
[EventDate "2023.10.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. 0-0 d6 6. c3 a6 7. a4 Ba7 8. Re1 0-0 9. h3 Ne7 10. Be3 Ng6 11. Bxa7 Rxa7 12. d4 Qe7 13. Bf1 exd4 14. Qxd4 Ra8 15. Nbd2 Re8 16. a5 Nd7 17. Re3 Kh8 18. Rae1 f6 19. Nc4 Nde5 20. Qd1 Nf4 21. Kh2 Qf7 22. Nfd2 Rd8 23. g3 Nxh3 24. Nxe5 dxe5 25. Bxh3 Bxh3 26. Kxh3 Qd7+ 27. Kg2 Qxd2 28. Qh5 g6 29. Qh6 Rd7 30. Rh1 Rg8 31. g4 Rf7 32. Qh2 Qd7 33. Rg3 Qc6 34. Re3 Qe6 35. Qg3 Rd8 36. Qh4 Kg8 37. Reh3 c5 38. Rf3 Rd2 39. b4 cxb4 40. cxb4 Rd4 41. Re3 Qc6 42. Rhe1 Rxb4 43. Kh2 Rb2 44. Rf3 Rd2 45. Qh6 Rd8 46. Ree3 Qc1 47. Qh3 Rd1 48. Qg2 Re1 49. Rc3 Qh6+ 0-1

[Event "Hoogeveen op 26th"]
[Site "Hoogeveen"]
[Date "2023.10.22"]
[Round "2"]
[White "Ernst, Sipke"]
[Black "Van Foreest, Machteld"]
[Result "1/2-1/2"]
[ECO "A13"]
[WhiteElo "2551"]
[BlackElo "2266"]
[PlyCount "116"]
[EventDate "2023.10.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 e6 3. Bg2 d5 4. 0-0 c5 5. c4 d4 6. e3 Nc6 7. exd4 cxd4 8. d3 Bd6 9. Na3 0-0 10. Nc2 e5 11. Bg5 Re8 12. Nd2 h6 13. Bxf6 Qxf6 14. Ne4 Qg6 15. Nxd6 Qxd6 16. Qh5 Be6 17. Rae1 Qd7 18. Qd1 Bf5 19. Qd2 a5 20. b3 Qd6 21. h3 Qg6 22. Rd1 h5 23. Rfe1 Rad8 24. Qe2 Nb8 25. a3 Nd7 26. b4 b6 27. Kh2 Nf6 28. bxa5 bxa5 29. Qd2 Nd7 30. Qxa5 Bxd3 31. Nb4 Bxc4 32. Nc6 Rc8 33. Nxe5 Nxe5 34. Rxe5 Rxe5 35. Qxe5 d3 36. Be4 Qb6 37. Kg1 g6 38. Qf4 Qb3 39. Rc1 Ba6 40. Rxc8+ Bxc8 41. Qd6 Bf5 42. Bxf5 gxf5 43. Qd8+ Kh7 44. Qg5 Qd5 45. Qxh5+ Kg8 46. Qg5+ Kf8 47. Qh6+ Ke8 48. Qd2 Qe4 49. f4 Qf3 50. Qe1+ Kf8 51. a4 Qc6 52. Qb4+ Kg8 53. Qb8+ Kh7 54. Qd8 Qc5+ 55. Kg2 Qc2+ 56. Kg1 Qc1+ 57. Kg2 Qb2+ 58. Kf1 Qe2+ 1/2-1/2

[Event "Hoogeveen op 26th"]
[Site "Hoogeveen"]
[Date "2023.10.21"]
[Round "1"]
[White "Labruyere, Roger"]
[Black "Ernst, Sipke"]
[Result "0-1"]
[ECO "A49"]
[WhiteElo "2148"]
[BlackElo "2551"]
[PlyCount "92"]
[EventDate "2023.10.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d6 3. g3 g6 4. Bg2 Bg7 5. 0-0 0-0 6. Nc3 d5 7. Ne5 c6 8. Bg5 h6 9. Bxf6 exf6 10. Nd3 h5 11. e3 Re8 12. Ne2 Nd7 13. b3 f5 14. c4 dxc4 15. bxc4 h4 16. Rb1 hxg3 17. hxg3 Qc7 18. Qb3 Nf6 19. Ne5 Ne4 20. Bxe4 fxe4 21. f4 exf3 22. Nxf3 Qe7 23. Kf2 Bg4 24. Neg1 b6 25. Rbe1 Rad8 26. Qc2 Rd6 27. c5 Re6 28. cxb6 axb6 29. Kg2 Bf5 30. Qb3 Be4 31. Qxb6 Bd5 32. Qc5 Qxc5 33. dxc5 Rxe3 34. Kf2 Rxe1 35. Rxe1 Ra8 36. Re2 Bf8 37. Rc2 Rxa2 38. Rxa2 Bxc5+ 39. Kf1 Bxa2 40. Ne5 Bd5 41. Ne2 Bd6 42. Ng4 Bc4 43. Nf6+ Kf8 44. Ne4 Be5 45. Kf2 Bxe2 46. Kxe2 f5 0-1

[Event "NED-chT 2324"]
[Site "Netherlands"]
[Date "2023.09.16"]
[Round "1.1"]
[White "Ris, Robert"]
[Black "Ernst, Sipke"]
[Result "1/2-1/2"]
[ECO "C45"]
[WhiteElo "2445"]
[BlackElo "2550"]
[PlyCount "28"]
[EventDate "2023.09.16"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]
[WhiteTeam "Amstelveen Zukertort"]
[BlackTeam "Groningen Combinatie"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. Nd2 Bc5 7. Nb3 Be7 8. e5 Nd5 9. c4 Nb6 10. Bd3 d5 11. exd6 cxd6 12. Nd4 Bf6 13. Qe2+ Kf8 14. Be3 c5 1/2-1/2

[Event "NED-ch KO"]
[Site "Utrecht"]
[Date "2023.07.05"]
[Round "2.2"]
[White "Van Foreest, Jorden"]
[Black "Ernst, Sipke"]
[Result "1/2-1/2"]
[ECO "C50"]
[WhiteElo "2695"]
[BlackElo "2539"]
[PlyCount "160"]
[EventDate "2023.07.02"]
[EventType "k.o."]
[EventRounds "4"]
[EventCountry "NED"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Be7 4. d4 exd4 5. Nxd4 d6 6. Nc3 Bf6 7. Be3 Nge7 8. 0-0 0-0 9. f4 Bxd4 10. Bxd4 Be6 11. Be2 Nxd4 12. Qxd4 f6 13. Rae1 Qd7 14. h3 Qc6 15. Kh2 Qb6 16. Nb5 Qxd4 17. Nxd4 Bf7 18. Bg4 a6 19. e5 fxe5 20. fxe5 dxe5 21. Rxe5 Ng6 22. Ree1 Rae8 23. Nf3 Bc4 24. Rxe8 Rxe8 25. Rd1 Ne5 26. Nxe5 Rxe5 27. Rd7 Rc5 28. b4 Rb5 29. a3 c6 30. Rd4 Ba2 31. Bc8 c5 32. Rd8+ Kf7 33. Rd7+ Kf6 34. Rxb7 cxb4 35. axb4 Bd5 36. Rd7 Be4 37. c3 a5 38. Rd6+ Kf7 39. Ba6 Rg5 40. Bc4+ Kf8 41. Rd2 axb4 42. cxb4 Bc6 43. Rb2 Ke7 44. b5 Bb7 45. Bf1 Kd6 46. h4 Re5 47. Rd2+ Kc7 48. Re2 Rxe2 49. Bxe2 Kb6 50. g4 h6 51. g5 hxg5 52. hxg5 Kc5 53. Kg3 Bd5 54. Kf4 Bf7 55. Ke5 Bb3 56. Bd3 Bf7 57. b6 Kxb6 58. Kd6 Bh5 59. Bc2 Kb5 60. Ke7 Kc5 61. Kf8 Kd6 62. Kxg7 Ke7 63. Bg6 Be2 64. Bf7 Bd1 65. Bg6 Be2 66. Kh6 Bc4 67. Bc2 Bf7 68. Kg7 Bh5 69. Bh7 Bf7 70. Bg8 Be8 71. Bc4 Bh5 72. Bd3 Bf7 73. Be2 Bd5 74. Kh6 Be4 75. Bh5 Bd3 76. Bg6 Bc4 77. Be4 Bf7 78. Bf3 Kf8 79. Bc6 Ke7 80. g6 Bxg6 1/2-1/2

[Event "NED-ch KO"]
[Site "Utrecht"]
[Date "2023.07.04"]
[Round "2.1"]
[White "Ernst, Sipke"]
[Black "Van Foreest, Jorden"]
[Result "0-1"]
[ECO "D35"]
[WhiteElo "2539"]
[BlackElo "2695"]
[PlyCount "54"]
[EventDate "2023.07.02"]
[EventType "k.o."]
[EventRounds "4"]
[EventCountry "NED"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 Be7 6. e3 h6 7. Bh4 Bg4 8. Nf3 Nbd7 9. h3 Bxf3 10. Qxf3 c6 11. Bd3 0-0 12. 0-0 Re8 13. Rfd1 Nf8 14. Bxf6 Bxf6 15. b4 Ne6 16. Rdc1 a6 17. a4 Qd6 18. b5 Ng5 19. Qd1 axb5 20. axb5 Rxa1 21. Rxa1 c5 22. dxc5 Qxc5 23. Na4 Qe7 24. Rc1 d4 25. exd4 Bxd4 26. Bh7+ Kxh7 27. Qxd4 Nf3+ 0-1

[Event "NED-ch KO"]
[Site "Utrecht"]
[Date "2023.07.03"]
[Round "1.2"]
[White "Ernst, Sipke"]
[Black "Reinderman, Dimitri"]
[Result "1-0"]
[ECO "A42"]
[WhiteElo "2539"]
[BlackElo "2589"]
[PlyCount "49"]
[EventDate "2023.07.02"]
[EventType "k.o."]
[EventRounds "4"]
[EventCountry "NED"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 g6 2. c4 Bg7 3. e4 d6 4. Nc3 e5 5. Nge2 exd4 6. Nxd4 Nc6 7. Be3 Nge7 8. Be2 0-0 9. Qd2 f5 10. exf5 Bxd4 11. Bxd4 Nxf5 12. Be3 Nxe3 13. Qxe3 Qf6 14. 0-0 Nd4 15. Rad1 c5 16. Nb5 Nf5 17. Qd2 Rd8 18. Bg4 Be6 19. Bxf5 gxf5 20. Qf4 Rd7 21. Rfe1 Rad8 22. Rxd6 a6 23. h3 Rxd6 24. Nxd6 b6 25. Rxe6 1-0

[Event "NED-ch KO"]
[Site "Utrecht"]
[Date "2023.07.03"]
[Round "1.1"]
[White "Reinderman, Dimitri"]
[Black "Ernst, Sipke"]
[Result "0-1"]
[ECO "B10"]
[WhiteElo "2589"]
[BlackElo "2539"]
[PlyCount "76"]
[EventDate "2023.07.02"]
[EventType "k.o."]
[EventRounds "4"]
[EventCountry "NED"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. c4 c6 2. e4 d5 3. exd5 cxd5 4. cxd5 Nf6 5. Nc3 Nxd5 6. Nf3 Nc6 7. Bb5 g6 8. Qa4 Qd6 9. Ne4 Qe6 10. 0-0 Bg7 11. Re1 0-0 12. d4 Nb6 13. Qa3 a6 14. Bxc6 Qxc6 15. Qxe7 Bf5 16. Ng3 Be6 17. Qh4 f6 18. Bh6 Rae8 19. Bxg7 Kxg7 20. Qf4 Nd5 21. Qd2 Bg4 22. Rxe8 Rxe8 23. Ne1 Qb6 24. h3 Bd7 25. Nf3 Qb4 26. Rc1 Bc6 27. Rd1 Qxd2 28. Nxd2 Nf4 29. f3 Bd5 30. Rc1 f5 31. b3 Kf6 32. Nc4 Re2 33. Kf1 Rxg2 34. Nh1 Rh2 35. Kg1 Rxa2 36. Re1 Nxh3+ 37. Kf1 Bxf3 38. Ng3 Bg2# 0-1

[Event "Titled Tuesday intern op 27th Jun Early"]
[Site "Chess.com INT"]
[Date "2023.06.27"]
[Round "4"]
[White "Ernst, Sipke"]
[Black "Matinian, Nikita"]
[Result "0-1"]
[ECO "A49"]
[WhiteElo "2539"]
[BlackElo "2416"]
[PlyCount "154"]
[EventDate "2023.06.27"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d6 2. g3 g6 3. Bg2 Bg7 4. Nf3 Nf6 5. 0-0 0-0 6. Re1 c6 7. e4 Bg4 8. Nbd2 Nbd7 9. h3 Bxf3 10. Nxf3 e5 11. dxe5 dxe5 12. b4 Qe7 13. Rb1 Rfd8 14. Qe2 b5 15. c4 a6 16. c5 Nf8 17. Bb2 N6d7 18. h4 a5 19. a3 axb4 20. axb4 Ra2 21. Ra1 Rda8 22. Rxa2 Rxa2 23. Ra1 Rxa1+ 24. Bxa1 Ne6 25. Bh3 Nd4 26. Bxd4 exd4 27. Bxd7 Qxd7 28. Ne1 Qe6 29. Nd3 f5 30. e5 Bh6 31. f4 Bg7 32. Qf3 h6 33. Kg2 Kh7 34. Kh2 Bf8 35. Kg2 Be7 36. Nf2 Kg7 37. Kh3 Qa2 38. Kg2 Qe6 39. Nd3 Kf7 40. Kh3 h5 41. Kg2 Bd8 42. Nf2 Bc7 43. Nh3 Ke7 44. Nf2 Kd7 45. Nd3 Kc8 46. Qf2 Qc4 47. Qf3 Qb3 48. Nf2 Qe6 49. Qe2 Kd7 50. Qf3 Qc4 51. Nd3 Qc2+ 52. Kh3 Qb3 53. Kg2 Qa2+ 54. Kh3 Bb8 55. Qd1 Qd5 56. Nf2 Ke6 57. Kh2 Bc7 58. Nd3 Bd8 59. Nf2 Be7 60. Nd3 Qa2+ 61. Kh3 Qc4 62. Qf3 Qd5 63. Kg2 Qe4 64. Nf2 Qxf3+ 65. Kxf3 Kd5 66. Ke2 Kc4 67. Nd3 Kc3 68. e6 Kc2 69. Ne5 Bf6 70. Nd3 Kc3 71. Ne5 Kc2 72. Nd3 Kc3 73. Ne5 Bxe5 74. e7 Kc2 75. e8Q d3+ 76. Kf2 d2 77. Qxe5 d1Q 0-1

[Event "Titled Tuesday intern op 27th Jun Early"]
[Site "Chess.com INT"]
[Date "2023.06.27"]
[Round "2"]
[White "Ernst, Sipke"]
[Black "Sjugirov, Sanan"]
[Result "0-1"]
[ECO "A32"]
[WhiteElo "2539"]
[BlackElo "2699"]
[PlyCount "58"]
[EventDate "2023.06.27"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 c5 4. Nf3 cxd4 5. Nxd4 Bb4+ 6. Bd2 Qb6 7. Bxb4 Qxb4+ 8. Nc3 Qxb2 9. Ndb5 Qb4 10. Qb3 Qc5 11. Bg2 0-0 12. 0-0 Nc6 13. Na4 Qe5 14. c5 b6 15. f4 Qb8 16. Nd6 Ba6 17. Bxc6 dxc6 18. Rfe1 Qc7 19. e4 bxc5 20. e5 Nd7 21. Qe3 Qa5 22. Nc3 Rab8 23. Nce4 Rb2 24. a3 Qa4 25. Rab1 Rfb8 26. Rxb2 Rxb2 27. Rc1 Rb3 28. Qf2 Qxa3 29. Ng5 Qxc1+ 0-1

[Event "Titled Tuesday intern op 27th Jun Early"]
[Site "Chess.com INT"]
[Date "2023.06.27"]
[Round "3"]
[White "Principe, Alexander"]
[Black "Ernst, Sipke"]
[Result "0-1"]
[ECO "B67"]
[WhiteElo "2295"]
[BlackElo "2539"]
[PlyCount "106"]
[EventDate "2023.06.27"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 a6 8. f3 Bd7 9. 0-0-0 Nxd4 10. Qxd4 Be7 11. Kb1 b5 12. g4 Qc7 13. Bxf6 Bxf6 14. Qxd6 Qxd6 15. Rxd6 Ke7 16. Rd1 h5 17. Bg2 hxg4 18. fxg4 Bxc3 19. bxc3 e5 20. h3 Be6 21. Kb2 g5 22. Rhe1 Rhd8 23. Bf1 Rxd1 24. Rxd1 Rc8 25. Ra1 Bc4 26. Bd3 Rh8 27. Bxc4 bxc4 28. Rh1 Rd8 29. h4 gxh4 30. Rxh4 Rd2 31. Rh6 f6 32. Rh7+ Ke6 33. Ra7 Re2 34. Rxa6+ Kf7 35. Rc6 Rxe4 36. a4 Rxg4 37. a5 Rg8 38. Rxc4 Ra8 39. Ra4 Ra6 40. Kb3 f5 41. Kb4 f4 42. Kb5 Ra8 43. Kc5 Ke6 44. a6 Rc8+ 45. Kb6 f3 46. a7 f2 47. Kb7 Rf8 48. Ra1 e4 49. c4 e3 50. c5 e2 51. c6 e1Q 52. a8Q Qb4+ 53. Kc7 Rf7+ 0-1

[Event "Titled Tuesday intern op 27th Jun Early"]
[Site "Chess.com INT"]
[Date "2023.06.27"]
[Round "9"]
[White "Yarullina, Alina"]
[Black "Ernst, Sipke"]
[Result "0-1"]
[ECO "C44"]
[WhiteElo "2084"]
[BlackElo "2539"]
[PlyCount "78"]
[EventDate "2023.06.27"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. c3 d5 4. Qa4 Bd7 5. exd5 Nd4 6. Qd1 Nxf3+ 7. Qxf3 Bd6 8. Bc4 f5 9. d3 Nf6 10. 0-0 0-0 11. Bg5 Qe8 12. Re1 Qg6 13. Bxf6 Rxf6 14. a4 f4 15. h3 Qh6 16. Nd2 g5 17. Ne4 Rg6 18. Nxd6 cxd6 19. Rxe5 dxe5 20. d6+ Be6 21. Qxb7 Rf8 22. Bxe6+ Rxe6 23. d7 Rd6 24. Qxa7 Qe6 25. Re1 Qxd7 26. Qc5 Rd5 27. Qc4 Kg7 28. d4 exd4 29. cxd4 Rc8 30. Re7+ Qxe7 31. Qxd5 Rc1+ 32. Kh2 Re1 33. a5 g4 34. a6 g3+ 35. fxg3 fxg3+ 36. Kxg3 Qe3+ 37. Kh2 Qf4+ 38. g3 Qd2+ 39. Qg2 Re2 0-1

[Event "Titled Tuesday intern op 27th Jun Early"]
[Site "Chess.com INT"]
[Date "2023.06.27"]
[Round "1"]
[White "Zhong, Kevin"]
[Black "Ernst, Sipke"]
[Result "0-1"]
[ECO "E91"]
[WhiteElo "2156"]
[BlackElo "2539"]
[PlyCount "106"]
[EventDate "2023.06.27"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 0-0 5. Nf3 d6 6. Be2 Nfd7 7. Be3 a5 8. 0-0 Nc6 9. d5 Nb4 10. Nd4 c5 11. dxc6 Nxc6 12. Nd5 Nc5 13. f3 Nxd4 14. Bxd4 Bxd4+ 15. Qxd4 e5 16. Qe3 Be6 17. Rfd1 Bxd5 18. Rxd5 Qe7 19. Rad1 Ra6 20. Qd2 Ne6 21. Rxd6 Rxd6 22. Qxd6 Qg5 23. Qd2 Qe7 24. Qxa5 Nd4 25. Bf1 f5 26. exf5 gxf5 27. Qd2 Kh8 28. Re1 Qc5 29. Qe3 Re8 30. f4 e4 31. b4 Qb6 32. Qc3 Qf6 33. Kh1 Re6 34. c5 Kg7 35. Bc4 Re7 36. Rd1 Nc6 37. Qxf6+ Kxf6 38. a3 e3 39. Kg1 Re4 40. Bd5 Rxf4 41. Bxc6 bxc6 42. g3 Rc4 43. Kf1 Ke5 44. Ke2 Ke4 45. Rd6 Rc2+ 46. Ke1 Kf3 47. Rd3 Rc1+ 48. Rd1 Rxd1+ 49. Kxd1 Kf2 50. b5 e2+ 51. Kc2 e1Q 52. bxc6 Qa5 53. Kd3 Qxc5 0-1

[Event "Maastricht Limburg op 15th"]
[Site "Maastricht"]
[Date "2023.05.29"]
[Round "6"]
[White "Beerdsen, Thomas"]
[Black "Ernst, Sipke"]
[Result "1/2-1/2"]
[ECO "C30"]
[WhiteElo "2507"]
[BlackElo "2529"]
[PlyCount "95"]
[EventDate "2023.05.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Bc5 3. Bc4 Nf6 4. d3 Nc6 5. f4 d6 6. Nf3 0-0 7. f5 Nd4 8. Bg5 c6 9. Qd2 h6 10. Bxf6 Nxf3+ 11. gxf3 Qxf6 12. 0-0-0 a5 13. a4 Rd8 14. Ba2 Kh7 15. Ne2 d5 16. h4 b5 17. axb5 dxe4 18. fxe4 cxb5 19. Kb1 Ra7 20. Nc3 b4 21. Nd5 Rxd5 22. Bxd5 a4 23. d4 exd4 24. Rh3 Bb7 25. Bxb7 Rxb7 26. Qe2 Re7 27. Qb5 Qd6 28. f6 gxf6 29. Qxa4 Rxe4 30. Qa8 Rg4 31. Qf3 Qe6 32. Rf1 Be7 33. Rg3 Rg6 34. Rxg6 fxg6 35. h5 f5 36. Qd3 Bf6 37. hxg6+ Kxg6 38. Qg3+ Bg5 39. Re1 Qd5 40. Qd3 Be3 41. b3 Qe4 42. Qa6+ Kg5 43. Qd6 h5 44. Qxb4 d3 45. Qxe4 fxe4 46. cxd3 Bf2 47. Rxe4 h4 48. Rxh4 1/2-1/2

[Event "Maastricht Limburg op 15th"]
[Site "Maastricht"]
[Date "2023.05.29"]
[Round "7"]
[White "Ernst, Sipke"]
[Black "Fischer, Daniel1111"]
[Result "1-0"]
[ECO "E08"]
[WhiteElo "2529"]
[BlackElo "2383"]
[PlyCount "87"]
[EventDate "2023.05.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Bd2 Be7 5. Nf3 d5 6. Bg2 0-0 7. 0-0 c6 8. Qc2 Nbd7 9. Rd1 b6 10. Bf4 Ba6 11. Ne5 Rc8 12. Nc3 Qe8 13. Rac1 Nxe5 14. dxe5 Nh5 15. Be3 Bxc4 16. g4 f5 17. gxh5 f4 18. Bd2 Qxh5 19. Bf3 Qxe5 20. Kh1 Bh4 21. Rf1 Rf6 22. Be1 Rg6 23. b3 Ba6 24. b4 Bc4 25. Na4 Bf6 26. Bc3 d4 27. Bxd4 Qxd4 28. Rfd1 Qe5 29. Qxc4 b5 30. Qc5 bxa4 31. Qxa7 Rg5 32. Qxa4 Qb5 33. Qb3 Re5 34. a4 Qb6 35. Rd6 Qxf2 36. Rxe6 Kf8 37. Rxe5 Bxe5 38. Qe6 Re8 39. Qxc6 Qa7 40. a5 Bd4 41. Qd6+ Kg8 42. Rc7 Qb8 43. Qd5+ Kh8 44. Rb7 1-0

[Event "Maastricht Limburg op 15th"]
[Site "Maastricht"]
[Date "2023.05.28"]
[Round "5"]
[White "Ernst, Sipke"]
[Black "Labruyere, Roger"]
[Result "1-0"]
[ECO "E24"]
[WhiteElo "2529"]
[BlackElo "2169"]
[PlyCount "73"]
[EventDate "2023.05.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 d6 6. f3 c5 7. e4 Nc6 8. Ne2 b6 9. Ng3 Na5 10. Bd3 Ba6 11. e5 dxe5 12. dxe5 Nd7 13. f4 0-0 14. Qe2 f5 15. exf6 Nxf6 16. 0-0 Qd7 17. Ne4 Rad8 18. Nxf6+ Rxf6 19. Rd1 g6 20. Bc2 Qe8 21. Rxd8 Qxd8 22. f5 Bxc4 23. Qe5 Rf8 24. Bh6 Qf6 25. Qe3 gxf5 26. Bxf8 Kxf8 27. Rd1 f4 28. Qf3 Bd5 29. Be4 Nc4 30. Bxd5 Ne3 31. Bb3 Nxd1 32. Bxd1 Qe5 33. g3 Qe1+ 34. Kg2 Qd2+ 35. Kh3 e5 36. Bb3 Qd6 37. Qd5 1-0

[Event "Maastricht Limburg op 15th"]
[Site "Maastricht"]
[Date "2023.05.28"]
[Round "4"]
[White "Kopylov, Michael"]
[Black "Ernst, Sipke"]
[Result "1/2-1/2"]
[ECO "D13"]
[WhiteElo "2364"]
[BlackElo "2529"]
[PlyCount "116"]
[EventDate "2023.05.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. cxd5 cxd5 5. Nc3 Nc6 6. Bf4 a6 7. e3 Bg4 8. Be2 e6 9. Ne5 Bxe2 10. Qxe2 Rc8 11. 0-0 Bd6 12. Nd3 Bxf4 13. Nxf4 0-0 14. Rac1 Qa5 15. Nd3 Nd7 16. Rc2 Rc7 17. Rfc1 Rfc8 18. g3 g6 19. a3 Kg7 20. Nb1 Ne7 21. Rxc7 Rxc7 22. Qd2 Rxc1+ 23. Qxc1 Qb5 24. Qc2 g5 25. Nd2 h6 26. Kg2 a5 27. b3 Qc6 28. Qb2 Nf5 29. Qc1 Qxc1 30. Nxc1 Nd6 31. a4 f6 32. Nd3 h5 33. b4 Nc4 34. Nb3 axb4 35. Nxb4 Kf7 36. a5 Nb8 37. Kf3 Ke7 38. e4 Kd6 39. h4 gxh4 40. gxh4 dxe4+ 41. Kxe4 Nd7 42. Nd3 Ke7 43. Nf4 Nd6+ 44. Kd3 e5 45. Nxh5 exd4 46. Kxd4 Nf5+ 47. Kd5 Nxh4 48. Nc5 Nxc5 49. Kxc5 Nf5 50. Nf4 Kd7 51. Nd5 Ke6 52. Nc7+ Ke5 53. Nd5 Ke6 54. Nc7+ Ke5 55. Ne8 Ne7 56. Nd6 Nc6 57. Nxb7 Nxa5 58. Nxa5 Ke4 1/2-1/2

[Event "Maastricht Limburg op 15th"]
[Site "Maastricht"]
[Date "2023.05.27"]
[Round "3"]
[White "Ernst, Sipke"]
[Black "Maatman, Nick"]
[Result "1-0"]
[ECO "E08"]
[WhiteElo "2529"]
[BlackElo "2345"]
[PlyCount "91"]
[EventDate "2023.05.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Bb4+ 5. Bd2 Be7 6. Nf3 c6 7. Qc2 Nbd7 8. 0-0 0-0 9. Bf4 b6 10. Ne5 Bb7 11. Rd1 Rc8 12. Nc3 Nh5 13. Bc1 Qc7 14. Nxd7 Qxd7 15. e4 Nf6 16. e5 Ne8 17. Qa4 dxc4 18. d5 exd5 19. Nxd5 b5 20. Nxe7+ Qxe7 21. Qxa7 Ra8 22. Qb6 Ra6 23. Qd4 c5 24. Qd7 Qxd7 25. Rxd7 Bxg2 26. Kxg2 f6 27. Rd5 fxe5 28. Rxc5 Nd6 29. Rxe5 Rf5 30. Re2 b4 31. Bf4 Nb5 32. Re8+ Kf7 33. Rb8 b3 34. a3 g5 35. Be3 Rd5 36. Rc1 Nd6 37. g4 h6 38. Rh8 Kg6 39. Rd8 Rc6 40. a4 Ra5 41. Rd1 Raa6 42. Bd4 Rc8 43. Rd7 Nf7 44. Bc3 Rxa4 45. R1d6+ Nxd6 46. Rg7# 1-0

[Event "Maastricht Limburg op 15th"]
[Site "Maastricht"]
[Date "2023.05.26"]
[Round "1"]
[White "Offringa, Joost"]
[Black "Ernst, Sipke"]
[Result "0-1"]
[ECO "D73"]
[WhiteElo "2264"]
[BlackElo "2529"]
[PlyCount "40"]
[EventDate "2023.05.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 g6 3. Bg2 Bg7 4. d4 c6 5. 0-0 Nf6 6. c4 dxc4 7. a4 Ne4 8. Qc2 Nd6 9. Nbd2 0-0 10. a5 Na6 11. Nxc4 Bf5 12. Qa4 Nxc4 13. Qxc4 Be4 14. Qb3 Nc7 15. Qxb7 Rb8 16. Qxa7 Bxf3 17. Bf4 Bxg2 18. Bxc7 Qd5 19. e4 Bxe4 20. Bxb8 Bxd4 0-1

[Event "BEL-chT 2223"]
[Site "Belgium"]
[Date "2023.04.30"]
[Round "11.1"]
[White "Aroshidze, Levan"]
[Black "Ernst, Sipke"]
[Result "1/2-1/2"]
[ECO "C55"]
[WhiteElo "2521"]
[BlackElo "2526"]
[PlyCount "85"]
[EventDate "2022.09.25"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "BEL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]
[WhiteTeam "Wachtebeke"]
[BlackTeam "KBSK Brugge"]
[WhiteTeamCountry "BEL"]
[BlackTeamCountry "BEL"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 d6 6. c3 g6 7. 0-0 Bg7 8. h3 0-0 9. Re1 Bd7 10. d4 h6 11. Nbd2 Re8 12. Bc2 b5 13. Nf1 Na5 14. Ng3 c5 15. d5 Nc4 16. b3 Nb6 17. a4 c4 18. bxc4 Nxc4 19. Nd2 Qc7 20. Nxc4 Qxc4 21. Bd2 Rec8 22. Nf1 Qc7 23. axb5 axb5 24. Bd3 Ra4 25. Rb1 Qa7 26. Qf3 Qa6 27. Rb3 Ra3 28. Rxa3 Qxa3 29. Rb1 Qa6 30. Ne3 Ne8 31. Nc2 Rc5 32. Nb4 Qa8 33. Qd1 Bf6 34. Ra1 Qd8 35. Bxh6 Rxc3 36. Bd2 Rc8 37. Qe2 Bg5 38. Be1 Nf6 39. Nc6 Bxc6 40. dxc6 Rxc6 41. Bxb5 Rc1 42. Rxc1 Bxc1 43. Qd3 1/2-1/2

[Event "NED-chT 2223"]
[Site "Netherlands"]
[Date "2023.04.22"]
[Round "9.1"]
[White "Leenhouts, Koen"]
[Black "Ernst, Sipke"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2437"]
[BlackElo "2515"]
[PlyCount "88"]
[EventDate "2022.09.17"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]
[WhiteTeam "Sas van Gent"]
[BlackTeam "Groningen Combinatie"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. d4 d5 2. c4 e6 3. Nc3 h6 4. Nf3 Nf6 5. Bf4 Bd6 6. Bxd6 Qxd6 7. e3 0-0 8. Be2 dxc4 9. Ne5 Rd8 10. 0-0 Qe7 11. Qc2 c5 12. dxc5 Qxc5 13. Rfd1 Bd7 14. Nxc4 Qe7 15. Qb3 Bc6 16. Na5 b6 17. Rxd8+ Qxd8 18. Rd1 Qe7 19. Nxc6 Nxc6 20. Qa4 Rc8 21. Ba6 Rc7 22. Nb5 Rd7 23. Rxd7 Qxd7 24. Nc3 Qd6 25. h3 g5 26. Bb5 Na5 27. Ne4 Nxe4 28. Qxe4 Qd1+ 29. Kh2 Qd6+ 30. Kg1 Qd1+ 31. Bf1 Qd7 32. h4 Nc6 33. hxg5 hxg5 34. Qg4 Qe7 35. Bb5 Nd8 36. Qh5 Qf6 37. Bd3 Nc6 38. Qh7+ Kf8 39. Qe4 Nd8 40. Qb4+ Kg7 41. Be4 Qe5 42. Bf3 Qc7 43. Qd2 f6 44. Bh5 Nf7 1/2-1/2

[Event "BEL-chT 2223"]
[Site "Belgium"]
[Date "2023.04.16"]
[Round "10.1"]
[White "Ernst, Sipke"]
[Black "Beukema, Stefan"]
[Result "1-0"]
[ECO "A85"]
[WhiteElo "2526"]
[BlackElo "2431"]
[PlyCount "41"]
[EventDate "2022.09.25"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "BEL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]
[WhiteTeam "KBSK Brugge"]
[BlackTeam "Brasschaat"]
[WhiteTeamCountry "BEL"]
[BlackTeamCountry "BEL"]

1. d4 f5 2. c4 Nf6 3. Nc3 g6 4. Bg5 Bg7 5. e3 d6 6. Bd3 e5 7. f3 c6 8. Nge2 Be6 9. 0-0 0-0 10. Qc2 h6 11. Bh4 Qe8 12. Rfe1 Na6 13. a3 Qf7 14. c5 Bb3 15. Qc1 exd4 16. exd4 dxc5 17. Bxa6 bxa6 18. dxc5 Nd7 19. Bf2 Ne5 20. Qb1 Rad8 21. Nd4 1-0

[Event "Southend Masters"]
[Site "Southend"]
[Date "2023.04.10"]
[Round "9"]
[White "Livaic, Leon"]
[Black "Ernst, Sipke"]
[Result "0-1"]
[ECO "D10"]
[WhiteElo "2591"]
[BlackElo "2526"]
[PlyCount "60"]
[EventDate "2023.04.06"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ENG"]
[EventCategory "9"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Bg5 f6 5. Bd2 Nc6 6. Nc3 e6 7. Nf3 Bd6 8. e4 Nge7 9. Bd3 0-0 10. 0-0 Bc7 11. e5 Ng6 12. Re1 Bb6 13. exf6 Qxf6 14. Bg5 Qf7 15. Be3 Qf6 16. Ne2 Nh4 17. Nxh4 Qxh4 18. g3 Qf6 19. Bb5 e5 20. Bxc6 bxc6 21. dxe5 Qxe5 22. Nd4 Qf6 23. b4 Bd7 24. Qd2 Rae8 25. Nc2 Bh3 26. f4 Rxe3 27. Nxe3 Re8 28. Rac1 Qe7 29. Rc5 Bxc5 30. bxc5 Qxc5 0-1

[Event "Southend Masters"]
[Site "Southend"]
[Date "2023.04.09"]
[Round "7"]
[White "Ernst, Sipke"]
[Black "Han, Yichen"]
[Result "0-1"]
[ECO "E51"]
[WhiteElo "2526"]
[BlackElo "2406"]
[PlyCount "52"]
[EventDate "2023.04.06"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ENG"]
[EventCategory "9"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Bb4 4. e3 Nf6 5. Nf3 0-0 6. Bd2 Re8 7. Bd3 b6 8. cxd5 exd5 9. Ne5 c5 10. 0-0 Bb7 11. a3 Bxc3 12. Bxc3 c4 13. Bc2 Nc6 14. f3 b5 15. g4 a5 16. Qe1 Qe7 17. g5 Nd7 18. f4 Ndxe5 19. dxe5 d4 20. exd4 b4 21. Qh4 g6 22. f5 bxc3 23. f6 Qf8 24. bxc3 Nxe5 25. dxe5 Qc5+ 26. Qf2 Qd5 0-1

[Event "Southend Masters"]
[Site "Southend"]
[Date "2023.04.09"]
[Round "8"]
[White "Ernst, Sipke"]
[Black "Korneev, Oleg"]
[Result "1/2-1/2"]
[ECO "B40"]
[WhiteElo "2526"]
[BlackElo "2468"]
[PlyCount "9"]
[EventDate "2023.04.06"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ENG"]
[EventCategory "9"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. g3 Nc6 4. Bg2 Nf6 5. Qe2 1/2-1/2

[Event "Southend Masters"]
[Site "Southend"]
[Date "2023.04.08"]
[Round "5"]
[White "Ernst, Sipke"]
[Black "Boyer, Mahel"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2526"]
[BlackElo "2463"]
[PlyCount "21"]
[EventDate "2023.04.06"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ENG"]
[EventCategory "9"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 h6 4. Nf3 Nf6 5. g3 Nc6 6. Bg2 Bd6 7. 0-0 0-0 8. b3 dxc4 9. bxc4 e5 10. e3 exd4 11. exd4 1/2-1/2

[Event "Southend Masters"]
[Site "Southend"]
[Date "2023.04.08"]
[Round "6"]
[White "Vardan, Nagpal"]
[Black "Ernst, Sipke"]
[Result "1/2-1/2"]
[ECO "D59"]
[WhiteElo "2333"]
[BlackElo "2526"]
[PlyCount "78"]
[EventDate "2023.04.06"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ENG"]
[EventCategory "9"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 h6 6. Bh4 0-0 7. Nf3 b6 8. Bd3 Bb7 9. 0-0 Nbd7 10. cxd5 Nxd5 11. Bxe7 Qxe7 12. Nxd5 Bxd5 13. Qe2 c5 14. dxc5 Nxc5 15. Bc4 Bb7 16. Rfd1 Rfd8 17. Ne1 a6 18. f3 b5 19. Bd3 e5 20. Bc2 e4 21. f4 Bd5 22. b3 Qf6 23. Rab1 Be6 24. Rxd8+ Rxd8 25. Rd1 b4 26. Rxd8+ Qxd8 27. Qd1 Qxd1 28. Bxd1 a5 29. Nc2 Nd3 30. Nd4 Bd5 31. Bc2 g6 32. Kf1 Nc5 33. Ke2 Kf8 34. Kd2 Ke7 35. g3 h5 36. Bd1 Ne6 37. Nxe6 Bxe6 38. Be2 Bh3 39. Bc4 Be6 1/2-1/2

[Event "Southend Masters"]
[Site "Southend"]
[Date "2023.04.07"]
[Round "4"]
[White "Chan, Kim Yew"]
[Black "Ernst, Sipke"]
[Result "1/2-1/2"]
[ECO "E05"]
[WhiteElo "2367"]
[BlackElo "2526"]
[PlyCount "117"]
[EventDate "2023.04.06"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ENG"]
[EventCategory "9"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. g3 Be7 5. Bg2 0-0 6. 0-0 dxc4 7. Qc2 b6 8. Bg5 c6 9. Qxc4 Ba6 10. Qc2 h6 11. Bxf6 Bxf6 12. Rd1 Qc7 13. Nc3 Nd7 14. Rac1 Rac8 15. b4 Qb8 16. e3 Rfd8 17. Qb3 Bb7 18. h4 c5 19. bxc5 bxc5 20. d5 c4 21. Qc2 exd5 22. Nxd5 Bxd5 23. Rxd5 Nb6 24. Rxd8+ Bxd8 25. Nd4 Bf6 26. Nc6 Qd6 27. Nxa7 Rc5 28. a4 c3 29. Nb5 Qd2 30. a5 Rxb5 31. axb6 Qxc2 32. Rxc2 Rb1+ 33. Bf1 Rxb6 34. Bd3 Rb1+ 35. Kg2 Ra1 36. Kf3 Kf8 37. Ke2 Ke7 38. Bc4 h5 39. Ra2 Rxa2+ 40. Bxa2 c2 41. Kd2 Bc3+ 42. Kxc2 Be1 43. f4 Bxg3 44. Kd3 Bxh4 45. Ke4 g6 46. Kf3 f6 47. Bb1 Kf7 48. Bc2 Be1 49. Bd3 Kg7 50. Bc2 Kh6 51. Bd3 Bd2 52. Bc2 h4 53. Kg4 Bxe3 54. Kxh4 Bxf4 55. Kg4 Bg3 56. Kxg3 Kg7 57. Kg4 Kh8 58. Bxg6 f5+ 59. Kxf5 1/2-1/2

[Event "Southend Masters"]
[Site "Southend"]
[Date "2023.04.07"]
[Round "3"]
[White "Ernst, Sipke"]
[Black "Kirk, Ezra"]
[Result "1-0"]
[ECO "E71"]
[WhiteElo "2526"]
[BlackElo "2439"]
[PlyCount "99"]
[EventDate "2023.04.06"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ENG"]
[EventCategory "9"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 0-0 6. Be3 e5 7. d5 Na6 8. g4 Nc5 9. f3 a5 10. Qd2 c6 11. Nge2 a4 12. Nc1 Qa5 13. Nd3 cxd5 14. cxd5 Nfd7 15. Nxc5 Nxc5 16. Nb5 Qd8 17. 0-0-0 b6 18. Bc4 Qd7 19. Kb1 Ba6 20. Qe2 f5 21. gxf5 gxf5 22. Bxc5 bxc5 23. Na3 Bc8 24. Bd3 f4 25. Bb5 Qe7 26. Nc4 Qd8 27. Qc2 Bf6 28. Rdg1+ Kh8 29. h4 Rf7 30. h5 a3 31. bxa3 Bh4 32. Ka1 Bg3 33. Rb1 Ba6 34. Bxa6 Rxa6 35. h6 Rfa7 36. Rb5 Kg8 37. Qb2 Kf7 38. Rb8 Qd7 39. Rb1 Qa4 40. Rc1 Qd7 41. Rb1 Qa4 42. Rc1 Qd7 43. Rh8 Kf6 44. Rf8+ Kg6 45. Rg8+ Kf6 46. Rb1 Qf7 47. Rd8 Qc7 48. Rxd6+ Qxd6 49. Nxd6 Rxd6 50. Qb8 1-0

[Event "Southend Masters"]
[Site "Southend"]
[Date "2023.04.06"]
[Round "1"]
[White "Ernst, Sipke"]
[Black "Willow, Jonah B"]
[Result "1-0"]
[ECO "D21"]
[WhiteElo "2526"]
[BlackElo "2468"]
[PlyCount "91"]
[EventDate "2023.04.06"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ENG"]
[EventCategory "9"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. Nf3 c5 4. e3 cxd4 5. Bxc4 Qc7 6. Bb3 dxe3 7. Bxe3 e6 8. 0-0 Nc6 9. Nc3 Nf6 10. Nb5 Qa5 11. Nfd4 Nxd4 12. Qxd4 Bd7 13. Nd6+ Bxd6 14. Qxd6 Bc6 15. Bc5 Qd8 16. Qg3 Ne4 17. Qxg7 Qf6 18. Qxf6 Nxf6 19. f3 Rg8 20. Rac1 Nd5 21. Rc2 a6 22. Kf2 0-0-0 23. g3 Rg5 24. Rd1 Rf5 25. g4 Rf6 26. Bxd5 Rxd5 27. Rxd5 exd5 28. Bd4 Re6 29. Rd2 Kd7 30. Kg3 Bb5 31. Bc3 Kd6 32. Rd4 Re3 33. Rf4 Ke7 34. a4 Bd3 35. Rb4 b5 36. Rb3 bxa4 37. Ra3 Re2 38. Bb4+ Ke6 39. Rxd3 Rxb2 40. Ba3 Ra2 41. Bf8 Rc2 42. Rd4 Ra2 43. Kf4 h5 44. gxh5 Rxh2 45. h6 a3 46. Kg3 1-0

[Event "Southend Masters"]
[Site "Southend"]
[Date "2023.04.06"]
[Round "2"]
[White "Ghasi, Ameet K"]
[Black "Ernst, Sipke"]
[Result "1/2-1/2"]
[ECO "A08"]
[WhiteElo "2479"]
[BlackElo "2526"]
[PlyCount "84"]
[EventDate "2023.04.06"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ENG"]
[EventCategory "9"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. 0-0 Nf6 5. d3 e5 6. Nbd2 Bd6 7. e4 d4 8. Nc4 Bc7 9. a4 a6 10. Nh4 Bg4 11. Qe1 b5 12. axb5 axb5 13. Rxa8 Qxa8 14. Na3 Qa6 15. f4 Be6 16. Qe2 c4 17. dxc4 bxc4 18. f5 d3 19. Qd1 Bc8 20. c3 Na5 21. h3 Nb3 22. Bg5 Bb7 23. Kh2 Bd6 24. Bxf6 gxf6 25. Nb1 Bc5 26. Qg4 Kf8 27. Nf3 Be3 28. Qh4 Qd6 29. Re1 Bf2 30. Rf1 Be3 31. Re1 Bf2 32. Rf1 Bc5 33. Qh6+ Ke7 34. Nh4 Qd8 35. Nf3 Qb6 36. Qg7 Qd8 37. Nbd2 Nxd2 38. Nxd2 Be3 39. Nxc4 Rg8 40. Qxh7 Rh8 41. Qg7 Rg8 42. Qh7 Rh8 1/2-1/2

[Event "Bundesliga 2223"]
[Site "Germany"]
[Date "2023.04.02"]
[Round "13.3"]
[White "Swinkels, Robin"]
[Black "Ernst, Sipke"]
[Result "0-1"]
[ECO "E05"]
[WhiteElo "2513"]
[BlackElo "2538"]
[PlyCount "54"]
[EventDate "2022.10.21"]
[EventType "team-tourn"]
[EventRounds "15"]
[EventCountry "GER"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]
[WhiteTeam "Remagen Sinzig"]
[BlackTeam "Hamburger SK"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. Nf3 0-0 6. 0-0 dxc4 7. Qc2 b6 8. Ne5 Qxd4 9. Bxa8 Qxe5 10. Bf3 Nd5 11. Qxc4 Ba6 12. Qc2 c5 13. Nc3 Nc6 14. Qa4 Bb7 15. Rd1 Nd4 16. Bxd5 exd5 17. Qxa7 Qc7 18. Rxd4 cxd4 19. Nxd5 Qd7 20. Nxe7+ Qxe7 21. Bf4 d3 22. exd3 Qd7 23. Rf1 Qc6 24. f3 Ra8 25. Qxa8+ Bxa8 26. Rc1 Qe6 27. Kf2 h6 0-1

[Event "Bundesliga 2223"]
[Site "Germany"]
[Date "2023.04.01"]
[Round "12.4"]
[White "Ernst, Sipke"]
[Black "Wagner, Dennis"]
[Result "1/2-1/2"]
[ECO "E53"]
[WhiteElo "2538"]
[BlackElo "2570"]
[PlyCount "33"]
[EventDate "2022.10.21"]
[EventType "team-tourn"]
[EventRounds "15"]
[EventCountry "GER"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]
[WhiteTeam "Hamburger SK"]
[BlackTeam "Viernheim"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 0-0 5. Nf3 c5 6. Bd3 d5 7. cxd5 exd5 8. dxc5 Bg4 9. 0-0 Bxc5 10. h3 Bh5 11. b3 Nc6 12. Bb2 a6 13. Rc1 Ba7 14. Be2 Bg6 15. Bd3 Bh5 16. Be2 Bg6 17. Bd3 1/2-1/2

[Event "BEL-chT 2223"]
[Site "Belgium"]
[Date "2023.03.19"]
[Round "9.3"]
[White "Kuipers, Stefan"]
[Black "Ernst, Sipke"]
[Result "1/2-1/2"]
[ECO "C42"]
[WhiteElo "2440"]
[BlackElo "2526"]
[PlyCount "83"]
[EventDate "2022.09.25"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "BEL"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]
[WhiteTeam "Mechelen"]
[BlackTeam "KBSK Brugge"]
[WhiteTeamCountry "BEL"]
[BlackTeamCountry "BEL"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3 Nxc3 6. dxc3 Be7 7. Bd3 Nc6 8. Be3 Be6 9. Nd4 Nxd4 10. cxd4 Qd7 11. Qf3 c6 12. 0-0 0-0 13. Rfe1 Rfe8 14. h3 Bd5 15. Qf4 b5 16. Bd2 Bf6 17. a4 h6 18. Rxe8+ Rxe8 19. Bb4 bxa4 20. Bxd6 Bg5 21. Qg3 Be4 22. Be5 Bxd3 23. Qxd3 c5 24. Qc4 cxd4 25. Qxd4 Qxd4 26. Bxd4 Re2 27. Rxa4 Rxc2 28. Rxa7 Rc1+ 29. Kh2 Rc4 30. Bc3 Rc6 31. Kg3 Rb6 32. f4 Bf6 33. Rc7 h5 34. Kf3 h4 35. Rc4 Bxc3 36. bxc3 Rg6 37. g4 hxg3 38. Kg2 Kf8 39. Re4 Rc6 40. Re3 Rc4 41. Kxg3 g6 42. Kg4 1/2-1/2

[Event "NED-chT 2223"]
[Site "Netherlands"]
[Date "2023.03.11"]
[Round "7.5"]
[White "Ernst, Sipke"]
[Black "Krudde, Fitzgerald"]
[Result "1-0"]
[ECO "D36"]
[WhiteElo "2515"]
[BlackElo "2283"]
[PlyCount "81"]
[EventDate "2022.09.17"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]
[WhiteTeam "Groningen Combinatie"]
[BlackTeam "Amstelveen Zukertort"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 c6 6. Qc2 Be7 7. e3 Bg4 8. h3 Bh5 9. f4 h6 10. Bxf6 Bxf6 11. Bd3 Bh4+ 12. Kf1 Qe7 13. Qd2 Bg6 14. Nf3 Nd7 15. g3 Bf6 16. Bxg6 fxg6 17. Kg2 g5 18. Ne5 Qe6 19. Rae1 gxf4 20. exf4 Bxe5 21. dxe5 h5 22. Rhf1 0-0 23. Kh2 Rf7 24. Qf2 g6 25. Ne2 c5 26. Ng1 Raf8 27. Nf3 Rf5 28. Qc2 Kg7 29. b4 b6 30. Qb3 Re8 31. Ng5 Qc6 32. b5 Qb7 33. Nf3 d4 34. Nh4 Rff8 35. e6 Nb8 36. Qd3 Rf6 37. f5 Qd5 38. Nxg6 c4 39. Nf4 Qxf5 40. Qxd4 Kh6 41. Re5 1-0

[Event "BEL-chT 2223"]
[Site "Belgium"]
[Date "2023.03.05"]
[Round "8.4"]
[White "Ernst, Sipke"]
[Black "Saiboulatov, Danial"]
[Result "1-0"]
[ECO "E11"]
[WhiteElo "2526"]
[BlackElo "2371"]
[PlyCount "53"]
[EventDate "2022.09.25"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "BEL"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]
[WhiteTeam "KBSK Brugge"]
[BlackTeam "Charleroi CREC"]
[WhiteTeamCountry "BEL"]
[BlackTeamCountry "BEL"]

1. d4 e6 2. c4 Bb4+ 3. Bd2 a5 4. Nf3 d6 5. Nc3 Nf6 6. Qc2 b6 7. e4 Bb7 8. Bd3 Nbd7 9. a3 Bxc3 10. Bxc3 Qe7 11. e5 Nh5 12. Be4 d5 13. cxd5 exd5 14. Bf5 Nf4 15. 0-0 g6 16. Qd2 Ne6 17. Bxe6 fxe6 18. b4 axb4 19. axb4 b5 20. Rxa8+ Bxa8 21. Qd3 Bc6 22. Bd2 Nb6 23. Bg5 Qxb4 24. Bf6 Rf8 25. Ng5 Kd7 26. Nxe6 Re8 27. Ng7 1-0

[Event "Bundesliga 2223"]
[Site "Germany"]
[Date "2023.02.26"]
[Round "9.6"]
[White "Beerdsen, Thomas"]
[Black "Ernst, Sipke"]
[Result "0-1"]
[ECO "C29"]
[WhiteElo "2521"]
[BlackElo "2538"]
[PlyCount "74"]
[EventDate "2022.10.21"]
[EventType "team-tourn"]
[EventRounds "15"]
[EventCountry "GER"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]
[WhiteTeam "Muelheim Nord"]
[BlackTeam "Hamburger SK"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. Nf3 Be7 6. d4 c5 7. Bd3 Nxc3 8. bxc3 c4 9. Be2 Nc6 10. 0-0 h6 11. Rb1 Qa5 12. Qe1 Qxa2 13. Rb2 Qa5 14. Qg3 Be6 15. Rxb7 0-0-0 16. Rb1 Qxc3 17. Bd2 Qxc2 18. Rfc1 Qg6 19. Qe1 Bf5 20. Rb5 Be4 21. Be3 Kc7 22. Bf4 Rb8 23. e6+ Bd6 24. Bxd6+ Kxd6 25. Nh4 Qxe6 26. Qg3+ Kd7 27. Rc5 g5 28. Nf3 Rb3 29. Qf2 Rb2 30. Ne5+ Nxe5 31. dxe5 Rhb8 32. Rf1 Rd2 33. Ra1 Ke8 34. Rc7 Rxe2 35. Qc5 Rxg2+ 36. Kf1 Rgb2 37. Raxa7 Bd3+ 0-1

[Event "Bundesliga 2223"]
[Site "Germany"]
[Date "2023.02.25"]
[Round "8.6"]
[White "Ernst, Sipke"]
[Black "Van Wely, Loek"]
[Result "0-1"]
[ECO "D45"]
[WhiteElo "2538"]
[BlackElo "2629"]
[PlyCount "76"]
[EventDate "2022.10.21"]
[EventType "team-tourn"]
[EventRounds "15"]
[EventCountry "GER"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]
[WhiteTeam "Hamburger SK"]
[BlackTeam "Solingen"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. d4 d5 2. c4 c6 3. Nc3 e6 4. e3 Nf6 5. Nf3 Nbd7 6. Qc2 Bd6 7. b3 0-0 8. Be2 b6 9. 0-0 Bb7 10. Bb2 Re8 11. Rad1 Qe7 12. Rfe1 Rad8 13. Bf1 e5 14. dxe5 Nxe5 15. Nd4 dxc4 16. Nf5 Qe6 17. Nxd6 Rxd6 18. Rxd6 Qxd6 19. Rd1 Qe6 20. Ne4 cxb3 21. Nxf6+ gxf6 22. axb3 c5 23. e4 Qg4 24. h3 Bxe4 25. Qc1 Nf3+ 26. Kh1 Qf5 27. Qe3 Bc6 28. Qh6 Ne5 29. Bxe5 Qxe5 30. f4 Qb2 31. Rd3 Be4 32. Rg3+ Bg6 33. Kg1 Qd4+ 34. Kh2 Re3 35. h4 Rxg3 36. Kxg3 Qe3+ 37. Kh2 Qf2 38. h5 Qxf1 0-1

[Event "NED-chT 2223"]
[Site "Netherlands"]
[Date "2023.02.11"]
[Round "6.1"]
[White "Beerdsen, Thomas"]
[Black "Ernst, Sipke"]
[Result "1-0"]
[ECO "C56"]
[WhiteElo "2520"]
[BlackElo "2515"]
[PlyCount "57"]
[EventDate "2022.09.17"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]
[WhiteTeam "Apeldoorn Amevo"]
[BlackTeam "Groningen Combinatie"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 exd4 5. e5 d5 6. Bb5 Ne4 7. Nxd4 a6 8. Bxc6+ bxc6 9. Nxc6 Qd7 10. Nd4 c5 11. Ne2 Be7 12. 0-0 Bb7 13. Nd2 Nxd2 14. Bxd2 d4 15. Nf4 Qc6 16. Qg4 g6 17. Qg3 c4 18. Rfe1 0-0-0 19. a3 g5 20. Nh5 Qg6 21. Nf6 c3 22. bxc3 Qxc2 23. Bxg5 d3 24. Qh3+ Kc7 25. e6 d2 26. Red1 Rd3 27. Qf5 Rxc3 28. Bf4+ Kc8 29. Qe5 1-0

[Event "NED-ch"]
[Site "Groningen"]
[Date "2022.12.22"]
[Round "1.4"]
[White "Ernst, Sipke"]
[Black "Van Foreest, Lucas"]
[Result "1/2-1/2"]
[ECO "E46"]
[WhiteElo "2512"]
[BlackElo "2577"]
[PlyCount "60"]
[EventDate "2022.12.21"]
[EventType "k.o."]
[EventRounds "4"]
[EventCountry "NED"]
[SourceTitle "CBM 211 Extra"]
[Source "ChessBase"]
[SourceDate "2023.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 0-0 5. Bd2 c5 6. a3 Bxc3 7. Bxc3 Ne4 8. Rc1 b6 9. Nf3 Ba6 10. Be2 Nxc3 11. Rxc3 cxd4 12. Nxd4 Nc6 13. Nxc6 dxc6 14. Qxd8 Rfxd8 15. c5 Bxe2 16. Kxe2 b5 17. f3 a5 18. g4 Kf8 19. h4 Rd5 20. e4 Rd4 21. Rd1 Rad8 22. Rxd4 Rxd4 23. Rc1 Ke7 24. Ke3 Rd8 25. f4 h5 26. g5 Rd7 27. Ra1 Rd8 28. Rf1 Ke8 29. Ra1 Ke7 30. Rf1 Ke8 1/2-1/2

[Event "NED-ch"]
[Site "Groningen"]
[Date "2022.12.22"]
[Round "1.2"]
[White "Van Foreest, Lucas"]
[Black "Ernst, Sipke"]
[Result "1/2-1/2"]
[ECO "A62"]
[WhiteElo "2577"]
[BlackElo "2512"]
[PlyCount "79"]
[EventDate "2022.12.21"]
[EventType "k.o."]
[EventRounds "4"]
[EventCountry "NED"]
[SourceTitle "CBM 211 Extra"]
[Source "ChessBase"]
[SourceDate "2023.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. Bg2 Bg7 8. Nf3 0-0 9. 0-0 Re8 10. Bf4 Nh5 11. Bg5 Qd7 12. a4 Na6 13. e4 Nb4 14. Nd2 b6 15. Nc4 Ba6 16. Nb5 Bxb5 17. axb5 Bf8 18. f4 Qxb5 19. b3 Qd7 20. g4 Ng7 21. f5 b5 22. Ne3 Rec8 23. f6 Ne8 24. Qd2 a5 25. Nf5 gxf5 26. Rxf5 Kh8 27. Raf1 c4 28. Bh6 Nxf6 29. Rxf6 Bxh6 30. Qxh6 Qxg4 31. Rxf7 Qg6 32. Rf8+ Rxf8 33. Rxf8+ Rxf8 34. Qxf8+ Qg8 35. Qxd6 cxb3 36. Qf6+ Qg7 37. Qd8+ Qg8 38. Qf6+ Qg7 39. Qd8+ Qg8 40. Qf6+ 1/2-1/2

[Event "NED-ch"]
[Site "Groningen"]
[Date "2022.12.22"]
[Round "1.3"]
[White "Van Foreest, Lucas"]
[Black "Ernst, Sipke"]
[Result "1-0"]
[ECO "A46"]
[WhiteElo "2577"]
[BlackElo "2512"]
[PlyCount "75"]
[EventDate "2022.12.21"]
[EventType "k.o."]
[EventRounds "4"]
[EventCountry "NED"]
[SourceTitle "CBM 211 Extra"]
[Source "ChessBase"]
[SourceDate "2023.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 a6 3. Bf4 e6 4. Nbd2 b5 5. e4 Bb7 6. Bd3 d6 7. 0-0 Nbd7 8. a4 b4 9. c3 bxc3 10. bxc3 Be7 11. Rb1 Ra7 12. Qc2 h6 13. Nc4 0-0 14. Be3 d5 15. exd5 Bxd5 16. Nfe5 Qa8 17. f3 c5 18. Qf2 cxd4 19. Bxd4 Nxe5 20. Nxe5 Rc7 21. Rb6 a5 22. Rfb1 Nd7 23. Nxd7 Rxd7 24. Qg3 f6 25. Qg6 Rfd8 26. Rb8 Qc6 27. Qh7+ Kf8 28. Bb5 Rxb8 29. Qh8+ Kf7 30. Qxb8 Qc7 31. Bxd7 Qxd7 32. Qb5 Bc6 33. Qxa5 e5 34. Bf2 e4 35. Qh5+ Kg8 36. fxe4 Bxe4 37. Re1 Qxa4 38. Qh4 1-0

[Event "NED-ch"]
[Site "Groningen"]
[Date "2022.12.21"]
[Round "1.1"]
[White "Ernst, Sipke"]
[Black "Van Foreest, Lucas"]
[Result "1/2-1/2"]
[ECO "A07"]
[WhiteElo "2512"]
[BlackElo "2577"]
[PlyCount "109"]
[EventDate "2022.12.21"]
[EventType "k.o."]
[EventRounds "4"]
[EventCountry "NED"]
[SourceTitle "CBM 211 Extra"]
[Source "ChessBase"]
[SourceDate "2023.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.01.31"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 b6 3. Bg2 Bb7 4. b3 e6 5. Bb2 Nf6 6. 0-0 Be7 7. c4 dxc4 8. bxc4 0-0 9. e3 c5 10. Qe2 Ne8 11. Nc3 Nd7 12. Rfd1 a6 13. a4 Qc7 14. h4 Rb8 15. d3 Bf6 16. Rac1 Nd6 17. e4 Nc8 18. Nb1 Bxb2 19. Qxb2 Ne7 20. Nc3 Nc6 21. Ne2 Rfd8 22. Ra1 Nde5 23. Nxe5 Nxe5 24. a5 bxa5 25. Qa3 Qe7 26. d4 Nxc4 27. Qc3 Nd6 28. Qxc5 Rbc8 29. Qa3 Qd7 30. d5 Nc4 31. Qa2 exd5 32. exd5 a4 33. Nf4 Qe7 34. Re1 Qd6 35. Rab1 Ba8 36. Bh3 Rc5 37. Qxa4 Ne5 38. Bg2 Rc4 39. Qa5 Rc5 40. Qa4 Rc4 41. Qa5 Rc5 42. Qb6 Nc4 43. Qxd6 Nxd6 44. Rb6 Kf8 45. Rxa6 Bb7 46. Ra7 Rb5 47. Bf1 Rb6 48. Raa1 g6 49. Rac1 h6 50. Bg2 Ne8 51. Rb1 Rxb1 52. Rxb1 Ba8 53. Rd1 Nf6 54. Rd4 Rd7 55. Ra4 1/2-1/2

[Event "NED-chT 2223"]
[Site "Netherlands"]
[Date "2022.12.17"]
[Round "5.6"]
[White "Pardo Simon, David"]
[Black "Ernst, Sipke"]
[Result "0-1"]
[ECO "A01"]
[WhiteElo "2460"]
[BlackElo "2515"]
[PlyCount "68"]
[EventDate "2022.09.17"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]
[WhiteTeam "Kennemer Combinatie"]
[BlackTeam "Groningen Combinatie"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. b3 d5 2. Bb2 Bf5 3. d3 e6 4. Nd2 Nf6 5. g3 Be7 6. Bg2 h6 7. e4 Bh7 8. Qe2 0-0 9. Nh3 c5 10. e5 Nfd7 11. 0-0 Nc6 12. Nf3 b5 13. Nf4 Qc7 14. h4 Bf5 15. Bh3 Bxh3 16. Nxh3 a5 17. a4 bxa4 18. Rxa4 d4 19. Re1 Nb6 20. Raa1 a4 21. Nf4 axb3 22. cxb3 Rxa1 23. Rxa1 Nd7 24. Re1 Rb8 25. Nh5 Rxb3 26. Bc1 Bf8 27. Nd2 Rb4 28. Nc4 Rb1 29. Na3 Ra1 30. Qb2 Qa5 31. Kf1 Qc3 32. Qxc3 dxc3 33. f4 Nd4 34. g4 c4 0-1

[Event "Bundesliga 2223"]
[Site "Germany"]
[Date "2022.11.27"]
[Round "4.5"]
[White "Vogel, Roven"]
[Black "Ernst, Sipke"]
[Result "1/2-1/2"]
[ECO "D31"]
[WhiteElo "2463"]
[BlackElo "2538"]
[PlyCount "98"]
[EventDate "2022.10.21"]
[EventType "team-tourn"]
[EventRounds "15"]
[EventCountry "GER"]
[SourceTitle "CBM 211"]
[Source "ChessBase"]
[SourceDate "2022.12.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.12.31"]
[SourceQuality "1"]
[WhiteTeam "Dresden TU"]
[BlackTeam "Hamburger SK"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. c4 e6 2. d4 d5 3. Nc3 a6 4. cxd5 exd5 5. Nf3 h6 6. Bf4 Nf6 7. e3 Bd6 8. Be5 c6 9. Qc2 0-0 10. Bd3 Bxe5 11. Nxe5 c5 12. dxc5 Re8 13. Nf3 d4 14. Ne4 Nxe4 15. Bxe4 Qa5+ 16. Nd2 dxe3 17. fxe3 Nd7 18. 0-0 Qxc5 19. Qb3 Nf6 20. Rac1 Qe5 21. Bf3 Be6 22. Nc4 Bxc4 23. Rxc4 b5 24. Rc6 Ra7 25. Rd1 Qg5 26. Qc3 Rae7 27. Rc5 Qxe3+ 28. Qxe3 Rxe3 29. Rc6 a5 30. Ra6 a4 31. Rb6 R8e5 32. Rb8+ Kh7 33. Bc6 Ng4 34. Rf1 a3 35. bxa3 Rxa3 36. Bxb5 f5 37. Bc4 Rc3 38. Rc8 Rce3 39. Bg8+ Kg6 40. Rc6+ Nf6 41. Bb3 h5 42. Rc4 Kg5 43. h4+ Kh6 44. Bc2 g6 45. Rc6 Nd5 46. Bb3 Ne7 47. Rc4 Nd5 48. Rc6 Ne7 49. Rc4 Nd5 1/2-1/2

[Event "Bundesliga 2223"]
[Site "Germany"]
[Date "2022.11.26"]
[Round "3.5"]
[White "Ernst, Sipke"]
[Black "Blohberger, Felix"]
[Result "1/2-1/2"]
[ECO "E00"]
[WhiteElo "2538"]
[BlackElo "2493"]
[PlyCount "59"]
[EventDate "2022.10.21"]
[EventType "team-tourn"]
[EventRounds "15"]
[EventCountry "GER"]
[SourceTitle "CBM 211"]
[Source "ChessBase"]
[SourceDate "2022.12.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.12.31"]
[SourceQuality "1"]
[WhiteTeam "Hamburger SK"]
[BlackTeam "Berlin SF"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Nd2 c5 5. Ngf3 cxd4 6. a3 Bxd2+ 7. Qxd2 b6 8. Bg2 Bb7 9. 0-0 Bxf3 10. exf3 Nc6 11. f4 Rc8 12. b4 d5 13. cxd5 Nxd5 14. Bb2 Nc3 15. Rac1 Ne7 16. Bxc3 dxc3 17. Qxd8+ Kxd8 18. Rfd1+ Ke8 19. Rd3 c2 20. Rd2 g6 21. Be4 h5 22. h4 Nf5 23. Rdxc2 Rxc2 24. Bxc2 Nd6 25. Ba4+ Kd8 26. Rc6 Nf5 27. Rc3 Nd6 28. Rc6 Nf5 29. Rc3 Nd6 30. Rc6 1/2-1/2

[Event "Titled Tuesday intern op 08th Nov Early"]
[Site "Chess.com INT"]
[Date "2022.11.08"]
[Round "3"]
[White "Ernst, Sipke"]
[Black "Namitbir, Singh Walia"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "2515"]
[BlackElo "2339"]
[PlyCount "150"]
[EventDate "2022.11.08"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 d5 3. c3 Nbd7 4. e3 h6 5. Bh4 e6 6. Nd2 Be7 7. Bd3 c5 8. f4 b6 9. Qf3 Bb7 10. Ne2 a6 11. 0-0 0-0 12. Kh1 b5 13. g4 Ne4 14. Bxe7 Nxd2 15. Bxd8 Nxf3 16. Be7 Rfe8 17. Bxc5 Nxc5 18. Rxf3 Nxd3 19. b3 e5 20. fxe5 Nxe5 21. dxe5 d4 22. Nxd4 Rac8 23. Rc1 Rxe5 24. Kg2 Rce8 25. Re1 Rc8 26. Rc1 Bxf3+ 27. Kxf3 g6 28. h4 Kg7 29. e4 Rec5 30. Ne2 f6 31. Ke3 h5 32. gxh5 Rxh5 33. Rh1 Kf7 34. Rd1 Rxh4 35. Rd7+ Kg8 36. Rd6 Rh3+ 37. Kd4 Rh2 38. Kd3 Kg7 39. Rxa6 Rd8+ 40. Nd4 Rh3+ 41. Ke2 Re8 42. Ne6+ Kf7 43. Nc5 Rxc3 44. b4 Rc4 45. a3 f5 46. Rb6 fxe4 47. Ke3 Rc3+ 48. Kd4 Rxa3 49. Nxe4 Rd8+ 50. Ke5 Re8+ 51. Kf4 Kg7 52. Rb7+ Kh6 53. Nf6 Rh8 54. Ng4+ Kh5 55. Rxb5+ Kh4 56. Ne5 Rf8+ 57. Ke4 Re8 58. Rb7 g5 59. Rh7+ Kg3 60. Rg7 Re3+ 61. Kxe3 Rxe5+ 62. Kd4 Rf5 63. Kc4 g4 64. b5 Rf1 65. b6 Rb1 66. Kc5 Kh3 67. Rh7+ Kg2 68. b7 g3 69. Kc6 Kg1 70. Kc7 g2 71. Rh6 Rxb7+ 72. Kxb7 Kf1 73. Rf6+ Ke1 74. Rg6 Kf1 75. Rxg2 Kxg2 1/2-1/2

[Event "Titled Tuesday intern op 08th Nov Early"]
[Site "Chess.com INT"]
[Date "2022.11.08"]
[Round "4"]
[White "Ernst, Sipke"]
[Black "Selbes, Tarik"]
[Result "1/2-1/2"]
[ECO "B38"]
[WhiteElo "2515"]
[BlackElo "2270"]
[PlyCount "127"]
[EventDate "2022.11.08"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 0-0 6. Be3 c5 7. Nf3 cxd4 8. Nxd4 Nc6 9. Be2 Nxd4 10. Bxd4 Be6 11. Rc1 Rc8 12. b3 a6 13. 0-0 Qa5 14. f4 b5 15. f5 Bd7 16. cxb5 axb5 17. Bxf6 Bxf6 18. Nd5 Bg5 19. Rxc8 Rxc8 20. fxg6 hxg6 21. Qd4 Qxa2 22. Rf2 Rc1+ 23. Bf1 Qa1 24. Qxa1 Rxa1 25. g3 Bxh3 26. Rf3 e6 27. Nc3 b4 28. Nb5 Re1 29. Nxd6 Bg4 30. Rf2 Be3 31. Nc4 Bd4 32. Kg2 Bxf2 33. Kxf2 Rb1 34. Nd2 Rb2 35. Ke3 Bd1 36. Bc4 Kg7 37. e5 g5 38. Kd3 Kg6 39. Ke3 Kf5 40. Bd3+ Kxe5 41. Nc4+ Kf6 42. Nxb2 Bxb3 43. Bc4 Bc2 44. Nd3 Bxd3 45. Kxd3 Ke5 46. Ke3 f5 47. Bb3 f4+ 48. gxf4+ gxf4+ 49. Kf3 Kf5 50. Bc2+ Kg5 51. Bb3 e5 52. Bd5 Kf6 53. Be4 Ke7 54. Bc2 Kd6 55. Ke4 Kc5 56. Kxe5 f3 57. Ke4 f2 58. Bd3 b3 59. Ke3 f1Q 60. Bxf1 Kb4 61. Bd3 Kc3 62. Ke2 b2 63. Ke3 b1Q 64. Bxb1 1/2-1/2

[Event "Titled Tuesday intern op 08th Nov Early"]
[Site "Chess.com INT"]
[Date "2022.11.08"]
[Round "5"]
[White "Forgacs, Attila Jr"]
[Black "Ernst, Sipke"]
[Result "0-1"]
[ECO "C82"]
[WhiteElo "2286"]
[BlackElo "2515"]
[PlyCount "120"]
[EventDate "2022.11.08"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Qd3 0-0 11. Be3 Bxe3 12. Qxe3 f6 13. exf6 Qxf6 14. Nbd2 Nxd2 15. Qxd2 Kh8 16. Rae1 Rad8 17. Nd4 Bg8 18. Nxc6 Qxc6 19. Re7 Rfe8 20. Rfe1 Rxe7 21. Rxe7 Re8 22. Qe3 Rxe7 23. Qxe7 Qg6 24. h4 c6 25. Qe2 Qd6 26. Bc2 c5 27. Qe8 d4 28. cxd4 Qxd4 29. Bf5 h6 30. g3 Qd1+ 31. Kh2 Qf3 32. Bg6 Qxf2+ 33. Kh3 Qf1+ 34. Kh2 Qf6 35. h5 Qxb2+ 36. Kh3 Qxa2 37. Qc6 Qe6+ 38. Qxe6 Bxe6+ 39. Kg2 b4 40. Kf2 a5 41. Ke3 a4 42. Kd2 a3 43. Kc2 c4 44. Kb1 c3 45. Bc2 Bf7 46. g4 Be6 47. Bd1 Kg8 48. g5 hxg5 49. h6 gxh6 50. Ka1 Kg7 51. Bc2 Kf6 52. Bd3 Ke5 53. Bc2 h5 54. Bd1 h4 55. Bf3 h3 56. Bh1 g4 57. Bc6 g3 58. Bf3 c2 59. Be4 c1Q+ 60. Bb1 Qc3# 0-1

[Event "Titled Tuesday intern op 08th Nov Early"]
[Site "Chess.com INT"]
[Date "2022.11.08"]
[Round "2"]
[White "Martinez Alcantara, Jose Eduardo"]
[Black "Ernst, Sipke"]
[Result "1-0"]
[ECO "C81"]
[WhiteElo "2597"]
[BlackElo "2515"]
[PlyCount "85"]
[EventDate "2022.11.08"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Be7 10. Be3 0-0 11. c3 Qd7 12. Nbd2 Nxd2 13. Bxd2 Bg4 14. Rfe1 Nd8 15. h3 Bh5 16. Rad1 Ne6 17. Bc1 c6 18. Bc2 Bg6 19. Nh2 Rae8 20. Ng4 Bc5 21. Kh1 Bb6 22. f4 Nc5 23. Be3 h5 24. Nh2 Bxc2 25. Qxc2 f5 26. Nf3 Qc7 27. Bxc5 Bxc5 28. Nd4 g6 29. b4 Bb6 30. Rd3 c5 31. bxc5 Qxc5 32. Qd1 Qc4 33. Ree3 h4 34. g3 Bxd4 35. Rxd4 Qxa2 36. gxh4 Re6 37. Rg3 Kf7 38. Rxd5 Qc4 39. Rd7+ Kg8 40. Qd2 a5 41. h5 Qe4+ 42. Kh2 a4 43. Rd6 1-0

[Event "Titled Tuesday intern op 08th Nov Early"]
[Site "Chess.com INT"]
[Date "2022.11.08"]
[Round "1"]
[White "Sreyas, Payyappat"]
[Black "Ernst, Sipke"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2145"]
[BlackElo "2515"]
[PlyCount "50"]
[EventDate "2022.11.08"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. e5 d5 7. Bb5 Ne4 8. cxd4 Bb6 9. Nc3 0-0 10. Be3 Ba5 11. Qb3 Bg4 12. Bxc6 bxc6 13. 0-0 Rb8 14. Qc2 Rxb2 15. Qxb2 Bxc3 16. Qc2 Bxa1 17. Rxa1 Bxf3 18. gxf3 Ng5 19. Kg2 Qd7 20. Bxg5 Rb8 21. Rc1 Rb6 22. a3 h6 23. Bd2 c5 24. dxc5 Rg6+ 25. Kf1 Qb5+ 0-1

[Event "Titled Tuesday intern op 08th Nov Early"]
[Site "Chess.com INT"]
[Date "2022.11.08"]
[Round "6"]
[White "Starosta, Martyna"]
[Black "Ernst, Sipke"]
[Result "1-0"]
[ECO "C81"]
[WhiteElo "1991"]
[BlackElo "2515"]
[PlyCount "101"]
[EventDate "2022.11.08"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Be7 10. Rd1 0-0 11. c4 bxc4 12. Bxc4 Bc5 13. Be3 Bxe3 14. Qxe3 Qb8 15. Bb3 Na5 16. Nd4 Qb6 17. Na3 Rab8 18. Bc2 Nc5 19. f4 f5 20. Nxe6 Nxe6 21. Qxb6 Rxb6 22. Rxd5 c5 23. b3 Nxf4 24. Rxc5 Ne6 25. Rxa5 Rc6 26. Nc4 Nd4 27. Bd3 Rd8 28. Re1 Kf8 29. Bxf5 Nxf5 30. Rf1 g6 31. g4 Ke7 32. gxf5 gxf5 33. Rxf5 Rg6+ 34. Kf2 Rdg8 35. Ne3 Rc8 36. e6 Rxe6 37. Rae5 Rc1 38. Rxe6+ Kxe6 39. Rh5 Rb1 40. Rh6+ Ke5 41. Kf3 a5 42. Nc4+ Kd4 43. Nxa5 Rb2 44. Rxh7 Rxa2 45. Nc6+ Kc5 46. Ne5 Kd5 47. Nd3 Rd2 48. Rd7+ Ke6 49. Nc5+ Ke5 50. Rxd2 Kf5 51. b4 1-0

[Event "NED-chT 2223"]
[Site "Netherlands"]
[Date "2022.11.05"]
[Round "3.5"]
[White "Ernst, Sipke"]
[Black "Garrido Dominguez, Jesus"]
[Result "1/2-1/2"]
[ECO "A10"]
[WhiteElo "2515"]
[BlackElo "2412"]
[PlyCount "95"]
[EventDate "2022.09.17"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]
[WhiteTeam "Groningen Combinatie"]
[BlackTeam "Charlois Europoort"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. Nf3 d6 2. c4 e5 3. Nc3 f5 4. d3 Nf6 5. g3 Be7 6. Bg2 0-0 7. 0-0 Qe8 8. Bg5 h6 9. Bxf6 Bxf6 10. Nd2 c6 11. Qc2 Na6 12. Rab1 Nc7 13. b4 Ne6 14. b5 c5 15. e3 Bd8 16. Nd5 Nc7 17. Qc3 Nxd5 18. Bxd5+ Kh8 19. Rbe1 a6 20. Qa3 Ra7 21. f4 Bb6 22. Qb2 axb5 23. cxb5 Ba5 24. fxe5 dxe5 25. Re2 Bxd2 26. Rxd2 b6 27. Rdf2 Re7 28. e4 f4 29. gxf4 Bh3 30. f5 Bxf1 31. Rxf1 Rf6 32. Rf3 Qh5 33. Qg2 g6 34. h3 Rf8 35. Rg3 Qd1+ 36. Kh2 g5 37. Qb2 Rf6 38. a4 Qxa4 39. h4 Qa7 40. hxg5 hxg5 41. Rh3+ Rh7 42. Qxe5 Qg7 43. Rxh7+ Kxh7 44. Kg3 Rh6 45. Qe8 g4 46. e5 Rh3+ 47. Kg2 Qg5 48. Qf7+ 1/2-1/2

[Event "Titled Tuesday intern op 01st Nov Late"]
[Site "Chess.com INT"]
[Date "2022.11.01"]
[Round "8"]
[White "Ernst, Sipke"]
[Black "Becerra, Juan David"]
[Result "1-0"]
[ECO "A06"]
[WhiteElo "2515"]
[BlackElo "2292"]
[PlyCount "151"]
[EventDate "2022.11.01"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. Nf3 d5 2. b3 Bg4 3. Ne5 Bf5 4. g4 Be4 5. f3 e6 6. h4 Be7 7. Bg2 Bxh4+ 8. Kf1 Bg6 9. d4 Nc6 10. Nxg6 hxg6 11. g5 Rh5 12. f4 Nge7 13. Bf3 Rh7 14. Bg4 Qd6 15. e3 0-0-0 16. Qf3 Rdh8 17. Ba3 Qd7 18. Nd2 Nf5 19. Bxf5 gxf5 20. Kg2 f6 21. g6 Rh6 22. Rag1 Rxg6+ 23. Kf1 Rgh6 24. Qg2 g5 25. Nf3 g4 26. Nd2 Nb4 27. Bxb4 Qb5+ 28. Qe2 Qxb4 29. Qd3 Qa3 30. Kg2 a6 31. Qc3 Kb8 32. Qc5 Qxc5 33. dxc5 e5 34. b4 c6 35. c3 Kc7 36. Nb3 exf4 37. exf4 Rh5 38. Nd4 Kd7 39. Rh2 R5h7 40. Rgh1 Rh5 41. a4 R8h7 42. a5 Rh8 43. Kf1 g3 44. Rh3 Rg8 45. Kg2 Rg4 46. Nf3 Rxf4 47. Rxh4 Rhxh4 48. Rxh4 Re4 49. Rxe4 fxe4 50. Nd4 f5 51. Kxg3 Ke7 52. Kf4 Kf6 53. Nxf5 Ke6 54. Nd4+ Kf6 55. Ne2 Ke6 56. Nc1 Kf6 57. Nb3 Ke6 58. Nd4+ Kf6 59. Nb3 Ke6 60. Na1 Kf6 61. Nc2 Ke6 62. Ne3 Kf6 63. Nf5 Ke6 64. Nd6 b5 65. axb6 Kd7 66. b7 Kc7 67. Ke3 Kb8 68. Kd4 Kc7 69. c4 Kb8 70. cxd5 cxd5 71. c6 Kc7 72. Ne8+ Kb8 73. Kc5 e3 74. Kb6 e2 75. Nd6 e1Q 76. c7# 1-0

[Event "Titled Tuesday intern op 01st Nov Late"]
[Site "Chess.com INT"]
[Date "2022.11.01"]
[Round "11"]
[White "Ernst, Sipke"]
[Black "Diaz Rosas, Julio Cesar"]
[Result "1-0"]
[ECO "A70"]
[WhiteElo "2515"]
[BlackElo "2324"]
[PlyCount "101"]
[EventDate "2022.11.01"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. h4 d5 3. h5 h6 4. Nf3 c5 5. c3 Nc6 6. e3 Bg4 7. Be2 Bxh5 8. Ne5 Bxe2 9. Qxe2 Rc8 10. Nd2 e6 11. f4 Qb6 12. g4 Nxe5 13. dxe5 Ne4 14. Nxe4 dxe4 15. Qc4 Qc6 16. a4 a6 17. b3 Rd8 18. a5 Be7 19. Ra4 Qd5 20. 0-0 Qxc4 21. Rxc4 Rd3 22. Kf2 0-0 23. Ke2 Rfd8 24. Rh1 R8d5 25. Rf1 f5 26. exf6 Bxf6 27. Rxe4 Rxc3 28. Rxe6 Rxb3 29. Rd1 Rxd1 30. Kxd1 c4 31. e4 Bc3 32. Re8+ Kh7 33. f5 Bxa5 34. e5 Rd3+ 35. Ke2 Rd4 36. Kf3 c3 37. e6 Bb4 38. Rc8 Rd1 39. Be3 Rf1+ 40. Ke4 Re1 41. Kd3 a5 42. Bd4 Rd1+ 43. Ke4 Re1+ 44. Kd5 a4 45. Rc7 b5 46. Rxg7+ Kh8 47. Rb7+ Kg8 48. Rb8+ Bf8 49. f6 c2 50. e7 Kh7 51. exf8Q 1-0

[Event "Titled Tuesday intern op 01st Nov Late"]
[Site "Chess.com INT"]
[Date "2022.11.01"]
[Round "3"]
[White "Ernst, Sipke"]
[Black "Esipenko, Andrey"]
[Result "0-1"]
[ECO "B00"]
[WhiteElo "2515"]
[BlackElo "2680"]
[PlyCount "53"]
[EventDate "2022.11.01"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. Nf3 Nc6 2. e4 d6 3. h3 g6 4. d4 Nf6 5. c3 Bg7 6. Bb5 0-0 7. Nbd2 e5 8. Bxc6 bxc6 9. 0-0 Nd7 10. b3 Re8 11. Re1 a5 12. a3 d5 13. Bb2 dxe4 14. Nxe5 f5 15. Nxc6 Qf6 16. d5 Nc5 17. Nc4 Bd7 18. N6xa5 f4 19. b4 Nd3 20. Rxe4 Rxe4 21. Qxd3 Rae8 22. Nd2 Re2 23. Nac4 g5 24. d6 c6 25. Nb6 Bf5 26. Qc4+ Kh8 27. Qc5 0-1

[Event "Titled Tuesday intern op 01st Nov Late"]
[Site "Chess.com INT"]
[Date "2022.11.01"]
[Round "1"]
[White "Ernst, Sipke"]
[Black "Ismayil, Malak"]
[Result "1/2-1/2"]
[ECO "B08"]
[WhiteElo "2515"]
[BlackElo "1941"]
[PlyCount "82"]
[EventDate "2022.11.01"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. Nf3 Nf6 2. Nc3 g6 3. e4 Bg7 4. d4 d6 5. Bg5 Nc6 6. Qd2 0-0 7. 0-0-0 a6 8. Bh6 b5 9. Bxg7 Kxg7 10. Bd3 Bg4 11. e5 dxe5 12. dxe5 Nh5 13. Be4 Qxd2+ 14. Rxd2 Bxf3 15. Bxf3 Nxe5 16. Bxa8 Rxa8 17. Re2 f6 18. g3 Kf7 19. Rd1 Ng7 20. f4 Nc6 21. Rd7 Ne6 22. Rd3 Ncd4 23. Re1 c5 24. Rde3 Rd8 25. Ne2 Rd6 26. Rd3 c4 27. Re3 Nf5 28. Rf3 Nc5 29. Nc3 b4 30. Nd1 a5 31. Rf2 Nd4 32. Re3 a4 33. a3 b3 34. cxb3 Nd3+ 35. Rxd3 cxd3 36. bxa4 Nb3+ 37. Kb1 Re6 38. Ka2 Nc1+ 39. Kb1 Nb3 40. Ka2 Nc1+ 41. Kb1 Nb3 1/2-1/2

[Event "Titled Tuesday intern op 01st Nov Late"]
[Site "Chess.com INT"]
[Date "2022.11.01"]
[Round "6"]
[White "Ernst, Sipke"]
[Black "Predke, Alexandr"]
[Result "0-1"]
[ECO "A14"]
[WhiteElo "2515"]
[BlackElo "2684"]
[PlyCount "66"]
[EventDate "2022.11.01"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. 0-0 0-0 6. b3 d4 7. e3 c5 8. exd4 cxd4 9. d3 Nc6 10. Re1 Nd7 11. Ba3 Bxa3 12. Nxa3 Nc5 13. Nc2 a5 14. Rb1 Qd6 15. a3 Bd7 16. Ng5 h6 17. Ne4 Nxe4 18. Bxe4 f5 19. Bg2 e5 20. b4 axb4 21. axb4 e4 22. dxe4 d3 23. c5 Qf6 24. Qxd3 Ne5 25. Qd2 f4 26. Qxf4 Qxf4 27. gxf4 Rxf4 28. b5 Ra2 29. Nd4 Rfxf2 30. Bf1 Rfd2 31. c6 bxc6 32. bxc6 Rxd4 33. Re2 Rxe2 0-1

[Event "Titled Tuesday intern op 01st Nov Late"]
[Site "Chess.com INT"]
[Date "2022.11.01"]
[Round "4"]
[White "Estrada Nieto, Julian"]
[Black "Ernst, Sipke"]
[Result "0-1"]
[ECO "C03"]
[WhiteElo "2241"]
[BlackElo "2515"]
[PlyCount "116"]
[EventDate "2022.11.01"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 h6 4. Bd3 Nf6 5. e5 Nfd7 6. Ne2 c5 7. c3 b6 8. 0-0 Ba6 9. Bxa6 Nxa6 10. Nf3 g6 11. Ng3 Nc7 12. h4 h5 13. Bg5 Be7 14. Qd2 a5 15. a4 Bxg5 16. Nxg5 c4 17. Qf4 Qe7 18. Rfe1 Rf8 19. Nh7 Rh8 20. Nf6+ Kd8 21. b3 cxb3 22. Reb1 Ne8 23. Nxd7 Qxd7 24. Rxb3 Rb8 25. Rab1 Kc7 26. Rb5 Ng7 27. c4 dxc4 28. Rc1 Kb7 29. Ne4 Ka7 30. Nd6 Nf5 31. Rxc4 Nxd6 32. exd6 Rhc8 33. Rc7+ Rxc7 34. dxc7 Rc8 35. d5 Qxc7 36. Qd4 e5 37. Rxa5+ Kb7 38. Qb4 Qc1+ 39. Kh2 Qc4 40. Qxc4 Rxc4 41. Rb5 Rxh4+ 42. Kg3 Rxa4 43. d6 f6 44. d7 Rg4+ 45. Kf3 Rd4 46. g3 Kc6 47. Rb1 Rxd7 48. Rc1+ Kd5 49. Ra1 Ke6 50. Ra6 Rd3+ 51. Ke2 Rd6 52. Ke3 g5 53. f3 Kf5 54. Ra4 Rc6 55. g4+ hxg4 56. fxg4+ Ke6 57. Ra6 Kd5 58. Kd3 Kc5 0-1

[Event "Titled Tuesday intern op 01st Nov Late"]
[Site "Chess.com INT"]
[Date "2022.11.01"]
[Round "10"]
[White "Faizrakhmanov, Ramil"]
[Black "Ernst, Sipke"]
[Result "1-0"]
[ECO "E32"]
[WhiteElo "2469"]
[BlackElo "2515"]
[PlyCount "53"]
[EventDate "2022.11.01"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 Nc6 3. Nf3 e6 4. Nc3 Bb4 5. Qc2 0-0 6. g3 d6 7. Bg2 e5 8. dxe5 dxe5 9. 0-0 Bxc3 10. Qxc3 Re8 11. b3 Bg4 12. h3 Bxf3 13. Bxf3 Nd4 14. Re1 e4 15. Bg2 c5 16. Be3 Qd6 17. Bf1 Rad8 18. Rad1 Qe5 19. Kh1 b6 20. Rd2 Rd7 21. Red1 Red8 22. Bf4 Qe6 23. Bg5 h6 24. Bxf6 Qxf6 25. e3 Nf3 26. Qxf6 Rxd2 27. Qxd8+ 1-0

[Event "Titled Tuesday intern op 01st Nov Late"]
[Site "Chess.com INT"]
[Date "2022.11.01"]
[Round "9"]
[White "Goncalves, Davi Sulzbacher"]
[Black "Ernst, Sipke"]
[Result "0-1"]
[ECO "A50"]
[WhiteElo "2282"]
[BlackElo "2515"]
[PlyCount "76"]
[EventDate "2022.11.01"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 Nc6 3. d5 Ne5 4. Nc3 e6 5. e4 Bb4 6. f4 Nxe4 7. fxe5 Qh4+ 8. g3 Nxg3 9. Nf3 Qe4+ 10. Kf2 Nxh1+ 11. Kg2 Bxc3 12. bxc3 g5 13. Bd3 Qg4+ 14. Kxh1 b5 15. Be2 bxc4 16. Nxg5 Qf5 17. Bf3 Bb7 18. Be4 Qxe5 19. Qf3 exd5 20. Qxf7+ Kd8 21. Bf4 Qe7 22. Bxc7+ Kxc7 23. Qxe7 dxe4 24. Ne6+ Kc8 25. Nc5 Bc6 26. Rf1 e3+ 27. Ne4 Rb8 28. Rf8+ Rxf8 29. Qxf8+ Kb7 30. Qf4 Re8 31. Kg1 Rxe4 32. Qf1 e2 33. Qe1 Re6 34. Kf2 Rf6+ 35. Ke3 Re6+ 36. Kd4 Kc8 37. Kc5 h5 38. a4 a5 0-1

[Event "Titled Tuesday intern op 01st Nov Late"]
[Site "Chess.com INT"]
[Date "2022.11.01"]
[Round "2"]
[White "Kekic, Armin"]
[Black "Ernst, Sipke"]
[Result "0-1"]
[ECO "B00"]
[WhiteElo "2138"]
[BlackElo "2515"]
[PlyCount "88"]
[EventDate "2022.11.01"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. c3 b6 3. d4 Bb7 4. Bd3 e6 5. Nf3 Nf6 6. Qe2 Be7 7. 0-0 cxd4 8. cxd4 Nc6 9. Nc3 Nb4 10. Bb5 a6 11. Ba4 b5 12. Bb3 d5 13. e5 Ne4 14. Be3 0-0 15. Rfc1 Rc8 16. Nd2 Nxc3 17. bxc3 Nc6 18. f4 Ba3 19. Rc2 f5 20. exf6 Qxf6 21. g3 Rc7 22. Nf3 Rfc8 23. Bf2 Nd8 24. Qd3 Nf7 25. Re1 Rc6 26. h4 R8c7 27. Ng5 Nxg5 28. hxg5 Qg6 29. Qf3 b4 30. Rce2 bxc3 31. Bxd5 exd5 32. Qxd5+ Re6 33. Qd8+ Qe8 34. Qxe8+ Rxe8 35. Rxe8+ Kf7 36. R8e5 c2 37. Be3 c1Q 38. Bxc1 Bxc1 39. Kf2 Bb2 40. R1e2 Bxd4+ 41. Ke1 Bxe5 42. Rxe5 Re7 43. Rxe7+ Kxe7 44. Kd2 Ke6 0-1

[Event "Titled Tuesday intern op 01st Nov Late"]
[Site "Chess.com INT"]
[Date "2022.11.01"]
[Round "5"]
[White "Manukian, Artak"]
[Black "Ernst, Sipke"]
[Result "0-1"]
[ECO "C45"]
[WhiteElo "2196"]
[BlackElo "2515"]
[PlyCount "46"]
[EventDate "2022.11.01"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. e5 Nd5 7. Bd3 Be7 8. 0-0 0-0 9. Qh5 g6 10. Qh6 f5 11. Nc3 Nxc3 12. bxc3 d5 13. f4 Be6 14. Be3 c5 15. Rab1 c4 16. Be2 Rf7 17. Rfd1 Qc8 18. Qh3 c6 19. Qf3 Bf8 20. Qf2 Qa6 21. Bf3 Qa5 22. Bd4 Rd8 23. Bxa7 Qxa7 0-1

[Event "Titled Tuesday intern op 01st Nov Late"]
[Site "Chess.com INT"]
[Date "2022.11.01"]
[Round "7"]
[White "Popilski, Gil"]
[Black "Ernst, Sipke"]
[Result "1-0"]
[ECO "A50"]
[WhiteElo "2455"]
[BlackElo "2515"]
[PlyCount "51"]
[EventDate "2022.11.01"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 Nc6 3. a3 e6 4. Nc3 d6 5. Bg5 h6 6. Bxf6 Qxf6 7. Nf3 g5 8. e3 Bg7 9. Bd3 g4 10. Nd2 h5 11. h3 e5 12. d5 Nb8 13. Nde4 Qe7 14. Ng3 Na6 15. hxg4 Bxg4 16. Be2 Nc5 17. Bxg4 hxg4 18. Rxh8+ Bxh8 19. Qxg4 e4 20. Ke2 Bxc3 21. bxc3 Qe5 22. Rh1 Qxc3 23. Qg8+ Ke7 24. Nf5+ Kf6 25. Qg7+ Kxf5 26. g4# 1-0

[Event "Titled Tuesday intern op 25th Oct Early"]
[Site "Chess.com INT"]
[Date "2022.10.25"]
[Round "6"]
[White "Begunov, Konstantin"]
[Black "Ernst, Sipke"]
[Result "0-1"]
[ECO "D13"]
[WhiteElo "2325"]
[BlackElo "2538"]
[PlyCount "100"]
[EventDate "2022.10.25"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. cxd5 cxd5 5. Bf4 Nc6 6. e3 e6 7. Bd3 Be7 8. Nf3 0-0 9. h3 Bd7 10. 0-0 Qa5 11. Qe2 Rfc8 12. Rfc1 a6 13. Ne5 Qd8 14. Nxc6 Bxc6 15. Rc2 b5 16. Rac1 Bb7 17. Nb1 Rxc2 18. Rxc2 Rc8 19. Rxc8 Qxc8 20. Qc2 Qxc2 21. Bxc2 Ne4 22. Kf1 f6 23. Ke2 g5 24. Bb8 Kf7 25. Nd2 Nd6 26. Ba7 h5 27. Bc5 Nc4 28. Bxe7 Kxe7 29. Nxc4 dxc4 30. f3 h4 31. a3 e5 32. Kd2 exd4 33. exd4 a5 34. Be4 Ba6 35. Kc3 Kd6 36. Bg6 Ke6 37. Bh7 f5 38. Bg8+ Kd6 39. a4 b4+ 40. Kd2 f4 41. Bf7 c3+ 42. bxc3 bxc3+ 43. Kxc3 Bf1 44. Bh5 Bxg2 45. Bg4 Bf1 46. Bf5 Be2 47. Be4 Bd1 48. Kc4 Bxa4 49. d5 Bd7 50. Kd4 Bxh3 0-1

[Event "Titled Tuesday intern op 25th Oct Early"]
[Site "Chess.com INT"]
[Date "2022.10.25"]
[Round "7"]
[White "Ernst, Sipke"]
[Black "Baskakov, Egor"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "2538"]
[BlackElo "2215"]
[PlyCount "105"]
[EventDate "2022.10.25"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 b6 7. Nf3 Bb7 8. Bb5+ c6 9. Bd3 Nd7 10. 0-0 Be7 11. Qe2 0-0 12. Bf4 c5 13. Rad1 cxd4 14. cxd4 Rc8 15. Rfe1 Bb4 16. Bd2 Qe7 17. h4 h6 18. Bb1 Rfd8 19. Bxb4 Qxb4 20. d5 exd5 21. e5 Nf8 22. Nd4 Rc4 23. Qd3 Qc3 24. Qxc3 Rxc3 25. Nb5 Rc5 26. Nd6 Ba6 27. f4 Ng6 28. Bxg6 fxg6 29. Rd4 Bc8 30. Re3 Be6 31. Kh2 Rc2 32. Ra3 Rd7 33. Rda4 a5 34. Rd4 Rdc7 35. Rdd3 d4 36. Nb5 Rd7 37. Rxd4 Rxd4 38. Nxd4 Rxa2 39. Rc3 Bd5 40. Rc8+ Kh7 41. Rd8 Bxg2 42. e6 Bd5+ 43. Kg3 Ra3+ 44. Kf2 Bxe6 45. Nxe6 g5 46. f5 Ra2+ 47. Ke3 Ra3+ 48. Kd2 Ra2+ 49. Kd3 Ra3+ 50. Kc2 Rf3 51. Nf8+ Kg8 52. Ng6+ Kf7 53. Rf8# 1-0

[Event "Titled Tuesday intern op 25th Oct Late"]
[Site "Chess.com INT"]
[Date "2022.10.25"]
[Round "1"]
[White "Ernst, Sipke"]
[Black "Bogaudinov, Rushan"]
[Result "1-0"]
[ECO "E20"]
[WhiteElo "2538"]
[BlackElo "2003"]
[PlyCount "95"]
[EventDate "2022.10.25"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Bb4+ 5. Nc3 0-0 6. Bg2 c5 7. 0-0 cxd4 8. Nxd4 e5 9. Nc2 Bxc3 10. bxc3 Be6 11. Ne3 e4 12. cxd5 Nxd5 13. Bxe4 Nxc3 14. Qxd8 Nxe2+ 15. Kg2 Rxd8 16. Bxb7 Nd7 17. Bxa8 Rxa8 18. Re1 Nd4 19. Bb2 Nf5 20. Nxf5 Bxf5 21. Bd4 Be6 22. a4 a6 23. Rab1 h5 24. f3 Rd8 25. Red1 Rc8 26. Rbc1 Rb8 27. Rb1 Rc8 28. Rdc1 Rd8 29. Kf2 Nf8 30. Be3 Ng6 31. Rb6 Ne5 32. Rc3 a5 33. Rb5 Nc4 34. Rxh5 g6 35. Rc5 Nxe3 36. Kxe3 Ra8 37. h4 Kg7 38. g4 Ra7 39. h5 gxh5 40. Rxh5 Kf6 41. Rcc5 Rb7 42. Rb5 Rc7 43. Rhc5 Re7 44. Kf4 Bd7 45. Rb6+ Kg7 46. Rc7 Kf8 47. Rb8+ Kg7 48. Rbb7 1-0

[Event "Titled Tuesday intern op 25th Oct Early"]
[Site "Chess.com INT"]
[Date "2022.10.25"]
[Round "2"]
[White "Ernst, Sipke"]
[Black "Bortnyk, Olexandr"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "2538"]
[BlackElo "2604"]
[PlyCount "149"]
[EventDate "2022.10.25"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d6 2. e4 Nf6 3. Nc3 Nbd7 4. Nf3 e5 5. Bc4 Be7 6. 0-0 c6 7. a4 h6 8. Re1 Qc7 9. a5 Nf8 10. b3 Ng6 11. Bf1 Bg4 12. Be3 0-0 13. h3 Be6 14. a6 b6 15. d5 cxd5 16. Nxd5 Bxd5 17. exd5 Rac8 18. Bb5 Ne4 19. Bc6 f5 20. Nd2 Nc3 21. Qh5 Rf6 22. Nc4 Rb8 23. Bd2 Ne4 24. Rxe4 fxe4 25. Na3 Bd8 26. Nb5 Qf7 27. Be3 Qe7 28. Ra4 Nf4 29. Qg4 Qf7 30. g3 Nxd5 31. Bxd5 Qxd5 32. Nxa7 Ra8 33. Nc8 b5 34. c4 Qd3 35. cxb5 Qxb3 36. Rxe4 Qxb5 37. a7 Qb7 38. Rb4 Qc7 39. Nb6 Rxa7 40. Nd5 Ra1+ 41. Kh2 Qc6 42. Qc4 Qxc4 43. Nxf6+ Bxf6 44. Rxc4 Kf7 45. g4 Ke6 46. Kg2 d5 47. Rc6+ Kd7 48. Rb6 d4 49. Bxh6 Ra2 50. Kf3 Bd8 51. Rb7+ Kc6 52. Rxg7 Ra3+ 53. Ke4 Rxh3 54. Rg6+ Kc5 55. Bf8+ Kc4 56. Rc6+ Kb5 57. Rd6 Bc7 58. Rd7 Kc6 59. Rf7 d3 60. Rf3 d2 61. Rxh3 d1Q 62. Rc3+ Kd7 63. Rd3+ Qxd3+ 64. Kxd3 Ke6 65. Ke4 Bb6 66. f3 Bc7 67. Bb4 Bb8 68. Bd2 Bd6 69. Be3 Bf8 70. g5 Bg7 71. Bd2 Bh8 72. Bc3 Bg7 73. f4 exf4 74. Bxg7 f3 75. Bd4 1-0

[Event "Titled Tuesday intern op 25th Oct Late"]
[Site "Chess.com INT"]
[Date "2022.10.25"]
[Round "2"]
[White "Ernst, Sipke"]
[Black "Caruana, Fabiano"]
[Result "1-0"]
[ECO "A32"]
[WhiteElo "2538"]
[BlackElo "2763"]
[PlyCount "77"]
[EventDate "2022.10.25"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 c5 4. Nf3 cxd4 5. Nxd4 a6 6. Bg2 Qc7 7. Nd2 Nc6 8. Nxc6 dxc6 9. 0-0 e5 10. b3 Bc5 11. Bb2 0-0 12. Qc2 Re8 13. Ne4 Nxe4 14. Bxe4 h6 15. Rad1 a5 16. Bc3 Bh3 17. Rfe1 Qe7 18. Bf5 Bxf5 19. Qxf5 g6 20. Qd7 Qf6 21. e3 Re7 22. Qg4 h5 23. Qe4 Qe6 24. Rd2 Qg4 25. Qxg4 hxg4 26. h3 gxh3 27. Kh2 Bb4 28. Rc1 f6 29. Kxh3 Kf7 30. a4 Bxc3 31. Rxc3 Ra6 32. Rd6 Rb6 33. g4 g5 34. Kg3 e4 35. Rd4 Rb4 36. Kg2 Kg6 37. Rd6 Rh7 38. Re6 Rh1 39. Kxh1 1-0

[Event "Titled Tuesday intern op 25th Oct Late"]
[Site "Chess.com INT"]
[Date "2022.10.25"]
[Round "4"]
[White "Ernst, Sipke"]
[Black "Howell, David"]
[Result "0-1"]
[ECO "D85"]
[WhiteElo "2538"]
[BlackElo "2667"]
[PlyCount "65"]
[EventDate "2022.10.25"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3 c5 8. Be3 Qa5 9. Qd2 Nc6 10. Rc1 cxd4 11. cxd4 Qxd2+ 12. Kxd2 0-0 13. d5 Rd8 14. Ke1 Na5 15. Bg5 Bd7 16. Bd3 Rdc8 17. Ke2 e6 18. Rxc8+ Rxc8 19. Rc1 Rxc1 20. Bxc1 exd5 21. exd5 b5 22. Be3 a6 23. Bd4 Bg4 24. Ke3 Bxf3 25. gxf3 Nb7 26. f4 Bxd4+ 27. Kxd4 Kf8 28. f5 Ke7 29. fxg6 hxg6 30. f4 Kd6 31. f5 g5 32. f6 Nc5 33. Bg6 0-1

[Event "Titled Tuesday intern op 25th Oct Early"]
[Site "Chess.com INT"]
[Date "2022.10.25"]
[Round "1"]
[White "Ernst, Sipke"]
[Black "Sibilio, Mario"]
[Result "1-0"]
[ECO "B08"]
[WhiteElo "2538"]
[BlackElo "2279"]
[PlyCount "115"]
[EventDate "2022.10.25"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d6 2. e4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. Bg5 h6 6. Be3 Nc6 7. d5 Nb8 8. Be2 c5 9. Nd2 a6 10. a4 Nbd7 11. 0-0 0-0 12. a5 Rb8 13. Nc4 b5 14. axb6 Nxb6 15. Na5 Qc7 16. Nc6 Ra8 17. f3 e6 18. Na5 exd5 19. exd5 Re8 20. Qd2 Bb7 21. Nxb7 Qxb7 22. Bxh6 Nbxd5 23. Bxg7 Kxg7 24. Bc4 Ne3 25. Bb3 c4 26. Ba4 Nxf1 27. Rxf1 Qb6+ 28. Kh1 Re6 29. Ne2 Qe3 30. Qxe3 Rxe3 31. Nd4 Rb8 32. b3 cxb3 33. cxb3 Nd5 34. Kg1 Nc3 35. Bc6 Rd3 36. Nc2 Rd2 37. Ne3 d5 38. Re1 Rxb3 39. Nf1 Rd1 40. Rxd1 Nxd1 41. Bxd5 Rb1 42. Be4 Ra1 43. Bd3 Ne3 44. Bxa6 Nxg2 45. Kxg2 Rxa6 46. Ne3 f5 47. f4 Kf6 48. Kf2 Ra2+ 49. Kg3 Rd2 50. Ng2 g5 51. fxg5+ Kxg5 52. Nf4 Ra2 53. h4+ Kf6 54. Ng2 Ke5 55. h5 Ra3+ 56. Kh4 f4 57. Ne1 f3 58. Kg3 1-0

[Event "Titled Tuesday intern op 25th Oct Early"]
[Site "Chess.com INT"]
[Date "2022.10.25"]
[Round "4"]
[White "Ernst, Sipke"]
[Black "Tworuszka, Michal"]
[Result "1-0"]
[ECO "E40"]
[WhiteElo "2538"]
[BlackElo "2260"]
[PlyCount "53"]
[EventDate "2022.10.25"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 d5 5. a3 Bxc3+ 6. bxc3 Ne4 7. Bd3 f5 8. Ne2 0-0 9. 0-0 c6 10. a4 Rf6 11. f3 Nd6 12. Qb3 Nd7 13. Ba3 dxc4 14. Bxc4 Nxc4 15. Qxc4 Nb6 16. Qb3 Rh6 17. a5 Nd5 18. c4 Nc7 19. Nf4 Qh4 20. h3 g5 21. Nd3 Qg3 22. Qb4 Bd7 23. Qe7 Rxh3 24. Bd6 f4 25. exf4 Qh2+ 26. Kf2 Qxg2+ 27. Kxg2 1-0

