[Event "Groningen Combinatie op"]
[Site "Groningen"]
[Date "2023.05.21"]
[Round "7"]
[White "Gomez Becerra, Pablo"]
[Black "Westerlaan, Sander"]
[Result "0-1"]
[ECO "D06"]
[WhiteElo "1696"]
[BlackElo "1960"]
[PlyCount "66"]
[EventDate "2023.05.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. e3 Bf5 4. c4 e6 5. Be2 Bd6 6. Nc3 Nbd7 7. cxd5 exd5 8. Qb3 Nb6 9. a4 a5 10. Nb5 Be7 11. Bd3 Ne4 12. 0-0 c6 13. Na3 Bd6 14. Qc2 Qf6 15. b3 Qh6 16. Nc4 Nxc4 17. bxc4 Ng5 18. Ne5 Bxe5 19. dxe5 Nf3+ 20. gxf3 Qg6+ 21. Kh1 Bxd3 22. Qd1 Bxf1 23. Qxf1 Qf5 24. Qe2 dxc4 25. Qxc4 Qxf3+ 26. Kg1 0-0-0 27. Ba3 Rhe8 28. Bd6 Re6 29. Rc1 Qh3 30. Kh1 Qf3+ 31. Kg1 h5 32. Kf1 Rg6 33. Qc5 Rg2 0-1

[Event "Groningen Combinatie op"]
[Site "Groningen"]
[Date "2023.05.21"]
[Round "6"]
[White "Westerlaan, Sander"]
[Black "Slagboom, Leandro"]
[Result "0-1"]
[ECO "D38"]
[WhiteElo "1960"]
[BlackElo "2250"]
[PlyCount "52"]
[EventDate "2023.05.18"]
[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. Nc3 Bb4 5. Qa4+ Nc6 6. Bg5 h6 7. Bxf6 Qxf6 8. e3 0-0 9. Rc1 Rd8 10. cxd5 exd5 11. Bb5 Bg4 12. Bxc6 Bxc3+ 13. Rxc3 Bxf3 14. Bxb7 Rab8 15. gxf3 Qxf3 16. Rg1 Rxb7 17. b3 Qf5 18. Qc6 Rb6 19. Qxc7 Re8 20. Rc1 Rf6 21. Qc2 Qf4 22. Rg3 Qxd4 23. Qc3 Qf4 24. Kd1 Qxf2 25. Rc2 Qf1+ 26. Kd2 Rf2# 0-1

[Event "Groningen Combinatie op"]
[Site "Groningen"]
[Date "2023.05.20"]
[Round "5"]
[White "Keuning, Selwin"]
[Black "Westerlaan, Sander"]
[Result "1/2-1/2"]
[ECO "B07"]
[WhiteElo "2148"]
[BlackElo "1960"]
[PlyCount "66"]
[EventDate "2023.05.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. e4 c5 2. c3 d6 3. d4 Nf6 4. Bd3 Nc6 5. d5 Ne5 6. Be2 e6 7. Nf3 exd5 8. exd5 Nxf3+ 9. Bxf3 Be7 10. 0-0 0-0 11. a4 Bf5 12. Na3 a6 13. Bf4 Qc7 14. Re1 Rfe8 15. Nc4 Bf8 16. Rxe8 Rxe8 17. a5 g6 18. h3 Be4 19. Nb6 Bg7 20. Bxe4 Rxe4 21. Qf3 Qe7 22. Nc8 Qc7 23. Nb6 Qe7 24. Nc8 Qc7 25. Nb6 Re8 26. Nc4 Re4 27. Nb6 Qe7 28. Nc8 Qc7 29. Nxd6 Rxf4 30. Qxf4 Ne8 31. Qxf7+ Qxf7 32. Nxf7 Kxf7 33. Re1 Nd6 1/2-1/2

[Event "Groningen Combinatie op"]
[Site "Groningen"]
[Date "2023.05.20"]
[Round "4"]
[White "Westerlaan, Sander"]
[Black "Karsdorp, Nico"]
[Result "1-0"]
[ECO "A90"]
[WhiteElo "1960"]
[BlackElo "1746"]
[PlyCount "71"]
[EventDate "2023.05.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. Nf3 f5 2. d4 Nf6 3. c4 e6 4. g3 d5 5. Bg2 c6 6. 0-0 Bd6 7. Bf4 Bxf4 8. gxf4 0-0 9. e3 Bd7 10. Nbd2 Be8 11. Qc2 Ne4 12. Ne5 Nd7 13. Nxd7 Qxd7 14. Nf3 Qe7 15. Ne5 Qh4 16. f3 Nf6 17. c5 Nh5 18. Rf2 Rf6 19. Bf1 Rh6 20. Bd3 Nxf4 21. exf4 Qxf4 22. Qc3 Rh4 23. Bf1 Qxd4 24. Qxd4 Rxd4 25. f4 Bh5 26. Rc1 Rf8 27. a3 Rf6 28. Rc3 Bd1 29. Ba6 bxa6 30. Nxc6 Rc4 31. Rxc4 dxc4 32. Ne5 c3 33. bxc3 Rf8 34. c6 Bb3 35. Rb2 Bd5 36. c7 1-0

[Event "Groningen Combinatie op"]
[Site "Groningen"]
[Date "2023.05.19"]
[Round "2"]
[White "Ambrona Navarro, Himar"]
[Black "Westerlaan, Sander"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1833"]
[BlackElo "1960"]
[PlyCount "40"]
[EventDate "2023.05.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. d4 d5 2. c3 Nf6 3. Bf4 e6 4. e3 Bd6 5. Bg3 c5 6. Bd3 0-0 7. Nf3 Qc7 8. Nbd2 Nbd7 9. Bxd6 Qxd6 10. 0-0 e5 11. dxc5 Nxc5 12. Bc2 e4 13. Nd4 Ng4 14. g3 Qh6 15. h4 g5 16. Kg2 gxh4 17. Rh1 h3+ 18. Kg1 a5 19. Qf1 h2+ 20. Kg2 Nxe3+ 0-1

[Event "Groningen op 58th"]
[Site "Groningen"]
[Date "2022.12.26"]
[Round "5"]
[White "Westerlaan, Sander"]
[Black "Matsumura, Cocoro"]
[Result "0-1"]
[ECO "D29"]
[WhiteElo "1954"]
[BlackElo "2133"]
[PlyCount "62"]
[EventDate "2022.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 211 Extra"]
[Source "ChessBase"]
[SourceDate "2023.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.01.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 a6 6. Bxc4 b5 7. Bb3 Bb7 8. Qe2 Nbd7 9. 0-0 c5 10. Rd1 Qb8 11. d5 exd5 12. Bxd5 Nxd5 13. Nxd5 Bd6 14. b3 0-0 15. Bb2 Ne5 16. Bxe5 Bxe5 17. Rac1 Bd6 18. e4 Re8 19. Rc3 h6 20. Re3 Bc6 21. e5 Bf8 22. Qc2 Qb7 23. Ng5 hxg5 24. Rh3 f5 25. exf6 Bxd5 26. Qg6 Be4 27. f7+ Qxf7 28. Rh8+ Kxh8 29. Qxf7 Rad8 30. Re1 Bg6 31. Rxe8 Rd1+ 0-1

[Event "Groningen op 58th"]
[Site "Groningen"]
[Date "2022.12.24"]
[Round "4"]
[White "Maatman, Nick"]
[Black "Westerlaan, Sander"]
[Result "1-0"]
[ECO "B19"]
[WhiteElo "2348"]
[BlackElo "1954"]
[PlyCount "55"]
[EventDate "2022.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 211 Extra"]
[Source "ChessBase"]
[SourceDate "2023.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.01.31"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nf3 Nd7 8. h5 Bh7 9. Bd3 Bxd3 10. Qxd3 Ngf6 11. Bf4 e6 12. 0-0-0 Be7 13. Kb1 0-0 14. Qe3 Qb6 15. Rd3 Qb5 16. Ne5 Nb6 17. c4 Qa6 18. Rc1 Nbd7 19. Nxd7 Nxd7 20. Ne4 Rae8 21. Nd6 Rd8 22. Ra3 Qb6 23. c5 Qc7 24. Bg3 e5 25. dxe5 Bxd6 26. cxd6 Qc8 27. Bh4 Rde8 28. Be7 1-0

[Event "Groningen Compact op-D"]
[Site "Groningen"]
[Date "2008.12.30"]
[Round "5"]
[White "Westerlaan, Sander"]
[Black "Steenbergen, Ruud"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "1200"]
[BlackElo "1418"]
[PlyCount "53"]
[EventDate "2008.12.26"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "CBM 127 Extra"]
[Source "ChessBase"]
[SourceDate "2009.01.08"]
[SourceVersion "2"]
[SourceVersionDate "2009.01.28"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 h6 5. Qc2 Be7 6. e4 dxe4 7. Nxe4 Nc6 8. Be3 Ng4 9. Be2 Nxe3 10. fxe3 Bb4+ 11. Nc3 f5 12. a3 Be7 13. b4 Bg5 14. b5 Na5 15. Ne5 h5 16. Qd1 Bxe3 17. Bxh5+ Kf8 18. Ng6+ Kg8 19. Nxh8 Kxh8 20. Be2 Bxd4 21. Rc1 c5 22. bxc6 bxc6 23. Bf3 Nxc4 24. Bxc6 Rb8 25. Qh5+ Kg8 26. Nb5 Qa5+ 27. Kf1 1/2-1/2

[Event "Groningen Compact op-D"]
[Site "Groningen"]
[Date "2008.12.28"]
[Round "3"]
[White "Kazarian, Anna Maja"]
[Black "Westerlaan, Sander"]
[Result "0-1"]
[ECO "B33"]
[WhiteElo "1381"]
[BlackElo "1200"]
[PlyCount "130"]
[EventDate "2008.12.26"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "CBM 127 Extra"]
[Source "ChessBase"]
[SourceDate "2009.01.08"]
[SourceVersion "2"]
[SourceVersionDate "2009.01.28"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Nf3 Bb4 7. Bd3 d5 8. Bg5 d4 9. a3 Ba5 10. b4 Nxb4 11. axb4 Bxb4 12. 0-0 Bxc3 13. Rb1 Qc7 14. Bd2 Bxd2 15. Nxd2 0-0 16. Nb3 a5 17. Qc1 Be6 18. Nd2 Rfb8 19. Bb5 a4 20. Ra1 Bd7 21. Bxd7 Qxd7 22. Nc4 Qb5 23. Na3 Qc6 24. f3 b5 25. Qd2 b4 26. Nb1 a3 27. Qc1 a2 28. Nd2 d3 29. cxd3 Qxc1 30. Rfxc1 b3 31. Nxb3 Rxb3 32. Rxa2 Rab8 33. Rac2 Kf8 34. Rc5 Nd7 35. Rd5 Ke8 36. Rc7 Rb1+ 37. Kf2 R8b2+ 38. Kg3 Rg1 39. h3 Rgxg2+ 40. Kh4 g5+ 41. Kh5 Nf6+ 42. Kh6 Nxd5 43. exd5 Rb6+ 44. Kg7 Rg6+ 45. Kh8 Ra2 46. Rc8+ Kd7 47. Rf8 Ke7 48. Rb8 Ra7 49. Rc8 Rd7 50. Ra8 Rd8+ 51. Rxd8 Kxd8 52. Kxh7 Ke8 53. Kh8 Kf8 54. Kh7 Ke7 55. Kh8 Kd6 56. Kh7 Kxd5 57. Kh8 Kd4 58. Kh7 Kxd3 59. Kh8 Ke3 60. Kh7 Kxf3 61. Kh8 e4 62. Kh7 e3 63. Kh8 e2 64. Kh7 e1Q 65. Kh8 Qh4# 0-1

