[Event "Perth op"]
[Site "Perth"]
[Date "2023.01.06"]
[Round "7"]
[White "Milner, Anthony James"]
[Black "De Jong, Sjef"]
[Result "0-1"]
[ECO "B00"]
[WhiteElo "1102"]
[BlackElo "1593"]
[PlyCount "42"]
[EventDate "2023.01.02"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "AUS"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 e6 2. Nc3 Nc6 3. Nf3 Nf6 4. Bc4 d5 5. exd5 exd5 6. Bb3 Be7 7. h3 0-0 8. d4 h6 9. 0-0 Be6 10. Bf4 a6 11. Re1 Re8 12. a3 Na5 13. Ba2 Nc4 14. Bxc4 dxc4 15. Qd2 Nd5 16. Nxd5 Bxd5 17. Re3 Bxf3 18. Rxf3 g5 19. Rg3 Kh7 20. c3 gxf4 21. Qxf4 Qd5 0-1

[Event "Perth op"]
[Site "Perth"]
[Date "2023.01.05"]
[Round "5"]
[White "De Jong, Sjef"]
[Black "Balavignan, Ashvin"]
[Result "1/2-1/2"]
[ECO "B80"]
[WhiteElo "1593"]
[PlyCount "105"]
[EventDate "2023.01.02"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "AUS"]
[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 a6 6. Bd3 e6 7. Be3 b5 8. a3 Be7 9. 0-0 Bb7 10. f3 Nbd7 11. Nb3 Nc5 12. Rc1 Nxb3 13. cxb3 Rc8 14. Qd2 d5 15. exd5 Nxd5 16. Nxd5 Bxd5 17. b4 0-0 18. Rxc8 Qxc8 19. Rc1 Qb7 20. Qc2 h6 21. Bh7+ Kh8 22. Be4 Bxe4 23. fxe4 Ra8 24. b3 a5 25. bxa5 Rxa5 26. a4 bxa4 27. bxa4 Qb4 28. Bd2 Qd4+ 29. Kf1 Rxa4 30. Re1 Qc4+ 31. Qxc4 Rxc4 32. Kf2 Bb4 33. Bxb4 Rxb4 34. g4 f5 35. exf5 exf5 36. Re8+ Kh7 37. gxf5 Rf4+ 38. Kg3 Rxf5 39. Kg4 Rg5+ 40. Kf4 Kg6 41. Re3 Rf5+ 42. Kg4 h5+ 43. Kh4 Rf4+ 44. Kh3 Rf6 45. Kh4 Kh6 46. Re5 g6 47. h3 g5+ 48. Kg3 h4+ 49. Kg2 Rg6 50. Kf2 Rf6+ 51. Kg2 Rg6 52. Kf2 Rf6+ 53. Kg2 1/2-1/2

[Event "Perth op"]
[Site "Perth"]
[Date "2023.01.05"]
[Round "6"]
[White "Kerr, Carter"]
[Black "De Jong, Sjef"]
[Result "1-0"]
[ECO "C02"]
[BlackElo "1593"]
[PlyCount "97"]
[EventDate "2023.01.02"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "AUS"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. Be2 Bd7 7. 0-0 cxd4 8. cxd4 Nge7 9. Nc3 Nf5 10. Na4 Qd8 11. Bg5 Be7 12. Bxe7 Ncxe7 13. Nc5 Bc6 14. Qd2 b6 15. Nd3 Ng6 16. Rac1 Bd7 17. Nb4 Nfe7 18. Na6 Nc6 19. Bb5 Rc8 20. Bxc6 Bxc6 21. Nb4 Bd7 22. Rxc8 Qxc8 23. Rc1 Qb7 24. Qc3 0-0 25. Qa3 Rc8 26. Rxc8+ Qxc8 27. h3 a5 28. Nd3 Bb5 29. Nde1 Qc7 30. Qe3 Qe7 31. Qc3 Qd7 32. Ng5 h6 33. Ngf3 Ne7 34. Qb3 Qc6 35. Kh2 a4 36. Qa3 Be2 37. Qxe7 b5 38. Qd8+ Kh7 39. Qe7 Qc1 40. Qxf7 Qxb2 41. Qxe6 Qxa2 42. Qf5+ Kg8 43. e6 b4 44. e7 Bb5 45. Qe6+ Kh7 46. Nh4 Qc4 47. Qg6+ Kg8 48. Nf5 Qc7+ 49. g3 1-0

[Event "Perth op"]
[Site "Perth"]
[Date "2023.01.04"]
[Round "4"]
[White "Brown, Greg"]
[Black "De Jong, Sjef"]
[Result "1-0"]
[ECO "A36"]
[WhiteElo "1312"]
[BlackElo "1593"]
[PlyCount "119"]
[EventDate "2023.01.02"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "AUS"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. c4 c5 2. g3 Nc6 3. Bg2 Nf6 4. Nc3 d6 5. e3 Rb8 6. Nge2 Bd7 7. d4 cxd4 8. exd4 Bf5 9. 0-0 e6 10. Re1 Qc8 11. d5 Nd8 12. b3 a6 13. Nd4 g6 14. Nxf5 gxf5 15. Bh3 Be7 16. dxe6 fxe6 17. Bg2 b5 18. Qd3 b4 19. Ne2 e5 20. Be3 Qd7 21. Rad1 h5 22. h4 Nf7 23. Bh3 e4 24. Qd2 Ne5 25. Bg2 Nd3 26. Rf1 d5 27. Bf4 Rd8 28. Nc1 dxc4 29. Nxd3 cxd3 30. f3 Nd5 31. fxe4 fxe4 32. Bxe4 Nc3 33. Bg6+ Kf8 34. Be5+ Kg8 35. Bf7+ Kh7 36. Bxc3 Bc5+ 37. Kh2 bxc3 38. Qxc3 Rhf8 39. Qxc5 Rxf7 40. Qxh5+ Kg8 41. Rxf7 Qxf7 42. Qxf7+ Kxf7 43. Kg2 Kf6 44. g4 Ke5 45. Kf3 Kd4 46. g5 Kc3 47. Kg4 Kc2 48. Rh1 d2 49. h5 d1Q+ 50. Rxd1 Rxd1 51. h6 Rd4+ 52. Kf5 Rd5+ 53. Kf6 Rd6+ 54. Kg7 Rd7+ 55. Kg6 Rd6+ 56. Kh5 Rd2 57. h7 Kb2 58. g6 Kxa2 59. Kh6 Rd8 60. g7 1-0

[Event "Perth op"]
[Site "Perth"]
[Date "2023.01.03"]
[Round "2"]
[White "Arthur, Matthew"]
[Black "De Jong, Sjef"]
[Result "1/2-1/2"]
[ECO "D10"]
[WhiteElo "1605"]
[BlackElo "1593"]
[PlyCount "46"]
[EventDate "2023.01.02"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "AUS"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 Bf5 5. cxd5 cxd5 6. Qb3 Qd7 7. Nf3 a6 8. Ne5 Qc8 9. Nxd5 Nxd5 10. Qxd5 e6 11. Qb3 Nd7 12. Nxd7 Qxd7 13. Be2 Be4 14. 0-0 Bd6 15. Bd2 0-0 16. Bb4 Bxb4 17. Qxb4 Rac8 18. Rac1 Rc7 19. Rxc7 Qxc7 20. Qc3 Rc8 21. Rc1 Qxc3 22. Rxc3 Rxc3 23. bxc3 b5 1/2-1/2

[Event "Perth op"]
[Site "Perth"]
[Date "2023.01.03"]
[Round "3"]
[White "De Jong, Sjef"]
[Black "Sheridan, Wallace"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "1593"]
[BlackElo "1461"]
[PlyCount "92"]
[EventDate "2023.01.02"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "AUS"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. dxe5 dxe5 5. Qxd8+ Kxd8 6. Bc4 Ke8 7. Nf3 Bd6 8. Ng5 Rf8 9. 0-0 h6 10. Nf3 a6 11. a4 Nbd7 12. Re1 Nc5 13. b4 Ne6 14. Na2 Bd7 15. Bb3 Bc6 16. c4 b6 17. Bb2 Nd7 18. Rac1 Ke7 19. g3 Ng5 20. Nxg5 hxg5 21. f3 Bb7 22. Re2 f6 23. Rd2 a5 24. Rcd1 axb4 25. Nxb4 Nc5 26. Bc2 Nxa4 27. Bxa4 Rxa4 28. Nd5+ Bxd5 29. cxd5 Ra2 30. Rc2 Rfa8 31. Rdd2 Kd7 32. Kg2 Ba3 33. Kh3 Rxb2 34. Rxb2 Bxb2 35. Rxb2 Ra3 36. Kg4 g6 37. f4 gxf4 38. gxf4 Ra4 39. Re2 exf4 40. Kxf4 f5 41. Kg5 Rxe4 42. Rg2 Rg4+ 43. Rxg4 fxg4 44. Kxg6 b5 45. Kg5 b4 46. Kxg4 b3 0-1

[Event "Perth op"]
[Site "Perth"]
[Date "2023.01.02"]
[Round "1"]
[White "De Jong, Sjef"]
[Black "Wallis, Christopher"]
[Result "0-1"]
[ECO "C56"]
[BlackElo "2313"]
[PlyCount "62"]
[EventDate "2023.01.02"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "AUS"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 exd4 5. 0-0 Nxe4 6. Re1 d5 7. Bxd5 Qxd5 8. Nc3 Qd7 9. Nxe4 Be7 10. Bg5 0-0 11. c3 Bxg5 12. Nfxg5 h6 13. Nf3 dxc3 14. Nxc3 Qxd1 15. Raxd1 Be6 16. Nb5 Rad8 17. Nxc7 Rxd1 18. Rxd1 Bxa2 19. Nb5 Be6 20. h3 a6 21. Nc7 Rd8 22. Rxd8+ Nxd8 23. Nxe6 Nxe6 24. Ne5 Kf8 25. Nc4 Ke7 26. Kf1 Nf4 27. h4 b5 28. Na5 Kd6 29. g3 Nd3 30. b3 Kc7 31. Ke2 Nb4 0-1

