[Event "Karlsruhe Grenke op"]
[Site "Karlsruhe"]
[Date "2024.03.29"]
[Round "2"]
[White "De Boer, Bas"]
[Black "Froewis, Georg"]
[Result "0-1"]
[ECO "E11"]
[WhiteElo "2219"]
[BlackElo "2450"]
[PlyCount "96"]
[EventDate "2024.03.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB14_2024"]
[SourceDate "2024.04.01"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.01"]
[SourceQuality "1"]

1. d4 e6 2. c4 d5 3. Nf3 Nf6 4. g3 Bb4+ 5. Bd2 Be7 6. Qc2 c6 7. Bg2 Nbd7 8. 0-0 b6 9. b3 a5 10. Nc3 Ba6 11. Bg5 Rc8 12. Rfd1 0-0 13. e4 h6 14. Bxf6 Nxf6 15. Ne5 Qc7 16. Qb2 c5 17. Nb5 Bxb5 18. cxb5 Nxe4 19. Bxe4 dxe4 20. Qe2 f5 21. Rac1 Bd6 22. Nc6 f4 23. Qxe4 fxg3 24. fxg3 Bxg3 25. Rc2 Bd6 26. Qxe6+ Kh8 27. Ne5 Rf6 28. Qg4 Re8 29. Qh5 Ree6 30. Re1 Qe7 31. Rce2 cxd4 32. Nc6 Rg6+ 33. Kh1 Rxe2 34. Qxe2 Qh4 35. Rg1 Rxg1+ 36. Kxg1 Bxh2+ 37. Kf1 Qh3+ 38. Ke1 Qc3+ 39. Kf1 Qc1+ 40. Kg2 Qg1+ 41. Kf3 Qg3+ 42. Ke4 Bg1 43. Kd5 Qg5+ 44. Kd6 Qg6+ 45. Kc7 d3 46. Qf3 Bc5 47. Kb7 d2 48. Ne5 Qf6 0-1

[Event "Rilton Cup 51st"]
[Site "Stockholm"]
[Date "2023.12.31"]
[Round "5"]
[White "Eggleston, David"]
[Black "De Boer, Bas"]
[Result "1/2-1/2"]
[ECO "B52"]
[WhiteElo "2353"]
[BlackElo "2204"]
[PlyCount "72"]
[EventDate "2023.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "CB02_2024"]
[SourceDate "2024.01.10"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.10"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. c4 Nc6 5. Nc3 e5 6. d3 Nge7 7. a3 Ng6 8. Rb1 Be7 9. b4 0-0 10. bxc5 dxc5 11. Bxc6 Bxc6 12. Nd5 f5 13. h4 Bd6 14. g3 Qd7 15. h5 Ne7 16. Nh4 Ba4 17. Qe2 fxe4 18. dxe4 Nc6 19. Be3 Nd4 20. Bxd4 exd4 21. g4 d3 22. Qxd3 Qxg4 23. Ne3 Qe6 24. Nhf5 Bc6 25. Nxd6 Rad8 26. Rd1 Rf6 27. Nd5 Bxd5 28. Nxb7 Bxe4 29. Qxd8+ Rf8 30. Qd6 Qf5 31. Qxc5 Qf3 32. Rg1 Qc3+ 33. Kf1 Qh3+ 34. Ke1 Qc3+ 35. Kf1 Qh3+ 36. Ke1 Qc3+ 1/2-1/2

[Event "Rilton Cup 51st"]
[Site "Stockholm"]
[Date "2023.12.30"]
[Round "4"]
[White "De Boer, Bas"]
[Black "Czernek, Tymon"]
[Result "1-0"]
[ECO "E52"]
[WhiteElo "2204"]
[BlackElo "2324"]
[PlyCount "71"]
[EventDate "2023.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "CB02_2024"]
[SourceDate "2024.01.10"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Bb4 4. e3 Nf6 5. Bd3 0-0 6. Nf3 b6 7. cxd5 exd5 8. 0-0 Bg4 9. a3 Be7 10. Qc2 Bxf3 11. gxf3 c5 12. dxc5 bxc5 13. Rd1 Qb6 14. Nxd5 Nxd5 15. Bxh7+ Kh8 16. Rxd5 g6 17. Qe4 Re8 18. Bd2 Kxh7 19. Bc3 Kg8 20. Re5 Kf8 21. Rxe7 Rxe7 22. Qxa8 Rb7 23. Rd1 Qb3 24. Rd2 Ke7 25. Bb4 Rb5 26. Bxc5+ Kf6 27. Bd4+ Kg5 28. Qxa7 Kh6 29. h4 Qe6 30. Qc7 Nc6 31. Bc3 Rh5 32. Qf4+ g5 33. Qd6 gxh4 34. Qf8+ Kg5 35. Qg7+ Qg6 36. Rd5+ 1-0

[Event "Rilton Cup 51st"]
[Site "Stockholm"]
[Date "2023.12.29"]
[Round "3"]
[White "Kaasen, Tor Fredrik"]
[Black "De Boer, Bas"]
[Result "1/2-1/2"]
[ECO "D40"]
[WhiteElo "2473"]
[BlackElo "2204"]
[PlyCount "79"]
[EventDate "2023.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "CB02_2024"]
[SourceDate "2024.01.10"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. e3 a6 6. cxd5 exd5 7. Be2 c4 8. Ne5 b5 9. 0-0 Be7 10. a3 Bb7 11. b3 Nbd7 12. Rb1 Qc7 13. f4 Nb6 14. Qc2 0-0 15. bxc4 Nxc4 16. Nxc4 bxc4 17. Bf3 Bc6 18. g4 Qd7 19. g5 Ne8 20. Qg2 Nc7 21. Bg4 Qd6 22. a4 Rfb8 23. Qc2 Rxb1 24. Qxb1 Qb4 25. Bd2 Rb8 26. Qa2 Qa3 27. Rb1 Rxb1+ 28. Qxb1 Qb4 29. Qf5 Qb7 30. Qe5 Bb4 31. Kf2 a5 32. f5 Ne8 33. f6 Bd6 34. Qf5 Bxh2 35. Bf3 g6 36. Qh3 Bd6 37. Qh1 Nc7 38. Qh3 Ne6 39. Qg2 Nc7 40. Qh1 1/2-1/2

[Event "Rilton Cup 51st"]
[Site "Stockholm"]
[Date "2023.12.28"]
[Round "2"]
[White "Del Rey, Diego"]
[Black "De Boer, Bas"]
[Result "1/2-1/2"]
[ECO "A08"]
[WhiteElo "2302"]
[BlackElo "2204"]
[PlyCount "56"]
[EventDate "2023.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "CB02_2024"]
[SourceDate "2024.01.10"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.10"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. 0-0 e5 5. d3 Bd6 6. Nc3 Nge7 7. Nd2 Be6 8. e4 d4 9. Nd5 0-0 10. c4 dxc3 11. bxc3 Rc8 12. f4 exf4 13. gxf4 f5 14. c4 Nd4 15. Nb3 Nec6 16. e5 Be7 17. Be3 Nxb3 18. Qxb3 b6 19. a4 Qd7 20. Qb5 Rfd8 21. Rfd1 Bf8 22. Bf2 Kh8 23. Kh1 Bf7 24. Bh4 Be7 25. Nxe7 Nxe7 26. Qb2 Re8 27. a5 Ng6 28. Bf2 bxa5 1/2-1/2

[Event "Rilton Cup 51st"]
[Site "Stockholm"]
[Date "2023.12.27"]
[Round "1"]
[White "De Boer, Bas"]
[Black "Olsson, William"]
[Result "0-1"]
[ECO "D12"]
[WhiteElo "2204"]
[BlackElo "2379"]
[PlyCount "66"]
[EventDate "2023.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "CB02_2024"]
[SourceDate "2024.01.10"]
[SourceVersion "1"]
[SourceVersionDate "2024.01.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bf5 5. Nc3 e6 6. Nh4 Bg6 7. Be2 Nbd7 8. 0-0 Bd6 9. Nxg6 hxg6 10. h3 dxc4 11. Bxc4 Qe7 12. Bd2 e5 13. Re1 Nb6 14. Bf1 e4 15. Rc1 Qe6 16. b4 g5 17. b5 g4 18. bxc6 bxc6 19. h4 g3 20. fxg3 Bxg3 21. Ne2 Bxe1 22. Bxe1 0-0 23. Nf4 Qd7 24. g3 Nbd5 25. Bh3 Qb7 26. Ng2 a5 27. g4 Nb4 28. g5 Nfd5 29. Bf2 Rfe8 30. Bf5 g6 31. Bh3 Nxa2 32. Rc4 Nac3 33. Qg4 a4 0-1

[Event "Calvia Amateur op 20th"]
[Site "Calvia"]
[Date "2023.10.15"]
[Round "9"]
[White "De Boer, Bas"]
[Black "Laux, Dominik"]
[Result "1/2-1/2"]
[ECO "E04"]
[WhiteElo "2194"]
[BlackElo "2281"]
[PlyCount "48"]
[EventDate "2023.10.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 dxc4 5. Bg2 c6 6. 0-0 b5 7. b3 cxb3 8. Qxb3 Bb7 9. Bb2 Be7 10. Ne5 0-0 11. Nd2 Nfd7 12. Nd3 Qb6 13. Rac1 Na6 14. Ne4 Rfd8 15. Rc2 Rac8 16. Rfc1 Bf8 17. h4 c5 18. dxc5 Naxc5 19. Nexc5 Nxc5 20. Nxc5 Bxg2 21. Nd7 Qb7 22. Rxc8 Rxc8 23. Rxc8 Qxc8 24. Nxf8 Bd5 1/2-1/2

[Event "Calvia Amateur op 20th"]
[Site "Calvia"]
[Date "2023.10.14"]
[Round "8"]
[White "Voiteanu, Christian Gabriel"]
[Black "De Boer, Bas"]
[Result "0-1"]
[ECO "E04"]
[WhiteElo "2235"]
[BlackElo "2194"]
[PlyCount "73"]
[EventDate "2023.10.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 a5 6. Bg2 dxc4 7. Qc2 c5 8. Qxc4 b6 9. dxc5 Bxc5 10. Nc3 Nbd7 11. 0-0 0-0 12. Qh4 Bb7 13. Rfd1 Be7 14. Qh3 Qb8 15. Bf4 e5 16. Bg5 Nc5 17. Bxf6 Bxf6 18. Nd5 Bd8 19. Qh5 f5 20. Nh4 Qc8 21. Bh3 g5 22. Nxf5 Rxf5 23. Qe8+ Rf8 24. Qxf8+ Kxf8 25. Bxc8 Rxc8 26. Rac1 Kf7 27. f3 Ke6 28. e4 g4 29. fxg4 Rb8 30. Re1 Nxe4 31. Nc7+ Kf7 32. Rf1+ Kg8 33. Ne6 Bf6 34. Rce1 Re8 35. Nc7 Rc8 36. Nb5 Be7 37. h3 0-1

[Event "Calvia Amateur op 20th"]
[Site "Calvia"]
[Date "2023.10.13"]
[Round "7"]
[White "De Boer, Bas"]
[Black "Viskelis, Darius"]
[Result "1/2-1/2"]
[ECO "D34"]
[WhiteElo "2194"]
[BlackElo "2152"]
[PlyCount "63"]
[EventDate "2023.10.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 c5 4. cxd5 exd5 5. g3 Nc6 6. Bg2 Nf6 7. 0-0 Be6 8. Nc3 h6 9. b3 Be7 10. dxc5 Bxc5 11. Bb2 0-0 12. Rc1 Be7 13. Nd4 Nxd4 14. Qxd4 Qa5 15. Rfd1 Ba3 16. Bxa3 Qxa3 17. Rc2 Rfc8 18. Rcd2 Qc5 19. Qxc5 Rxc5 20. Nxd5 Nxd5 21. Bxd5 Bxd5 22. Rxd5 Rc2 23. Rd8+ Rxd8 24. Rxd8+ Kh7 25. a4 Rxe2 26. Rd7 b6 27. Rxa7 Rb2 28. Rb7 Rxb3 29. a5 b5 30. Kf1 b4 31. Ke2 Ra3 32. Rxb4 1/2-1/2

[Event "Calvia Amateur op 20th"]
[Site "Calvia"]
[Date "2023.10.12"]
[Round "6"]
[White "Galiana Salom, Juan Ramon"]
[Black "De Boer, Bas"]
[Result "0-1"]
[ECO "B70"]
[WhiteElo "2142"]
[BlackElo "2194"]
[PlyCount "128"]
[EventDate "2023.10.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[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 Nf6 5. Nc3 Nc6 6. Nb3 g6 7. Be2 Bg7 8. 0-0 0-0 9. Re1 Be6 10. Bg5 Rc8 11. Bf1 h6 12. Bh4 Ne5 13. Nd5 Nxd5 14. exd5 Bd7 15. c3 b5 16. Rc1 Re8 17. f3 Nc4 18. Rc2 b4 19. cxb4 Nxb2 20. Qc1 Qb6+ 21. Bf2 Qxb4 22. Rxc8 Rxc8 23. Qe3 Ra8 24. Qxe7 Re8 25. Re4 Qxe4 26. Qxe4 Rxe4 27. fxe4 Nd1 28. Bxa7 Nc3 29. Nd2 Nxa2 30. Nc4 Bf8 31. Bb8 Nc3 32. Nxd6 Bxd6 33. Bxd6 Nxe4 34. Bb4 f5 35. Bc4 Kf7 36. Ba3 Ke8 37. Bc1 h5 38. h4 Nd6 39. Bb3 Bb5 40. Bf4 Kd7 41. Kf2 Ne4+ 42. Ke3 Ke7 43. Kd4 Bf1 44. g3 Bb5 45. d6+ Ke8 46. Be6 Bd7 47. Bd5 Ba4 48. Ke5 Bd7 49. Ba8 Kf7 50. Bb7 Ke8 51. Bd5 Bb5 52. Kd4 Bd7 53. Kc4 Ba4 54. Kb4 Bd7 55. Ka5 Nf6 56. Bc4 Ne4 57. Kb6 Nf6 58. Kc7 Ba4 59. Be5 Nd7 60. Bd4 Nf8 61. Bd5 Bd7 62. Bc6 Ne6+ 63. Kb6 Nxd4 64. Bd5 Ne6 0-1

[Event "Calvia Amateur op 20th"]
[Site "Calvia"]
[Date "2023.10.11"]
[Round "5"]
[White "De Boer, Bas"]
[Black "Van Ee, Robin"]
[Result "1-0"]
[ECO "A09"]
[WhiteElo "2194"]
[BlackElo "2046"]
[PlyCount "39"]
[EventDate "2023.10.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. Nf3 d5 2. e3 c5 3. c4 d4 4. b4 Nf6 5. bxc5 Nc6 6. exd4 Nxd4 7. Bb2 e5 8. Nxd4 exd4 9. Qe2+ Be7 10. Qe5 d3 11. Qe3 Bf5 12. Bxf6 gxf6 13. Nc3 0-0 14. Nd5 Re8 15. 0-0-0 Qa5 16. Kb1 Bxc5 17. Qg3+ Kh8 18. Bxd3 Rg8 19. Bxf5 Rxg3 20. hxg3 1-0

[Event "Calvia Amateur op 20th"]
[Site "Calvia"]
[Date "2023.10.10"]
[Round "4"]
[White "Boyer, Christophe"]
[Black "De Boer, Bas"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1905"]
[BlackElo "2194"]
[PlyCount "114"]
[EventDate "2023.10.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. Bf4 c5 4. e3 Nc6 5. Be2 Bg4 6. dxc5 e6 7. 0-0 Bxc5 8. c4 0-0 9. Nc3 dxc4 10. Bxc4 Qe7 11. Be2 Rfd8 12. Qb3 h6 13. Rfd1 Bb4 14. Rxd8+ Rxd8 15. Rd1 Bxc3 16. Rxd8+ Qxd8 17. Qxb7 Na5 18. Qxa7 Bxb2 19. Bc7 Nc6 20. Qb6 Qd7 21. Bb5 Qd1+ 22. Bf1 Qc1 23. a4 Nd5 24. Qb7 Nxc7 25. Qxc7 Bxf3 26. gxf3 Qc3 27. Bb5 Ne5 28. Qd8+ Kh7 29. Kg2 Qc5 30. f4 Ng6 31. Kg3 Bf6 32. Qd3 Qc3 33. Qe4 Qd2 34. Be8 Bh4+ 35. Kh3 Bxf2 36. Bxf7 Qxe3+ 37. Qxe3 Bxe3 38. a5 Nxf4+ 39. Kg3 g5 40. a6 Kg7 41. Be8 Kf6 42. h4 Ba7 43. hxg5+ hxg5 44. Bd7 Nd5 45. Bc8 Ne3 46. Kf3 Kf5 47. Kg3 g4 48. Kf2 Ke5 49. Kg3 Kd6 50. Kf4 e5+ 51. Kg3 Ke7 52. Bb7 Kf6 53. Bc8 Kg5 54. Bd7 Nf5+ 55. Kg2 Kf4 56. Bc6 Nh4+ 57. Kh2 g3+ 0-1

[Event "Calvia Amateur op 20th"]
[Site "Calvia"]
[Date "2023.10.09"]
[Round "3"]
[White "De Boer, Bas"]
[Black "Hoffmann, Max"]
[Result "0-1"]
[ECO "A79"]
[WhiteElo "2194"]
[BlackElo "2090"]
[PlyCount "74"]
[EventDate "2023.10.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 c5 4. d5 exd5 5. cxd5 g6 6. e4 d6 7. Nf3 Bg7 8. Nd2 0-0 9. Be2 Re8 10. 0-0 Na6 11. Kh1 Nc7 12. a4 b6 13. f3 Rb8 14. Nc4 Ba6 15. Rb1 Bxc4 16. Bxc4 a6 17. Qd3 Nd7 18. f4 Nf6 19. e5 Ng4 20. Qg3 Nh6 21. Qd3 dxe5 22. d6 Ne6 23. fxe5 Ng4 24. Qg3 Nxe5 25. Bxa6 Qxd6 26. Be3 Rbd8 27. Bb5 Rf8 28. Rbd1 Nd4 29. Bf4 f6 30. Rfe1 Kh8 31. Ne4 Qe7 32. Nxf6 Bxf6 33. Rxe5 Nf5 34. Rxe7 Nxg3+ 35. Bxg3 Rxd1+ 36. Re1 Rxe1+ 37. Bxe1 Bxb2 0-1

[Event "Calvia Amateur op 20th"]
[Site "Calvia"]
[Date "2023.10.08"]
[Round "2"]
[White "Litfin, Boris"]
[Black "De Boer, Bas"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1910"]
[BlackElo "2194"]
[PlyCount "88"]
[EventDate "2023.10.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 Nd4 4. Bc4 e6 5. Nge2 Nf6 6. 0-0 a6 7. d3 Nc6 8. Bg5 Be7 9. f4 d6 10. a4 h6 11. Bh4 Nxe4 12. Bxe7 Nxc3 13. Nxc3 Nxe7 14. Qe2 0-0 15. Qf2 b6 16. Ne2 Nf5 17. d4 Bb7 18. dxc5 bxc5 19. Ra3 Rb8 20. Rh3 d5 21. Bd3 d4 22. Bxf5 exf5 23. Ng3 Be4 24. b3 Re8 25. Rh5 Qf6 26. Re1 Rbc8 27. Rh3 Re6 28. Qd2 Qg6 29. Qf2 Rce8 30. Nf1 Bd5 31. Rxe6 Qxe6 32. Rd3 Qe1 33. Rd2 Qc1 34. Re2 Rxe2 35. Qxe2 Qxf4 36. Qxa6 Qe4 37. Qc8+ Kh7 38. Kf2 Qxg2+ 39. Ke1 Qxc2 40. Ng3 Bxb3 41. a5 Be6 42. Qc7 d3 43. Qf4 Qb1+ 44. Kd2 c4 0-1

[Event "Calvia Amateur op 20th"]
[Site "Calvia"]
[Date "2023.10.07"]
[Round "1"]
[White "De Boer, Bas"]
[Black "Moore, John"]
[Result "1-0"]
[ECO "E05"]
[WhiteElo "2194"]
[BlackElo "1731"]
[PlyCount "89"]
[EventDate "2023.10.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 dxc4 5. Bg2 Nc6 6. 0-0 Be7 7. Qa4 0-0 8. Qxc4 Re8 9. Nc3 Nd5 10. e4 Nxc3 11. bxc3 a6 12. h4 Na5 13. Qd3 c5 14. e5 cxd4 15. Nxd4 Nc6 16. Qe3 Nxd4 17. cxd4 Rb8 18. Bd2 Bd7 19. Rfc1 Qb6 20. Rab1 Qd8 21. Rxb7 Rxb7 22. Bxb7 Qb6 23. Be4 Bb5 24. Qc3 Rd8 25. Be3 Qb8 26. Bc2 g6 27. Be4 Be2 28. Qc2 Bb5 29. h5 Kg7 30. h6+ Kg8 31. Rb1 Qc8 32. Qd2 f5 33. exf6 Bxf6 34. Rc1 Qd7 35. Bg5 Bxg5 36. Qxg5 Qxd4 37. Rc7 Qd1+ 38. Kh2 Qh5+ 39. Qxh5 gxh5 40. Bxh7+ Kf8 41. Bg6 Kg8 42. Bxh5 Rd2 43. Kg2 Rxa2 44. Bg6 Kf8 45. h7 1-0

[Event "Bruges Masters op"]
[Site "Bruges"]
[Date "2023.08.17"]
[Round "8"]
[White "De Boer, Bas"]
[Black "Bisby, Daniel L"]
[Result "0-1"]
[ECO "E71"]
[WhiteElo "2155"]
[BlackElo "2279"]
[PlyCount "98"]
[EventDate "2023.08.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[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. 0-0-0 cxd5 12. cxd5 a4 13. Kb1 Bd7 14. a3 Qa5 15. Na2 Qc7 16. h4 Rfc8 17. h5 Nb3 18. Qf2 Bxg4 19. Bb6 Qd7 20. fxg4 Qxg4 21. Qf3 Nxe4 22. Be3 Qxf3 23. Nxf3 Ng3 24. Rg1 Nxh5 25. Nc3 f5 26. Nb5 e4 27. Ng5 Be5 28. Ne6 f4 29. Bd4 Nxd4 30. Nexd4 f3 31. Bh3 Rc5 32. Nc3 f2 33. Rg4 e3 34. Nde2 Nf6 35. Rxa4 Rxa4 36. Nxa4 Rc4 37. Nac3 Bxc3 38. bxc3 Ne4 39. Bf1 Nd2+ 40. Kc2 Rg4 41. Kd3 Nc4 42. Rb1 Rh4 43. Ng3 Rg4 44. Ne2 h5 45. Nd4 Nd2 46. Rd1 Rg1 47. Ke2 h4 48. Nf3 Nxf3 49. Kxf3 h3 0-1

[Event "Bruges Masters op"]
[Site "Bruges"]
[Date "2023.08.15"]
[Round "5"]
[White "Bogner, Sebastian"]
[Black "De Boer, Bas"]
[Result "1-0"]
[ECO "A14"]
[WhiteElo "2537"]
[BlackElo "2155"]
[PlyCount "95"]
[EventDate "2023.08.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. c4 Nf6 2. Nf3 e6 3. g3 d5 4. Bg2 Be7 5. 0-0 0-0 6. b3 d4 7. e3 Nc6 8. exd4 Nxd4 9. Bb2 Bc5 10. Na3 e5 11. Nc2 Nxf3+ 12. Bxf3 Re8 13. Re1 Bd6 14. d4 e4 15. Bg2 c6 16. d5 Bg4 17. Qd2 cxd5 18. Bxf6 Qxf6 19. Qxd5 Rad8 20. Ne3 Bc8 21. Qa5 Be5 22. Rac1 b6 23. Qa4 Bd4 24. b4 Bd7 25. Qxa7 Bc6 26. b5 Re7 27. Qa4 Bb7 28. Qc2 h5 29. Re2 Red7 30. Rf1 Qe5 31. Bh3 Rc7 32. Rd1 Rf8 33. Qd2 Bxe3 34. Qxe3 Qc5 35. Rd4 f5 36. Red2 Qe5 37. Bf1 f4 38. gxf4 Rxf4 39. Bg2 Rcf7 40. Qg3 Qf6 41. Rd8+ Kh7 42. R8d6 Qf5 43. Bh3 Qe5 44. Qg6+ Kg8 45. Be6 Kh8 46. Bxf7 Rg4+ 47. Qxg4 hxg4 48. Bg6 1-0

[Event "Bruges Masters op"]
[Site "Bruges"]
[Date "2023.08.15"]
[Round "6"]
[White "De Boer, Bas"]
[Black "Elgersma, Onno"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2155"]
[BlackElo "2256"]
[PlyCount "53"]
[EventDate "2023.08.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[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. Nf3 d5 4. Nc3 a6 5. cxd5 exd5 6. Bg5 Be6 7. e3 Nbd7 8. h3 c6 9. Bd3 Bd6 10. Bf4 Qc7 11. Qd2 h6 12. 0-0 0-0 13. Rfc1 Rfe8 14. a4 Rad8 15. b4 Nb6 16. Bxd6 Qxd6 17. b5 axb5 18. axb5 c5 19. dxc5 Qxc5 20. Na4 Qd6 21. Nxb6 Qxb6 22. Qa5 Qd6 23. Qc7 Qxc7 24. Rxc7 Rd7 25. Rac1 Kf8 26. R7c2 Ne4 27. Nd4 1/2-1/2

[Event "Bruges Masters op"]
[Site "Bruges"]
[Date "2023.08.13"]
[Round "3"]
[White "Ondersteijn, Niels"]
[Black "De Boer, Bas"]
[Result "1/2-1/2"]
[ECO "C28"]
[WhiteElo "2375"]
[BlackElo "2155"]
[PlyCount "111"]
[EventDate "2023.08.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. Bc4 Nc6 4. d3 Na5 5. Bb3 Nxb3 6. axb3 d5 7. Nf3 d4 8. Ne2 Bd6 9. c3 dxc3 10. bxc3 0-0 11. 0-0 Re8 12. Ng3 c6 13. Re1 Bc7 14. h3 h6 15. Nh4 Kh7 16. Qf3 Be6 17. Nhf5 Ng8 18. Qe2 g6 19. Ne3 Re7 20. Qc2 Rd7 21. Rd1 a5 22. c4 b5 23. Bb2 f6 24. Ne2 Bb6 25. Bc1 Bf7 26. Kh1 a4 27. bxa4 bxc4 28. dxc4 Rxd1+ 29. Nxd1 Bxc4 30. Qxc4 Qxd1+ 31. Kh2 Qd7 32. Be3 Bxe3 33. fxe3 Kg7 34. Nc3 Ra7 35. Rd1 Qf7 36. Qc5 Rd7 37. Qxc6 Rc7 38. Qb5 Rxc3 39. Rd7 Ne7 40. Qb4 Rc4 41. Qb7 Kf8 42. a5 Qe8 43. a6 Rb4 44. Qc7 Rc4 45. Qb7 Rb4 46. Qa7 Rc4 47. Rd6 Rc6 48. Rxc6 Nxc6 49. Qb7 Kg8 50. Kg3 Qe6 51. a7 Nxa7 52. Qxa7 h5 53. Kf3 Qb3 54. Qa8+ Kg7 55. Qd8 Qf7 56. Qd6 1/2-1/2

[Event "Hilversum op"]
[Site "Hilversum"]
[Date "2023.06.25"]
[Round "6"]
[White "Bakija, Alan"]
[Black "De Boer, Bas"]
[Result "1-0"]
[ECO "A11"]
[WhiteElo "1994"]
[BlackElo "2217"]
[PlyCount "61"]
[EventDate "2023.06.23"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 c6 3. Nf3 d5 4. Bg2 dxc4 5. 0-0 Nbd7 6. Qc2 Nb6 7. Na3 Be6 8. Ne5 Qd4 9. Nxc6 bxc6 10. Bxc6+ Nfd7 11. Bxa8 Nxa8 12. d3 Nab6 13. Rd1 Bf5 14. Nxc4 e5 15. Be3 Qxc4 16. Qxc4 Nxc4 17. dxc4 Be6 18. Bxa7 Bxc4 19. Rdc1 Bxe2 20. Rc8+ Ke7 21. b4 h5 22. a4 h4 23. b5 hxg3 24. fxg3 Ke6 25. Bf2 e4 26. b6 Ne5 27. h4 Ba6 28. Ra8 Bb7 29. Rb8 Bc6 30. b7 Kd7 31. Rd8+ 1-0

[Event "Hilversum op"]
[Site "Hilversum"]
[Date "2023.06.24"]
[Round "3"]
[White "De Boer, Bas"]
[Black "Doolaard, Floris"]
[Result "1/2-1/2"]
[ECO "B14"]
[WhiteElo "2217"]
[BlackElo "2043"]
[PlyCount "49"]
[EventDate "2023.06.23"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 Nc6 3. Nc3 g6 4. e3 Nf6 5. d4 cxd4 6. exd4 d5 7. cxd5 Nxd5 8. Bc4 Nb6 9. Bb3 Bg7 10. Be3 0-0 11. h3 Na5 12. Bc2 Nac4 13. Bc1 Bd7 14. 0-0 Rc8 15. Qe2 Re8 16. Ne5 Be6 17. Rd1 Nxe5 18. dxe5 Qc7 19. f4 Red8 20. Rxd8+ Rxd8 21. Be4 Nd5 22. Nxd5 Bxd5 23. Bxd5 Rxd5 24. Be3 b6 25. Rc1 1/2-1/2

[Event "Hilversum op"]
[Site "Hilversum"]
[Date "2023.06.24"]
[Round "4"]
[White "Grote, Dirk"]
[Black "De Boer, Bas"]
[Result "1/2-1/2"]
[ECO "E35"]
[WhiteElo "2062"]
[BlackElo "2217"]
[PlyCount "44"]
[EventDate "2023.06.23"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Nc3 Bb4 5. cxd5 exd5 6. Bg5 h6 7. Bh4 0-0 8. e3 Be6 9. Qc2 Nbd7 10. a3 Be7 11. Bd3 a6 12. 0-0 c5 13. dxc5 Nxc5 14. Nd4 Rc8 15. Rac1 Nce4 16. Bxe4 Nxe4 17. Bxe7 Qxe7 18. Qd3 Nxc3 19. Rxc3 Rxc3 20. Qxc3 Rc8 21. Qd2 Rc4 22. Rd1 Bd7 1/2-1/2

[Event "Hilversum op"]
[Site "Hilversum"]
[Date "2023.06.23"]
[Round "2"]
[White "Ercan, Selman"]
[Black "De Boer, Bas"]
[Result "1/2-1/2"]
[ECO "E05"]
[WhiteElo "2044"]
[BlackElo "2217"]
[PlyCount "50"]
[EventDate "2023.06.23"]
[EventType "swiss"]
[EventRounds "6"]
[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 e6 3. Nf3 Nf6 4. g3 Be7 5. Bg2 0-0 6. 0-0 dxc4 7. Qc2 b5 8. a4 b4 9. Qxc4 Bb7 10. Bg5 Bd5 11. Qc2 Nbd7 12. Nbd2 h6 13. Bxf6 Nxf6 14. Rfd1 Rc8 15. Nb3 Be4 16. Qc1 c5 17. dxc5 Qc7 18. Qd2 a5 19. Rac1 Rfd8 20. Qe1 Rxd1 21. Qxd1 Rd8 22. Qe1 Bc6 23. Nfd4 Bxa4 24. c6 Nd5 25. e4 Nb6 1/2-1/2

[Event "Maastricht Limburg op 15th"]
[Site "Maastricht"]
[Date "2023.05.28"]
[Round "4"]
[White "Leenhouts, Koen"]
[Black "De Boer, Bas"]
[Result "1-0"]
[ECO "E48"]
[WhiteElo "2447"]
[BlackElo "2192"]
[PlyCount "83"]
[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. e3 0-0 5. Bd3 Re8 6. Nge2 d5 7. 0-0 c6 8. Bd2 Bf8 9. Qc2 Nbd7 10. e4 dxe4 11. Nxe4 Nxe4 12. Bxe4 Nf6 13. Bf3 e5 14. dxe5 Rxe5 15. Bc3 Re8 16. Rad1 Nd7 17. Ng3 Qc7 18. Rde1 Ne5 19. Be4 g6 20. f4 Ng4 21. Bxg6 Bc5+ 22. Kh1 Rxe1 23. Bxh7+ Kf8 24. Bxe1 Ne3 25. Qc3 Nxf1 26. Qh8+ Ke7 27. Nf5+ Kd7 28. Qf6 Ke8 29. Ng7+ Kf8 30. Bh4 Qd6 31. Ne6+ Ke8 32. Qh8+ Kd7 33. Qd8+ Kxe6 34. Qf6+ Kd7 35. Qxf7+ Qe7 36. Bxe7 Bxe7 37. f5 Kd8 38. f6 Bd6 39. c5 Bxc5 40. Qc4 b6 41. b4 Ne3 42. Qg8+ 1-0

[Event "Maastricht Limburg op 15th"]
[Site "Maastricht"]
[Date "2023.05.27"]
[Round "3"]
[White "De Boer, Bas"]
[Black "Fischer, Daniel1111"]
[Result "1/2-1/2"]
[ECO "E11"]
[WhiteElo "2192"]
[BlackElo "2383"]
[PlyCount "83"]
[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. Nf3 d5 4. g3 Bb4+ 5. Bd2 Be7 6. Bg2 0-0 7. Qc2 c6 8. 0-0 Nbd7 9. b3 b6 10. a4 Ba6 11. Rc1 h6 12. Na3 Ne4 13. Be1 Rc8 14. e3 Bd6 15. b4 Qe7 16. Qb2 Bb7 17. Ne5 Bb8 18. Nd3 Ba6 19. b5 Bb7 20. bxc6 Bxc6 21. cxd5 Bxd5 22. Nb4 Bb7 23. f3 Nef6 24. e4 e5 25. d5 Nc5 26. Nc4 Nfd7 27. a5 b5 28. Ne3 a6 29. Nf5 Qd8 30. Qa3 Kh7 31. Bd2 h5 32. Bh3 Qf6 33. Qe3 Rfe8 34. Kh1 Kg8 35. Rab1 g6 36. Nh6+ Kg7 37. g4 hxg4 38. Nxg4 Qh4 39. Nf2 Rh8 40. Kg1 Bd6 41. Qg5 Qxg5+ 42. Bxg5 1/2-1/2

[Event "Leiden Noteboom Memorial 82nd"]
[Site "Leiden"]
[Date "2023.02.25"]
[Round "3"]
[White "De Boer, Bas"]
[Black "Jonkman, Harmen"]
[Result "0-1"]
[ECO "E14"]
[WhiteElo "2195"]
[BlackElo "2328"]
[PlyCount "76"]
[EventDate "2023.02.24"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 d5 5. e3 0-0 6. a3 Be7 7. Bd3 b6 8. 0-0 Bb7 9. b3 Nbd7 10. Bb2 Ne4 11. Rc1 f5 12. b4 Rf6 13. cxd5 Nxd2 14. Nxd2 Bxd5 15. e4 fxe4 16. Nxe4 Rh6 17. g3 a5 18. Nc3 Bb7 19. b5 Nf6 20. Qe2 Qd7 21. Ne4 Nd5 22. Rce1 Rf8 23. Bc1 Rg6 24. f4 Bf6 25. Nxf6+ Rgxf6 26. Qc2 h5 27. Re5 Ne7 28. Bb2 Nf5 29. Qf2 Rg6 30. Rfe1 h4 31. Bxf5 Rxf5 32. Rxf5 exf5 33. Re5 hxg3 34. hxg3 Rh6 35. Qe3 Rh1+ 36. Kf2 Rh2+ 37. Ke1 Rxb2 38. Re8+ Kf7 0-1

[Event "Krakow op-A 33rd"]
[Site "Krakow"]
[Date "2023.01.04"]
[Round "9"]
[White "Ivanov, Mike"]
[Black "De Boer, Bas"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2319"]
[BlackElo "2182"]
[PlyCount "61"]
[EventDate "2022.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. Nc3 d5 2. e4 d4 3. Nce2 e5 4. Nf3 Bd6 5. Ng3 Nf6 6. Bb5+ c6 7. Bc4 0-0 8. d3 h6 9. 0-0 Re8 10. Nh4 b5 11. Bb3 Na6 12. Nhf5 Bf8 13. f4 exf4 14. Bxf4 Nc5 15. Bxf7+ Kxf7 16. e5 Bxf5 17. Nxf5 Nd5 18. Nxh6+ Kg6 19. Qg4+ Kh7 20. Nf7 Qd7 21. Qh5+ Kg8 22. Bg5 Nf6 23. Qh8+ Kxf7 24. exf6 Kg6 25. Qh4 Qd5 26. fxg7 Bxg7 27. Rf6+ Bxf6 28. Qh6+ Kf7 29. Qxf6+ Kg8 30. Qg6+ Kh8 31. Bf6# 1-0

[Event "Krakow op-A 33rd"]
[Site "Krakow"]
[Date "2023.01.03"]
[Round "8"]
[White "De Boer, Bas"]
[Black "Doraszelski, Alexander"]
[Result "1-0"]
[ECO "D45"]
[WhiteElo "2182"]
[BlackElo "2083"]
[PlyCount "107"]
[EventDate "2022.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. Nf3 d5 2. e3 Nf6 3. c4 e6 4. d4 c6 5. Qc2 Nbd7 6. b3 Bd6 7. Bb2 0-0 8. Bd3 b6 9. 0-0 Bb7 10. Nc3 Rc8 11. Rad1 Qe7 12. e4 dxe4 13. Nxe4 Nxe4 14. Bxe4 Nf6 15. Bd3 h6 16. Rfe1 Rfd8 17. Qc1 Qf8 18. Bb1 Bb4 19. Nd2 Be7 20. Qc2 g6 21. c5 Nd5 22. Nc4 Ba6 23. Ne5 Bf6 24. a3 Qg7 25. b4 Rc7 26. g3 h5 27. Ba2 Rdc8 28. Bc1 Bb5 29. Bd2 Ba6 30. h4 Bb5 31. Bb3 Kh7 32. Re4 Kg8 33. Qc1 bxc5 34. bxc5 Rb7 35. Bc2 Ne7 36. Bh6 Qh7 37. Bg5 Bxg5 38. Qxg5 Nf5 39. Qd2 f6 40. Nd3 Bc4 41. Nf4 Qf7 42. Rde1 Rd8 43. Qc3 Ba2 44. Ba4 Rbd7 45. Bxc6 Rxd4 46. Nxe6 Rxe4 47. Nxd8 Rxe1+ 48. Qxe1 Qc4 49. Nb7 Kg7 50. Bg2 g5 51. hxg5 h4 52. gxf6+ Kxf6 53. Nd6 Qxc5 54. Ne4+ 1-0

[Event "Krakow op-A 33rd"]
[Site "Krakow"]
[Date "2023.01.02"]
[Round "6"]
[White "De Boer, Bas"]
[Black "Hulka, Valentyn"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2182"]
[BlackElo "2222"]
[PlyCount "125"]
[EventDate "2022.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 a6 4. cxd5 exd5 5. Nf3 Nf6 6. Bg5 Be6 7. e3 Bd6 8. Bd3 Nbd7 9. 0-0 c6 10. Bf4 Qc7 11. Bxd6 Qxd6 12. h3 0-0 13. Qc2 Rfe8 14. Ne2 Ne4 15. Nf4 Bf5 16. b4 Qxb4 17. Rab1 Qd6 18. Rxb7 c5 19. Nh4 Bg6 20. Nhxg6 hxg6 21. Nxd5 Qxd5 22. Bxe4 Qxe4 23. Qxe4 Rxe4 24. Rxd7 cxd4 25. exd4 Re2 26. Rc1 Rb8 27. g3 Rxa2 28. Rcc7 Rf8 29. h4 a5 30. Ra7 Kh7 31. Rxf7 Rxf7 32. Rxf7 Rd2 33. Ra7 Rxd4 34. Rxa5 Rd3 35. Kg2 Rb3 36. f4 Rb2+ 37. Kh3 Rb3 38. Kg4 Rc3 39. h5 gxh5+ 40. Rxh5+ Kg6 41. Ra5 Rc6 42. Ra3 Kf6 43. Re3 Rc5 44. Kh4 Ra5 45. g4 g6 46. Rb3 Rc5 47. Rb6+ Kf7 48. Rb4 Kf6 49. Re4 Rc3 50. Re5 Rf3 51. g5+ Kf7 52. Kg4 Ra3 53. Rb5 Rc3 54. Rb7+ Kg8 55. Rb2 Kf7 56. Rf2 Rd3 57. Rf3 Rd1 58. Ra3 Rd4 59. Kf3 Rb4 60. Ke3 Ke6 61. Ra6+ Kf5 62. Rf6+ Kg4 63. Rxg6 1/2-1/2

[Event "Krakow op-A 33rd"]
[Site "Krakow"]
[Date "2023.01.02"]
[Round "7"]
[White "Lisowski, Krzysztof"]
[Black "De Boer, Bas"]
[Result "1/2-1/2"]
[ECO "C24"]
[WhiteElo "2136"]
[BlackElo "2182"]
[PlyCount "92"]
[EventDate "2022.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. d3 c6 4. Nf3 d5 5. Bb3 a5 6. a4 Bb4+ 7. Bd2 0-0 8. 0-0 Re8 9. Re1 Nbd7 10. c3 Bd6 11. Bg5 h6 12. Bh4 dxe4 13. dxe4 Nc5 14. Bc2 Be6 15. Bxf6 gxf6 16. Nh4 Kh7 17. Nd2 Rg8 18. Nf1 Bf8 19. Qe2 Qb6 20. b3 Bg4 21. Qe3 Qc7 22. Ng3 Ne6 23. Ngf5 Rg5 24. Reb1 Bc5 25. Qc1 Nf4 26. Qe1 Nh3+ 27. gxh3 Bxf5+ 28. Kh1 Bxh3 29. b4 axb4 30. cxb4 Bd4 31. Ra3 Qd7 32. Rbb3 Be6 33. Rg3 Rag8 34. Nf5 Bxf5 35. exf5 Rxg3 36. Rxg3 Qd5+ 37. Qe4 Qxe4+ 38. Bxe4 Bxf2 39. Rxg8 Kxg8 40. Kg2 Be1 41. b5 cxb5 42. axb5 b6 43. Kf3 Kf8 44. Bd5 Ke7 45. Ke4 h5 46. h3 h4 1/2-1/2

[Event "Krakow op-A 33rd"]
[Site "Krakow"]
[Date "2022.12.31"]
[Round "5"]
[White "Pasti, Aron"]
[Black "De Boer, Bas"]
[Result "1/2-1/2"]
[ECO "B68"]
[WhiteElo "2374"]
[BlackElo "2182"]
[PlyCount "117"]
[EventDate "2022.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 Bd7 7. Qd2 a6 8. 0-0-0 e6 9. f4 Be7 10. Nf3 b5 11. a3 b4 12. axb4 Nxb4 13. Bc4 Rc8 14. Bb3 h6 15. Bxf6 gxf6 16. f5 e5 17. Nd5 Nxd5 18. Qxd5 Rh7 19. Qd2 Rc5 20. Kb1 Bc6 21. Qe3 Qa8 22. Nd2 a5 23. Nc4 Qb8 24. Qf3 a4 25. Ba2 Kf8 26. g4 Qb7 27. Rhe1 d5 28. exd5 Bxd5 29. Qd3 Rb5 30. Ka1 Bxc4 31. Qxc4 Rxb2 32. Qxa4 Rb4 33. Qd7 Qxd7 34. Rxd7 h5 35. c3 Rb8 36. g5 fxg5 37. Rxe5 Bf6 38. Rc5 Ke8 39. Ra7 Be7 40. Rcc7 f6 41. Bc4 g4 42. Be2 Rg7 43. c4 Kf8 44. c5 Bxc5 45. Rxg7 Bd4+ 46. Ka2 Rb2+ 47. Ka3 Bxa7 48. Kxb2 Kxg7 49. Kc2 Kh6 50. Kd3 Kg5 51. Ke4 Bg1 52. h3 gxh3 53. Kf3 Kxf5 54. Kg3 h2 55. Kg2 h4 56. Bd3+ Kf4 57. Kh1 f5 58. Bxf5 Kxf5 59. Kg2 1/2-1/2

[Event "Krakow op-A 33rd"]
[Site "Krakow"]
[Date "2022.12.30"]
[Round "4"]
[White "De Boer, Bas"]
[Black "Fiedorek, Michal"]
[Result "0-1"]
[ECO "E71"]
[WhiteElo "2182"]
[BlackElo "2303"]
[PlyCount "54"]
[EventDate "2022.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 Nbd7 6. Be3 e5 7. d5 Nc5 8. f3 a5 9. Qd2 0-0 10. g4 c6 11. 0-0-0 cxd5 12. cxd5 Bd7 13. Kb1 Rb8 14. Bb5 Ne8 15. h4 Nc7 16. Bf1 b5 17. h5 b4 18. Nce2 Nb5 19. Rc1 a4 20. hxg6 fxg6 21. Ng3 Nc3+ 22. Rxc3 bxc3 23. Qxc3 Qb6 24. Qc2 a3 25. b3 Rfc8 26. Qh2 Nxb3 27. Bxb6 Rc1# 0-1

[Event "Krakow op-A 33rd"]
[Site "Krakow"]
[Date "2022.12.29"]
[Round "3"]
[White "Pazderski, Ziemowit"]
[Black "De Boer, Bas"]
[Result "0-1"]
[ECO "D38"]
[WhiteElo "2235"]
[BlackElo "2182"]
[PlyCount "74"]
[EventDate "2022.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Nc3 Bb4 5. Bg5 h6 6. Bxf6 Qxf6 7. Qa4+ Nc6 8. a3 Bxc3+ 9. bxc3 0-0 10. e3 Qg6 11. Be2 Bd7 12. cxd5 exd5 13. Qb3 Rfd8 14. 0-0 Bh3 15. Ne1 Na5 16. Qb4 b6 17. Bd3 Bf5 18. Ba6 h5 19. Qe7 Rd7 20. Qh4 Re8 21. Qg3 Qc6 22. Nf3 b5 23. Ne5 Qxa6 24. Nxd7 Bxd7 25. Qxc7 Bc6 26. Rfb1 Nc4 27. Ra2 Qb6 28. Qf4 Qd8 29. Re1 Re4 30. Qf3 Qg5 31. h3 Bd7 32. Rb1 Nb6 33. Rc2 Re6 34. Re1 Rf6 35. Qe2 Bxh3 36. f4 Qg3 37. e4 Bxg2 0-1

[Event "Krakow op-A 33rd"]
[Site "Krakow"]
[Date "2022.12.28"]
[Round "2"]
[White "De Boer, Bas"]
[Black "Jarmula, Lukasz"]
[Result "0-1"]
[ECO "B00"]
[WhiteElo "2182"]
[BlackElo "2469"]
[PlyCount "88"]
[EventDate "2022.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. d4 b6 2. e4 Bb7 3. Bd3 d6 4. Nf3 Nd7 5. 0-0 e5 6. Nc3 Ngf6 7. Re1 g6 8. dxe5 dxe5 9. Bg5 Bg7 10. Qe2 0-0 11. Rad1 c6 12. Ba6 Qc8 13. Bxb7 Qxb7 14. Rd6 Nh5 15. Qc4 Rac8 16. a4 a6 17. Be3 Rfe8 18. Red1 b5 19. axb5 axb5 20. Qb3 Nf8 21. Na4 Qe7 22. Nc5 Nf4 23. R6d2 Rcd8 24. c3 h6 25. g3 N4e6 26. Nd3 Qc7 27. Nb4 Rxd2 28. Rxd2 Nd7 29. Qd1 Ndc5 30. Qc2 Rf8 31. Rd1 Kh7 32. Nh4 Bf6 33. Nf5 Bg5 34. Bxc5 Nxc5 35. Nh4 Bxh4 36. gxh4 Qe7 37. Nxc6 Qe6 38. b4 Qg4+ 39. Kf1 Nxe4 40. Nxe5 Qf5 41. Nd3 Rc8 42. Ne1 Rxc3 43. Qe2 Rh3 44. Rd4 Rxh2 0-1

[Event "Krakow op-A 33rd"]
[Site "Krakow"]
[Date "2022.12.27"]
[Round "1"]
[White "Lewicki, Miroslaw"]
[Black "De Boer, Bas"]
[Result "1-0"]
[ECO "C47"]
[WhiteElo "2336"]
[BlackElo "2182"]
[PlyCount "73"]
[EventDate "2022.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. g3 d5 5. exd5 Nxd5 6. Bg2 Nb6 7. 0-0 Bd6 8. d4 0-0 9. d5 Nb8 10. Re1 Re8 11. Nb5 h6 12. b3 e4 13. Nxd6 Qxd6 14. c4 Bg4 15. Qd4 Nc6 16. dxc6 exf3 17. Rxe8+ Rxe8 18. Qxd6 cxd6 19. h3 Bh5 20. Bh1 f5 21. cxb7 Rb8 22. Kh2 Rxb7 23. g4 fxg4 24. hxg4 Bxg4 25. Kg3 Bh5 26. Kh4 g6 27. Bxh6 Nd7 28. Rd1 Ne5 29. Bf4 Rf7 30. Kg3 g5 31. Bxg5 Rg7 32. Kh4 Be8 33. Bf6 Rg4+ 34. Kh3 Bd7 35. Kh2 Re4 36. Bxe5 Rxe5 37. Rxd6 1-0

[Event "Calvia Amateur op 19th"]
[Site "Calvia"]
[Date "2022.10.16"]
[Round "9"]
[White "Ventura Bolet, Alexandre"]
[Black "De Boer, Bas"]
[Result "0-1"]
[ECO "D45"]
[WhiteElo "2229"]
[BlackElo "2165"]
[PlyCount "66"]
[EventDate "2022.10.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. Nf3 d5 2. e3 Nf6 3. c4 e6 4. Nc3 c6 5. b3 Nbd7 6. Qc2 Bd6 7. Bb2 0-0 8. Be2 Qe7 9. d4 b6 10. 0-0 Bb7 11. e4 dxe4 12. Nxe4 Nxe4 13. Qxe4 f5 14. Qc2 c5 15. Rad1 Rad8 16. Rfe1 Be4 17. Qc1 cxd4 18. Nxd4 Rf6 19. g3 Rh6 20. Bf3 Bxf3 21. Nxf5 Qf8 22. Nxh6+ gxh6 23. Qe3 Nc5 24. Rd4 e5 25. Rh4 Ne4 26. Rf4 exf4 27. Qxf3 Ng5 28. Qg4 fxg3 29. hxg3 Qf3 30. Qh4 Bc5 31. Rf1 Bxf2+ 32. Kh2 Bxg3+ 33. Qxg3 Rd2+ 0-1

[Event "Calvia Amateur op 19th"]
[Site "Calvia"]
[Date "2022.10.15"]
[Round "8"]
[White "De Boer, Bas"]
[Black "Svensson, Mikael"]
[Result "1-0"]
[ECO "A40"]
[WhiteElo "2165"]
[BlackElo "2129"]
[PlyCount "47"]
[EventDate "2022.10.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. d4 e6 2. Bf4 f5 3. Nc3 Nf6 4. g4 fxg4 5. h3 Bb4 6. hxg4 Nd5 7. Bd2 Bxc3 8. bxc3 0-0 9. Nh3 Qe7 10. e4 Nf6 11. Bd3 e5 12. dxe5 Qxe5 13. f4 Qe7 14. Qe2 d5 15. e5 Nxg4 16. Ng5 h6 17. Nf3 Nc6 18. Rb1 a6 19. Qg2 Qf7 20. Ng5 Qd7 21. e6 Re8 22. Qxg4 hxg5 23. Bh7+ Kh8 24. Be4+ 1-0

[Event "Calvia Amateur op 19th"]
[Site "Calvia"]
[Date "2022.10.14"]
[Round "7"]
[White "Hrbolka, Ladislav"]
[Black "De Boer, Bas"]
[Result "0-1"]
[ECO "D38"]
[WhiteElo "2046"]
[BlackElo "2165"]
[PlyCount "62"]
[EventDate "2022.10.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Nc3 Bb4 5. Qa4+ Nc6 6. e3 0-0 7. Qc2 Re8 8. a3 Bf8 9. b4 e5 10. cxd5 Nxd4 11. Nxd4 exd4 12. Nd1 dxe3 13. Nxe3 Nxd5 14. Bd3 g6 15. 0-0 Nf4 16. Bc4 Bd6 17. g3 Nh3+ 18. Kg2 Ng5 19. Rd1 Qf6 20. f4 Bh3+ 21. Kh1 Qxa1 22. Bb2 Qxd1+ 23. Qxd1 Rxe3 24. Bd4 Re4 25. Bd5 Rae8 26. Bxe4 Nxe4 27. Kg1 c5 28. Qa4 b5 29. Qxb5 Rb8 30. Qc6 cxd4 31. Qxe4 Bc7 0-1

[Event "Calvia Amateur op 19th"]
[Site "Calvia"]
[Date "2022.10.13"]
[Round "6"]
[White "De Boer, Bas"]
[Black "Moore, Geoffrey R"]
[Result "1-0"]
[ECO "E71"]
[WhiteElo "2165"]
[BlackElo "1956"]
[PlyCount "73"]
[EventDate "2022.10.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 0-0 6. Be3 e5 7. d5 c5 8. g4 Na6 9. Nge2 Nc7 10. Ng3 a6 11. a4 Bd7 12. Bd3 Rb8 13. Qe2 b6 14. f3 Rb7 15. h4 Qb8 16. h5 b5 17. hxg6 fxg6 18. b3 bxa4 19. bxa4 Rb2 20. Bd2 a5 21. Qh2 Na6 22. g5 Ne8 23. Qxh7+ Kf7 24. Qh2 Qb3 25. Qe2 Nb4 26. 0-0 Nxd3 27. Qxd3 Qc2 28. Qxc2 Rxc2 29. Rf2 Rh8 30. Rb1 Nc7 31. Rb7 Rc8 32. Nf1 Bf8 33. Ne3 Rxd2 34. Rxd2 Be7 35. Kg2 Bd8 36. Nb5 Bxb5 37. cxb5 1-0

[Event "Calvia Amateur op 19th"]
[Site "Calvia"]
[Date "2022.10.12"]
[Round "5"]
[White "Hoffmann, Max"]
[Black "De Boer, Bas"]
[Result "1-0"]
[ECO "A09"]
[WhiteElo "2098"]
[BlackElo "2165"]
[PlyCount "91"]
[EventDate "2022.10.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 d4 3. g3 Nc6 4. Bg2 e5 5. d3 Nf6 6. 0-0 Bd6 7. Na3 0-0 8. Nc2 Re8 9. Rb1 a5 10. b3 h6 11. a3 Qe7 12. Qd2 Nd8 13. b4 axb4 14. axb4 c6 15. e3 dxe3 16. Nxe3 e4 17. Nh4 exd3 18. Nef5 Qf8 19. c5 Be5 20. f4 Bc7 21. Bb2 b6 22. Qc3 bxc5 23. b5 Re6 24. Qxd3 Rb8 25. Bh3 cxb5 26. Nxh6+ gxh6 27. Bxe6 Nxe6 28. Bxf6 c4 29. Qd1 Bb6+ 30. Kg2 Bb7+ 31. Kh3 Bc8 32. f5 Ng5+ 33. Kg4 Ne4 34. Be5 Rb7 35. Rxb5 Kh7 36. Qc2 Ng5 37. Qb1 Be3 38. Ng6 Qg8 39. Rxb7 Qxg6 40. Bf4 h5+ 41. Kh4 Bxf5 42. Qd1 Bg4 43. Qd5 Qc2 44. Rxf7+ Nxf7 45. Qxf7+ Kh8 46. Be5# 1-0

[Event "Calvia Amateur op 19th"]
[Site "Calvia"]
[Date "2022.10.11"]
[Round "4"]
[White "De Boer, Bas"]
[Black "Pla Almenar, Nel"]
[Result "1/2-1/2"]
[ECO "E01"]
[WhiteElo "2165"]
[BlackElo "2062"]
[PlyCount "129"]
[EventDate "2022.10.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c6 5. g3 Bd6 6. Bg2 Nbd7 7. 0-0 0-0 8. Nd2 Re8 9. e4 dxe4 10. Ndxe4 Bf8 11. Bf4 Nxe4 12. Bxe4 Nf6 13. Bg2 Bd6 14. Be5 Qc7 15. Qe2 Bd7 16. Rad1 Red8 17. Rfe1 Be8 18. h3 Rac8 19. Kh2 Nd7 20. Bxd6 Qxd6 21. Ne4 Qe7 22. d5 exd5 23. cxd5 cxd5 24. Rxd5 Nb6 25. Rxd8 Qxd8 26. Nc5 h6 27. Nxb7 Qf6 28. Rd1 Bd7 29. Nd6 Rc5 30. Ne4 Qe7 31. Qd2 Rc7 32. b3 f5 33. Nc3 Qc5 34. Nd5 Nxd5 35. Qxd5+ Qxd5 36. Bxd5+ Kh7 37. Kg2 Kg6 38. Rd2 Kf6 39. f4 g5 40. Kf2 gxf4 41. gxf4 Rc3 42. Bc4 Ke7 43. Bd3 Be6 44. Ke3 Rc1 45. Rg2 Kf6 46. Kd2 Rh1 47. Rg3 Ra1 48. Kc3 Rxa2 49. Rf3 Bd5 50. Re3 Rf2 51. Re5 Be6 52. Ra5 Rxf4 53. Rxa7 Rf3 54. b4 Rxh3 55. b5 f4 56. b6 Bd5 57. Kd4 Bc6 58. Rc7 Ba8 59. Bc4 Rh2 60. Rf7+ Kg5 61. Ke5 Rb2 62. Rg7+ Kh4 63. Kxf4 Rb4 64. Rg4+ Kh3 65. Kf5 1/2-1/2

[Event "Calvia Amateur op 19th"]
[Site "Calvia"]
[Date "2022.10.10"]
[Round "3"]
[White "De Boer, Bas"]
[Black "Moreno Garcia, Alfonso"]
[Result "1-0"]
[ECO "E73"]
[WhiteElo "2165"]
[BlackElo "1887"]
[PlyCount "69"]
[EventDate "2022.10.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ESP"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 0-0 6. Be3 c6 7. h4 h5 8. f3 e5 9. d5 a5 10. Qd2 c5 11. Nh3 Na6 12. Nf2 Nc7 13. a4 Bd7 14. 0-0-0 Kh7 15. g4 Nce8 16. Rdg1 Qb6 17. Qc2 Rc8 18. Bd1 Nc7 19. Ne2 Nce8 20. Ng3 Qd8 21. Bd2 Ra8 22. Qc3 hxg4 23. fxg4 Rh8 24. g5 Nh5 25. Nxh5 gxh5 26. Bxh5 Kg8 27. Bd1 Qe7 28. Ng4 Kf8 29. Ne3 b6 30. h5 Rg8 31. Nf5 Qd8 32. Qf3 Bxf5 33. Qxf5 Ra7 34. h6 Bh8 35. g6 1-0

[Event "Barcelona Sants op-A 23rd"]
[Site "Barcelona"]
[Date "2022.08.24"]
[Round "6"]
[White "Vila I Bague, Arnau"]
[Black "De Boer, Bas"]
[Result "0-1"]
[ECO "B92"]
[WhiteElo "1852"]
[BlackElo "2136"]
[PlyCount "96"]
[EventDate "2022.08.19"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "ESP"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. 0-0 0-0 9. Re1 Be6 10. Bf3 Qc7 11. a4 Rc8 12. a5 Nbd7 13. Nd2 b5 14. axb6 Nxb6 15. Nf1 a5 16. Ne3 a4 17. Ncd5 Nfxd5 18. exd5 Bd7 19. c3 f5 20. Nc2 Bf6 21. Na3 Ra5 22. Be3 e4 23. Bxb6 Qxb6 24. Be2 Rac5 25. Rb1 Be5 26. Kh1 Qd8 27. Bf1 Qf6 28. Nc2 Kh8 29. Ne3 g6 30. Ra1 h5 31. Be2 Kg7 32. f3 f4 33. Nf1 e3 34. Qd3 Qf7 35. Red1 Ra8 36. Qe4 Rb8 37. g4 hxg4 38. fxg4 Rxb2 39. Bf3 Bxc3 40. Rab1 a3 41. h4 a2 42. Rxb2 Bxb2 43. h5 a1Q 44. Rxa1 Bxa1 45. hxg6 Qf6 46. g5 Qxg5 47. Qb1 Be5 48. Qb7 Qh6+ 0-1

[Event "Dieren op"]
[Site "Dieren"]
[Date "2022.08.04"]
[Round "9"]
[White "De Boer, Bas"]
[Black "Achuthan, Dylan"]
[Result "1/2-1/2"]
[ECO "E60"]
[WhiteElo "2136"]
[BlackElo "1989"]
[PlyCount "42"]
[EventDate "2022.07.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. h4 Bg7 4. Nc3 d5 5. cxd5 Nxd5 6. h5 c5 7. e3 Nc6 8. Qb3 e6 9. hxg6 hxg6 10. Rxh8+ Bxh8 11. Nxd5 Qxd5 12. Qxd5 exd5 13. dxc5 Nb4 14. Kd2 Bf5 15. a3 Nc6 16. Bb5 Ke7 17. Bxc6 bxc6 18. Ne2 Rb8 19. Nd4 Bxd4 20. exd4 Rb3 21. Ke1 Rd3 1/2-1/2

[Event "Dieren op"]
[Site "Dieren"]
[Date "2022.08.03"]
[Round "8"]
[White "Kohler, Aran"]
[Black "De Boer, Bas"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "2121"]
[BlackElo "2136"]
[PlyCount "108"]
[EventDate "2022.07.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 c5 3. e3 cxd4 4. Bxb8 Qa5+ 5. c3 Rxb8 6. exd4 Nf6 7. Bd3 g6 8. Nd2 Bg7 9. Ngf3 0-0 10. Ne5 Qc7 11. g4 b5 12. h4 Nd7 13. Nxd7 Bxd7 14. Qf3 e5 15. dxe5 Qxe5+ 16. Kf1 b4 17. Re1 Qf6 18. Re3 Qxf3 19. Nxf3 bxc3 20. bxc3 Bxg4 21. Ne5 Bxe5 22. Rxe5 Rb2 23. Kg2 Rd2 24. Rxd5 Bf5 25. Rxf5 gxf5 26. Bxf5 Rxa2 27. Rc1 Ra5 28. Be4 Rc5 29. c4 Rd8 30. f3 f5 31. Bb7 Kg7 32. Kf2 Rd4 33. Bd5 Rxh4 34. Ke3 a5 35. f4 Rc7 36. Rg1+ Rg4 37. Ra1 Ra7 38. Ra4 h5 39. c5 Kf6 40. c6 Rgg7 41. Kd4 h4 42. Kc5 h3 43. Ra2 a4 44. Re2 Rge7 45. Rh2 a3 46. Kd6 Rh7 47. Re2 Kg6 48. Rh2 Rh8 49. c7 Rc8 50. Rxh3 Rcxc7 51. Ke5 Re7+ 52. Kd6 Red7+ 53. Ke6 Rxd5 54. Rg3+ Kh6 0-1

[Event "Dieren op"]
[Site "Dieren"]
[Date "2022.08.02"]
[Round "7"]
[White "De Boer, Bas"]
[Black "Vogel, Jaap"]
[Result "1/2-1/2"]
[ECO "E11"]
[WhiteElo "2136"]
[BlackElo "2147"]
[PlyCount "74"]
[EventDate "2022.07.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. d4 e6 2. c4 d5 3. Nf3 c6 4. g3 Bb4+ 5. Bd2 Be7 6. Qc2 Nf6 7. Bg2 Nbd7 8. 0-0 b6 9. Nc3 Ba6 10. cxd5 cxd5 11. Bf4 0-0 12. Qa4 Qc8 13. Rfc1 Qb7 14. e4 Rac8 15. Ne5 b5 16. Qd1 b4 17. exd5 exd5 18. Na4 Rxc1 19. Rxc1 Rc8 20. Nxd7 Qxd7 21. Nc5 Qb5 22. Bg5 Bxc5 23. dxc5 Rxc5 24. Rxc5 Qxc5 25. Bxf6 gxf6 26. Bxd5 Kf8 27. Be4 h6 28. h4 Bc8 29. Qd2 Kg7 30. Qc2 Qe7 31. Qe2 Qd6 32. Kg2 Be6 33. b3 Bd5 34. Qg4+ Kf8 35. Qc8+ Kg7 36. Qg4+ Kf8 37. Qc8+ Kg7 1/2-1/2

[Event "Dieren op"]
[Site "Dieren"]
[Date "2022.08.01"]
[Round "6"]
[White "Baselmans, Luuk"]
[Black "De Boer, Bas"]
[Result "1-0"]
[ECO "B51"]
[WhiteElo "2256"]
[BlackElo "2136"]
[PlyCount "125"]
[EventDate "2022.07.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. d4 cxd4 5. Qxd4 a6 6. Bxd7+ Bxd7 7. Nc3 e5 8. Qd3 Rc8 9. 0-0 h6 10. Rd1 Nf6 11. Nd2 Bg4 12. Re1 Qc7 13. Nf1 Be7 14. Ne3 Be6 15. a4 0-0 16. a5 Rfd8 17. Bd2 Bf8 18. Ra4 Qd7 19. Nc4 Qe8 20. Nb6 Nd7 21. Rb4 Rc5 22. Nbd5 Rdc8 23. Qg3 Kh8 24. Rxb7 f5 25. f4 fxe4 26. Ne3 d5 27. f5 Bf7 28. Ng4 R5c7 29. Rxc7 Rxc7 30. Rf1 Rc6 31. f6 Nxf6 32. Nxe5 Bd6 33. Nxf7+ Qxf7 34. Qh4 Bc5+ 35. Kh1 e3 36. Be1 Qg6 37. Nxd5 Nxd5 38. Qd8+ Kh7 39. Qxd5 Be7 40. Bc3 e2 41. Re1 Re6 42. g3 Qg4 43. Qd3+ Kh8 44. Kg2 Re4 45. Qxa6 Bc5 46. Qxh6+ Kg8 47. Qd2 Qe6 48. Qg5 Bf8 49. h3 Qc6 50. Kh2 Re6 51. Qg4 Re4 52. Qf3 Qe8 53. a6 Bc5 54. Bd2 Kh8 55. b4 Ba7 56. c3 Re6 57. Bf4 Qe7 58. Kg2 g6 59. Bg5 Qe8 60. Bf6+ Kg8 61. Bd4 Bxd4 62. cxd4 Qe7 63. b5 1-0

[Event "Dieren op"]
[Site "Dieren"]
[Date "2022.07.30"]
[Round "5"]
[White "De Boer, Bas"]
[Black "Albers, Sasa"]
[Result "1-0"]
[ECO "E34"]
[WhiteElo "2136"]
[BlackElo "2203"]
[PlyCount "145"]
[EventDate "2022.07.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. cxd5 Qxd5 6. e3 0-0 7. Nf3 b6 8. Nd2 Bxc3 9. bxc3 Bb7 10. f3 c5 11. e4 Qc6 12. dxc5 Qxc5 13. Nc4 Rd8 14. Ba3 Qg5 15. Qf2 Na6 16. e5 Nd5 17. h4 Qg6 18. Nd6 Qh5 19. Qd4 Nc5 20. g4 Qg6 21. Qd2 Rxd6 22. h5 Nf4 23. exd6 Qf6 24. Bxc5 bxc5 25. Rh2 Qe5+ 26. Kf2 Rd8 27. Kg1 Bxf3 28. Qe1 Qxd6 29. Rb1 Bxg4 30. Rd2 Nd5 31. c4 Bxh5 32. cxd5 exd5 33. Bg2 d4 34. Qh4 Bg6 35. Re1 f6 36. Bf1 Qd5 37. Rc1 Kh8 38. Bc4 Qd6 39. Qh2 Qe5 40. Rf1 Qe3+ 41. Qf2 Qc3 42. Bb5 Rd5 43. Qf4 h6 44. Rf3 d3 45. Bc4 Rg5+ 46. Kf2 Kh7 47. Bxd3 Qc1 48. Bxg6+ Rxg6 49. Rg3 Rxg3 50. Kxg3 Qe1+ 51. Kh2 Qe7 52. Qf5+ Kh8 53. Qd5 Qe1 54. Qd8+ Kh7 55. Qd3+ Kh8 56. Re2 Qh4+ 57. Qh3 Qf4+ 58. Qg3 Qa4 59. Rg2 Qd7 60. Qf4 Kh7 61. Rf2 Kh8 62. Rd2 Qe7 63. Qd6 Qe1 64. Kg2 Qe4+ 65. Kf2 Qb4 66. Qd8+ Kh7 67. Qd3+ Kh8 68. Re2 Qh4+ 69. Qg3 Qa4 70. Kg2 Kh7 71. Qd3+ Kh8 72. Qg6 Qc6+ 73. Kg1 1-0

[Event "Dieren op"]
[Site "Dieren"]
[Date "2022.07.29"]
[Round "4"]
[White "Roorda, Thijs"]
[Black "De Boer, Bas"]
[Result "1/2-1/2"]
[ECO "D46"]
[WhiteElo "2113"]
[BlackElo "2136"]
[PlyCount "43"]
[EventDate "2022.07.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. Nf3 d5 2. e3 Nf6 3. c4 c6 4. d4 e6 5. Nbd2 Nbd7 6. Bd3 Be7 7. 0-0 0-0 8. e4 dxe4 9. Nxe4 h6 10. Qe2 Re8 11. b3 c5 12. Bb2 Nxe4 13. Bxe4 cxd4 14. Nxd4 Nf6 15. Rad1 Nxe4 16. Nc6 Qc7 17. Nxe7+ Rxe7 18. Qxe4 e5 19. h3 f6 20. Ba3 Re8 21. Bd6 Qf7 22. Rfe1 1/2-1/2

[Event "Dieren op"]
[Site "Dieren"]
[Date "2022.07.28"]
[Round "3"]
[White "De Boer, Bas"]
[Black "Pijkeren, Jan"]
[Result "0-1"]
[ECO "A57"]
[WhiteElo "2136"]
[BlackElo "2196"]
[PlyCount "126"]
[EventDate "2022.07.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. b6 e6 6. Nc3 Nxd5 7. Nxd5 exd5 8. Qxd5 Nc6 9. e4 Be7 10. Bc4 0-0 11. Nf3 Rb8 12. 0-0 Rxb6 13. Qh5 d6 14. b3 Bf6 15. Ng5 Bxg5 16. Bxg5 Qe8 17. Rad1 Ne5 18. Be2 f6 19. Qxe8 Rxe8 20. Bd2 Kf8 21. Ba5 Rc6 22. Rd2 Bg4 23. f3 Bh5 24. Rfd1 Ke7 25. Bc3 Rd8 26. Kf2 g5 27. h4 h6 28. Rh1 Bg6 29. hxg5 hxg5 30. g3 g4 31. f4 Bxe4 32. Rh6 Nd7 33. Bxg4 d5 34. Re2 Kf7 35. f5 Rg8 36. Bh5+ Kg7 37. Rg6+ Kf8 38. g4 Rxg6 39. Bxg6 Ne5 40. Bh5 Nf3 41. Kg3 Kg7 42. Kf4 Rd6 43. Kg3 Rd8 44. Ba5 Rc8 45. Rf2 Nd4 46. Bg6 c4 47. bxc4 dxc4 48. Rd2 Bd3 49. g5 Nb5 50. a4 Nd6 51. gxf6+ Kxf6 52. Kf4 Ke7 53. Bb4 Kd7 54. Ke5 Ne4 55. Rh2 Ng5 56. Kf4 Ne4 57. Bf7 Rb8 58. Be6+ Kc6 59. Be1 Rb1 60. Rh6 Kc5 61. Ba5 Kd4 62. Rh8 Rf1+ 63. Kg4 Be2+ 0-1

[Event "Dieren op"]
[Site "Dieren"]
[Date "2022.07.27"]
[Round "2"]
[White "Saketh, Pedagandham"]
[Black "De Boer, Bas"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "1928"]
[BlackElo "2136"]
[PlyCount "46"]
[EventDate "2022.07.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Nf3 d6 6. cxd4 Nc6 7. Bc4 Nb6 8. Bb5 dxe5 9. Nxe5 Bd7 10. Nxd7 Qxd7 11. 0-0 e6 12. Nc3 Rd8 13. Bg5 Be7 14. Bxe7 Qxe7 15. Qf3 0-0 16. Bxc6 bxc6 17. Qxc6 Rxd4 18. Rad1 Rc4 19. Qd6 Qb7 20. Rd4 Rcc8 21. Qb4 Qb8 22. Rfd1 Qe5 23. g3 g6 1/2-1/2

[Event "Dieren op"]
[Site "Dieren"]
[Date "2022.07.26"]
[Round "1"]
[White "De Boer, Bas"]
[Black "Elgersma, Onno"]
[Result "0-1"]
[ECO "D48"]
[WhiteElo "2136"]
[BlackElo "2316"]
[PlyCount "56"]
[EventDate "2022.07.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 a6 5. e3 dxc4 6. Bxc4 b5 7. Bd3 Bb7 8. 0-0 c5 9. b3 Nbd7 10. Bb2 Be7 11. Qe2 0-0 12. Rfd1 Qb8 13. a4 b4 14. Nb1 cxd4 15. Nxd4 Ne5 16. Bc2 Rc8 17. f4 Ng6 18. Bd3 Bc5 19. Nd2 Nd5 20. Bxg6 hxg6 21. Nc4 Qc7 22. Rac1 Rab8 23. Ne5 Qe7 24. Rd2 g5 25. Rxc5 Rxc5 26. f5 Nc3 27. Bxc3 bxc3 28. fxe6 Rxe5 0-1

[Event "Maastricht Limburg op 14th"]
[Site "Maastricht"]
[Date "2022.06.06"]
[Round "6"]
[White "De Boer, Bas"]
[Black "Van Meegen, Ruud"]
[Result "0-1"]
[ECO "E35"]
[WhiteElo "2115"]
[BlackElo "2285"]
[PlyCount "30"]
[EventDate "2022.06.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. cxd5 exd5 6. Bg5 c6 7. e3 a5 8. Bd3 Be7 9. Nge2 Na6 10. a3 Nc7 11. f3 Ne6 12. Bh4 h6 13. Rd1 0-0 14. Bf2 b5 15. Ng3 Re8 0-1

[Event "Maastricht Limburg op 14th"]
[Site "Maastricht"]
[Date "2022.06.05"]
[Round "5"]
[White "Suvorov, Alexander David"]
[Black "De Boer, Bas"]
[Result "1/2-1/2"]
[ECO "D32"]
[WhiteElo "2348"]
[BlackElo "2115"]
[PlyCount "34"]
[EventDate "2022.06.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 a6 4. cxd5 exd5 5. Bf4 Nf6 6. e3 c5 7. dxc5 Bxc5 8. Nf3 Nc6 9. Be2 0-0 10. 0-0 d4 11. exd4 Nxd4 12. Nxd4 Bxd4 13. Bf3 Qb6 14. Qb3 Qxb3 15. axb3 Bg4 16. Bxb7 Ra7 17. Bc6 Rc8 1/2-1/2

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2021.12.30"]
[Round "7"]
[White "De Boer, Bas"]
[Black "Heinrich, John"]
[Result "1-0"]
[ECO "E39"]
[WhiteElo "2148"]
[BlackElo "2022"]
[PlyCount "145"]
[EventDate "2021.12.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 0-0 6. Nf3 Na6 7. g3 Nxc5 8. Bg2 Nce4 9. 0-0 Nxc3 10. bxc3 Be7 11. e4 d6 12. e5 dxe5 13. Nxe5 Qc7 14. Qe2 Bd6 15. Re1 Nd7 16. Bf4 Rb8 17. Rab1 Nxe5 18. Bxe5 b6 19. Bxd6 Qxd6 20. Red1 Qc7 21. Qd3 Ba6 22. Qd7 Rbc8 23. c5 Qxc5 24. Qxa7 Bc4 25. a4 Rb8 26. Rd7 Qe5 27. Rd4 Rfc8 28. Bb7 Rc5 29. Qxb6 g6 30. Rd8+ Rxd8 31. Qxd8+ Kg7 32. Qd4 Kf6 33. Rb4 Ba2 34. Qxe5+ Kxe5 35. Rb5 Rxb5 36. axb5 Kd6 37. Bg2 Kc5 38. Bf1 e5 39. f3 f5 40. c4 Bb1 41. Kf2 g5 42. f4 gxf4 43. gxf4 e4 44. Ke3 Bc2 45. Bh3 Bd3 46. Bxf5 Bxc4 47. Bxh7 Bxb5 48. Bg6 Kd6 49. h4 Ke7 50. Kxe4 Kf6 51. h5 Bd7 52. Kf3 Kg7 53. Kg3 Kh6 54. Kh4 Be6 55. Be4 Bf7 56. Bf3 Be6 57. Bg4 Bf7 58. f5 Bd5 59. f6 Bf7 60. Bh3 Bxh5 61. Bf5 Bg6 62. Kg4 Bh5+ 63. Kf4 Bf7 64. Be4 Bh5 65. Ke5 Kg5 66. Ke6 Be8 67. Ke7 Bh5 68. Bh7 Be8 69. Bg8 Bg6 70. Bf7 Be4 71. Be8 Bd5 72. Bd7 Kg6 73. Be6 1-0

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2021.12.29"]
[Round "6"]
[White "Cofman, Veaceslav"]
[Black "De Boer, Bas"]
[Result "1-0"]
[ECO "D30"]
[WhiteElo "2283"]
[BlackElo "2148"]
[PlyCount "65"]
[EventDate "2021.12.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 a6 4. g3 dxc4 5. Bg2 b5 6. Ne5 c6 7. Nxc6 Qb6 8. Nxb8 Rxb8 9. 0-0 Bb7 10. e4 Nf6 11. Re1 Bb4 12. Nc3 0-0 13. a3 Ba5 14. Bg5 Rbd8 15. Bxf6 gxf6 16. d5 Bxc3 17. bxc3 Kh8 18. Qh5 f5 19. Qh6 Qd6 20. Qf6+ Kg8 21. e5 Qd7 22. d6 Bxg2 23. Kxg2 Rb8 24. Rad1 Qd8 25. Qh6 f6 26. Rd4 Rb7 27. Kg1 Rg7 28. d7 Rg6 29. Qd2 fxe5 30. Rxe5 f4 31. Rc5 fxg3 32. hxg3 Qf6 33. Rf4 1-0

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2021.12.29"]
[Round "5"]
[White "De Boer, Bas"]
[Black "Lu, Yunong Elias"]
[Result "1-0"]
[ECO "E01"]
[WhiteElo "2148"]
[BlackElo "1600"]
[PlyCount "120"]
[EventDate "2021.12.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. g3 c6 4. c4 e6 5. Bg2 Bd6 6. 0-0 0-0 7. Nfd2 e5 8. cxd5 Nxd5 9. Nc4 exd4 10. Nxd6 Qxd6 11. Qxd4 Rd8 12. Rd1 f5 13. Nc3 Be6 14. Bg5 Rd7 15. e4 fxe4 16. Nxe4 Qb4 17. Nc5 Qxd4 18. Rxd4 Bf7 19. Nxd7 Nxd7 20. Re1 N7b6 21. Bh3 h6 22. Bc1 a5 23. Be6 Bxe6 24. Rxe6 Kf7 25. Re5 Nd7 26. Rexd5 cxd5 27. Rxd5 Nf6 28. Rb5 Rd8 29. Rxb7+ Ke6 30. Be3 g5 31. Rb6+ Ke5 32. Rb5+ Ke4 33. Rxa5 Ng4 34. Ra3 Rc8 35. Rc3 Ra8 36. a3 Ne5 37. Kg2 Kd5 38. b4 Nc4 39. b5 Nxa3 40. Rc5+ Kd6 41. Rc6+ Kd5 42. Rxh6 Nxb5 43. Rh5 Ke6 44. Rxg5 Nd6 45. h4 Ne4 46. Rg6+ Kf7 47. h5 Nf6 48. Rg5 Nh7 49. Rb5 Ra6 50. Rb7+ Kg8 51. Bd4 Nf6 52. Bxf6 Rxf6 53. g4 Rd6 54. Kg3 Rd3+ 55. f3 Rd1 56. f4 Rg1+ 57. Kh4 Rc1 58. Kg5 Rc5+ 59. f5 Rc6 60. f6 Rxf6 1-0

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2021.12.28"]
[Round "3"]
[White "De Boer, Bas"]
[Black "Colbow, Collin"]
[Result "0-1"]
[ECO "E32"]
[WhiteElo "2148"]
[BlackElo "2322"]
[PlyCount "44"]
[EventDate "2021.12.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 0-0 5. e4 d6 6. Bd2 c5 7. d5 exd5 8. exd5 Re8+ 9. Be2 Bxc3 10. Bxc3 Ne4 11. Kf1 Nxc3 12. bxc3 Qf6 13. Bd3 g6 14. Rb1 Nd7 15. Nf3 b6 16. h4 h5 17. Kg1 Ne5 18. Nxe5 Rxe5 19. a4 Bd7 20. g3 Rae8 21. Kg2 Bg4 22. Rh2 Re2 0-1

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2021.12.28"]
[Round "4"]
[White "Schiller, Jan Hendrik"]
[Black "De Boer, Bas"]
[Result "0-1"]
[ECO "A12"]
[WhiteElo "1871"]
[BlackElo "2148"]
[PlyCount "68"]
[EventDate "2021.12.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 c6 3. Bg2 Nf6 4. 0-0 Bf5 5. c4 e6 6. b3 h6 7. Bb2 Be7 8. d3 0-0 9. Nbd2 Bh7 10. Rc1 a5 11. a3 Na6 12. Rc2 c5 13. Ne5 Rb8 14. cxd5 exd5 15. Qa1 d4 16. Rd1 Nd5 17. Qa2 Nac7 18. Ne4 Nb5 19. Rdc1 Bf5 20. Qa1 f6 21. Nc4 b6 22. Ned6 Nxd6 23. Bxd5+ Kh8 24. Nxd6 Bxd6 25. Bf3 Be6 26. b4 Bb3 27. Rd2 cxb4 28. Bxd4 bxa3 29. Qb1 a4 30. e3 b5 31. Bc5 a2 32. Qb2 Bxc5 33. Rxc5 Qa5 34. Rc1 a3 0-1

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2021.12.27"]
[Round "2"]
[White "De Boer, Bas"]
[Black "Meschke, Oliver"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "2148"]
[BlackElo "1867"]
[PlyCount "69"]
[EventDate "2021.12.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. Nf3 f5 2. d3 d5 3. d4 Nf6 4. Bf4 e6 5. e3 c6 6. Bd3 Nbd7 7. 0-0 Be7 8. c4 0-0 9. Nc3 Ne4 10. Ne5 Nxe5 11. Bxe5 Qe8 12. f3 Ng5 13. Qe2 Nf7 14. Bg3 Bf6 15. Bf2 Qd8 16. Rad1 Qb6 17. Bb1 dxc4 18. e4 Qa5 19. Qxc4 Bd7 20. Qb3 Qc7 21. Na4 b6 22. Qc2 Rac8 23. b3 Qb7 24. Nb2 Be7 25. Qe2 Rfe8 26. Bd3 Qb8 27. Qc2 g6 28. Rfe1 c5 29. d5 exd5 30. exf5 d4 31. fxg6 hxg6 32. Bxg6 Bf6 33. Bxf7+ Kxf7 34. Bg3 Qb7 35. Nc4 1-0

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2021.12.27"]
[Round "1"]
[White "Kieselbach, Marvin"]
[Black "De Boer, Bas"]
[Result "0-1"]
[ECO "D12"]
[WhiteElo "1569"]
[BlackElo "2148"]
[PlyCount "56"]
[EventDate "2021.12.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Bf5 3. e3 Nf6 4. c4 e6 5. Nc3 c6 6. Nh4 Bg4 7. Nf3 Nbd7 8. Be2 Bd6 9. 0-0 0-0 10. h3 Bxf3 11. Bxf3 dxc4 12. Qc2 h6 13. e4 e5 14. d5 cxd5 15. exd5 a6 16. a4 Rc8 17. Be3 Nc5 18. Bxc5 Rxc5 19. Rfe1 Re8 20. Ne4 Nxe4 21. Bxe4 Rc7 22. Re3 Bc5 23. Rg3 Qd6 24. Qe2 Rf8 25. Qg4 g6 26. h4 Kh8 27. Bf3 e4 28. Qxe4 Qxg3 0-1

[Event "Spilimbergo op 19th"]
[Site "Spilimbergo"]
[Date "2021.08.09"]
[Round "1"]
[White "De Boer, Bas"]
[Black "Sonis, Francesco"]
[Result "0-1"]
[ECO "A17"]
[WhiteElo "2163"]
[BlackElo "2508"]
[PlyCount "74"]
[EventDate "2021.08.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. Nf3 d5 2. e3 Nf6 3. c4 e6 4. Nc3 b6 5. b3 Bb7 6. Bb2 Nbd7 7. cxd5 exd5 8. Be2 a6 9. 0-0 g6 10. Rc1 Bd6 11. Rc2 0-0 12. d3 Re8 13. h3 Qe7 14. Qa1 Ne5 15. Nb1 Nxf3+ 16. Bxf3 Nd7 17. d4 Nf6 18. Nd2 c6 19. a3 a5 20. Rfc1 h5 21. Re1 Qe6 22. e4 dxe4 23. d5 Qxd5 24. Be2 Nd7 25. Nc4 Bc7 26. Rd1 Qe6 27. Rcd2 e3 28. fxe3 Re7 29. Rd6 Bxd6 30. Rxd6 Qf5 31. Bd3 Qg5 32. Bh8 Qh6 33. Bd4 c5 34. Rxd7 Rxd7 35. Nxb6 Rxd4 36. exd4 Qe3+ 37. Kh2 h4 0-1

[Event "Belgrade Serbia op"]
[Site "Belgrade"]
[Date "2021.07.08"]
[Round "9"]
[White "Dev, Shah"]
[Black "De Boer, Bas"]
[Result "1-0"]
[ECO "D36"]
[WhiteElo "2270"]
[BlackElo "2143"]
[PlyCount "75"]
[EventDate "2021.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SRB"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 Nbd7 6. cxd5 exd5 7. e3 Bd6 8. Bd3 0-0 9. Qc2 h6 10. Bh4 Re8 11. 0-0 Nf8 12. Rae1 Be6 13. Ne5 a6 14. f4 Be7 15. Kh1 Rc8 16. Qd1 Rc7 17. Qf3 b5 18. f5 Bc8 19. g4 N6h7 20. Bg3 Ng5 21. Qg2 b4 22. Na4 Bd6 23. Rc1 Bb7 24. h4 Ne4 25. Bxe4 dxe4 26. Qh2 Qb8 27. Nc5 Rcc8 28. f6 g6 29. Kg1 Ba8 30. Nxe4 Bc7 31. Bf4 Ne6 32. Nc5 Nxf4 33. exf4 Qb5 34. h5 g5 35. fxg5 Bd6 36. g6 Bxe5 37. gxf7+ Kxf7 38. Qc2 1-0

[Event "Belgrade Serbia op"]
[Site "Belgrade"]
[Date "2021.07.07"]
[Round "8"]
[White "De Boer, Bas"]
[Black "Meier, Volker"]
[Result "1/2-1/2"]
[ECO "D75"]
[WhiteElo "2143"]
[BlackElo "2285"]
[PlyCount "75"]
[EventDate "2021.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SRB"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 d5 5. cxd5 Nxd5 6. Nf3 0-0 7. 0-0 c5 8. e4 Nb6 9. d5 e6 10. dxe6 Bxe6 11. Qc2 Na6 12. a3 Rc8 13. Bg5 Qe8 14. Nc3 f6 15. Bf4 g5 16. Bd6 Rf7 17. e5 g4 18. Nh4 fxe5 19. Ne4 h6 20. f3 Nc4 21. Rfe1 Rd7 22. Rad1 Rc6 23. Nf5 Bxf5 24. Qxc4+ Kh8 25. fxg4 Bxe4 26. Bxe5 Bxe5 27. Rxd7 Qxd7 28. Rxe4 Bd4+ 29. Kh1 Rf6 30. Qe2 Qg7 31. Re8+ Rf8 32. Re7 Qg6 33. Be4 Qg8 34. Rh7+ Qxh7 35. Bxh7 Kxh7 36. Qe4+ Kh8 37. Qxb7 Nb8 38. b3 1/2-1/2

[Event "Belgrade Serbia op"]
[Site "Belgrade"]
[Date "2021.07.06"]
[Round "7"]
[White "Bodiroga, Predrag"]
[Black "De Boer, Bas"]
[Result "1-0"]
[ECO "D45"]
[WhiteElo "2316"]
[BlackElo "2143"]
[PlyCount "87"]
[EventDate "2021.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SRB"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. c4 c6 2. Nc3 d5 3. e3 Nf6 4. d4 e6 5. b3 Nbd7 6. Bb2 Bd6 7. Nf3 0-0 8. Be2 e5 9. dxe5 Nxe5 10. cxd5 cxd5 11. 0-0 Ng6 12. Rc1 a6 13. Qd4 Be6 14. Na4 b5 15. Nc5 Qe7 16. b4 Bg4 17. Nd3 Rfc8 18. h3 Rc4 19. Rxc4 dxc4 20. hxg4 cxd3 21. Qxd3 Nxg4 22. Qf5 Nh6 23. Qh5 Rc8 24. Bd3 Bxb4 25. g4 Rc5 26. g5 Nf5 27. Bxf5 Rxf5 28. Qg4 Rd5 29. Rc1 Nf8 30. Rc8 Ba5 31. Bd4 Qd7 32. Qxd7 Rxd7 33. Ra8 Rd8 34. Rxa6 Bc7 35. Ne5 Bxe5 36. Bxe5 Ne6 37. f4 h6 38. g6 Re8 39. gxf7+ Kxf7 40. Ra5 Re7 41. Rxb5 Ra7 42. Rb2 g5 43. f5 Nd8 44. Bd4 1-0

[Event "Belgrade Serbia op"]
[Site "Belgrade"]
[Date "2021.07.06"]
[Round "6"]
[White "De Boer, Bas"]
[Black "Klasan, Vladimir"]
[Result "1-0"]
[ECO "D76"]
[WhiteElo "2143"]
[BlackElo "2297"]
[PlyCount "81"]
[EventDate "2021.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SRB"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 0-0 5. Bg2 d5 6. cxd5 Nxd5 7. 0-0 Nb6 8. d4 Nc6 9. e3 e5 10. d5 Na5 11. Nd2 Nac4 12. Nxc4 Nxc4 13. b3 Nd6 14. Ba3 Re8 15. Rc1 Bd7 16. Qd2 f5 17. Rc2 Rc8 18. Rfc1 e4 19. Ne2 Nf7 20. Nd4 Ne5 21. Bf1 a6 22. Bb2 Bb5 23. Bxb5 axb5 24. Qa5 Nd3 25. Rxc7 Rxc7 26. Rxc7 Be5 27. d6 Nxb2 28. Qxb5 Bxd6 29. Rd7 Qf6 30. Qd5+ Kh8 31. Rxd6 Re5 32. Rd8+ Kg7 33. Qxb7+ Re7 34. Rd7 Rxd7 35. Qxd7+ Kh6 36. Qe6 Qf8 37. a4 Nd3 38. h4 Qc5 39. Qf6 Qa5 40. b4 Nxb4 41. Ne6 1-0

[Event "Belgrade Serbia op"]
[Site "Belgrade"]
[Date "2021.07.05"]
[Round "5"]
[White "Ristic, Luka"]
[Black "De Boer, Bas"]
[Result "1/2-1/2"]
[ECO "B13"]
[WhiteElo "2300"]
[BlackElo "2143"]
[PlyCount "105"]
[EventDate "2021.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SRB"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 c5 3. e3 cxd4 4. exd4 Nc6 5. c3 Bf5 6. Nd2 e6 7. Ngf3 Nge7 8. Nh4 Ng6 9. Nxg6 Bxg6 10. Nf3 Bd6 11. Bg3 0-0 12. Be2 Rb8 13. a4 h5 14. 0-0 Bxg3 15. hxg3 Qd6 16. Re1 Be4 17. a5 Bxf3 18. Bxf3 Qc7 19. Qa4 Ne7 20. Re5 g6 21. g4 Rfc8 22. Re3 Qd8 23. g3 Rc4 24. Qa3 Nc8 25. Kg2 Nd6 26. b3 Rc7 27. Rh1 Kg7 28. Qb2 Qf6 29. Be2 Rbc8 30. Rf3 Qg5 31. Re1 Ne4 32. c4 Qd2 33. Qa1 b6 34. a6 Qb4 35. Qc1 Qd2 36. Qa1 Qb4 37. Rd1 Nd2 38. Qc3 Qxc3 39. Rxc3 Ne4 40. Re3 Nf6 41. f3 Rd8 42. Kf2 Ng8 43. Rc3 dxc4 44. Rxc4 Rcd7 45. Rdc1 Nf6 46. Rc7 Nd5 47. Rxd7 Rxd7 48. Bb5 Rc7 49. Rc4 Rxc4 50. bxc4 Nc7 51. Ke3 Kf6 52. Kf4 g5+ 53. Ke4 1/2-1/2

[Event "Belgrade Serbia op"]
[Site "Belgrade"]
[Date "2021.07.04"]
[Round "4"]
[White "De Boer, Bas"]
[Black "Irizanin, Radoje"]
[Result "0-1"]
[ECO "D46"]
[WhiteElo "2143"]
[BlackElo "2330"]
[PlyCount "54"]
[EventDate "2021.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SRB"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 e6 5. e3 Nbd7 6. Qc2 Bd6 7. Bd3 0-0 8. 0-0 dxc4 9. Bxc4 b5 10. Be2 Bb7 11. Rd1 Qc7 12. e4 e5 13. Bg5 exd4 14. Rxd4 Ne5 15. g3 Bc5 16. Rd2 Nfg4 17. Kg2 Bxf2 18. Nxe5 Qxe5 19. Bf4 Ne3+ 20. Kxf2 Nxc2 21. Bxe5 Nxa1 22. Bd3 Rad8 23. Rd1 b4 24. Na4 Ba6 25. Nc5 Bxd3 26. Bc7 Rd4 27. Ke3 Nc2+ 0-1

[Event "Belgrade Serbia op"]
[Site "Belgrade"]
[Date "2021.07.03"]
[Round "3"]
[White "Pastar, Slaven"]
[Black "De Boer, Bas"]
[Result "1/2-1/2"]
[ECO "A01"]
[WhiteElo "2354"]
[BlackElo "2143"]
[PlyCount "254"]
[EventDate "2021.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SRB"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. b3 e5 2. Bb2 Nc6 3. Nf3 e4 4. Nd4 Nxd4 5. Bxd4 Nf6 6. c4 Be7 7. Nc3 c5 8. Bxf6 Bxf6 9. Qc2 Qe7 10. Nd5 Qe5 11. Nxf6+ gxf6 12. Rc1 b6 13. g3 Bb7 14. Bg2 d5 15. cxd5 Bxd5 16. 0-0 f5 17. e3 0-0 18. Rfd1 Rad8 19. Qc3 Qxc3 20. dxc3 Bb7 21. Kf1 Kg7 22. Ke1 Kf6 23. Bf1 Bc8 24. Rc2 Rxd1+ 25. Kxd1 Rd8+ 26. Kc1 Be6 27. Kb2 Ke7 28. b4 cxb4 29. cxb4 Rc8 30. Rxc8 Bxc8 31. Kc3 Kd6 32. Kd4 h6 33. a3 Ke6 34. Bc4+ Kf6 35. a4 Bd7 36. a5 Bc8 37. Bd5 Bd7 38. Bb3 Bc6 39. Ba2 Bd7 40. Bd5 Bc8 41. Bc6 Ke6 42. Bd5+ Kf6 43. Bb3 Bd7 44. Bd1 Be6 45. Be2 Ke7 46. Ke5 f6+ 47. Kd4 Kd6 48. Bh5 Bd7 49. Bf7 Bc8 50. Bg6 Be6 51. Bh5 Bd7 52. f4 exf3 53. Bxf3 Be6 54. Bg2 Ba2 55. Bh3 Bb1 56. Bf1 Ba2 57. axb6 axb6 58. Bh3 Bb1 59. Kc4 Be4 60. Kb5 Kc7 61. Bf1 Bb1 62. Kc4 Kd6 63. Kd4 Bc2 64. Bc4 Bb1 65. Bg8 Bc2 66. Bh7 Ba4 67. Bxf5 Bc6 68. Bd3 Bb7 69. Be4 Bc8 70. Bf3 Bf5 71. Bd5 Bc2 72. Bc4 Bg6 73. Ba6 Kc6 74. Bd3 Bf7 75. Bc2 Kb5 76. Kc3 Kc6 77. Bd3 Kd6 78. Kd4 Bd5 79. Be4 Bf7 80. Bh7 Bd5 81. Bg6 Bc6 82. Bf7 Bf3 83. Bg8 Bc6 84. Bb3 Bf3 85. Ba4 Bd5 86. Bd1 Bc6 87. Bg4 Bd5 88. Bf5 Bc6 89. Be4 Bd7 90. Bf3 Bf5 91. Kc4 Be6+ 92. Kd4 Bf5 93. Be2 Bg6 94. Bg4 Kc6 95. h3 Kb5 96. Kc3 Kc6 97. Kc4 Kd6 98. Bc8 Be4 99. Kd4 Bd5 100. Ba6 Bg2 101. Bc8 Kc6 102. Bf5 Kb5 103. Kc3 Kc6 104. Bc8 Kc7 105. Bf5 Kc6 106. Kc4 Kd6 107. Kd4 Bd5 108. h4 Bc6 109. Bh7 Bd5 110. Be4 Be6 111. Bc2 Bd5 112. Bd3 Bc6 113. Bc4 Bd7 114. Bd5 Bf5 115. Kc4 Bd7 116. Kd4 Bf5 117. Bf7 Kc6 118. e4 Bg4 119. e5 fxe5+ 120. Kxe5 Kb5 121. h5 Kxb4 122. Kf6 Kc3 123. Be8 Kd4 124. Kg6 Ke3 125. Kxh6 Kf2 126. Kg7 Bxh5 127. Bxh5 Kxg3 1/2-1/2

[Event "Belgrade Serbia op"]
[Site "Belgrade"]
[Date "2021.07.03"]
[Round "2"]
[White "Velickovic, Sasa"]
[Black "De Boer, Bas"]
[Result "0-1"]
[ECO "B35"]
[WhiteElo "2281"]
[BlackElo "2143"]
[PlyCount "69"]
[EventDate "2021.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SRB"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Nge2 g6 4. d4 cxd4 5. Nxd4 Bg7 6. Be3 Nf6 7. Bc4 0-0 8. Bb3 Ng4 9. Qxg4 Nxd4 10. Qd1 Ne6 11. Qd2 Re8 12. 0-0-0 d6 13. Bh6 Bh8 14. h4 b5 15. h5 a5 16. hxg6 hxg6 17. Be3 Bg7 18. Nxb5 a4 19. Bxe6 Bxe6 20. Bb6 Bh8 21. Be3 Bg7 22. Bd4 f6 23. a3 Rc8 24. Bc3 Bf7 25. Bb4 Rc4 26. Nc3 Qa8 27. Nd5 Qa7 28. f3 Rec8 29. c3 f5 30. exf5 Rd4 31. Qg5 Rxd5 32. Rxd5 Bxd5 33. fxg6 Bb3 34. Re1 Qf2 35. Qd2 0-1

[Event "Belgrade Serbia op"]
[Site "Belgrade"]
[Date "2021.07.02"]
[Round "1"]
[White "De Boer, Bas"]
[Black "Yankelevich, Lev"]
[Result "0-1"]
[ECO "E91"]
[WhiteElo "2143"]
[BlackElo "2389"]
[PlyCount "80"]
[EventDate "2021.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SRB"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 g6 4. Nc3 Bg7 5. Nf3 0-0 6. e4 d6 7. Be2 e6 8. 0-0 Re8 9. Nd2 Na6 10. h3 Nc7 11. Re1 a6 12. a4 e5 13. Nf1 Rf8 14. g4 h5 15. Bg5 hxg4 16. hxg4 Qd7 17. Ne3 Nh7 18. Bh4 Bh6 19. Qd3 Bg5 20. Bxg5 Nxg5 21. Kg2 Kg7 22. Rh1 Qe7 23. Rh2 Bd7 24. Rah1 Rh8 25. Rxh8 Rxh8 26. Rxh8 Kxh8 27. Qd1 Kg7 28. Qh1 Qe8 29. b3 b5 30. axb5 axb5 31. Bd3 b4 32. Ne2 Qd8 33. Ng3 Ne8 34. Qh4 Qf6 35. Kf1 Nf3 36. Qxf6+ Nxf6 37. Bc2 Nxg4 38. Bd1 Nxe3+ 39. fxe3 Nd2+ 40. Ke2 Nb1 0-1

[Event "Skalica Masters op"]
[Site "Skalica"]
[Date "2020.08.29"]
[Round "8"]
[White "Sarkozi, Szabolcs"]
[Black "De Boer, Bas"]
[Result "0-1"]
[ECO "B81"]
[WhiteElo "2046"]
[BlackElo "2145"]
[PlyCount "82"]
[EventDate "2020.08.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SVK"]
[SourceTitle "CBM 198 Extra"]
[Source "ChessBase"]
[SourceDate "2020.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.11.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3 e6 7. g4 h6 8. Bg2 g5 9. Be3 Nbd7 10. Qd2 Ne5 11. Qe2 Ng6 12. 0-0-0 Qc7 13. Kb1 Be7 14. Bc1 Bd7 15. Rhe1 Rc8 16. Nf3 Ne5 17. Nxe5 dxe5 18. h4 gxh4 19. g5 hxg5 20. Bxg5 Rg8 21. f4 Bc6 22. Bh3 exf4 23. Bxf6 Bxf6 24. e5 f3 25. Qc4 b5 26. Qb3 Bg5 27. Rd6 f2 28. Red1 Be7 29. Bxe6 Bxd6 30. exd6 Qxd6 31. Bxf7+ Kf8 32. Rxd6 f1Q+ 33. Rd1 Qxf7 34. Qb4+ Qe7 35. Qf4+ Ke8 36. Qf1 Rg5 37. Qh3 Rd8 38. Rc1 Re5 39. Qg4 Rd6 40. a4 Bd7 41. Qg1 Qg5 0-1

[Event "Skalica Masters op"]
[Site "Skalica"]
[Date "2020.08.28"]
[Round "7"]
[White "De Boer, Bas"]
[Black "Ihnat, Marek1111"]
[Result "0-1"]
[ECO "D76"]
[WhiteElo "2145"]
[BlackElo "2046"]
[PlyCount "90"]
[EventDate "2020.08.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SVK"]
[SourceTitle "CBM 198 Extra"]
[Source "ChessBase"]
[SourceDate "2020.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.11.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 d5 5. cxd5 Nxd5 6. Nf3 0-0 7. 0-0 Nb6 8. Nc3 Nc6 9. e3 Re8 10. Re1 a5 11. Qe2 e5 12. dxe5 Nxe5 13. Nxe5 Bxe5 14. e4 Be6 15. Bf4 Bxc3 16. bxc3 Nc4 17. Rab1 Rb8 18. h4 Qe7 19. Bg5 f6 20. Bc1 b6 21. h5 Qc5 22. hxg6 hxg6 23. a4 Bd7 24. Qa2 Kg7 25. Bf1 Ne5 26. Re3 Ng4 27. Rd3 Be6 28. Qd2 Qh5 29. f4 Rh8 30. Qg2 Qc5+ 31. Rd4 Qxc3 32. Qb2 Qxg3+ 33. Qg2 Qc3 34. Qd2 Qc5 35. Rb5 Qe7 36. f5 c5 37. Rd6 gxf5 38. Bc4 Bc8 39. Bb2 Qxe4 40. Bxf6+ Nxf6 41. Qg5+ Kh7 42. Qxf6 Qe1+ 43. Kg2 Bb7+ 44. Kh3 Qe3+ 45. Kh2 Qf2+ 0-1

[Event "Skalica Masters op"]
[Site "Skalica"]
[Date "2020.08.27"]
[Round "6"]
[White "Samoun, Florent"]
[Black "De Boer, Bas"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "2299"]
[BlackElo "2145"]
[PlyCount "53"]
[EventDate "2020.08.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SVK"]
[SourceTitle "CBM 198 Extra"]
[Source "ChessBase"]
[SourceDate "2020.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.11.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Bd6 7. 0-0 0-0 8. c4 c6 9. Qc2 Bf5 10. Nc3 Re8 11. Re1 Nxc3 12. Bxf5 Rxe1+ 13. Nxe1 Ne4 14. Bxe4 dxe4 15. Qxe4 Nd7 16. Nf3 Nf6 17. Qd3 h6 18. b3 Qa5 19. Bd2 Qa3 20. g3 Re8 21. Qc2 Ne4 22. Re1 f5 23. Nh4 Rf8 24. Bc1 Qa5 25. Re3 g5 26. Nxf5 Nxf2 27. Ne7+ 1-0

[Event "Skalica Masters op"]
[Site "Skalica"]
[Date "2020.08.26"]
[Round "5"]
[White "De Boer, Bas"]
[Black "Ratsma, Midas"]
[Result "1/2-1/2"]
[ECO "A32"]
[WhiteElo "2145"]
[BlackElo "2245"]
[PlyCount "66"]
[EventDate "2020.08.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SVK"]
[SourceTitle "CBM 198 Extra"]
[Source "ChessBase"]
[SourceDate "2020.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.11.30"]
[SourceQuality "1"]

1. Nf3 Nf6 2. d4 c5 3. c4 cxd4 4. Nxd4 a6 5. Nc3 e6 6. a3 d5 7. cxd5 Nxd5 8. Nxd5 Qxd5 9. e3 e5 10. Nf3 Qxd1+ 11. Kxd1 Nc6 12. Bd2 Be6 13. Bc3 Bb3+ 14. Ke1 f6 15. Rc1 Rc8 16. Nd2 Bd5 17. Nc4 Be4 18. f3 Bg6 19. Nb6 Rd8 20. Bc4 Bf7 21. Bxf7+ Kxf7 22. Ke2 Bc5 23. Na4 Ba7 24. Bd2 Rd5 25. Nc3 Rd7 26. Ne4 Rhd8 27. Rhd1 Ne7 28. Nc5 Rd5 29. Nxb7 Rb8 30. Na5 Rxb2 31. Nc4 Ra2 32. Ra1 Rxa1 33. Rxa1 Rc5 1/2-1/2

[Event "Skalica Masters op"]
[Site "Skalica"]
[Date "2020.08.25"]
[Round "4"]
[White "Czerw, Dawid"]
[Black "De Boer, Bas"]
[Result "1/2-1/2"]
[ECO "D12"]
[WhiteElo "2286"]
[BlackElo "2145"]
[PlyCount "81"]
[EventDate "2020.08.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SVK"]
[SourceTitle "CBM 198 Extra"]
[Source "ChessBase"]
[SourceDate "2020.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.11.30"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bf5 5. Nc3 e6 6. Nh4 Be4 7. f3 Bg6 8. Nxg6 hxg6 9. g3 Be7 10. Qb3 Qc7 11. Bd2 a6 12. Rc1 dxc4 13. Bxc4 c5 14. dxc5 Nc6 15. Na4 Rd8 16. Rc2 Rh5 17. Bf1 Nd7 18. Kf2 Nxc5 19. Nxc5 Rxc5 20. Be2 Rcd5 21. Bc3 Kf8 22. Rhc1 Qd7 23. Be1 e5 24. Bc4 Rd6 25. Bxf7 e4 26. f4 Rf6 27. Bc4 Ne5 28. Be2 Nd3+ 29. Bxd3 exd3 30. Rd2 g5 31. Kg1 gxf4 32. exf4 Rf5 33. Bf2 Rb5 34. Qc4 Bb4 35. Rcd1 Qd5 36. Qc7 Bxd2 37. Rxd2 Rd7 38. Qc8+ Kf7 39. Qc3 Qxa2 40. Bd4 Qb3 41. Bxg7 1/2-1/2

[Event "Skalica Masters op"]
[Site "Skalica"]
[Date "2020.08.24"]
[Round "3"]
[White "De Boer, Bas"]
[Black "Sosovickova, Jana"]
[Result "1-0"]
[ECO "A11"]
[WhiteElo "2145"]
[BlackElo "1829"]
[PlyCount "97"]
[EventDate "2020.08.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SVK"]
[SourceTitle "CBM 198 Extra"]
[Source "ChessBase"]
[SourceDate "2020.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.11.30"]
[SourceQuality "1"]

1. Nf3 d5 2. e3 e6 3. c4 c6 4. Qc2 f5 5. b3 Nf6 6. Bb2 Bd6 7. Be2 0-0 8. 0-0 Bd7 9. d3 Be8 10. Nbd2 Nbd7 11. e4 Ng4 12. h3 Nge5 13. Nd4 Qe7 14. Rae1 c5 15. Nb5 dxc4 16. Nxc4 Nxc4 17. dxc4 Bg6 18. Nxd6 Qxd6 19. Qc3 Rf7 20. exf5 exf5 21. Bf3 Nf6 22. Re5 Rc8 23. Rd1 Qc7 24. g4 fxg4 25. hxg4 Kh8 26. Qe3 b6 27. g5 Ng8 28. Bd5 Rd7 29. Re1 Rf8 30. Re6 Qf4 31. Rxg6 Qg4+ 32. Qg3 Qxg3+ 33. fxg3 hxg6 34. Kg2 Nf6 35. gxf6 gxf6 36. g4 g5 37. Kf3 Kg7 38. Rh1 Rd6 39. Rh5 Rh8 40. Rxg5+ Kf8 41. Rg6 Rh3+ 42. Kg2 Rd3 43. Rxf6+ Rxf6 44. Bxf6 Rd2+ 45. Kf3 Rxa2 46. g5 Rd2 47. g6 Rd3+ 48. Kf4 Rd4+ 49. Kf5 1-0

[Event "Skalica Masters op"]
[Site "Skalica"]
[Date "2020.08.24"]
[Round "2"]
[White "De Boer, Bas"]
[Black "Treybal, Dusan"]
[Result "1-0"]
[ECO "E63"]
[WhiteElo "2145"]
[BlackElo "1996"]
[PlyCount "57"]
[EventDate "2020.08.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SVK"]
[SourceTitle "CBM 198 Extra"]
[Source "ChessBase"]
[SourceDate "2020.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.11.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 0-0 5. Nc3 d6 6. Nf3 Nc6 7. 0-0 a6 8. h3 Rb8 9. e4 e5 10. d5 Na5 11. Qd3 c5 12. dxc6 bxc6 13. b3 Qc7 14. Rd1 Nb7 15. Be3 Be6 16. Rac1 Rbd8 17. Ng5 Bc8 18. Nf3 h6 19. Qe2 Be6 20. Nd5 cxd5 21. cxd5 Qd7 22. dxe6 fxe6 23. Nxe5 Qe8 24. Qxa6 dxe5 25. Qxb7 Rxd1+ 26. Rxd1 Rf7 27. Qb6 Rd7 28. Rxd7 Qxd7 29. a4 1-0

[Event "Skalica Masters op"]
[Site "Skalica"]
[Date "2020.08.23"]
[Round "1"]
[White "Koziak, Vitali"]
[Black "De Boer, Bas"]
[Result "1-0"]
[ECO "A11"]
[WhiteElo "2425"]
[BlackElo "2145"]
[PlyCount "71"]
[EventDate "2020.08.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SVK"]
[SourceTitle "CBM 198 Extra"]
[Source "ChessBase"]
[SourceDate "2020.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.11.30"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 c6 3. e3 Nf6 4. Qc2 g6 5. b3 Bg7 6. Bb2 0-0 7. Nc3 Re8 8. d4 Bf5 9. Bd3 Bxd3 10. Qxd3 Qa5 11. 0-0 Nbd7 12. cxd5 Nxd5 13. Nxd5 Qxd5 14. Rfd1 Rad8 15. e4 Qh5 16. Qe2 e6 17. Rac1 g5 18. h3 h6 19. Rd3 Nf8 20. Qf1 Qg6 21. Qe2 f6 22. Re1 Qf7 23. g3 Rd7 24. Nd2 Red8 25. Nc4 Ng6 26. Re3 Bf8 27. Qh5 Ne5 28. Qe2 Ng6 29. Ba1 Bb4 30. Rf1 Qg7 31. Rf3 Rf7 32. Ne3 Qf8 33. Qc4 Qd6 34. Ng4 Kg7 35. Rxf6 Rxf6 36. e5 1-0

[Event "Apeldoorn Lichess blitz Inv"]
[Site "Lichess.org INT"]
[Date "2020.06.27"]
[Round "2.1"]
[White "De Boer, Bas"]
[Black "Lahaye, Rick"]
[Result "1/2-1/2"]
[ECO "D11"]
[WhiteElo "2145"]
[BlackElo "2413"]
[PlyCount "76"]
[EventDate "2020.06.27"]
[EventType "k.o. (blitz)"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. g3 Bg4 5. Bg2 Nbd7 6. 0-0 e6 7. Nc3 Be7 8. Qb3 Qb6 9. Rd1 0-0 10. h3 Bh5 11. Bf4 Rfe8 12. Ne5 Nxe5 13. Bxe5 Nd7 14. Bf4 Bf6 15. cxd5 exd5 16. Qxb6 axb6 17. Rd2 b5 18. g4 Bg6 19. e3 h6 20. b3 Nc5 21. Rc1 b4 22. Nxd5 Nd3 23. Nxf6+ gxf6 24. Rc4 Ra6 25. Bg3 Rea8 26. e4 Ne1 27. Bh1 Rxa2 28. Rxa2 Rxa2 29. Rxb4 b5 30. d5 cxd5 31. exd5 Ra1 32. Kh2 Nd3 33. Rxb5 Ra2 34. Rb8+ Kg7 35. Kg1 Ra1+ 36. Kh2 Ra2 37. Kg1 Ra1+ 38. Kh2 Ra2 1/2-1/2

[Event "Apeldoorn Lichess blitz Inv"]
[Site "Lichess.org INT"]
[Date "2020.06.27"]
[Round "1.2"]
[White "De Boer, Bas"]
[Black "Pantus, Alec"]
[Result "1-0"]
[ECO "D24"]
[WhiteElo "2145"]
[PlyCount "79"]
[EventDate "2020.06.27"]
[EventType "k.o. (blitz)"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. Nf3 Bf5 4. Nc3 Nf6 5. e3 e6 6. Bxc4 Bb4 7. 0-0 Bxc3 8. bxc3 Bg4 9. Be2 Bxf3 10. Bxf3 0-0 11. Bxb7 Nbd7 12. Bxa8 Qxa8 13. f3 Qb8 14. e4 Qb5 15. Be3 Nb6 16. a4 Qa6 17. Qb3 Rb8 18. Rfb1 c6 19. a5 Qe2 20. Bf2 h6 21. axb6 Rxb6 22. Qd1 Qxd1+ 23. Rxd1 Rb3 24. c4 Rb4 25. c5 Nd7 26. Rxa7 Nb8 27. Rc7 Na6 28. Rxc6 Nb8 29. Rc8+ Kh7 30. d5 exd5 31. exd5 Na6 32. d6 Rc4 33. d7 Rxc5 34. Bxc5 Nxc5 35. d8Q Ne6 36. Qg8+ Kg6 37. Rd7 Kf6 38. Qxf7+ Ke5 39. Re8 h5 40. Rxe6# 1-0

[Event "Apeldoorn Lichess blitz Inv"]
[Site "Lichess.org INT"]
[Date "2020.06.27"]
[Round "2.2"]
[White "Lahaye, Rick"]
[Black "De Boer, Bas"]
[Result "1-0"]
[ECO "D94"]
[WhiteElo "2413"]
[BlackElo "2145"]
[PlyCount "55"]
[EventDate "2020.06.27"]
[EventType "k.o. (blitz)"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. e3 d5 2. Nf3 Nf6 3. b3 g6 4. Bb2 Bg7 5. Be2 0-0 6. 0-0 Bg4 7. h3 Bxf3 8. Bxf3 Nbd7 9. d4 e6 10. c4 c6 11. Nc3 Qe7 12. Qe2 Rfe8 13. Rfd1 dxc4 14. bxc4 e5 15. Qc2 Qb4 16. Be2 Rad8 17. a4 Qa5 18. Ba3 exd4 19. exd4 c5 20. Nb5 Ne4 21. Bf3 Ndf6 22. dxc5 a6 23. Nd6 Nxd6 24. cxd6 Nd7 25. Rab1 Nc5 26. Bxc5 Qxc5 27. Rd5 Qa3 28. c5 1-0

[Event "Apeldoorn Lichess blitz Inv"]
[Site "Lichess.org INT"]
[Date "2020.06.27"]
[Round "1.1"]
[White "Pantus, Alec"]
[Black "De Boer, Bas"]
[Result "0-1"]
[ECO "C42"]
[BlackElo "2145"]
[PlyCount "34"]
[EventDate "2020.06.27"]
[EventType "k.o. (blitz)"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. Nf3 Nxe4 4. d3 Nf6 5. Bg5 d5 6. Bxf6 gxf6 7. Bb5+ c6 8. Bxc6+ Nxc6 9. 0-0 Bc5 10. Nc3 Be6 11. Rb1 Qd7 12. a3 Rg8 13. b4 Bb6 14. a4 Bh3 15. Ne1 Bxg2 16. Nxg2 Qh3 17. Nxd5 Qxg2# 0-1

[Event "Hastings Masters op 95th"]
[Site "Hastings"]
[Date "2020.01.05"]
[Round "9"]
[White "Wall, Tim"]
[Black "De Boer, Bas"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "2218"]
[BlackElo "2138"]
[PlyCount "88"]
[EventDate "2019.12.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. d4 d5 2. Nc3 Nf6 3. Bf4 c6 4. e3 g6 5. Nf3 Bg7 6. Be2 Nbd7 7. h4 Nf8 8. Ne5 h5 9. Qd2 Ne6 10. Bh2 c5 11. Bb5+ Kf8 12. 0-0 a6 13. Be2 cxd4 14. exd4 Bh6 15. Qd3 Ng7 16. Na4 Nf5 17. Nf3 Ng4 18. Qb3 Nxh2 19. Kxh2 Bf4+ 20. g3 Bc7 21. c3 Kg7 22. Nc5 b6 23. Nd3 Nh6 24. Qc2 Bf5 25. Qd2 Ng4+ 26. Kg1 Nf6 27. Ng5 Ne4 28. Nxe4 dxe4 29. Ne1 e5 30. Nc2 exd4 31. Qxd4+ Qxd4 32. Nxd4 Bc8 33. Rad1 Re8 34. Bc4 Bg4 35. Rd2 b5 36. Bd5 Rad8 37. Bc6 e3 38. Rd3 exf2+ 39. Kxf2 Re2+ 40. Kg1 Rxb2 41. Re3 Bh3 42. Rd1 Bb6 43. a3 Rd6 44. Bf3 Rf6 0-1

[Event "Hastings Masters op 95th"]
[Site "Hastings"]
[Date "2020.01.04"]
[Round "8"]
[White "De Boer, Bas"]
[Black "Petrov, Vladimir Sergeev"]
[Result "1/2-1/2"]
[ECO "E05"]
[WhiteElo "2138"]
[BlackElo "2355"]
[PlyCount "155"]
[EventDate "2019.12.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 Be7 5. Bg2 0-0 6. 0-0 dxc4 7. Qc2 a6 8. a4 Bd7 9. Qxc4 Bc6 10. Bg5 a5 11. Nc3 Na6 12. Rfd1 Nb4 13. Bxf6 Bxf6 14. e4 b6 15. Rac1 Bb7 16. Qe2 g6 17. e5 Be7 18. h4 h5 19. Ne1 Bxg2 20. Nxg2 Kg7 21. Nf4 c6 22. Ne4 Rc8 23. Nh3 Rc7 24. Rd2 Rd7 25. Rcd1 Rb7 26. Nhg5 Qd5 27. Nf6 Qd8 28. Nfe4 Rd7 29. f4 Rh8 30. Nf3 Qc8 31. Rc1 Qc7 32. Kg2 Rhd8 33. Rcd1 Qb7 34. Kh3 Qa6 35. Qg2 Nd5 36. Qe2 Qxe2 37. Rxe2 Nb4 38. Rc1 Rc7 39. Ned2 c5 40. Ne4 Rcd7 41. dxc5 Nd3 42. Rcc2 Nxc5 43. Nxc5 Bxc5 44. Red2 Kf8 45. Rxd7 Rxd7 46. Rd2 Rxd2 47. Nxd2 Ke8 48. Ne4 Kd7 49. Kg2 Be7 50. Kf3 Kc6 51. Ke3 Kd5 52. Kd3 Bd8 53. b3 Be7 54. Nc3+ Kc5 55. Ne4+ Kb4 56. Kc2 Bc5 57. Ng5 Bf2 58. Ne4 Be1 59. Kb2 b5 60. axb5 Kxb5 61. Kc2 Kb4 62. Kb2 a4 63. bxa4 Kc4 64. Kc2 Kd4 65. Kd1 Bb4 66. Ng5 Ke3 67. Nxf7 Kf3 68. Nh8 Kxg3 69. Nxg6 Kg4 70. Kc2 Kf5 71. Kb3 Be1 72. Nf8 Bxh4 73. Kc4 Bg3 74. Kd3 h4 75. Ke2 Bxf4 76. Kf2 Bxe5 77. Kg2 Bg7 78. Nxe6 1/2-1/2

[Event "Hastings Masters op 95th"]
[Site "Hastings"]
[Date "2020.01.03"]
[Round "7"]
[White "Burrows, Nick"]
[Black "De Boer, Bas"]
[Result "0-1"]
[ECO "D35"]
[WhiteElo "1952"]
[BlackElo "2138"]
[PlyCount "108"]
[EventDate "2019.12.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. cxd5 exd5 4. Nc3 c6 5. Qc2 Nf6 6. Bg5 Nbd7 7. e3 Qa5 8. Bd3 Bb4 9. Nge2 h6 10. Bh4 0-0 11. 0-0 Re8 12. a3 Bf8 13. Rac1 g5 14. Bg3 Bg7 15. Na4 Qd8 16. b4 Qe7 17. Nc5 Ne4 18. Bxe4 dxe4 19. Nc3 f5 20. Rfd1 Qf7 21. Qd2 Nb6 22. b5 Nc4 23. Qa2 b6 24. bxc6 bxc5 25. Nb5 f4 26. exf4 gxf4 27. Bxf4 Qxf4 28. Qxc4+ Be6 29. d5 Bg4 30. d6+ Kh8 31. Nc7 Be5 32. g3 Qf3 33. Qf1 e3 34. fxe3 Qxe3+ 35. Qf2 Qxf2+ 36. Kxf2 Rf8+ 37. Kg1 Rab8 38. Na6 Rbd8 39. d7 Bd4+ 40. Rxd4 cxd4 41. Nc5 d3 42. Nxd3 Bxd7 43. cxd7 Rxd7 44. Nf4 Rd6 45. Rc7 Ra6 46. Kg2 Rf5 47. h4 Kg8 48. h5 Rxa3 49. Rc6 Rg5 50. Rc8+ Kh7 51. Kh2 Rgxg3 52. Rc7+ Rg7 53. Rc6 Rb7 54. Rc2 Rab3 0-1

[Event "Hastings Masters op 95th"]
[Site "Hastings"]
[Date "2020.01.02"]
[Round "6"]
[White "De Boer, Bas"]
[Black "Norinkeviciute, Rasa"]
[Result "1/2-1/2"]
[ECO "A30"]
[WhiteElo "2138"]
[BlackElo "2018"]
[PlyCount "102"]
[EventDate "2019.12.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 b6 4. g3 Bb7 5. Bg2 c5 6. 0-0 Be7 7. d4 cxd4 8. Qxd4 Nc6 9. Qf4 0-0 10. Rd1 d6 11. b3 Nb4 12. a3 Na6 13. Bb2 Nc7 14. e4 Qc8 15. Rac1 Rd8 16. h3 Rd7 17. Qe3 Qf8 18. b4 Rad8 19. Nd4 e5 20. Nf5 Qe8 21. g4 Bf8 22. Bf3 g6 23. Ng3 h6 24. Nd5 Ncxd5 25. cxd5 Rc8 26. Be2 Rdc7 27. Rxc7 Rxc7 28. Rc1 Qc8 29. Rxc7 Qxc7 30. Qc1 Qxc1+ 31. Bxc1 Kg7 32. Be3 Be7 33. f3 Ne8 34. Nf1 Bc8 35. Bb5 Nc7 36. Bc6 f5 37. b5 Bh4 38. Nd2 f4 39. Bf2 Bxf2+ 40. Kxf2 Kf6 41. Nc4 Ke7 42. a4 Bd7 43. Ke2 Ne8 44. Nb2 Nf6 45. Nd3 Bc8 46. Nb4 Kd8 47. Ba8 Bd7 48. Bb7 g5 49. Nc6+ Bxc6 50. bxc6 Ne8 51. Kd2 Nc7 1/2-1/2

[Event "Hastings Masters op 95th"]
[Site "Hastings"]
[Date "2020.01.01"]
[Round "5"]
[White "Chapman, Matt"]
[Black "De Boer, Bas"]
[Result "1/2-1/2"]
[ECO "B13"]
[WhiteElo "1937"]
[BlackElo "2138"]
[PlyCount "48"]
[EventDate "2019.12.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 c5 3. e3 cxd4 4. exd4 Nc6 5. c3 Bf5 6. Nd2 e6 7. Qb3 Qd7 8. Ngf3 f6 9. h4 Nh6 10. Be2 Nf7 11. c4 dxc4 12. Nxc4 Bb4+ 13. Kf1 0-0 14. Rd1 Be4 15. Ne3 Rfd8 16. Bc4 Bd5 17. Bxd5 exd5 18. g3 Bf8 19. Rc1 Rac8 20. Kg2 Nh8 21. h5 Qf7 22. Nf5 Qd7 23. Ne3 Qf7 24. Nf5 Qd7 1/2-1/2

[Event "Hastings Masters op 95th"]
[Site "Hastings"]
[Date "2019.12.31"]
[Round "4"]
[White "De Boer, Bas"]
[Black "Zheng, Jerry Z"]
[Result "1-0"]
[ECO "E05"]
[WhiteElo "2138"]
[BlackElo "1565"]
[PlyCount "59"]
[EventDate "2019.12.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 Be7 5. Bg2 0-0 6. 0-0 dxc4 7. Qc2 a6 8. a4 Bd7 9. Qxc4 Bc6 10. Bg5 Bd5 11. Qc2 Nbd7 12. Nc3 Bc6 13. e4 h6 14. Bxf6 Nxf6 15. Rad1 b6 16. d5 exd5 17. e5 Nd7 18. Nd4 Bb7 19. Nxd5 Bc5 20. Nf6+ gxf6 21. Bxb7 fxe5 22. Nf5 Ra7 23. Bc6 Bd6 24. Qd2 f6 25. Bd5+ Rf7 26. Qxh6 Qf8 27. Qg6+ Kh8 28. Bxf7 Ra8 29. Qh5+ Qh6 30. Qxh6# 1-0

[Event "Hastings Masters op 95th"]
[Site "Hastings"]
[Date "2019.12.30"]
[Round "3"]
[White "Grieve, Harry"]
[Black "De Boer, Bas"]
[Result "1-0"]
[ECO "C44"]
[WhiteElo "2299"]
[BlackElo "2138"]
[PlyCount "75"]
[EventDate "2019.12.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. d3 Nc6 4. Be2 d5 5. Nbd2 Bd6 6. h3 0-0 7. c3 Re8 8. Qc2 a6 9. Nf1 Ne7 10. Bg5 dxe4 11. dxe4 Ng6 12. g3 h6 13. Be3 Be6 14. N1d2 Qc8 15. Bf1 Nd7 16. Bc4 Bc5 17. Bxe6 Rxe6 18. Bxc5 Nxc5 19. 0-0 Rf6 20. Kg2 Ne6 21. Rh1 Ng5 22. Nxg5 hxg5 23. Nc4 Qe6 24. Ne3 Qc6 25. Rad1 Rd6 26. Nf5 Rdd8 27. Qe2 Qa4 28. b3 Qc6 29. Rd3 Rxd3 30. Qxd3 Qf6 31. Qd7 Qd8 32. Rd1 Qxd7 33. Rxd7 Rc8 34. Kf3 Nf8 35. Re7 Ng6 36. Kg4 Kf8 37. Rd7 Ke8 38. Rd2 1-0

[Event "Hastings Masters op 95th"]
[Site "Hastings"]
[Date "2019.12.29"]
[Round "2"]
[White "De Boer, Bas"]
[Black "Metcalfe, Charlie P"]
[Result "1-0"]
[ECO "D27"]
[WhiteElo "2138"]
[BlackElo "1867"]
[PlyCount "57"]
[EventDate "2019.12.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. Nf3 d5 2. e3 Nf6 3. c4 dxc4 4. Bxc4 e6 5. 0-0 a6 6. d4 c5 7. b3 cxd4 8. Nxd4 Bd7 9. Bb2 Nc6 10. Nc3 Be7 11. Nf3 0-0 12. Rc1 Rc8 13. Qe2 Qa5 14. Rfd1 Rfd8 15. h3 b5 16. Bd3 Bb4 17. Ne4 Nd5 18. Nfg5 h6 19. Nxf7 Kxf7 20. Qh5+ Ke7 21. Bxg7 Be8 22. Qxh6 Kd7 23. Ng5 Nc3 24. Be4+ Nxd1 25. Qxe6+ Kc7 26. Rxc6+ Kb8 27. Rb6+ Ka7 28. Rb7+ Ka8 29. Rxb5+ 1-0

[Event "Hastings Masters op 95th"]
[Site "Hastings"]
[Date "2019.12.28"]
[Round "1"]
[White "Wadsworth, Matthew J"]
[Black "De Boer, Bas"]
[Result "1-0"]
[ECO "A11"]
[WhiteElo "2401"]
[BlackElo "2138"]
[PlyCount "51"]
[EventDate "2019.12.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 c6 4. c4 dxc4 5. 0-0 Nbd7 6. Qc2 Nb6 7. Na3 Be6 8. Ng5 Qd7 9. Nxe6 Qxe6 10. e4 g6 11. b3 cxb3 12. axb3 Bg7 13. Bb2 0-0 14. d4 Rfd8 15. Nc4 Ne8 16. Rfd1 Nd6 17. Na5 Qd7 18. Rd2 f5 19. e5 Nb5 20. Nxb7 Nxd4 21. Bxd4 Qxb7 22. Bxc6 Qc8 23. Bxa8 Qxc2 24. Rxc2 Rxd4 25. Rxa7 Bxe5 26. Rxe7 1-0

[Event "Hoogeveen op 23rd"]
[Site "Hoogeveen"]
[Date "2019.10.26"]
[Round "9"]
[White "Boersma, Jan"]
[Black "De Boer, Bas"]
[Result "1/2-1/2"]
[ECO "B30"]
[WhiteElo "2070"]
[BlackElo "2142"]
[PlyCount "27"]
[EventDate "2019.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 192 Extra"]
[Source "Chessbase"]
[SourceDate "2019.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2019.11.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. Nc3 Nc6 4. Bb5 Nge7 5. 0-0 a6 6. Bxc6 Nxc6 7. d4 cxd4 8. Nxd4 Qc7 9. Re1 Bd6 10. h3 Nxd4 11. Qxd4 Be5 12. Qd3 b5 13. Be3 0-0 14. Bd4 1/2-1/2

[Event "Hoogeveen op 23rd"]
[Site "Hoogeveen"]
[Date "2019.10.25"]
[Round "8"]
[White "De Boer, Bas"]
[Black "Garcia Morales, Ivette Alejandra"]
[Result "1-0"]
[ECO "E11"]
[WhiteElo "2142"]
[BlackElo "2013"]
[PlyCount "117"]
[EventDate "2019.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 192 Extra"]
[Source "Chessbase"]
[SourceDate "2019.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2019.11.06"]
[SourceQuality "1"]

1. d4 e6 2. c4 Nf6 3. g3 Bb4+ 4. Bd2 Qe7 5. Nf3 Nc6 6. Nc3 Bxc3 7. Bxc3 Ne4 8. Rc1 Nxc3 9. Rxc3 d6 10. d5 Nb8 11. Bg2 e5 12. 0-0 a5 13. Nd2 0-0 14. f4 f5 15. e4 Na6 16. exf5 Rxf5 17. Re3 Nc5 18. Qe2 Bd7 19. Nf3 Re8 20. Re1 Qf8 21. b3 c6 22. fxe5 cxd5 23. cxd5 dxe5 24. Nxe5 Rfxe5 25. Rxe5 Rxe5 26. Qxe5 Nd3 27. Qe3 Nxe1 28. Qxe1 Qc5+ 29. Kh1 h5 30. h3 h4 31. g4 g5 32. Qd2 Qe7 33. Qxa5 Qf6 34. Qe1 Qf4 35. d6 Qxd6 36. Qc1 Qe5 37. Bxb7 Be6 38. Bg2 Kg7 39. Qd1 Qc3 40. Qd6 Qc1+ 41. Kh2 Kf7 42. Qe5 Qd2 43. a4 Bxb3 44. a5 Be6 45. a6 Qf2 46. Qc7+ Kf6 47. a7 Bd5 48. Qd6+ Kg7 49. Qe5+ Kh6 50. Qd6+ Kg7 51. Qxd5 Qg3+ 52. Kg1 Qe3+ 53. Kf1 Qc1+ 54. Ke2 Qb2+ 55. Kd3 Qa3+ 56. Kd4 Qa4+ 57. Ke5 Qf4+ 58. Ke6 Qf7+ 59. Kd6 1-0

[Event "Hoogeveen op 23rd"]
[Site "Hoogeveen"]
[Date "2019.10.24"]
[Round "7"]
[White "Taams, Sander"]
[Black "De Boer, Bas"]
[Result "1/2-1/2"]
[ECO "B30"]
[WhiteElo "2094"]
[BlackElo "2142"]
[PlyCount "166"]
[EventDate "2019.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 192 Extra"]
[Source "Chessbase"]
[SourceDate "2019.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2019.11.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. Nc3 Nc6 4. Bb5 Nd4 5. Bd3 a6 6. 0-0 b5 7. b3 Bb7 8. Bb2 Nf6 9. Nxd4 cxd4 10. Ne2 e5 11. f4 d6 12. Ng3 h5 13. Qe2 h4 14. Nf5 g6 15. Nxd4 exd4 16. e5 dxe5 17. fxe5 Nh5 18. e6 f5 19. Bxb5+ Ke7 20. Bd7 Qa5 21. Bxd4 Bg7 22. Bxg7 Nxg7 23. Qe3 Rh5 24. c4 Ne8 25. Bxe8 Rxe8 26. d4 Be4 27. d5 Rc8 28. Rad1 Rhh8 29. Qa7+ Kd6 30. Qd7+ Ke5 31. Qg7+ Kd6 32. h3 Qc7 33. Qf6 Qe7 34. Qb2 Qc7 35. Qf6 Rcf8 36. Qb2 Rc8 37. Rc1 Qc5+ 38. Kh1 a5 39. Rfe1 Rhf8 40. Qd2 g5 41. Qxg5 Qf2 42. Rf1 Qg3 43. Qxg3+ hxg3 44. Rfe1 Rh8 45. Kg1 Ke5 46. Rc3 Rhg8 47. Rce3 Rb8 48. Kf1 Rb7 49. R1e2 Kd4 50. d6 Ke5 51. e7 Kxd6 52. Rxg3 Re8 53. Rd2+ Kc5 54. Rg5 Rbxe7 55. g4 Kb4 56. gxf5 Kc3 57. Rf2 Bc6 58. Rg3+ Kb4 59. Rd2 Re1+ 60. Kf2 Rh1 61. Rgd3 Rf8 62. Ke3 Rxf5 63. Kd4 Ra1 64. Rg3 Rh5 65. Rg8 Rh4+ 66. Ke5 Kc5 67. Rg5 Re1+ 68. Kf6+ Kb4 69. a3+ Kxa3 70. Rxa5+ Kxb3 71. Rd3+ Kxc4 72. Rg3 Rf4+ 73. Kg5 Rfe4 74. Rg4 Rxg4+ 75. hxg4 Kd4 76. Ra6 Bd5 77. Kg6 Ke5 78. Ra5 Rg1 79. Kg5 Rh1 80. Kg6 Rh8 81. g5 Rg8+ 82. Kh6 Kd4 83. g6 Ke5 1/2-1/2

[Event "Hoogeveen op 23rd"]
[Site "Hoogeveen"]
[Date "2019.10.23"]
[Round "6"]
[White "De Boer, Bas"]
[Black "Emans, Job"]
[Result "0-1"]
[ECO "D32"]
[WhiteElo "2142"]
[BlackElo "2028"]
[PlyCount "68"]
[EventDate "2019.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 192 Extra"]
[Source "Chessbase"]
[SourceDate "2019.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2019.11.06"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 d5 4. e3 Be7 5. b3 0-0 6. Bb2 c5 7. cxd5 exd5 8. d4 Nc6 9. Be2 Re8 10. dxc5 Bxc5 11. 0-0 Bg4 12. Rc1 Bb6 13. Nb5 Ne4 14. Nbd4 Qd6 15. Nxc6 bxc6 16. Nd4 Bd7 17. Bg4 Bc7 18. g3 c5 19. Nf5 Qg6 20. Nh6+ Qxh6 21. Bxd7 Re7 22. Bf5 Rd8 23. Rc2 Qg5 24. Qg4 Qxg4 25. Bxg4 d4 26. exd4 cxd4 27. Rd1 d3 28. Rc4 Bb6 29. Ba3 Re5 30. Rc6 Nxf2 31. Rxb6 Nxd1 32. Rb7 Re1+ 33. Kg2 Ne3+ 34. Kf2 Nxg4+ 0-1

[Event "Hoogeveen op 23rd"]
[Site "Hoogeveen"]
[Date "2019.10.22"]
[Round "5"]
[White "Dev, Shah"]
[Black "De Boer, Bas"]
[Result "1-0"]
[ECO "D17"]
[WhiteElo "2025"]
[BlackElo "2142"]
[PlyCount "93"]
[EventDate "2019.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 192 Extra"]
[Source "Chessbase"]
[SourceDate "2019.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2019.11.06"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 dxc4 5. a4 Bf5 6. Ne5 Nbd7 7. Nxc4 Nb6 8. Ne5 a5 9. f3 Nfd7 10. e4 Bg6 11. Be2 Nxe5 12. dxe5 Qxd1+ 13. Kxd1 e6 14. Be3 Nd7 15. f4 Bb4 16. Bf3 0-0-0 17. Ke2 Nc5 18. g4 f6 19. Bxc5 Bxc5 20. exf6 gxf6 21. Rac1 Kb8 22. Rhd1 e5 23. f5 Bf7 24. Nd5 Bd4 25. Nxf6 Bb3 26. Rd2 Bxa4 27. Rh1 Bb5+ 28. Ke1 a4 29. Rg2 Rd6 30. Nh5 Bc5 31. g5 Rd3 32. Be2 Re3 33. Ng3 Rd8 34. f6 a3 35. bxa3 Ba4 36. Kf1 Rxa3 37. Rf2 Bxf2 38. Kxf2 b5 39. h4 b4 40. h5 Bb3 41. Rb1 c5 42. Rxb3 Rxb3 43. g6 Ra3 44. g7 Ra7 45. Bc4 b3 46. Bxb3 Ra6 47. f7 1-0

[Event "Hoogeveen op 23rd"]
[Site "Hoogeveen"]
[Date "2019.10.21"]
[Round "4"]
[White "De Boer, Bas"]
[Black "Romanishin, Oleg M"]
[Result "1/2-1/2"]
[ECO "E60"]
[WhiteElo "2142"]
[BlackElo "2441"]
[PlyCount "75"]
[EventDate "2019.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 192 Extra"]
[Source "Chessbase"]
[SourceDate "2019.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2019.11.06"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 d6 3. d4 g6 4. g3 c6 5. Bg2 Bf5 6. 0-0 Bg7 7. Nc3 Ne4 8. Nb1 Qb6 9. b3 0-0 10. Bb2 d5 11. cxd5 cxd5 12. Ne5 Rc8 13. g4 Be6 14. e3 Nd7 15. Nd3 Rc7 16. f3 Nd6 17. Nc3 Rac8 18. Na4 Qb5 19. Rf2 Nf8 20. Bf1 Qe8 21. Nf4 Bh6 22. Nc5 Bxf4 23. exf4 Bd7 24. Bd3 Bb5 25. Bb1 b6 26. Nd3 a5 27. Qd2 Nc4 28. bxc4 dxc4 29. Nc5 bxc5 30. dxc5 Rxc5 31. Qc3 f6 32. Bc2 Ba4 33. Be4 Ne6 34. Bc1 Bc6 35. Bc2 Ba4 36. Be4 Bc6 37. Bc2 Ba4 38. Be4 1/2-1/2

[Event "Hoogeveen op 23rd"]
[Site "Hoogeveen"]
[Date "2019.10.21"]
[Round "3"]
[White "De Winter, Arthur"]
[Black "De Boer, Bas"]
[Result "1/2-1/2"]
[ECO "C42"]
[WhiteElo "1896"]
[BlackElo "2142"]
[PlyCount "74"]
[EventDate "2019.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 192 Extra"]
[Source "Chessbase"]
[SourceDate "2019.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2019.11.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3 Nxc3 6. dxc3 Be7 7. Be3 0-0 8. Qd2 c5 9. Bc4 Nd7 10. 0-0 Nf6 11. Rad1 Qa5 12. a3 b5 13. Be2 Bb7 14. Bf4 Rfe8 15. c4 Qxd2 16. Nxd2 bxc4 17. Nxc4 Ba6 18. Rfe1 Bf8 19. Bf1 Rxe1 20. Rxe1 d5 21. Ne3 Bc8 22. Be5 Be6 23. Bxf6 gxf6 24. Rd1 Rd8 25. Bd3 Rb8 26. b3 c4 27. bxc4 dxc4 28. Bxc4 Bxa3 29. Bxe6 fxe6 30. Kf1 Bc5 31. Ke2 a5 32. Ra1 Bb4 33. Nd1 Ra8 34. Ra4 Rc8 35. c3 Bxc3 36. Nxc3 Rxc3 37. Rxa5 Kf7 1/2-1/2

[Event "Hoogeveen op 23rd"]
[Site "Hoogeveen"]
[Date "2019.10.20"]
[Round "2"]
[White "De Boer, Bas"]
[Black "Fehr, Axel"]
[Result "1-0"]
[ECO "E63"]
[WhiteElo "2142"]
[BlackElo "2045"]
[PlyCount "95"]
[EventDate "2019.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 192 Extra"]
[Source "Chessbase"]
[SourceDate "2019.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2019.11.06"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 d6 5. Nf3 0-0 6. 0-0 Nc6 7. Nc3 a6 8. h3 Rb8 9. e4 b5 10. d5 b4 11. Ne2 Na5 12. Qc2 b3 13. Qc3 c5 14. Bd2 Rb4 15. Qd3 Rb8 16. Bxa5 Qxa5 17. axb3 Qb6 18. Nd2 Nd7 19. Qc2 Bh6 20. f4 f5 21. Nc3 Nf6 22. Rae1 Nh5 23. Kh2 Qd8 24. Re2 e5 25. dxe6 Bxe6 26. e5 Kh8 27. Nd5 dxe5 28. Rxe5 Qd6 29. Rfe1 Bf7 30. Bf3 Bg7 31. Bxh5 gxh5 32. Rxf5 Bg6 33. Rxf8+ Rxf8 34. Qc1 h4 35. Nf3 hxg3+ 36. Kxg3 Bf5 37. Ne5 Qh6 38. Ng4 Qd6 39. Nge3 Qg6+ 40. Kh2 Bxh3 41. Kxh3 Bd4 42. Ng4 Rg8 43. Qd1 h5 44. Ne7 Qxg4+ 45. Qxg4 hxg4+ 46. Kg3 Rb8 47. Kxg4 Rxb3 48. Kg5 1-0

