[Event "RSA-ch"]
[Site "Cape Town"]
[Date "2024.04.02"]
[Round "11"]
[White "Karsten, Jan"]
[Black "Klaasen, Calvin Jong"]
[Result "1-0"]
[ECO "C92"]
[WhiteElo "2323"]
[BlackElo "2155"]
[PlyCount "71"]
[EventDate "2024.03.25"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "RSA"]
[SourceTitle "CB14_2024"]
[SourceDate "2024.04.01"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 0-0 9. h3 Bb7 10. d4 Re8 11. Ng5 Rf8 12. Nf3 Re8 13. Nbd2 Bf8 14. Bc2 h6 15. a4 exd4 16. cxd4 Nb4 17. Bb1 c5 18. d5 Nd7 19. Ra3 c4 20. Nd4 Qf6 21. N2f3 Nc5 22. axb5 axb5 23. Nxb5 Rxa3 24. Nxa3 Nbd3 25. Bxd3 Nxd3 26. Re3 Nxb2 27. Bxb2 Qxb2 28. Nxc4 Qa2 29. Nfd2 Qa7 30. Ra3 Qc5 31. Qb1 Rb8 32. Rb3 Qc7 33. Rb5 Ba6 34. Rxb8 Bxc4 35. Rxf8+ Kxf8 36. Qc1 1-0

[Event "RSA-ch"]
[Site "Cape Town"]
[Date "2024.04.01"]
[Round "10"]
[White "Klaasen, Calvin Jong"]
[Black "Mnguni, Jacob Dumisani"]
[Result "1/2-1/2"]
[ECO "C43"]
[WhiteElo "2155"]
[BlackElo "2134"]
[PlyCount "34"]
[EventDate "2024.03.25"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "RSA"]
[SourceTitle "CB14_2024"]
[SourceDate "2024.04.01"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. Nxe5 Nd6 6. 0-0 Be7 7. Nc3 c6 8. Ne2 0-0 9. c3 Nd7 10. Qc2 Nf6 11. Ng3 Be6 12. Bg5 h6 13. Bd2 Re8 14. Rae1 Bf8 15. f3 Rc8 16. Kh1 b6 17. Qb1 c5 1/2-1/2

[Event "RSA-ch"]
[Site "Cape Town"]
[Date "2024.03.31"]
[Round "9"]
[White "Barrish, Daniel"]
[Black "Klaasen, Calvin Jong"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2218"]
[BlackElo "2155"]
[PlyCount "43"]
[EventDate "2024.03.25"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "RSA"]
[SourceTitle "CB14_2024"]
[SourceDate "2024.04.01"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.01"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 Be7 5. Bf4 0-0 6. e3 b6 7. Bd3 dxc4 8. Bxc4 Bb7 9. 0-0 a6 10. Qe2 Nbd7 11. Rfd1 b5 12. Bd3 Rc8 13. e4 c5 14. e5 Nd5 15. Qe4 g6 16. Bh6 Nxc3 17. Qxb7 Nxd1 18. Bxf8 Kxf8 19. Rxd1 c4 20. Be2 Nb6 21. Qxa6 b4 22. Qb5 1/2-1/2

[Event "RSA-ch"]
[Site "Cape Town"]
[Date "2024.03.31"]
[Round "8"]
[White "Klaasen, Calvin Jong"]
[Black "Levitan, Caleb Levi"]
[Result "1/2-1/2"]
[ECO "C45"]
[WhiteElo "2155"]
[BlackElo "2235"]
[PlyCount "29"]
[EventDate "2024.03.25"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "RSA"]
[SourceTitle "CB14_2024"]
[SourceDate "2024.04.01"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Qf6 5. Nxc6 Bc5 6. Qf3 dxc6 7. Bc4 Qg6 8. Nc3 Be6 9. Bxe6 Qxe6 10. Be3 Bxe3 11. Qxe3 Nf6 12. Rd1 0-0 13. 0-0 b6 14. f3 Rfd8 15. Qf4 1/2-1/2

[Event "RSA-ch"]
[Site "Cape Town"]
[Date "2024.03.30"]
[Round "7"]
[White "Kobese, Watu"]
[Black "Klaasen, Calvin Jong"]
[Result "1/2-1/2"]
[ECO "B33"]
[WhiteElo "2268"]
[BlackElo "2155"]
[PlyCount "57"]
[EventDate "2024.03.25"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "RSA"]
[SourceTitle "CB14_2024"]
[SourceDate "2024.04.01"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Bxf6 gxf6 10. Nd5 f5 11. Bd3 Be6 12. Qh5 Rg8 13. 0-0-0 Rxg2 14. Ne3 Rg5 15. Qxh7 f4 16. Nd5 Rg6 17. Rhg1 Rh6 18. Qg8 Bxd5 19. exd5 Ne7 20. Qg2 Qd7 21. c4 Rc8 22. Nb1 Qh3 23. Qxh3 Rxh3 24. Nc3 bxc4 25. Bc2 f5 26. Rg5 Bh6 27. Rxf5 Nxf5 28. Bxf5 Rxc3+ 29. bxc3 1/2-1/2

[Event "RSA-ch"]
[Site "Cape Town"]
[Date "2024.03.29"]
[Round "6"]
[White "Klaasen, Calvin Jong"]
[Black "Cawdery, Daniel"]
[Result "1/2-1/2"]
[ECO "B36"]
[WhiteElo "2155"]
[BlackElo "2380"]
[PlyCount "34"]
[EventDate "2024.03.25"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "RSA"]
[SourceTitle "CB14_2024"]
[SourceDate "2024.04.01"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Nc6 5. c4 Nf6 6. Nc3 d6 7. Be2 Nxd4 8. Qxd4 Bg7 9. Be3 0-0 10. Qd2 a5 11. f3 a4 12. Rc1 Be6 13. Rc2 Qa5 14. Nd5 Bxd5 15. cxd5 Nd7 16. Qxa5 Rxa5 17. Kd2 Nc5 1/2-1/2

[Event "RSA-ch"]
[Site "Cape Town"]
[Date "2024.03.29"]
[Round "5"]
[White "Mfazwe, Lutho"]
[Black "Klaasen, Calvin Jong"]
[Result "0-1"]
[ECO "D58"]
[WhiteElo "1956"]
[BlackElo "2155"]
[PlyCount "82"]
[EventDate "2024.03.25"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "RSA"]
[SourceTitle "CB14_2024"]
[SourceDate "2024.04.01"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.01"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Be7 5. Bg5 h6 6. Bh4 0-0 7. e3 b6 8. Bd3 Bb7 9. 0-0 Nbd7 10. Re1 c5 11. e4 cxd4 12. Nxd4 dxe4 13. Nxe4 Nxe4 14. Bxe7 Nxf2 15. Bxd8 Nxd1 16. Be7 Nxb2 17. Bxf8 Nxd3 18. Re3 N3e5 19. Be7 Nxc4 20. Rc3 Bd5 21. Rac1 Nde5 22. Bh4 a6 23. a4 Nb2 24. Ra1 Nec4 25. Bf2 Rd8 26. Rb3 Be4 27. Rc3 Rd5 28. Re1 Bg6 29. Nc6 Rd7 30. Nb8 Rb7 31. Nxa6 Ra7 32. Nb8 Rxa4 33. Rb3 Nd3 34. Rd1 Ra2 35. Bxb6 Be4 36. Bf2 Rxf2 37. Rbxd3 Rxg2+ 38. Kf1 Rxh2 39. Rd8+ Kh7 40. R1d4 Ne3+ 41. Ke1 Nc2+ 0-1

[Event "RSA-ch"]
[Site "Cape Town"]
[Date "2024.03.28"]
[Round "4"]
[White "Klaasen, Calvin Jong"]
[Black "Mhango, Banele"]
[Result "1/2-1/2"]
[ECO "E73"]
[WhiteElo "2155"]
[BlackElo "2193"]
[PlyCount "88"]
[EventDate "2024.03.25"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "RSA"]
[SourceTitle "CB14_2024"]
[SourceDate "2024.04.01"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 0-0 6. Be3 c5 7. d5 Qa5 8. Qd2 a6 9. a4 e6 10. Ra3 exd5 11. exd5 Re8 12. h3 Bf5 13. Nf3 Qb4 14. a5 b5 15. axb6 Qxb6 16. Na4 Qd8 17. 0-0 a5 18. Nc3 Na6 19. Bd3 Bxd3 20. Qxd3 Nb4 21. Qd2 Ne4 22. Nxe4 Rxe4 23. Rc1 Qf6 24. Rcc3 Qf5 25. Rc1 Bf6 26. b3 Bg7 27. Ra4 Ree8 28. Ra3 Qf6 29. Ra4 Qf5 30. Ra3 Qe4 31. Ra4 Bf6 32. Ra3 Nd3 33. Rd1 Nb4 34. Rc1 Qd3 35. Qxd3 Nxd3 36. Rd1 Nb4 37. Ne1 Bc3 38. Ra4 Bxe1 39. Rxe1 Nc2 40. Re2 Nxe3 41. Rxe3 Rxe3 42. fxe3 Kg7 43. Kf2 Kf6 44. g4 Ke5 1/2-1/2

[Event "RSA-ch"]
[Site "Cape Town"]
[Date "2024.03.27"]
[Round "3"]
[White "Khumalo, Keith"]
[Black "Klaasen, Calvin Jong"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "2079"]
[BlackElo "2155"]
[PlyCount "110"]
[EventDate "2024.03.25"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "RSA"]
[SourceTitle "CB14_2024"]
[SourceDate "2024.04.01"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.01"]
[SourceQuality "1"]

1. d4 d5 2. Nc3 Nf6 3. Bf4 a6 4. e3 e6 5. Bd3 c5 6. dxc5 Bxc5 7. Nf3 Nbd7 8. 0-0 b5 9. Ne5 Bb7 10. Qf3 Nxe5 11. Bxe5 Bd6 12. Qf4 Bxe5 13. Qxe5 0-0 14. a4 b4 15. Ne2 Qb8 16. Qg5 h6 17. Qh4 e5 18. Bf5 Bc8 19. Ng3 Qd6 20. Rfd1 Bxf5 21. Nxf5 Qe6 22. Qh3 Rfc8 23. e4 d4 24. Rd3 Nxe4 25. Qg4 g6 26. Nxh6+ Kg7 27. Qxe4 Kxh6 28. Re1 Kg7 29. h4 Re8 30. c3 bxc3 31. bxc3 dxc3 32. Rxc3 Rad8 33. Rc4 Qd5 34. Qe2 Re6 35. Re4 Rde8 36. h5 Qc6 37. Qb2 Qd5 38. Qe2 R8e7 39. Rd1 Qc6 40. Rc4 Qa8 41. Rdc1 Qd5 42. Rc5 Qd4 43. R5c4 Qd5 44. Rc8 e4 45. R1c5 Qd4 46. Qg4 Rd7 47. Rc1 e3 48. Qxd4+ Rxd4 49. fxe3 Rxa4 50. hxg6 Kxg6 51. Kf2 Rf6+ 52. Kg3 Kg7 53. R1c6 Re4 54. Rxf6 Kxf6 55. Kf3 Ra4 1/2-1/2

[Event "RSA-ch"]
[Site "Cape Town"]
[Date "2024.03.26"]
[Round "2"]
[White "Klaasen, Calvin Jong"]
[Black "Mnyasta, Charlton"]
[Result "0-1"]
[ECO "B88"]
[WhiteElo "2155"]
[BlackElo "2123"]
[PlyCount "76"]
[EventDate "2024.03.25"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "RSA"]
[SourceTitle "CB14_2024"]
[SourceDate "2024.04.01"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 e6 7. 0-0 a6 8. Bb3 Qc7 9. Be3 Bd7 10. f4 Na5 11. Qf3 Be7 12. Rae1 Nxb3 13. cxb3 Rc8 14. Bf2 0-0 15. e5 Ne8 16. Kh1 b5 17. a3 dxe5 18. fxe5 f6 19. exf6 Rxf6 20. Qe3 Nd6 21. Bg3 Qc5 22. Rxf6 Bxf6 23. Be5 Bh4 24. g3 Be7 25. Bf4 Nf7 26. b4 Qh5 27. Qe2 Qh3 28. Qg2 e5 29. Qxh3 Bxh3 30. Nf3 Bxb4 31. axb4 exf4 32. gxf4 Kf8 33. Re4 Nd6 34. Rd4 Nc4 35. Ne5 Nxb2 36. Ne2 Rc2 37. Re4 Bf5 38. Re3 Nd1 0-1

[Event "RSA-ch"]
[Site "Cape Town"]
[Date "2024.03.25"]
[Round "1"]
[White "Klaasen, Calvin Jong"]
[Black "Simpson, Michael"]
[Result "1-0"]
[ECO "B92"]
[WhiteElo "2155"]
[BlackElo "2093"]
[PlyCount "89"]
[EventDate "2024.03.25"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "RSA"]
[SourceTitle "CB14_2024"]
[SourceDate "2024.04.01"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.01"]
[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. Be3 Be6 10. Re1 Nbd7 11. a4 Nc5 12. Nxc5 dxc5 13. a5 Qc7 14. Nd5 Nxd5 15. exd5 Rad8 16. c4 f5 17. f3 Bc8 18. Qd2 f4 19. Bf2 Rf6 20. Bd3 Rh6 21. Qc2 Bd6 22. b4 Qf7 23. bxc5 Bb8 24. h3 Qh5 25. Kf1 Qg5 26. Be4 Ba7 27. Rab1 Bxh3 28. gxh3 Rxh3 29. Rb6 Rh2 30. Ke2 Bxb6 31. axb6 Qe7 32. d6 Qd7 33. Qd1 Kf8 34. Rh1 Rxh1 35. Qxh1 Qa4 36. Qc1 a5 37. Qc2 Qd7 38. Bxh7 g5 39. Bf5 Qf7 40. Be4 Ra8 41. Bd5 Qf6 42. Qh7 Qg7 43. Qf5+ Ke8 44. c6 a4 45. d7+ 1-0

[Event "Kimberley Moja op"]
[Site "Kimberley"]
[Date "2023.10.04"]
[Round "9"]
[White "Nevin, Tyler"]
[Black "Klaasen, Calvin Jong"]
[Result "1-0"]
[ECO "E33"]
[WhiteElo "1815"]
[BlackElo "2209"]
[PlyCount "25"]
[EventDate "2023.09.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RSA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 Nc6 4. Nc3 Bb4 5. Bg5 h6 6. Bd2 0-0 7. Qc2 d6 8. Rd1 Qe7 9. e4 e5 10. dxe5 Bxc3 11. Bxc3 dxe5 12. Be2 Bg4 13. 0-0 1-0

[Event "Kimberley Moja op"]
[Site "Kimberley"]
[Date "2023.10.03"]
[Round "7"]
[White "Klaasen, Calvin Jong"]
[Black "Simpson, Michael"]
[Result "0-1"]
[ECO "A17"]
[WhiteElo "2209"]
[BlackElo "2077"]
[PlyCount "60"]
[EventDate "2023.09.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RSA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. c4 e6 2. Nf3 d5 3. e3 Nf6 4. Nc3 b6 5. b3 Bb7 6. Bb2 Nbd7 7. Be2 a6 8. 0-0 Bd6 9. cxd5 exd5 10. d4 0-0 11. Rc1 Re8 12. Qc2 Rc8 13. Rfd1 Qe7 14. Bf1 c5 15. dxc5 bxc5 16. Qf5 g6 17. Qh3 h5 18. Rd2 Ne5 19. Nxe5 Bxe5 20. Qh4 d4 21. exd4 cxd4 22. Ne2 Rxc1 23. Nxc1 Qd6 24. Nd3 Ne4 25. Re2 Nc3 26. Re1 Kg7 27. Nxe5 Rxe5 28. Qg3 Rxe1 29. Bxc3 Qxg3 30. Bxd4+ Qe5 0-1

[Event "Kimberley Moja op"]
[Site "Kimberley"]
[Date "2023.10.02"]
[Round "6"]
[White "Bouah, Lyndon"]
[Black "Klaasen, Calvin Jong"]
[Result "1/2-1/2"]
[ECO "E43"]
[WhiteElo "1996"]
[BlackElo "2209"]
[PlyCount "97"]
[EventDate "2023.09.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RSA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Bd3 Bb7 6. f3 c5 7. Nge2 cxd4 8. exd4 0-0 9. a3 Bxc3+ 10. Nxc3 d5 11. 0-0 dxc4 12. Bxc4 Nc6 13. Be3 Rc8 14. Bd3 Qd7 15. Bb5 Nd5 16. Nxd5 Qxd5 17. Bxc6 Bxc6 18. Qd2 Rfd8 19. Qf2 f6 20. Rfe1 Bb5 21. Rac1 Bc4 22. Qg3 Kf7 23. Rc3 Rc6 24. Rec1 Rdc8 25. Qe1 a5 26. Qd2 a4 27. Qc2 Qb5 28. Qd2 h6 29. Qf2 Qd5 30. Qd2 b5 31. R3c2 g5 32. Qf2 Rg8 33. Bd2 Rd6 34. Bc3 Rd7 35. Re1 Rg6 36. Rd2 Qb7 37. Qe3 Bd5 38. Rf2 Rd8 39. g3 Qd7 40. Rd1 Rc8 41. Re1 h5 42. Bb4 Rc4 43. Bc3 Bc6 44. Rd2 g4 45. d5 Bxd5 46. f4 f5 47. Qe5 Qa7+ 48. Bd4 Qa8 49. Bc3 1/2-1/2

[Event "Kimberley Moja op"]
[Site "Kimberley"]
[Date "2023.10.02"]
[Round "5"]
[White "Klaasen, Calvin Jong"]
[Black "Mhango, Banele"]
[Result "0-1"]
[ECO "E61"]
[WhiteElo "2209"]
[BlackElo "2230"]
[PlyCount "78"]
[EventDate "2023.09.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RSA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. c4 c5 2. Nf3 g6 3. d4 Bg7 4. e3 Nf6 5. Nc3 0-0 6. d5 d6 7. Be2 e5 8. e4 Na6 9. Bg5 h6 10. Bh4 Nc7 11. Nd2 Bd7 12. Qc2 Qe8 13. Rb1 Nh7 14. f3 h5 15. b4 cxb4 16. Rxb4 b6 17. Nb5 Na6 18. Rb1 Bxb5 19. Rxb5 Bh6 20. Bf2 Nf6 21. 0-0 Rc8 22. Bd3 Qxb5 23. cxb5 Rxc2 24. Bxc2 Nb4 25. Bb1 Bxd2 26. a3 Nbxd5 27. exd5 Rc8 28. a4 Bb4 29. f4 exf4 30. Bh4 Ng4 31. Be4 Rc4 32. Bf3 Ne3 33. Rb1 Bc5 34. Kh1 Rxa4 35. h3 Nf5 36. Be1 Nd4 37. Bd1 Ra3 38. Bf2 Nxb5 39. Be1 Nd4 0-1

[Event "Kimberley Moja op"]
[Site "Kimberley"]
[Date "2023.10.01"]
[Round "3"]
[White "Klaasen, Calvin Jong"]
[Black "Dinham, James"]
[Result "1-0"]
[ECO "D96"]
[WhiteElo "2209"]
[BlackElo "1886"]
[PlyCount "89"]
[EventDate "2023.09.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RSA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. Qb3 Nb6 6. d4 Bg7 7. e4 c6 8. Be3 Be6 9. Qc2 0-0 10. Rd1 Nc4 11. Bc1 Nb6 12. h3 N8d7 13. b3 Re8 14. Be2 Qc7 15. 0-0 Rad8 16. Be3 Nf8 17. Qc1 Qc8 18. Rd2 f5 19. Ng5 h6 20. Nf3 fxe4 21. Nxe4 Bd5 22. Nc3 Bf7 23. Ne5 Be6 24. Rdd1 Kh7 25. Rfe1 Nfd7 26. f4 Nxe5 27. dxe5 Qb8 28. Bf3 Nd5 29. Nxd5 Bxd5 30. Bxd5 cxd5 31. Qb1 e6 32. Re2 Rc8 33. Bd4 Bf8 34. g4 Bc5 35. f5 exf5 36. gxf5 Rxe5 37. fxg6+ Kg8 38. Rg2 Bxd4+ 39. Rxd4 Rce8 40. Rd1 Qd6 41. Rf1 R8e7 42. Qc1 Re3 43. Qc8+ Re8 44. Qf5 Rf8 45. Qf7+ 1-0

[Event "Kimberley Moja op"]
[Site "Kimberley"]
[Date "2023.10.01"]
[Round "4"]
[White "Kobese, Watu"]
[Black "Klaasen, Calvin Jong"]
[Result "1/2-1/2"]
[ECO "C02"]
[WhiteElo "2305"]
[BlackElo "2209"]
[PlyCount "51"]
[EventDate "2023.09.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RSA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Bd7 6. Bd3 cxd4 7. 0-0 dxc3 8. Nxc3 Nge7 9. Bg5 a6 10. Re1 h6 11. Bh4 g5 12. Bg3 Ng6 13. Qb1 Rg8 14. a3 Be7 15. b4 g4 16. Bxg6 Rxg6 17. Nd2 h5 18. Qd3 Bg5 19. Ne2 Ne7 20. f4 gxf3 21. Nxf3 Bb5 22. Qb3 Nf5 23. Bf2 Bc4 24. Qb2 h4 25. Ned4 Nxd4 26. Qxd4 1/2-1/2

[Event "Kimberley Moja op"]
[Site "Kimberley"]
[Date "2023.09.30"]
[Round "2"]
[White "Teeke, Karabo"]
[Black "Klaasen, Calvin Jong"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1776"]
[BlackElo "2209"]
[PlyCount "118"]
[EventDate "2023.09.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RSA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d5 2. Nc3 Nf6 3. Bf4 a6 4. e3 e6 5. Nf3 Nbd7 6. Be2 c5 7. Ne5 Nxe5 8. Bxe5 Nd7 9. Bf4 cxd4 10. exd4 Be7 11. Qd3 Bf6 12. 0-0-0 b5 13. g4 Bb7 14. Rhg1 h6 15. Qe3 b4 16. Nb1 Qb6 17. g5 hxg5 18. Bxg5 Rc8 19. Bxf6 gxf6 20. h3 a5 21. Rg3 Ba6 22. Bxa6 Qxa6 23. Qd3 Qxd3 24. Rdxd3 Ke7 25. Nd2 Nb8 26. Nb3 Nc6 27. c3 bxc3 28. bxc3 Rh4 29. Kd1 f5 30. Nc5 Ne5 31. Rd2 f4 32. Rg7 Kf6 33. Rg2 Nc4 34. Rc2 Rxh3 35. Rc1 Rch8 36. Kc2 Rh1 37. Rxh1 Rxh1 38. Rg4 Kf5 39. Rg7 f6 40. Re7 Re1 41. Nd7 Re2+ 42. Kd1 f3 43. Rf7 Nb2+ 44. Kc1 Nd3+ 45. Kb1 Rb2+ 46. Ka1 Rxf2 47. Rxf6+ Kg5 48. a3 Nf4 49. Rf8 Re2 50. Rg8+ Kh4 51. Ne5 Rxe5 52. dxe5 f2 53. Rh8+ Kg3 54. Rh1 Kg2 55. Rd1 f1Q 56. Rxf1 Kxf1 57. Kb2 Nd3+ 58. Kb3 Nxe5 59. Ka4 Nc4 0-1

[Event "Cape Town CKC"]
[Site "Cape Town"]
[Date "2023.06.11"]
[Round "5"]
[White "Karsten, Jan"]
[Black "Klaasen, Calvin Jong"]
[Result "1/2-1/2"]
[ECO "C95"]
[WhiteElo "2252"]
[BlackElo "2211"]
[PlyCount "123"]
[EventDate "2023.06.09"]
[EventType "tourn"]
[EventRounds "5"]
[EventCountry "RSA"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 0-0 9. h3 Re8 10. Ng5 Rf8 11. Nf3 Re8 12. d4 Bf8 13. Nbd2 Bb7 14. Bc2 Nb8 15. a4 Nbd7 16. b3 g6 17. Bd3 c6 18. Nf1 d5 19. Nxe5 dxe4 20. Nxd7 Qxd7 21. Bc2 Nd5 22. Bd2 f5 23. b4 Kh8 24. Bb3 Qd6 25. Qc1 Bg7 26. Bxd5 cxd5 27. Bf4 Qc6 28. axb5 axb5 29. Qb2 Bf6 30. Qd2 Ra4 31. Qe3 Rc8 32. Rxa4 bxa4 33. Rc1 Ba6 34. Nd2 Bd3 35. Be5 a3 36. Qg5 Bxe5 37. dxe5 Qe6 38. Nb3 Qxe5 39. Ra1 Ra8 40. Qc1 a2 41. Qb2 Bb1 42. Nd2 Rc8 43. Nxb1 axb1Q+ 44. Rxb1 Qxc3 45. Qxc3+ Rxc3 46. Rd1 Rb3 47. Rxd5 Rxb4 48. g3 Rb7 49. h4 Rf7 50. Re5 Kg7 51. Kg2 Kf6 52. Ra5 Re7 53. Ra6+ Re6 54. Ra7 h6 55. Rh7 Re7 56. Rh8 Kg7 57. Ra8 Rf7 58. Re8 g5 59. hxg5 hxg5 60. g4 Kf6 61. gxf5 Kxf5 62. f3 1/2-1/2

[Event "Cape Town CKC"]
[Site "Cape Town"]
[Date "2023.06.11"]
[Round "4"]
[White "Klaasen, Calvin Jong"]
[Black "Rogov, Matfey"]
[Result "1-0"]
[ECO "C17"]
[WhiteElo "2211"]
[BlackElo "2041"]
[PlyCount "77"]
[EventDate "2023.06.09"]
[EventType "tourn"]
[EventRounds "5"]
[EventCountry "RSA"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. d4 e6 2. e4 d5 3. Nc3 Bb4 4. e5 c5 5. Bd2 Bxc3 6. Bxc3 Nc6 7. f4 Nge7 8. Nf3 Nf5 9. dxc5 Ne3 10. Qd3 d4 11. Bd2 Nxf1 12. Rxf1 b6 13. cxb6 Qxb6 14. Qa3 Ba6 15. Rf2 0-0-0 16. Ng5 d3 17. c3 Rhf8 18. Ne4 f6 19. exf6 gxf6 20. Nc5 Bb7 21. 0-0-0 Rfe8 22. Rf3 Rd5 23. Be3 e5 24. Nd7 Qd8 25. Nc5 Qb6 26. fxe5 Nxe5 27. Nd7 Qd8 28. Nxe5 Rdxe5 29. Rg3 Ra5 30. Qb4 Qd5 31. c4 Qf5 32. a3 Rae5 33. Rg7 Qe4 34. Bd2 Qc6 35. Bf4 a5 36. Qxb7+ Qxb7 37. Rxb7 d2+ 38. Kc2 Rc5 39. Rb8+ 1-0

[Event "Cape Town CKC"]
[Site "Cape Town"]
[Date "2023.06.10"]
[Round "3"]
[White "Boder, Jan"]
[Black "Klaasen, Calvin Jong"]
[Result "1/2-1/2"]
[ECO "B36"]
[WhiteElo "2294"]
[BlackElo "2211"]
[PlyCount "141"]
[EventDate "2023.06.09"]
[EventType "tourn"]
[EventRounds "5"]
[EventCountry "RSA"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Nf6 6. Nc3 d6 7. Be2 Nxd4 8. Qxd4 Bg7 9. Be3 0-0 10. Qd2 a5 11. f3 a4 12. Bd4 Qa5 13. g4 Be6 14. g5 Nd7 15. Bxg7 Kxg7 16. Nd5 Bxd5 17. Qxa5 Rxa5 18. cxd5 f5 19. gxf6+ Kxf6 20. Rc1 Rc5 21. Kd2 g5 22. h4 g4 23. fxg4 Ke5 24. Ke3 Rf4 25. Bf3 Nf6 26. Rxc5 dxc5 27. g5 Nxe4 28. g6 hxg6 29. h5 Ng3 30. hxg6 Nf5+ 31. Kf2 Kf6 32. Rg1 Kg7 33. Rg4 Rxg4 34. Bxg4 Kxg6 35. Kf3 Kf6 36. Kf4 Nd6 37. Bd7 a3 38. bxa3 Nc4 39. Ke4 Nxa3 40. Ba4 b5 41. Bd1 b4 42. Be2 c4 43. Bd1 c3 44. Kd3 Ke5 45. Bb3 c2 46. Kd2 Kd4 47. Kc1 Kc3 48. Ba4 Kc4 49. Bb3+ Kd4 50. Kd2 Kc5 51. Kc1 Kb5 52. Kd2 Kc5 53. Kc1 Nc4 54. Kxc2 Na5 55. d6 Kxd6 56. Bf7 Kc5 57. Be6 Nc6 58. Kb2 Nd4 59. Bg4 Nb5 60. Be6 Kd6 61. Bc4 Na3 62. Bd3 Kc5 63. Kb3 e5 64. Bg6 Nc4 65. Bh7 Nd2+ 66. Kc2 Nc4 67. Kb3 Nd2+ 68. Kc2 Nf3 69. Kb2 Nd4 70. a3 bxa3+ 71. Kxa3 1/2-1/2

[Event "Cape Town CKC"]
[Site "Cape Town"]
[Date "2023.06.10"]
[Round "2"]
[White "Klaasen, Calvin Jong"]
[Black "Barrish, Daniel"]
[Result "1/2-1/2"]
[ECO "E04"]
[WhiteElo "2211"]
[BlackElo "2231"]
[PlyCount "121"]
[EventDate "2023.06.09"]
[EventType "tourn"]
[EventRounds "5"]
[EventCountry "RSA"]
[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. g3 Bb4+ 5. Nbd2 dxc4 6. Bg2 c3 7. bxc3 Bxc3 8. Rb1 0-0 9. 0-0 Ba5 10. Nb3 Bb6 11. Ne5 c6 12. Nc4 Bc7 13. e4 b6 14. Qc2 a5 15. Rd1 Re8 16. Bg5 h6 17. Bxf6 Qxf6 18. d5 exd5 19. exd5 Bf5 20. Qb2 Bxb1 21. Qxb1 cxd5 22. Ne3 Ra7 23. Nxd5 Qg6 24. Qxg6 fxg6 25. Nd4 Be5 26. Nb5 Rd7 27. f4 Bf6 28. Bh3 Red8 29. Bxd7 Rxd7 30. Kf1 Kf7 31. Ke2 Bd8 32. Kf3 Na6 33. a3 Nc5 34. Nbc3 Ke6 35. g4 Bf6 36. f5+ gxf5 37. gxf5+ Kxf5 38. Nxb6 Rxd1 39. Nxd1 Bd4 40. Nc4 Nb7 41. h3 Kg5 42. Nde3 Bxe3 43. Nxe3 Nd6 44. a4 g6 45. Nd5 Nc4 46. Ne7 Kf6 47. Ng8+ Kg7 48. Ne7 Kf7 49. Nc6 Ke6 50. Ke4 Kd6 51. Nd4 Kc5 52. Nb3+ Kb4 53. Nxa5 Kxa5 54. Kd5 Nd2 55. Ke5 Nf3+ 56. Kf6 g5 57. Kg6 Ng1 58. Kxh6 Nxh3 59. Kh5 Kxa4 60. Kg4 Nf2+ 61. Kxg5 1/2-1/2

[Event "Cape Town CKC"]
[Site "Cape Town"]
[Date "2023.06.09"]
[Round "1"]
[White "Gatineau, Yovann"]
[Black "Klaasen, Calvin Jong"]
[Result "1-0"]
[ECO "D11"]
[WhiteElo "2362"]
[BlackElo "2211"]
[PlyCount "75"]
[EventDate "2023.06.09"]
[EventType "tourn"]
[EventRounds "5"]
[EventCountry "RSA"]
[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. g3 c6 4. Bg2 Bf5 5. 0-0 h6 6. c4 e6 7. Nc3 Nbd7 8. b3 Be7 9. Bb2 0-0 10. e3 Ne4 11. Nd2 Nxc3 12. Bxc3 a5 13. Qe2 Nf6 14. Rfd1 Bb4 15. Bxb4 axb4 16. e4 dxe4 17. Nxe4 Bxe4 18. Bxe4 Qb6 19. Rd2 Rfd8 20. Rad1 Nxe4 21. Qxe4 Rd7 22. h4 Rad8 23. Rd3 Qa6 24. R1d2 b5 25. d5 exd5 26. cxd5 c5 27. Rc2 Rc8 28. Rxc5 Rxc5 29. Qe8+ Kh7 30. Qxd7 Qxa2 31. Qf5+ Kg8 32. Re3 Qa1+ 33. Kg2 g6 34. Qe4 Rc1 35. d6 Rg1+ 36. Kh2 Qf1 37. Qf3 Qd1 38. d7 1-0

[Event "Africa-ch"]
[Site "Giza"]
[Date "2023.05.13"]
[Round "9"]
[White "Klaasen, Calvin Jong"]
[Black "Sadek, Sameh"]
[Result "1-0"]
[ECO "E04"]
[WhiteElo "2196"]
[BlackElo "2255"]
[PlyCount "75"]
[EventDate "2023.05.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "EGY"]
[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 dxc4 5. Bg2 a6 6. 0-0 b5 7. Ne5 Nd5 8. a4 Bb7 9. b3 cxb3 10. Qxb3 c6 11. axb5 cxb5 12. e4 Nf6 13. d5 exd5 14. exd5 Bd6 15. Nc6 Qc7 16. Re1+ Kf8 17. Ba3 Nbd7 18. Rc1 Ne8 19. Na5 Qb6 20. Nxb7 Qxb7 21. Bxd6+ Nxd6 22. Qb4 Qb8 23. Rc6 a5 24. Qxd6+ Qxd6 25. Rxd6 Ke7 26. Rc6 b4 27. d6+ Ke6 28. Nd2 a4 29. Rc4 Rab8 30. Rxa4 b3 31. Re4+ Kf6 32. Re1 Nc5 33. Ne4+ Nxe4 34. Bxe4 b2 35. Bb1 g5 36. h4 gxh4 37. Rxh4 Rhd8 38. Rf4+ 1-0

[Event "Africa-ch"]
[Site "Giza"]
[Date "2023.05.12"]
[Round "8"]
[White "Abdel Razik, Khaled"]
[Black "Klaasen, Calvin Jong"]
[Result "1-0"]
[ECO "E11"]
[WhiteElo "2384"]
[BlackElo "2196"]
[PlyCount "81"]
[EventDate "2023.05.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "EGY"]
[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 a5 6. Qc2 0-0 7. Bg2 c6 8. 0-0 Be7 9. Bf4 b6 10. Rd1 Nbd7 11. cxd5 cxd5 12. Nc3 Ba6 13. Ne5 Rc8 14. Qb3 Nxe5 15. Bxe5 Bc4 16. Qc2 b5 17. Qd2 b4 18. Bxf6 Bxf6 19. Na4 Bb5 20. Nc5 Be7 21. Qe3 Bxc5 22. dxc5 Qf6 23. Rd2 Rc7 24. a3 Bc4 25. axb4 axb4 26. Ra4 b3 27. Be4 Qe7 28. c6 Rfc8 29. Rxc4 dxc4 30. Qb6 f5 31. Bf3 Qe8 32. Rd6 Qe7 33. Rd4 c3 34. bxc3 Qa3 35. Rd7 Qc1+ 36. Kg2 b2 37. Rxc7 Rxc7 38. Qb8+ Kf7 39. Qxc7+ Kf6 40. Qb8 Qxc3 41. c7 1-0

[Event "Cape Town IM"]
[Site "Cape Town"]
[Date "2023.01.08"]
[Round "9"]
[White "Fawzy, Adham"]
[Black "Klaasen, Calvin Jong"]
[Result "1-0"]
[ECO "C88"]
[WhiteElo "2489"]
[BlackElo "2200"]
[PlyCount "81"]
[EventDate "2023.01.04"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "RSA"]
[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. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. h3 Bb7 9. d3 d6 10. a4 Na5 11. Ba2 c5 12. Bg5 Ne8 13. Bd2 b4 14. c3 Nc6 15. Be3 Nf6 16. Nbd2 h6 17. d4 bxc3 18. bxc3 exd4 19. cxd4 Nb4 20. Bb1 Re8 21. dxc5 dxc5 22. Ne5 Bf8 23. f4 Qc7 24. Qf3 Rxe5 25. fxe5 Qxe5 26. Ra3 Re8 27. Qf5 Qxf5 28. exf5 Bd5 29. Bf2 Rc8 30. Rc3 Nd7 31. a5 f6 32. Bg3 c4 33. Kh2 Bc5 34. Be4 Bf7 35. Bb7 Rf8 36. Re4 Ne5 37. Nxc4 Bxc4 38. Bxe5 fxe5 39. Rcxc4 Nd3 40. Bd5+ Kh7 41. Rc3 1-0

[Event "Cape Town IM"]
[Site "Cape Town"]
[Date "2023.01.07"]
[Round "7"]
[White "Karsten, Jan"]
[Black "Klaasen, Calvin Jong"]
[Result "0-1"]
[ECO "C78"]
[WhiteElo "2078"]
[BlackElo "2200"]
[PlyCount "126"]
[EventDate "2023.01.04"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "RSA"]
[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. Bb5 a6 4. Ba4 Nf6 5. 0-0 b5 6. Bb3 Bc5 7. c3 d6 8. d4 Bb6 9. Be3 0-0 10. Nbd2 h6 11. h3 Re8 12. Bc2 Bb7 13. d5 Ne7 14. Bxb6 cxb6 15. Re1 Ng6 16. Bd3 Bc8 17. Bf1 Nf4 18. Kh2 Nh7 19. g3 Ng6 20. c4 b4 21. a3 bxa3 22. Rxa3 f5 23. b4 Nf6 24. Qc2 fxe4 25. Nxe4 Bf5 26. Bd3 Bxe4 27. Bxe4 Nxe4 28. Qxe4 Nf8 29. Nh4 Ra7 30. Rf3 Ree7 31. c5 bxc5 32. bxc5 dxc5 33. d6 Re6 34. Qc4 Qxd6 35. Nf5 Qc6 36. Rfe3 Qb5 37. Qg4 c4 38. Rd1 Rg6 39. Qh4 Rf6 40. Qg4 Raf7 41. Rf3 Qb6 42. Qxc4 Qe6 43. Qxe6 Nxe6 44. Rd6 Ng5 45. Nxh6+ Rxh6 46. Rd8+ Kh7 47. Rxf7 Nxf7 48. Rd7 Rf6 49. Kg2 Kg6 50. f3 Rd6 51. Ra7 Rd2+ 52. Kf1 Ra2 53. h4 Nd6 54. g4 Nb5 55. Rd7 Kf6 56. Rb7 Nd4 57. Rb6+ Kf7 58. Rb7+ Kg6 59. h5+ Kh6 60. Rb6+ Kh7 61. f4 exf4 62. g5 Nf3 63. g6+ Kh6 0-1

[Event "Cape Town IM"]
[Site "Cape Town"]
[Date "2023.01.07"]
[Round "8"]
[White "Klaasen, Calvin Jong"]
[Black "Salimu, Reuben"]
[Result "1-0"]
[ECO "D23"]
[WhiteElo "2200"]
[BlackElo "1860"]
[PlyCount "83"]
[EventDate "2023.01.04"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "RSA"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Qc2 dxc4 5. Qxc4 Bf5 6. g3 e6 7. Bg2 Be7 8. 0-0 h6 9. Nc3 Ne4 10. Ne5 Nd6 11. Qb3 Qb6 12. e4 Qxb3 13. axb3 Bh7 14. Be3 Nd7 15. Nxd7 Kxd7 16. d5 cxd5 17. exd5 e5 18. Bxa7 Rhc8 19. Bb6 Bd8 20. Bxd8 Kxd8 21. Rxa8 Rxa8 22. Re1 f6 23. f4 exf4 24. gxf4 Ra6 25. Na4 Ra5 26. Re6 Nc8 27. Re3 Rb5 28. Rc3 b6 29. Bh3 f5 30. Bf1 Rb4 31. Ba6 Na7 32. d6 Bg8 33. Rc7 Bxb3 34. Nc3 Rd4 35. Rxa7 Rxd6 36. Rxg7 Ke8 37. Bb5+ Kf8 38. Rd7 Rg6+ 39. Kf2 Rg4 40. Ke3 Rh4 41. Rd2 Ke7 42. Bf1 1-0

[Event "Cape Town IM"]
[Site "Cape Town"]
[Date "2023.01.06"]
[Round "5"]
[White "Bhawoodien, Mohamed Ozayr"]
[Black "Klaasen, Calvin Jong"]
[Result "0-1"]
[ECO "D36"]
[WhiteElo "2196"]
[BlackElo "2200"]
[PlyCount "52"]
[EventDate "2023.01.04"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "RSA"]
[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 Nf6 4. cxd5 exd5 5. Bg5 c6 6. e3 h6 7. Bh4 Be7 8. Bd3 0-0 9. Qc2 Ne8 10. Bxe7 Qxe7 11. Nxd5 cxd5 12. Qxc8 Nc6 13. Qf5 g6 14. Qxd5 Rd8 15. Qc4 Rxd4 16. Qc3 Rg4 17. Kf1 Nd6 18. Nf3 Rc8 19. h3 Rb4 20. Rd1 Rb6 21. Kg1 Nb4 22. Qd4 Nxd3 23. Rxd3 Ne4 24. b3 Rd6 25. Qb4 Rc1+ 26. Ne1 Rxe1+ 0-1

[Event "Cape Town IM"]
[Site "Cape Town"]
[Date "2023.01.06"]
[Round "6"]
[White "Klaasen, Calvin Jong"]
[Black "Cawdery, Daniel"]
[Result "1/2-1/2"]
[ECO "A16"]
[WhiteElo "2200"]
[BlackElo "2396"]
[PlyCount "20"]
[EventDate "2023.01.04"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "RSA"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. e4 e5 4. Nf3 Bg7 5. g3 c6 6. Bg2 d5 7. cxd5 cxd5 8. exd5 Nxd5 9. 0-0 0-0 10. d4 exd4 1/2-1/2

[Event "Cape Town IM"]
[Site "Cape Town"]
[Date "2023.01.05"]
[Round "4"]
[White "Klaasen, Calvin Jong"]
[Black "Barrish, Daniel"]
[Result "0-1"]
[ECO "E05"]
[WhiteElo "2200"]
[BlackElo "2257"]
[PlyCount "104"]
[EventDate "2023.01.04"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "RSA"]
[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. g3 Be7 5. Bg2 0-0 6. 0-0 dxc4 7. Qc2 b6 8. Nbd2 Bb7 9. Nxc4 Be4 10. Qd1 Nbd7 11. b3 c5 12. Bb2 b5 13. Ncd2 Bb7 14. e3 Rc8 15. Qe2 Qb6 16. Rfc1 Rfd8 17. Bf1 a6 18. Ne1 Bc6 19. Nd3 cxd4 20. Bxd4 Qb7 21. b4 e5 22. Nxe5 Nxe5 23. Bxe5 Bxb4 24. Bxf6 Rxd2 25. Qg4 Bf8 26. Bc3 Rd6 27. Bd4 Rg6 28. Qf5 Re8 29. Qc2 Rh6 30. f4 Be4 31. Bg2 Rhe6 32. Bxe4 Rxe4 33. Qc6 Qe7 34. Rc2 Qa3 35. Qc3 Qa4 36. Rd1 b4 37. Qb3 Qd7 38. Rd3 Qf5 39. Rc7 R4e6 40. Rd1 h5 41. Rc2 Qg4 42. Rf1 Qf5 43. Qc4 a5 44. Rg2 Re4 45. Qc2 Rc8 46. Qd1 Bc5 47. Rd2 Rxe3 48. Rff2 Bxd4 49. Rxd4 Rce8 50. Rd8 Rxd8 51. Qxd8+ Kh7 52. Qd2 Qe4 0-1

[Event "Cape Town IM"]
[Site "Cape Town"]
[Date "2023.01.05"]
[Round "3"]
[White "Klaasen, Calvin Jong"]
[Black "Kayonde, Andrew"]
[Result "0-1"]
[ECO "E11"]
[WhiteElo "2200"]
[BlackElo "2378"]
[PlyCount "150"]
[EventDate "2023.01.04"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "RSA"]
[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. Bd2 Qe7 5. g3 Nc6 6. Nc3 Bxc3 7. Bxc3 Ne4 8. Rc1 0-0 9. Bg2 d6 10. d5 Nxc3 11. Rxc3 Nb8 12. dxe6 fxe6 13. 0-0 Nd7 14. Nd4 Nf6 15. Qb3 c6 16. Qa3 e5 17. Nc2 Bf5 18. Rd1 Rfd8 19. Ne3 Be6 20. Rcd3 Ne8 21. b4 a6 22. Qb2 Qc7 23. a4 Nf6 24. Qd2 Ne8 25. a5 Rd7 26. Rc1 Qd8 27. Qc3 Nf6 28. Rcd1 e4 29. R3d2 d5 30. cxd5 cxd5 31. Qe5 Qe7 32. Rc1 Re8 33. Qd4 h5 34. h4 Ng4 35. Nxg4 hxg4 36. e3 g5 37. hxg5 Qxg5 38. Rdc2 Rf7 39. Rc7 Ref8 40. Rxf7 Rxf7 41. Rc5 Qf5 42. Qb2 Bd7 43. Qd2 Bc6 44. b5 axb5 45. a6 Qf6 46. axb7 Rxb7 47. Qc1 Rb6 48. Bf1 b4 49. Qd1 Qe6 50. Be2 b3 51. Bxg4 Qd6 52. Rc1 b2 53. Rb1 Qf6 54. Bh3 Kf8 55. Qd2 Bb7 56. Bf1 Bc8 57. Qxd5 Bb7 58. Qc5+ Kg7 59. Bc4 Ba6 60. Bxa6 Rxa6 61. Qc7+ Kg6 62. Qc2 Ra1 63. g4 Rxb1+ 64. Qxb1 Qe5 65. Kg2 Kg5 66. f4+ exf3+ 67. Kxf3 Qb5 68. Kg3 Kf6 69. Kf3 Kg7 70. Kf2 Qb4 71. Kf3 Qd2 72. g5 Qc1 73. Qd3 b1Q 74. Qd4+ Kh7 75. Qh4+ Kg8 0-1

[Event "Cape Town IM"]
[Site "Cape Town"]
[Date "2023.01.04"]
[Round "1"]
[White "Klaasen, Calvin Jong"]
[Black "Oatlhotse, Providence"]
[Result "0-1"]
[ECO "E92"]
[WhiteElo "2200"]
[BlackElo "2209"]
[PlyCount "116"]
[EventDate "2023.01.04"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "RSA"]
[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. Nf3 0-0 6. Be2 e5 7. d5 a5 8. Bg5 h6 9. Bh4 Na6 10. Nd2 Qe8 11. a3 Bd7 12. Qc2 c6 13. 0-0 c5 14. Nb5 Qe7 15. Rae1 g5 16. Bg3 Nh7 17. Nc3 Rfe8 18. Nd1 Nf8 19. Ne3 Ng6 20. h3 Nf4 21. Bg4 Red8 22. Bxd7 Qxd7 23. Nf5 Nc7 24. h4 Ng6 25. Nf3 f6 26. a4 Ne7 27. Nxe7+ Qxe7 28. Nh2 Qd7 29. b3 Ra6 30. f3 Na8 31. Ng4 Nb6 32. Kf2 Kf7 33. Rh1 Rh8 34. Rh2 Raa8 35. Reh1 h5 36. Ne3 g4 37. fxg4 hxg4 38. Nf5 Nc8 39. Qe2 Ne7 40. Qxg4 Nxf5 41. exf5 Rag8 42. Qf3 Bh6 43. Re1 Qc7 44. Re4 Qb6 45. Qc3 Rg7 46. Kf1 Rhg8 47. Rh3 Qc7 48. Qf3 Bd2 49. Bf2 Bf4 50. g3 Bd2 51. g4 Bf4 52. Bg3 Rxg4 53. Bxf4 exf4 54. Rxf4 Rg1+ 55. Kf2 Kf8 56. Re4 Qg7 57. Rh2 Rb1 58. Ke2 Rb2+ 0-1

[Event "Cape Town IM"]
[Site "Cape Town"]
[Date "2023.01.04"]
[Round "2"]
[White "Kobese, Watu"]
[Black "Klaasen, Calvin Jong"]
[Result "1/2-1/2"]
[ECO "B35"]
[WhiteElo "2302"]
[BlackElo "2200"]
[PlyCount "37"]
[EventDate "2023.01.04"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "RSA"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 0-0 8. Bb3 Re8 9. 0-0 d6 10. h3 Na5 11. f4 Nxb3 12. axb3 b6 13. e5 dxe5 14. fxe5 Nd5 15. Qf3 Nxe3 16. Qxe3 Bb7 17. Rad1 Qc7 18. Nf3 Rad8 19. Ra1 1/2-1/2

[Event "South African op"]
[Site "Cape Town"]
[Date "2022.07.17"]
[Round "11"]
[White "Klaasen, Calvin Jong"]
[Black "Simpson, Michael"]
[Result "1-0"]
[ECO "D11"]
[WhiteElo "2212"]
[BlackElo "1860"]
[PlyCount "79"]
[EventDate "2022.07.09"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "RSA"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. g3 dxc4 5. Bg2 b5 6. a4 Bb7 7. b3 cxb3 8. Qxb3 a6 9. Ba3 e6 10. Bxf8 Rxf8 11. 0-0 Nbd7 12. Nc3 Qb6 13. Rfc1 Rc8 14. e3 Ke7 15. Ne1 Rfd8 16. Nd3 Ke8 17. Ne4 Nxe4 18. Bxe4 Nf6 19. Bg2 Rb8 20. Nc5 Rdc8 21. Rc2 Nd7 22. a5 Nxc5 23. Rxc5 Qd8 24. Qc3 Qd6 25. Rc1 Rc7 26. d5 Kf8 27. dxc6 Ba8 28. h4 h6 29. g4 b4 30. Qb3 Rb5 31. Rxb5 axb5 32. Rd1 Qe7 33. Rd7 Rxd7 34. cxd7 Qxd7 35. Qxb4+ Kg8 36. Bxa8 Qd1+ 37. Kg2 f5 38. Bf3 Qd7 39. a6 e5 40. gxf5 1-0

[Event "South African op"]
[Site "Cape Town"]
[Date "2022.07.16"]
[Round "10"]
[White "De Jager, Andreas"]
[Black "Klaasen, Calvin Jong"]
[Result "0-1"]
[ECO "B76"]
[WhiteElo "1853"]
[BlackElo "2212"]
[PlyCount "128"]
[EventDate "2022.07.09"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "RSA"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Be2 0-0 8. Qd2 d6 9. f3 Nxd4 10. Bxd4 Be6 11. Nd5 Bxd5 12. exd5 Rc8 13. b3 Nd7 14. c4 Bxd4 15. Qxd4 Qa5+ 16. Kf2 a6 17. a3 Qb6 18. Qxb6 Nxb6 19. Rhe1 Rc7 20. Bd3 a5 21. a4 Re8 22. Re3 Nd7 23. Rae1 Nc5 24. Bc2 e5 25. Ke2 f5 26. Kd2 Rf8 27. Kc3 Rg7 28. R3e2 h5 29. h4 g5 30. hxg5 Rxg5 31. Rh1 Rf7 32. Kb2 Rfg7 33. Rh2 f4 34. Kc3 Kf7 35. Kd2 Rg8 36. Ke1 Rh8 37. Rh4 Kf6 38. Kf2 Rhg8 39. Kf1 Kg7 40. Re1 Kh6 41. Rh2 Rg3 42. Rb1 Na6 43. Kf2 R3g5 44. Rbh1 Rh8 45. Rh3 Nc5 46. R3h2 Kg7 47. Rb1 Na6 48. Rbh1 Kf6 49. Rh4 Ke7 50. R1h2 Nc5 51. Rh1 Nd7 52. Rb1 Kd8 53. Bd3 Kc7 54. Bf1 Kb6 55. Ke2 Kc5 56. Kd3 Kb4 57. Kc2 Rhg8 58. Kb2 Rxg2+ 59. Bxg2 Rxg2+ 60. Ka1 Ka3 61. Rbh1 Ra2+ 62. Kb1 Rb2+ 63. Kc1 Nc5 64. Rxh5 Nd3+ 0-1

[Event "South African op"]
[Site "Cape Town"]
[Date "2022.07.16"]
[Round "9"]
[White "Klaasen, Calvin Jong"]
[Black "Beukes, Dante M"]
[Result "0-1"]
[ECO "E71"]
[WhiteElo "2212"]
[BlackElo "2234"]
[PlyCount "94"]
[EventDate "2022.07.09"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "RSA"]
[SourceTitle "CBM 211 Extra"]
[Source "ChessBase"]
[SourceDate "2023.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 0-0 6. Be3 e5 7. d5 a5 8. g4 Na6 9. Nge2 c6 10. Ng3 cxd5 11. exd5 Nc5 12. Qd2 a4 13. Be2 e4 14. 0-0-0 Re8 15. Bd4 e3 16. Bxe3 a3 17. b3 Nfe4 18. Ngxe4 Nxe4 19. Nxe4 Rxe4 20. Bd3 Rxe3 21. fxe3 Qf6 22. Qc2 Qe5 23. Rde1 Bd7 24. Rhf1 Bh6 25. Rf3 b5 26. Kd2 Bg7 27. Ref1 bxc4 28. Bxc4 Re8 29. Kd1 Re7 30. R1f2 h5 31. Rg2 hxg4 32. hxg4 Bh6 33. Qd2 Qe4 34. Rfg3 Qb1+ 35. Qc1 Qe4 36. Qd2 Bg7 37. Qc2 Qe5 38. Qc1 Qg5 39. Qxa3 Be5 40. Qa5 Bxg3 41. Rxg3 Qe5 42. Qe1 Qe4 43. Qg1 Qb1+ 44. Kd2 Qxa2+ 45. Kd3 Bb5 46. Qc1 Qxb3+ 47. Kd4 Bxc4 0-1

[Event "South African op"]
[Site "Cape Town"]
[Date "2022.07.15"]
[Round "8"]
[White "Klaasen, Calvin Jong"]
[Black "Willenberg, Kenneth Sean"]
[Result "1-0"]
[ECO "B21"]
[WhiteElo "2212"]
[BlackElo "1935"]
[PlyCount "42"]
[EventDate "2022.07.09"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "RSA"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 g6 4. Bxc6 dxc6 5. f4 Bg7 6. Nf3 Nf6 7. 0-0 0-0 8. d3 b5 9. Qe1 c4 10. dxc4 bxc4 11. Be3 Qa5 12. Ne5 Qc7 13. Qe2 Ba6 14. Rab1 Ne8 15. Qf3 f6 16. Ng4 f5 17. exf5 gxf5 18. Ne5 Bxe5 19. fxe5 Qxe5 20. Rbe1 Qf6 21. Bf4 Nd6 1-0

[Event "South African op"]
[Site "Cape Town"]
[Date "2022.07.13"]
[Round "7"]
[White "Cawdery, Daniel"]
[Black "Klaasen, Calvin Jong"]
[Result "1-0"]
[ECO "C78"]
[WhiteElo "2417"]
[BlackElo "2212"]
[PlyCount "51"]
[EventDate "2022.07.09"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "RSA"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 b5 6. Bb3 Bb7 7. d4 exd4 8. e5 Ne4 9. Bd5 Nc5 10. Nxd4 Nxd4 11. Bxb7 Nxb7 12. Qxd4 Be7 13. Qg4 g6 14. Bh6 d5 15. exd6 Nxd6 16. Qd4 Rg8 17. Qd5 Rb8 18. Bf4 g5 19. Bg3 Rg6 20. Nc3 Qd7 21. Rad1 Kf8 22. f4 g4 23. f5 Rh6 24. Ne4 Kg8 25. Bf4 Rh5 26. Ng3 1-0

[Event "South African op"]
[Site "Cape Town"]
[Date "2022.07.12"]
[Round "6"]
[White "Wilken, Justin Barend"]
[Black "Klaasen, Calvin Jong"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1862"]
[BlackElo "2212"]
[PlyCount "74"]
[EventDate "2022.07.09"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "RSA"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. Nc3 d5 3. Bf4 a6 4. e3 e6 5. Nf3 c5 6. dxc5 Bxc5 7. a3 Nc6 8. b4 Bd6 9. Bxd6 Qxd6 10. b5 Ne7 11. Qd4 Nf5 12. Qb4 a5 13. Qxd6 Nxd6 14. Be2 Bd7 15. Ne5 Rc8 16. Nxd7 Kxd7 17. Na4 Rxc2 18. Bd3 Rc7 19. 0-0 Ke7 20. Rab1 Nd7 21. b6 Rcc8 22. Rfc1 Rxc1+ 23. Rxc1 Rc8 24. Rc7 Kd8 25. Rxc8+ Nxc8 26. Bxh7 g6 27. h4 Nf6 28. Bxg6 fxg6 29. Nc5 Ke7 30. Nxb7 a4 31. f3 Nxb6 32. g4 Nfd7 33. h5 gxh5 34. gxh5 Kf6 35. f4 Nc4 36. h6 Kg6 37. e4 dxe4 0-1

[Event "South African op"]
[Site "Cape Town"]
[Date "2022.07.11"]
[Round "5"]
[White "Klaasen, Calvin Jong"]
[Black "Mathebula, Xolani Cebo"]
[Result "1-0"]
[ECO "C97"]
[WhiteElo "2212"]
[BlackElo "1759"]
[PlyCount "128"]
[EventDate "2022.07.09"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "RSA"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 0-0 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 Bd7 13. Nf1 Rfc8 14. Ne3 Bc6 15. Nf5 Bf8 16. Bg5 Ne8 17. b3 Bd7 18. d5 Nb7 19. Nd2 f6 20. Bh4 g6 21. Ne3 Nd8 22. a4 Nf7 23. Bd3 Qb7 24. Qe2 Bh6 25. Ra2 Bxe3 26. Qxe3 f5 27. f4 Ng7 28. Bg3 g5 29. fxe5 f4 30. Qe2 Nxe5 31. Bh2 Rf8 32. Rf1 Qb6 33. a5 Qd8 34. Kh1 h5 35. b4 c4 36. Bb1 Qf6 37. Qf2 Qh6 38. Ra1 Rf7 39. Qb6 g4 40. Ra2 g3 41. Bg1 f3 42. Nxf3 Nxf3 43. Rxf3 Rxf3 44. gxf3 Bxh3 45. Qe3 Qf6 46. e5 dxe5 47. Re2 Bf1 48. Qe4 Bxe2 49. Qxe2 h4 50. Qe4 Rf8 51. Kg2 Qf5 52. Bc5 Rf7 53. d6 Qh5 54. Qa8+ Rf8 55. Qxf8+ Kxf8 56. d7+ Kf7 57. d8Q h3+ 58. Kxg3 Nf5+ 59. Bxf5 Qxf5 60. Qf8+ Kg6 61. Qxf5+ Kxf5 62. Be3 e4 63. fxe4+ Kxe4 64. Bd4 Kd5 1-0

[Event "South African op"]
[Site "Cape Town"]
[Date "2022.07.10"]
[Round "3"]
[White "Klaasen, Calvin Jong"]
[Black "Mncwabe, Minenhle Junior"]
[Result "1/2-1/2"]
[ECO "C47"]
[WhiteElo "2212"]
[BlackElo "1764"]
[PlyCount "100"]
[EventDate "2022.07.09"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "RSA"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. a3 a6 5. d4 exd4 6. Nxd4 Bc5 7. Be3 Bxd4 8. Bxd4 Nxd4 9. Qxd4 d6 10. 0-0-0 Qe7 11. Be2 0-0 12. f4 Re8 13. Bf3 Bg4 14. Bxg4 Nxg4 15. h3 Nf6 16. Rhe1 Rad8 17. g4 h6 18. Qg1 Qe6 19. Kb1 b5 20. g5 hxg5 21. Qxg5 Nh7 22. Qg3 f5 23. Nd5 Qf7 24. exf5 c6 25. Ne3 Kh8 26. Qg4 Nf6 27. Qg6 Qxg6 28. fxg6 Ne4 29. Ng4 Kg8 30. Kc1 Rc8 31. Re2 d5 32. Ne5 Re6 33. Rg1 Rf8 34. Nf7 Rf6 35. Rg4 Re8 36. h4 Rf5 37. b3 Re6 38. Rh2 Rh5 39. Ne5 Kf8 40. Nd3 Ke7 41. Kb2 a5 42. Nf2 Nf6 43. Rg5 Re2 44. Kc1 Rxg5 45. fxg5 Ne4 46. Ng4 Rxh2 47. Nxh2 Ke6 48. Nf3 c5 49. h5 Kf5 50. h6 Kxg6 1/2-1/2

[Event "South African op"]
[Site "Cape Town"]
[Date "2022.07.10"]
[Round "4"]
[White "Palmer, Reegan"]
[Black "Klaasen, Calvin Jong"]
[Result "0-1"]
[ECO "A36"]
[WhiteElo "1759"]
[BlackElo "2212"]
[PlyCount "102"]
[EventDate "2022.07.09"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "RSA"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 Nc6 5. d3 d6 6. e4 e6 7. Nge2 Nge7 8. 0-0 0-0 9. a3 b6 10. Rb1 Bb7 11. b4 Qd7 12. Be3 Rad8 13. d4 cxd4 14. Nxd4 Ne5 15. Qb3 Rc8 16. c5 Ng4 17. cxd6 Nc6 18. Nce2 Nxe3 19. Qxe3 Qxd6 20. Nxc6 Qxc6 21. Rfc1 Qb5 22. f4 Ba6 23. Bf3 Qd3 24. Qxd3 Bxd3 25. Rxc8 Rxc8 26. Rd1 Bb5 27. e5 Bf8 28. Nd4 Ba4 29. Rd3 a5 30. bxa5 bxa5 31. Kg2 Rd8 32. Be4 Bxa3 33. Rxa3 Rxd4 34. Kf3 Rb4 35. Ra1 h5 36. h3 Kg7 37. g4 h4 38. f5 exf5 39. gxf5 gxf5 40. Bxf5 Bc6+ 41. Ke3 a4 42. Bc2 Kf8 43. Rb1 Rxb1 44. Bxb1 Bd7 45. Kf4 Bxh3 46. Kg5 Be6 47. Kxh4 a3 48. Kg5 Ke7 49. Kf4 Bb3 50. Ke3 a2 51. Bxa2 Bxa2 0-1

[Event "South African op"]
[Site "Cape Town"]
[Date "2022.07.09"]
[Round "1"]
[White "Klaasen, Calvin Jong"]
[Black "Macheka, Clayton"]
[Result "1-0"]
[ECO "C44"]
[WhiteElo "2212"]
[BlackElo "1618"]
[PlyCount "99"]
[EventDate "2022.07.09"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "RSA"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. d3 Nc6 4. Be2 Bc5 5. c3 0-0 6. 0-0 d5 7. Nbd2 Bb6 8. b4 a6 9. a3 Be6 10. h3 Re8 11. Re1 Qd7 12. Ng5 Ne7 13. Nxe6 fxe6 14. Qc2 Rf8 15. Nf3 Ng6 16. Bb2 c6 17. c4 d4 18. c5 Bd8 19. Qc4 h6 20. Bc1 Qf7 21. Rf1 Nh7 22. a4 Ng5 23. Bxg5 hxg5 24. g3 Kh7 25. Nd2 Re8 26. Bg4 Nf8 27. Nf3 Nd7 28. Kg2 Bf6 29. Rfc1 Rac8 30. Qb3 Qe7 31. Nd2 Qf7 32. Nc4 Be7 33. Na5 Bd8 34. Nxb7 Bc7 35. Qc4 Ra8 36. Nd6 Bxd6 37. cxd6 Nf6 38. Bd1 Rf8 39. Ra2 a5 40. bxa5 Qa7 41. Qc5 Qa6 42. Rc4 Rab8 43. Qxe5 Rb1 44. Be2 Qb7 45. Qxd4 Qb3 46. Rac2 Rb8 47. Qc3 Qb7 48. Rxc6 Rb3 49. Qe5 Rb1 50. Rc7 1-0

[Event "South African op"]
[Site "Cape Town"]
[Date "2022.07.09"]
[Round "2"]
[White "Van Zyl, Albrecht"]
[Black "Klaasen, Calvin Jong"]
[Result "1/2-1/2"]
[ECO "C95"]
[WhiteElo "1705"]
[BlackElo "2212"]
[PlyCount "81"]
[EventDate "2022.07.09"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "RSA"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 0-0 9. h3 Nb8 10. d4 Nbd7 11. Nbd2 Bb7 12. Bc2 Re8 13. Nf1 Bf8 14. Ng3 g6 15. Bd2 Bg7 16. Qc1 Qe7 17. Bh6 Qf8 18. Bxg7 Qxg7 19. a4 c5 20. Qd2 Qf8 21. b3 Bc6 22. d5 Bb7 23. Bd3 c4 24. bxc4 bxa4 25. Bc2 Rec8 26. Reb1 Rc7 27. Bxa4 Nc5 28. Qe3 Nfd7 29. Bxd7 Nxd7 30. h4 Bc8 31. Nd2 a5 32. h5 a4 33. Ra3 Qg7 34. Rba1 Rca7 35. Qg5 f6 36. Qe3 Nc5 37. Rb1 Rb7 38. Rb5 Qc7 39. hxg6 hxg6 40. Qh6 Qg7 41. Qe3 1/2-1/2

[Event "RSA-ch"]
[Site "Cape Town"]
[Date "2022.05.13"]
[Round "8"]
[White "Willenberg, Kenneth Sean"]
[Black "Klaasen, Calvin Jong"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "1935"]
[BlackElo "2245"]
[PlyCount "79"]
[EventDate "2022.05.07"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "RSA"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. c3 Nf6 5. e5 Nd5 6. Bc4 e6 7. cxd4 d6 8. 0-0 Be7 9. Qe2 0-0 10. Rd1 Na5 11. Na3 Nxc4 12. Nxc4 dxe5 13. dxe5 b6 14. Qe4 Nc3 15. Rxd8 Nxe4 16. Rd4 Bb7 17. Be3 Bd5 18. b4 Rac8 19. Ncd2 Nxd2 20. Nxd2 Rc2 21. Ne4 Rd8 22. a4 f5 23. Nd2 Rdc8 24. Nf1 g5 25. g3 Rb2 26. a5 h6 27. axb6 axb6 28. h4 Kf7 29. hxg5 hxg5 30. Ra7 Ke8 31. Ra1 Rcc2 32. Bd2 Ra2 33. Rxa2 Rxa2 34. f4 gxf4 35. gxf4 b5 36. Ne3 Be4 37. Bc3 Bh4 38. Rd2 Ra3 39. Nd1 Bg3 40. Rd6 0-1

[Event "RSA-ch"]
[Site "Cape Town"]
[Date "2022.05.12"]
[Round "7"]
[White "Klaasen, Calvin Jong"]
[Black "Mazibuko, Khanya"]
[Result "1-0"]
[ECO "C94"]
[WhiteElo "2245"]
[BlackElo "1917"]
[PlyCount "111"]
[EventDate "2022.05.07"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "RSA"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 0-0 9. h3 Nb8 10. d3 Nbd7 11. Nbd2 h6 12. Nf1 Re8 13. Ng3 Bf8 14. Nh2 Nc5 15. Bc2 d5 16. Qf3 d4 17. Nf5 Bxf5 18. Qxf5 Qd7 19. Qxd7 Nfxd7 20. Nf3 Ne6 21. Bb3 c5 22. Bd5 Ra7 23. c4 Bd6 24. g3 bxc4 25. Bxc4 Nb6 26. Nd2 Nd8 27. Bb3 Nc6 28. Nc4 Bc7 29. Bd2 Nxc4 30. Bxc4 Rb8 31. b3 a5 32. Rec1 Bd6 33. a4 Kf8 34. Bb5 Nb4 35. Bxb4 cxb4 36. Rc6 Ke7 37. Rac1 Rbb7 38. Rc8 Rc7 39. R1xc7+ Rxc7 40. Re8+ Kf6 41. Bc4 Re7 42. Ra8 Bc7 43. Ra6+ Kg5 44. h4+ Kh5 45. Kg2 f6 46. Kh3 Kg6 47. Ra8 Kh7 48. h5 g6 49. Rf8 gxh5 50. Rxf6 Kg7 51. Rc6 Rd7 52. Kh4 Bd8+ 53. Kxh5 Bg5 54. Rc5 Be3 55. f3 Rd6 56. Rxe5 1-0

[Event "RSA-ch"]
[Site "Cape Town"]
[Date "2022.05.11"]
[Round "6"]
[White "Barrish, Daniel"]
[Black "Klaasen, Calvin Jong"]
[Result "1/2-1/2"]
[ECO "D35"]
[WhiteElo "2281"]
[BlackElo "2245"]
[PlyCount "153"]
[EventDate "2022.05.07"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "RSA"]
[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 d5 4. cxd5 exd5 5. Bg5 c6 6. e3 h6 7. Bh4 Be7 8. Bd3 0-0 9. Nge2 Re8 10. 0-0 a5 11. f3 Na6 12. Rc1 Bd7 13. Bb1 b5 14. Bf2 Rc8 15. Nf4 Bd6 16. Nce2 Qe7 17. Qd3 g6 18. Qd2 Bb4 19. Qd1 Bd6 20. a3 Qf8 21. Ng3 Qg7 22. Qd2 a4 23. h3 h5 24. Rfe1 Qh6 25. Nf1 Nc7 26. Nd3 Na8 27. e4 Qxd2 28. Nxd2 Bb8 29. e5 Nh7 30. g4 Ba7 31. gxh5 Nc7 32. hxg6 fxg6 33. Nf4 Ng5 34. Bxg6 Rf8 35. h4 Nxf3+ 36. Nxf3 Rxf4 37. Bh5 Rcf8 38. Rc3 Ne6 39. Kg2 Ng7 40. e6 Bxe6 41. Bg3 R4f6 42. Rxc6 Bh3+ 43. Kxh3 Rxc6 44. Bg4 Rcf6 45. Re7 Bb6 46. Re6 R8f7 47. Re8+ Rf8 48. Re7 R8f7 49. Re8+ Rf8 50. Rxf8+ Rxf8 51. Be5 Nf5 52. h5 Bd8 53. h6 Kh7 54. Bxf5+ Rxf5 55. Kg4 Rxf3 56. Kxf3 Kxh6 57. Kg4 Kg6 58. Bf4 Ba5 59. Be3 Kf6 60. Kf4 Ke6 61. Kg4 Bd8 62. Bg5 Bb6 63. Be3 Bc7 64. Bf4 Ba5 65. Be3 Bb6 66. Kf4 Bd8 67. Kg4 Bf6 68. Kf4 Bg7 69. Kg4 Kf6 70. Bg5+ Kg6 71. Be3 Bf6 72. Kf3 Kf5 73. Bf2 Bg5 74. Be1 Bh6 75. Bb4 Bg7 76. Bc5 Bh6 77. Bb4 1/2-1/2

[Event "RSA-ch"]
[Site "Cape Town"]
[Date "2022.05.10"]
[Round "5"]
[White "Klaasen, Calvin Jong"]
[Black "Kobese, Watu"]
[Result "0-1"]
[ECO "E90"]
[WhiteElo "2245"]
[BlackElo "2324"]
[PlyCount "82"]
[EventDate "2022.05.07"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "RSA"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 0-0 6. Be3 c5 7. Nf3 cxd4 8. Nxd4 b6 9. g3 Bb7 10. Bg2 Nbd7 11. 0-0 Nc5 12. Qc2 Rc8 13. Rad1 Nfd7 14. Qe2 a6 15. h4 b5 16. cxb5 axb5 17. b4 Na4 18. Nxa4 bxa4 19. Qb5 Bxd4 20. Bxd4 Bc6 21. Qa6 Qe8 22. Rc1 Nb8 23. Qa5 Qd7 24. Rfd1 Qe6 25. f3 Qxa2 26. Qg5 f6 27. Qh6 Bd7 28. h5 g5 29. f4 Rxc1 30. Rxc1 Qd2 31. Rc4 Bb5 32. Bf1 d5 33. Bxf6 exf6 34. Rc7 Bd7 35. Bh3 dxe4 36. Bf5 Qe1+ 37. Kg2 Qe2+ 38. Kg1 Qd1+ 39. Kg2 Rf7 40. Bxh7+ Rxh7 41. Qxf6 Qf3+ 0-1

[Event "RSA-ch"]
[Site "Cape Town"]
[Date "2022.05.09"]
[Round "4"]
[White "Cawdery, Daniel"]
[Black "Klaasen, Calvin Jong"]
[Result "1-0"]
[ECO "C51"]
[WhiteElo "2419"]
[BlackElo "2245"]
[PlyCount "67"]
[EventDate "2022.05.07"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "RSA"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bxb4 5. c3 Be7 6. d4 Na5 7. Be2 d6 8. dxe5 dxe5 9. Qa4+ c6 10. Nxe5 Nf6 11. 0-0 0-0 12. Rd1 Qc7 13. Bf4 b5 14. Qc2 Qb6 15. Nd2 Be6 16. Ndf3 Ng4 17. Nd4 Nxe5 18. Bxe5 Bc5 19. Nxe6 fxe6 20. Rd7 Rf7 21. Rxf7 Kxf7 22. Qd2 Qb7 23. Qg5 Kg8 24. Rd1 Qf7 25. Bh5 g6 26. Bf3 Nc4 27. Bf6 Bf8 28. e5 Rc8 29. h4 Nb6 30. h5 Nd5 31. Be4 Ne7 32. Rd7 h6 33. Qg4 g5 34. Bg6 1-0

[Event "RSA-ch"]
[Site "Cape Town"]
[Date "2022.05.08"]
[Round "3"]
[White "Klaasen, Calvin Jong"]
[Black "Bhawoodien, Shabier Hussain"]
[Result "1/2-1/2"]
[ECO "E56"]
[WhiteElo "2245"]
[BlackElo "2033"]
[PlyCount "113"]
[EventDate "2022.05.07"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "RSA"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e6 3. d4 c5 4. e3 Be7 5. Nf3 0-0 6. Bd3 Nc6 7. 0-0 d5 8. cxd5 exd5 9. dxc5 Bxc5 10. b3 a6 11. Bb2 Qe7 12. Rc1 Ba3 13. Bxa3 Qxa3 14. Bb1 Rd8 15. h3 Be6 16. Nd4 Rac8 17. f3 Qb4 18. Nce2 Nxd4 19. Qxd4 Qxd4 20. Nxd4 Kf8 21. Kf2 Ke7 22. Ke2 Kd6 23. Kd2 g6 24. g4 Nd7 25. Rxc8 Rxc8 26. f4 f6 27. Rg1 Bf7 28. h4 Nc5 29. g5 f5 30. h5 Ne6 31. Nf3 gxh5 32. Bxf5 Bg6 33. Bxe6 Kxe6 34. Nd4+ Kd6 35. f5 Be8 36. g6 hxg6 37. fxg6 Bd7 38. g7 Rg8 39. Rg5 h4 40. Ke2 h3 41. Kf3 Ke7 42. Kf4 Kf6 43. Rxd5 Rxg7 44. Rd6+ Ke7 45. Rh6 Rg2 46. a4 a5 47. Nf5+ Bxf5 48. Kxf5 h2 49. e4 Rb2 50. e5 Rf2+ 51. Ke4 Kd7 52. Kd5 Rd2+ 53. Kc5 Rb2 54. Kd5 Rd2+ 55. Kc5 Rb2 56. Kd5 Rd2+ 57. Ke4 1/2-1/2

[Event "RSA-ch"]
[Site "Cape Town"]
[Date "2022.05.08"]
[Round "2"]
[White "Mhango, Banele"]
[Black "Klaasen, Calvin Jong"]
[Result "1-0"]
[ECO "E18"]
[WhiteElo "2206"]
[BlackElo "2245"]
[PlyCount "147"]
[EventDate "2022.05.07"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "RSA"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 b6 3. g3 Bb7 4. Bg2 e6 5. 0-0 Be7 6. c4 0-0 7. Nc3 Ne4 8. Bd2 d5 9. cxd5 exd5 10. Rc1 Nd7 11. Bf4 c5 12. dxc5 Nxc3 13. Rxc3 Nxc5 14. Be5 Re8 15. Rc2 Bf8 16. b3 Qd7 17. Qa1 Rad8 18. Rfc1 Ba6 19. Bf1 Qf5 20. Bd4 h6 21. Nh4 Qh5 22. Ng2 Ne6 23. Rd1 Bc5 24. Bxc5 bxc5 25. Qc1 d4 26. Ne1 Rc8 27. Nd3 Rc7 28. Bg2 Rec8 29. Qa3 Bxd3 30. Rxd3 Qf5 31. Qa5 g6 32. h4 h5 33. Rc4 Qe5 34. Qd2 Kg7 35. Bh3 f5 36. f4 Qd6 37. Bg2 Re8 38. e3 Ree7 39. Qb2 Kh7 40. Kh2 Qb6 41. Qf2 Rcd7 42. Rc1 Ng7 43. exd4 cxd4 44. Rc6 Qd8 45. Qc2 Ne6 46. Qc4 Rd6 47. Rc8 Qb6 48. Bd5 Nc7 49. Bg2 Ne6 50. b4 Rc7 51. Rxc7+ Qxc7 52. Qb5 Qd7 53. Qa5 Ng7 54. b5 Ne6 55. Qb4 Qc7 56. Bc6 Rd8 57. a4 Qd6 58. Qxd6 Rxd6 59. a5 Nc5 60. Ra3 d3 61. Bf3 d2 62. Bd1 Rd7 63. a6 Rd8 64. Rc3 Rc8 65. Rc2 Rc7 66. Bf3 Kg7 67. Rxd2 Nd7 68. Bc6 Nb6 69. Rd6 Re7 70. Kg2 Kf7 71. Kf2 Kg7 72. Kf3 Kf7 73. Bd5+ Kg7 74. Rxb6 1-0

[Event "RSA-ch"]
[Site "Cape Town"]
[Date "2022.05.07"]
[Round "1"]
[White "Klaasen, Calvin Jong"]
[Black "Solomon, Kenny"]
[Result "1/2-1/2"]
[ECO "C88"]
[WhiteElo "2245"]
[BlackElo "2356"]
[PlyCount "81"]
[EventDate "2022.05.07"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "RSA"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. h3 Bb7 9. d3 d6 10. a3 Qd7 11. Nc3 Rfe8 12. Bd2 Nd8 13. Nd5 Ne6 14. Nxe7+ Qxe7 15. c3 c5 16. Bc2 Rac8 17. a4 Qc7 18. Qe2 Bc6 19. Nh2 Qb7 20. Ng4 Nxg4 21. Qxg4 bxa4 22. Rab1 Qd7 23. Bc1 Bb5 24. Qd1 c4 25. d4 Rc7 26. Ra1 Rb8 27. Bxa4 Qe7 28. Re2 Qf6 29. Be3 Qe7 30. Rd2 exd4 31. cxd4 c3 32. bxc3 Rxc3 33. Rb2 Qe8 34. Rab1 Rcc8 35. Bxb5 Rxb5 36. Rxb5 axb5 37. Qd3 Rc4 38. Rc1 Rxc1+ 39. Bxc1 Qc6 40. Bd2 d5 41. f3 1/2-1/2

[Event "Titled Tuesday intern op 04th Jan"]
[Site "Chess.com INT"]
[Date "2022.01.04"]
[Round "8"]
[White "Deviprasath, Sharvesh"]
[Black "Klaasen, Calvin Jong"]
[Result "1-0"]
[ECO "E61"]
[WhiteElo "2268"]
[BlackElo "2208"]
[PlyCount "67"]
[EventDate "2022.01.04"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 0-0 5. Bg5 h6 6. Bd2 c5 7. d5 e6 8. Qc1 exd5 9. cxd5 Kh7 10. h4 d6 11. h5 Nxh5 12. e4 Na6 13. Bd3 Nb4 14. Bb1 c4 15. Qd1 Nd3+ 16. Bxd3 cxd3 17. Be3 Bg4 18. Qxd3 Bxf3 19. gxf3 Rc8 20. 0-0-0 Qa5 21. Kb1 Bxc3 22. bxc3 Qxc3 23. Qxc3 Rxc3 24. Bxa7 Rxf3 25. Be3 Re8 26. Rd4 f5 27. Rb4 Re7 28. e5 dxe5 29. d6 Rd7 30. Rc1 f4 31. Rc7 Rxc7 32. dxc7 fxe3 33. c8Q exf2 34. Qxb7+ 1-0

[Event "Titled Tuesday intern op 04th Jan"]
[Site "Chess.com INT"]
[Date "2022.01.04"]
[Round "5"]
[White "Klaasen, Calvin Jong"]
[Black "Ashiev, Eduard"]
[Result "1-0"]
[ECO "E06"]
[WhiteElo "2208"]
[BlackElo "2202"]
[PlyCount "47"]
[EventDate "2022.01.04"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. g3 e6 4. Bg2 Be7 5. c4 0-0 6. Nc3 c6 7. 0-0 dxc4 8. Ne5 c5 9. dxc5 Bxc5 10. Nxc4 Qe7 11. Bf4 Rd8 12. Qb3 Nc6 13. e3 Nd5 14. Ne4 Bd7 15. Nxc5 Qxc5 16. Bd6 Na5 17. Bxc5 Nxb3 18. axb3 Rac8 19. Bxa7 Bb5 20. Rfc1 Nb4 21. Bb6 Rd3 22. Bf1 Rxb3 23. Nd2 Rxc1 24. Rxc1 1-0

[Event "Titled Tuesday intern op 04th Jan"]
[Site "Chess.com INT"]
[Date "2022.01.04"]
[Round "9"]
[White "Klaasen, Calvin Jong"]
[Black "Broca Jimenez, Fernando"]
[Result "0-1"]
[ECO "B92"]
[WhiteElo "2208"]
[BlackElo "2075"]
[PlyCount "86"]
[EventDate "2022.01.04"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[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. a4 Nc6 10. Bf3 Be6 11. Re1 Rc8 12. Be3 Na5 13. Nd2 d5 14. exd5 Nxd5 15. Nxd5 Bxd5 16. Bxd5 Qxd5 17. Bb6 Nc4 18. Nxc4 Qxc4 19. c3 Bf6 20. Qd7 Qb3 21. a5 Qxb2 22. Qxb7 Rxc3 23. Qxa6 Rc2 24. Rab1 Qa2 25. Qb7 Re2 26. Rf1 e4 27. a6 h5 28. a7 h4 29. Bc5 Re8 30. Qb8 Rd8 31. Bb6 Rf8 32. Bc5 Rd8 33. Rbd1 Rxb8 34. axb8Q+ Kh7 35. Qf4 Qe6 36. Be3 Rxe3 37. fxe3 Be5 38. Qf5+ Qxf5 39. Rxf5 Bf6 40. Rxf6 gxf6 41. Rd5 f5 42. Rxf5 Kg6 43. Rf4 f5 0-1

[Event "Titled Tuesday intern op 04th Jan"]
[Site "Chess.com INT"]
[Date "2022.01.04"]
[Round "2"]
[White "Klaasen, Calvin Jong"]
[Black "Paravyan, David"]
[Result "0-1"]
[ECO "D90"]
[WhiteElo "2208"]
[BlackElo "2617"]
[PlyCount "50"]
[EventDate "2022.01.04"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. cxd5 Nxd5 6. Bd2 c5 7. Rc1 Nxc3 8. Bxc3 cxd4 9. Bxd4 0-0 10. Bxg7 Kxg7 11. Qxd8 Rxd8 12. e3 Be6 13. a3 Nc6 14. Bb5 Bd5 15. Ke2 a6 16. Bd3 Rd6 17. Rhd1 Rad8 18. Ne1 Ne5 19. Rc7 b5 20. Rc3 Nxd3 21. Nxd3 Bxg2 22. f3 Bh3 23. Rdc1 Be6 24. R1c2 Bc4 25. Rd2 Kf6 0-1

[Event "Titled Tuesday intern op 04th Jan"]
[Site "Chess.com INT"]
[Date "2022.01.04"]
[Round "7"]
[White "Klaasen, Calvin Jong"]
[Black "Prithu, Gupta"]
[Result "1-0"]
[ECO "D34"]
[WhiteElo "2208"]
[BlackElo "2444"]
[PlyCount "57"]
[EventDate "2022.01.04"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. g3 c5 4. Bg2 Nc6 5. 0-0 cxd4 6. Nxd4 e6 7. c4 Be7 8. Nc3 0-0 9. cxd5 exd5 10. Bg5 Qb6 11. Nb3 d4 12. Bxf6 Bxf6 13. Nd5 Qd8 14. Nxf6+ Qxf6 15. Bxc6 Qxc6 16. Nxd4 Qb6 17. b3 Bh3 18. Re1 Rac8 19. e3 Qg6 20. Qf3 Rc7 21. Rac1 Rfc8 22. Rxc7 Rxc7 23. Qf4 Rc8 24. e4 h5 25. Nf5 Qf6 26. Rc1 Rxc1+ 27. Qxc1 g6 28. Ne3 Qf3 29. Qc4 1-0

[Event "Titled Tuesday intern op 04th Jan"]
[Site "Chess.com INT"]
[Date "2022.01.04"]
[Round "4"]
[White "Klaasen, Calvin Jong"]
[Black "Vlassov, Nikolai"]
[Result "0-1"]
[ECO "E10"]
[WhiteElo "2208"]
[BlackElo "2294"]
[PlyCount "60"]
[EventDate "2022.01.04"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 Nc6 3. Nf3 e6 4. a3 g6 5. Nc3 Bg7 6. e4 d5 7. e5 Ne4 8. Bd3 Nxc3 9. bxc3 dxc4 10. Bxc4 Na5 11. Bd3 c5 12. Qa4+ Bd7 13. Bb5 Nc6 14. Bg5 Qc7 15. Qb3 h6 16. Bf6 Bxf6 17. exf6 cxd4 18. 0-0 Qf4 19. Bxc6 Bxc6 20. Qb4 0-0-0 21. Nxd4 Bd5 22. Nc6 Qxb4 23. Nxa7+ Kb8 24. axb4 Bc4 25. Rfc1 Rd5 26. b5 Rhd8 27. b6 Rd2 28. h3 R8d6 29. Rab1 R6d5 30. Rb4 Rc5 0-1

[Event "Titled Tuesday intern op 04th Jan"]
[Site "Chess.com INT"]
[Date "2022.01.04"]
[Round "6"]
[White "Omelja, Artem"]
[Black "Klaasen, Calvin Jong"]
[Result "1-0"]
[ECO "E12"]
[WhiteElo "2515"]
[BlackElo "2208"]
[PlyCount "65"]
[EventDate "2022.01.04"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 7. Bg5 Be7 8. Bxe7 Qxe7 9. e3 0-0 10. Bd3 c5 11. 0-0 cxd4 12. Nxd4 Nxc3 13. bxc3 Nd7 14. Qh5 g6 15. Qe2 Rac8 16. Rfc1 Nc5 17. Bc4 e5 18. Nf3 Rfd8 19. Rd1 Kg7 20. Ba2 Ba6 21. Qc2 Bd3 22. Qb2 Na4 23. Qb4 Nc5 24. Rac1 f6 25. Bc4 Kf8 26. Qb5 Be4 27. Ba2 Qb7 28. Ne1 Qa6 29. Qxa6 Nxa6 30. f3 Bc6 31. Kf2 Nc5 32. Ke2 Rc7 33. Rxd8+ 1-0

[Event "Titled Tuesday intern op 04th Jan"]
[Site "Chess.com INT"]
[Date "2022.01.04"]
[Round "3"]
[White "Sailer, Mike L"]
[Black "Klaasen, Calvin Jong"]
[Result "0-1"]
[ECO "A47"]
[WhiteElo "2109"]
[BlackElo "2208"]
[PlyCount "78"]
[EventDate "2022.01.04"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 b6 3. Bf4 Bb7 4. e3 g6 5. Be2 Bg7 6. 0-0 d6 7. a4 a5 8. Nbd2 Nbd7 9. Re1 0-0 10. h3 e6 11. c3 Qe7 12. Qc2 e5 13. Bg5 h6 14. Bh4 e4 15. Nh2 g5 16. Bg3 Nd5 17. Bc4 f5 18. Nhf1 Kh8 19. Bxd5 Bxd5 20. c4 Bb7 21. Bh2 h5 22. Rad1 h4 23. d5 Nc5 24. Nb3 Nd3 25. Rxd3 exd3 26. Qxd3 Rae8 27. Nd4 Bxd4 28. Qxd4+ Qg7 29. Qd3 Qxb2 30. Nd2 Qf6 31. Nf3 Re4 32. Nd4 Rfe8 33. Ne6 R8xe6 34. dxe6 Qxe6 35. c5 bxc5 36. Qc3+ Kh7 37. Qxa5 Qd7 38. Rb1 Qc6 39. Qd2 Rb4 0-1

[Event "RSA-ch"]
[Site "Cape Town"]
[Date "2019.12.17"]
[Round "11"]
[White "Klaasen, Calvin Jong"]
[Black "Hercules, Benjamin Vincent"]
[Result "1/2-1/2"]
[ECO "E06"]
[WhiteElo "2247"]
[BlackElo "2209"]
[PlyCount "58"]
[EventDate "2019.12.07"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "RSA"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. g3 Be7 5. Bg2 0-0 6. Nc3 dxc4 7. Ne5 Nc6 8. Bxc6 bxc6 9. Nxc6 Qe8 10. Nxe7+ Qxe7 11. Qa4 c5 12. dxc5 Qxc5 13. Be3 Qh5 14. f3 Rb8 15. 0-0-0 Nd5 16. Bd4 Nxc3 17. Bxc3 Qg5+ 18. Rd2 Bb7 19. Qxa7 Qb5 20. Qd4 f6 21. Qd7 Qa6 22. a3 Bd5 23. Rxd5 exd5 24. Qxd5+ Kh8 25. Rd1 h6 26. h4 Qb6 27. Qd4 Qc7 28. Qd6 Qa7 29. Qd4 Qa4 1/2-1/2

[Event "RSA-ch"]
[Site "Cape Town"]
[Date "2019.12.16"]
[Round "10"]
[White "James, Michael"]
[Black "Klaasen, Calvin Jong"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1929"]
[BlackElo "2247"]
[PlyCount "78"]
[EventDate "2019.12.07"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "RSA"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Bb5 Nd4 5. a4 Bg7 6. Nf3 a6 7. Bc4 e6 8. e5 d5 9. exd6 Nf6 10. d3 Qxd6 11. a5 0-0 12. 0-0 Bd7 13. Ne5 Bc6 14. Nxc6 Qxc6 15. Ne2 Rad8 16. Nxd4 cxd4 17. Qf3 Nd5 18. Bd2 Qc5 19. Rfe1 h5 20. h3 h4 21. Re4 Ne7 22. Bb3 Bf6 23. Ra4 Nd5 24. Kh1 Kg7 25. Rc4 Qa7 26. Ra4 Rh8 27. Bc4 Rh5 28. Ra1 Rf5 29. Qe2 Qb8 30. Rf1 Rh5 31. Qg4 Ne7 32. Rfe1 Nf5 33. Re5 Rdh8 34. Kg1 Qd6 35. b3 Ne3 36. Bxe3 dxe3 37. Rxh5 Rxh5 38. Kh1 Rxa5 39. Qf3 b5 0-1

[Event "RSA-ch"]
[Site "Cape Town"]
[Date "2019.12.15"]
[Round "9"]
[White "Klaasen, Calvin Jong"]
[Black "Bezuidenhout, Roland Reinhold"]
[Result "0-1"]
[ECO "D11"]
[WhiteElo "2247"]
[BlackElo "2200"]
[PlyCount "80"]
[EventDate "2019.12.07"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "RSA"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 c6 3. g3 Bf5 4. c4 e6 5. Nc3 Nd7 6. Bg2 Ngf6 7. Qb3 Qb6 8. c5 Qxb3 9. axb3 a6 10. b4 Rc8 11. 0-0 Be7 12. Bf4 h6 13. h3 Ne4 14. Nd2 Nxd2 15. Bxd2 Bf6 16. e4 dxe4 17. Be3 Be7 18. g4 Bg6 19. Bxe4 Bxe4 20. Nxe4 Nf6 21. Nxf6+ Bxf6 22. Rad1 Rd8 23. Kg2 Rd5 24. f4 Ke7 25. Rd2 Rhd8 26. Rfd1 g6 27. Kf3 Bg7 28. Bf2 R8d7 29. Bh4+ g5 30. Bf2 f5 31. fxg5 hxg5 32. Be3 Bf6 33. gxf5 exf5 34. Bf2 Kf7 35. Bg1 Kg6 36. Rd3 Rh7 37. Kg2 f4 38. Re1 Kf5 39. Bf2 Rhd7 40. Red1 Ke4 0-1

[Event "RSA-ch"]
[Site "Cape Town"]
[Date "2019.12.14"]
[Round "8"]
[White "Gluckman, Paul"]
[Black "Klaasen, Calvin Jong"]
[Result "1-0"]
[ECO "B74"]
[WhiteElo "1943"]
[BlackElo "2247"]
[PlyCount "109"]
[EventDate "2019.12.07"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "RSA"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Be2 0-0 8. Nb3 d6 9. 0-0 a5 10. a3 Be6 11. Nd4 Nxd4 12. Bxd4 a4 13. Re1 Qa5 14. Bf3 Nd7 15. Bxg7 Kxg7 16. Qd4+ Kg8 17. Be2 Rfc8 18. Rad1 Nb6 19. Bd3 Qc5 20. Bf1 Qxd4 21. Rxd4 Nc4 22. Nd5 Bxd5 23. exd5 b5 24. Rxe7 Nxb2 25. Rf4 f5 26. Rb4 Nd1 27. Rxb5 Rcb8 28. g3 Nc3 29. Rbb7 Rxb7 30. Rxb7 Rc8 31. Rb6 Nxd5 32. Rxd6 Nc3 33. Rd4 Kf7 34. Bd3 Ke7 35. Kf1 h5 36. h4 Ra8 37. Rb4 Kd6 38. Rb6+ Kc5 39. Rb7 Nd5 40. Rg7 Rb8 41. Rxg6 Rb1+ 42. Kg2 Ra1 43. Bxf5 Rxa3 44. Be6 Nb6 45. Rh6 Rc3 46. Rxh5+ Kb4 47. Rh7 a3 48. Rb7 Kc5 49. Rc7+ Kb4 50. Rxc3 Kxc3 51. Bb3 Nc4 52. h5 Nd2 53. Ba2 Ne4 54. h6 Nf6 55. Bb3 1-0

[Event "RSA-ch"]
[Site "Cape Town"]
[Date "2019.12.11"]
[Round "5"]
[White "Pon, Matt"]
[Black "Klaasen, Calvin Jong"]
[Result "1/2-1/2"]
[ECO "E92"]
[WhiteElo "2189"]
[BlackElo "2247"]
[PlyCount "41"]
[EventDate "2019.12.07"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "RSA"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. h3 e5 7. d5 a5 8. Bg5 Na6 9. Be2 Qe8 10. g4 Nd7 11. Nd2 Ndc5 12. a3 Bd7 13. Rg1 Kh8 14. Qc2 c6 15. a4 f5 16. Be3 Rc8 17. f3 Qe7 18. g5 fxe4 19. Ndxe4 Nb4 20. Qd1 Nxe4 21. fxe4 1/2-1/2

[Event "RSA-ch"]
[Site "Cape Town"]
[Date "2019.12.10"]
[Round "4"]
[White "Klaasen, Calvin Jong"]
[Black "Solomon, Kenny"]
[Result "0-1"]
[ECO "E15"]
[WhiteElo "2247"]
[BlackElo "2373"]
[PlyCount "76"]
[EventDate "2019.12.07"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "RSA"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 c6 5. d4 Bb4+ 6. Bd2 Be7 7. Qc2 b6 8. 0-0 0-0 9. b3 Ba6 10. Rd1 Nbd7 11. a4 Bd6 12. Bf4 Bxf4 13. gxf4 Qe7 14. Nbd2 c5 15. e3 Rfc8 16. Rdc1 Rab8 17. Qb2 dxc4 18. bxc4 Bb7 19. Qa3 Qd8 20. Qb2 Qc7 21. Nb3 Rd8 22. Qe2 a5 23. Qf1 Ne4 24. f5 exf5 25. d5 Ndf6 26. Nfd2 Ng4 27. f4 Nxe3 28. Qf3 Nxg2 29. Kxg2 Rd6 30. Nxe4 fxe4 31. Qe3 Rg6+ 32. Kh1 Rg4 33. Rf1 f5 34. Ra2 Ba6 35. Rc2 Rd8 36. Rff2 Qd7 37. Rg2 Rxg2 38. Rxg2 Bxc4 0-1

[Event "RSA-ch"]
[Site "Cape Town"]
[Date "2019.12.09"]
[Round "3"]
[White "Barrish, Daniel"]
[Black "Klaasen, Calvin Jong"]
[Result "1-0"]
[ECO "A53"]
[WhiteElo "2363"]
[BlackElo "2247"]
[PlyCount "69"]
[EventDate "2019.12.07"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "RSA"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. d5 Be7 5. e4 a5 6. Bd3 Na6 7. Nge2 Nd7 8. a3 Nb6 9. b3 Bg5 10. Bb2 0-0 11. h3 Bd7 12. g3 Nc5 13. h4 Bh6 14. b4 axb4 15. axb4 Rxa1 16. Bxa1 Nxd3+ 17. Qxd3 f5 18. c5 Qa8 19. 0-0 Na4 20. Qc4 Nxc3 21. Nxc3 Kh8 22. cxd6 cxd6 23. Qc7 Rd8 24. Qxd6 fxe4 25. Qxe5 e3 26. f4 Re8 27. Qd4 Qa6 28. Re1 e2 29. Kf2 Bg4 30. Ne4 Qg6 31. Nc5 Bh5 32. Ne6 Qg4 33. Kg2 Bg6 34. Nxg7 Re4 35. Nh5+ 1-0

[Event "RSA-ch"]
[Site "Cape Town"]
[Date "2019.12.08"]
[Round "2"]
[White "Klaasen, Calvin Jong"]
[Black "Khumalo, Keith"]
[Result "1-0"]
[ECO "E05"]
[WhiteElo "2247"]
[BlackElo "2148"]
[PlyCount "117"]
[EventDate "2019.12.07"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "RSA"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. g3 e6 4. Bg2 Be7 5. c4 dxc4 6. Nc3 c5 7. dxc5 Qxd1+ 8. Nxd1 Nbd7 9. Nd2 Ne5 10. Ne3 Bxc5 11. Nexc4 Nxc4 12. Nxc4 Bb4+ 13. Bd2 Bxd2+ 14. Kxd2 Ke7 15. Rhd1 Rb8 16. Ke1 b6 17. Rac1 Bd7 18. Nd6 Rhd8 19. Rc7 a5 20. Bc6 Nd5 21. Nf5+ Kf6 22. Rxd7 Kxf5 23. Rxf7+ Kg6 24. Rd7 Rxd7 25. Bxd7 Kf6 26. a3 Ke5 27. Bc6 Ne7 28. f4+ Kf6 29. Be4 h6 30. Rd6 g5 31. e3 Nf5 32. Bxf5 Kxf5 33. e4+ Kxe4 34. Rxe6+ Kf5 35. Rxh6 gxf4 36. gxf4 Kxf4 37. Kd2 Ke4 38. h4 Kd4 39. Rg6 Kc5 40. Rg2 Rh8 41. Rh2 Rh5 42. Ke3 Kc4 43. Kf4 Kb3 44. Kg4 Rh8 45. h5 b5 46. Kg5 b4 47. axb4 axb4 48. h6 Ka2 49. Kg6 b3 50. h7 Rc8 51. Kf6 Rc6+ 52. Ke5 Rc8 53. h8Q Rxh8 54. Rxh8 Kxb2 55. Kd4 Ka1 56. Kc3 b2 57. Ra8+ Kb1 58. Rb8 Ka1 59. Kc2 1-0

[Event "RSA-ch"]
[Site "Cape Town"]
[Date "2019.12.07"]
[Round "1"]
[White "Bhawoodien, Mohamed Ozayr"]
[Black "Klaasen, Calvin Jong"]
[Result "1/2-1/2"]
[ECO "B35"]
[WhiteElo "2129"]
[BlackElo "2247"]
[PlyCount "73"]
[EventDate "2019.12.07"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "RSA"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 Qa5 8. 0-0 0-0 9. Bb3 d6 10. h3 Bd7 11. Nf3 Rad8 12. Re1 Bc8 13. Bg5 e6 14. Qd2 Rd7 15. Rad1 a6 16. Na4 Qxd2 17. Rxd2 b5 18. Nb6 Rb7 19. Nxc8 Rxc8 20. Rxd6 Nd7 21. Red1 Ncb8 22. c3 h6 23. Be3 Kh7 24. Ne1 a5 25. a3 b4 26. cxb4 axb4 27. Ba4 Ne5 28. Rd8 Rxd8 29. Rxd8 Nc4 30. Bf4 bxa3 31. bxa3 Na6 32. Ra8 Nc5 33. Bc2 Bd4 34. a4 e5 35. Bc1 Nb3 36. Bxb3 Rxb3 37. Rc8 1/2-1/2

[Event "Africa-ch"]
[Site "Hammamet"]
[Date "2019.07.16"]
[Round "8"]
[White "Mesfin, Leykun"]
[Black "Klaasen, Calvin Jong"]
[Result "0-1"]
[ECO "B34"]
[WhiteElo "2160"]
[BlackElo "2285"]
[PlyCount "118"]
[EventDate "2019.07.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "TUN"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Qd2 0-0 8. 0-0-0 Ng4 9. h3 Nxe3 10. fxe3 d6 11. Kb1 a6 12. Bc4 Ne5 13. Bb3 b5 14. Rhf1 Bb7 15. Bd5 Qd7 16. b3 Rac8 17. Bxb7 Qxb7 18. Nd5 e6 19. Nf6+ Bxf6 20. Rxf6 Qxe4 21. Rdf1 Nd7 22. R6f4 Qe5 23. Nf3 Qc3 24. Qxc3 Rxc3 25. Ng5 f6 26. Nxe6 Re8 27. Kb2 Rcc8 28. Nd4 Rxe3 29. Rd1 f5 30. Rf2 Nc5 31. Re2 Rxe2 32. Nxe2 Ne4 33. Rd4 Kf7 34. a4 Rc5 35. Nf4 Kf6 36. Nd3 Rc8 37. axb5 axb5 38. Rb4 Nc3 39. Rf4 Nd1+ 40. Kc1 Ne3 41. Ne1 g5 42. Rb4 Rc5 43. Kd2 f4 44. Rd4 Ke6 45. c3 h6 46. g4 Re5 47. Rd3 Nf1+ 48. Kd1 Ng3 49. Nf3 Rc5 50. Nd4+ Kd7 51. Kd2 Ne4+ 52. Kc2 Re5 53. Nf5 h5 54. Rd4 hxg4 55. hxg4 f3 56. Rd1 f2 57. Rf1 Rxf5 58. gxf5 g4 59. Kd3 g3 0-1

[Event "Africa-ch"]
[Site "Hammamet"]
[Date "2019.07.15"]
[Round "7"]
[White "Klaasen, Calvin Jong"]
[Black "Sasha Winston, Onyiah"]
[Result "1-0"]
[ECO "E91"]
[WhiteElo "2285"]
[BlackElo "1968"]
[PlyCount "104"]
[EventDate "2019.07.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "TUN"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 Bg4 6. Be2 0-0 7. Be3 e5 8. d5 Bxf3 9. Bxf3 Ne8 10. 0-0 f5 11. h3 f4 12. Bd2 Qh4 13. Bg4 Na6 14. a3 h5 15. Bf3 Nf6 16. Kh2 Nh7 17. Be2 Ng5 18. f3 Qg3+ 19. Kh1 Nh7 20. Be1 Qg5 21. b4 h4 22. Bf2 Qh6 23. c5 Nf6 24. c6 Rad8 25. cxb7 Nb8 26. Nb5 Rf7 27. Rc1 g5 28. Qd3 a6 29. Nxc7 Rdd7 30. Ne6 Rxb7 31. Nd8 Kh7 32. Nxb7 Rxb7 33. Rc8 Nh5 34. Rfc1 Qf6 35. R1c7 Rxc7 36. Rxc7 Qd8 37. Rc1 Nd7 38. Qxa6 Nf8 39. Kg1 Ng3 40. Bd3 Ng6 41. Qc8 Qf6 42. b5 g4 43. Qxg4 Qd8 44. b6 Qa8 45. Bxg3 Qxa3 46. Qh5+ Kg8 47. Rc8+ Nf8 48. Bxh4 Qxd3 49. Kh2 Qb1 50. Be7 Qe1 51. Rxf8+ Bxf8 52. Qg6+ Bg7 1-0

[Event "Africa-ch"]
[Site "Hammamet"]
[Date "2019.07.13"]
[Round "5"]
[White "Klaasen, Calvin Jong"]
[Black "El Gindy, Essam"]
[Result "0-1"]
[ECO "E11"]
[WhiteElo "2285"]
[BlackElo "2423"]
[PlyCount "142"]
[EventDate "2019.07.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "TUN"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 0-0 5. a3 Be7 6. e4 d6 7. Be2 Nfd7 8. 0-0 e5 9. Nb1 exd4 10. Nxd4 Nc5 11. Nc3 a5 12. b3 Bf6 13. Be3 Re8 14. Qc2 Nc6 15. Ndb5 b6 16. Rab1 Bb7 17. f3 Bxc3 18. Nxc3 f5 19. b4 axb4 20. axb4 Ne6 21. Rfd1 fxe4 22. c5 exf3 23. Bxf3 Nxb4 24. Rxb4 Bxf3 25. gxf3 bxc5 26. Rg4 Qf6 27. Ne4 Qf5 28. Rg3 Kh8 29. Qc3 Re7 30. Kh1 Rf8 31. Rdg1 Rff7 32. Ng5 Nxg5 33. Bxg5 Re6 34. Bc1 Rg6 35. Bb2 Kg8 36. Ba1 Re7 37. Bb2 Qf7 38. Rxg6 hxg6 39. Rg3 Re2 40. Rg2 Re7 41. Rg3 Qf5 42. Ba3 Kh7 43. Rg1 Qd5 44. Bb2 Rf7 45. Rg3 Qd1+ 46. Kg2 Re7 47. Rh3+ Kg8 48. Qc4+ d5 49. Rh8+ Kxh8 50. Qh4+ Kg8 51. Qxe7 Qd2+ 52. Kg3 Qxb2 53. Qd8+ Kh7 54. Qh4+ Kg8 55. Qd8+ Kf7 56. Qd7+ Kf6 57. Qd8+ Ke6 58. Qe8+ Kd6 59. Qd8+ Kc6 60. Qa8+ Kd6 61. Qd8+ Kc6 62. Qa8+ Qb7 63. Qe8+ Kb6 64. Qxg6+ c6 65. h4 Qe7 66. h5 d4 67. f4 c4 68. Qb1+ Kc5 69. Qf5+ Kb6 70. Qb1+ Kc7 71. Qa2 Qc5 0-1

[Event "Africa-ch"]
[Site "Hammamet"]
[Date "2019.07.12"]
[Round "4"]
[White "Munenga, Douglas D"]
[Black "Klaasen, Calvin Jong"]
[Result "1-0"]
[ECO "B38"]
[WhiteElo "2329"]
[BlackElo "2285"]
[PlyCount "115"]
[EventDate "2019.07.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "TUN"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. c4 g6 4. d4 cxd4 5. Nxd4 Bg7 6. Be3 Nf6 7. Nc3 0-0 8. Be2 d6 9. 0-0 Bd7 10. Re1 Nxd4 11. Bxd4 Bc6 12. Bd3 a5 13. Qd2 Nd7 14. Bxg7 Kxg7 15. Re3 Nf6 16. Rh3 h5 17. Re3 a4 18. h3 Qa5 19. f4 e5 20. f5 Qc5 21. Rf1 h4 22. Kh2 Rh8 23. Ref3 Raf8 24. R3f2 Qd4 25. Ne2 Qc5 26. Nc3 Qd4 27. Bc2 Qc5 28. b3 Rh5 29. b4 Qxc4 30. fxg6 fxg6 31. b5 Bxb5 32. Qxd6 Qxf1 33. Rxf1 Bxf1 34. Bd1 Rg5 35. Bf3 Rf7 36. Nxa4 Bc4 37. a3 Nd7 38. Nc3 Nf6 39. Nd1 Rd7 40. Qb4 Ba6 41. Ne3 Rf7 42. a4 Nd7 43. Qd2 Rg3 44. Ng4 Rxg4 45. hxg4 Nb8 46. Qg5 Nc6 47. Qxh4 Kg8 48. Kg3 Rh7 49. Qf6 Rg7 50. g5 Kh7 51. Bg4 Bc4 52. Bc8 Ba6 53. Be6 Nd4 54. Bd5 Ne2+ 55. Kf3 Nc3 56. Be6 Bd3 57. Qxe5 Nxa4 58. Qh2# 1-0

[Event "Africa-ch"]
[Site "Hammamet"]
[Date "2019.07.11"]
[Round "3"]
[White "Klaasen, Calvin Jong"]
[Black "Fawzy, Adham"]
[Result "1/2-1/2"]
[ECO "D23"]
[WhiteElo "2285"]
[BlackElo "2476"]
[PlyCount "113"]
[EventDate "2019.07.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "TUN"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Qb3 dxc4 5. Qxc4 Bf5 6. g3 e6 7. Bg2 Be7 8. 0-0 0-0 9. e3 Nbd7 10. Qe2 c5 11. Rd1 Qb6 12. Nc3 Ne4 13. Ne1 Ndf6 14. f3 Nxc3 15. bxc3 Nd5 16. Bd2 Qb2 17. Nd3 Qc2 18. Bf1 Nxc3 19. Bxc3 Qxc3 20. Nxc5 Rac8 21. Ne4 Qa3 22. Rd3 Qa4 23. Rb3 b6 24. Qd2 Qc6 25. Ba6 Bxe4 26. fxe4 Qc2 27. Rd1 Qxd2 28. Rxd2 Rc1+ 29. Kg2 Rd8 30. e5 Rd5 31. Bb5 Bg5 32. a4 f6 33. exf6 Bxf6 34. Rbd3 e5 35. dxe5 Rxe5 36. Re2 Rc7 37. Rd7 Rxd7 38. Bxd7 a6 39. Kf3 b5 40. axb5 axb5 41. e4 b4 42. Bc6 Ra5 43. Bd5+ Kf8 44. Ra2 Rb5 45. Bb3 Rc5 46. Rc2 Bc3 47. Ke3 Ke7 48. Kd3 Rc7 49. Rf2 Bf6 50. Rc2 Rd7+ 51. Ke2 Bc3 52. Ra2 Rd4 53. Ke3 Rd8 54. Bd5 Rf8 55. Bc4 Kd6 56. Ra5 Kc6 57. g4 1/2-1/2

[Event "Pretoria Capablanca Memorial"]
[Site "Pretoria"]
[Date "2019.04.22"]
[Round "8"]
[White "Beukes, Dante M"]
[Black "Klaasen, Calvin Jong"]
[Result "0-1"]
[ECO "B31"]
[WhiteElo "2117"]
[BlackElo "2282"]
[PlyCount "70"]
[EventDate "2019.04.18"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "RSA"]
[EventCategory "1"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 dxc6 5. d3 Bg7 6. h3 Nf6 7. Nc3 Nd7 8. 0-0 e5 9. Be3 b6 10. Qd2 h6 11. Nh2 Nf8 12. f4 exf4 13. Rxf4 Be6 14. a3 Qd6 15. Rff1 g5 16. Nf3 Ng6 17. Rad1 Ne5 18. Nxe5 Bxe5 19. d4 cxd4 20. Bxd4 0-0-0 21. Bxe5 Qxe5 22. Qf2 h5 23. Qf6 Qxf6 24. Rxf6 Rxd1+ 25. Nxd1 Rd8 26. Nc3 h4 27. Kf1 Kc7 28. Ke2 Kd6 29. Ke3 Ke5 30. Rf1 Rd4 31. Rf2 c5 32. Rf1 a6 33. Rd1 b5 34. b3 f6 35. Ra1 Bc8 0-1

[Event "Pretoria Capablanca Memorial"]
[Site "Pretoria"]
[Date "2019.04.22"]
[Round "9"]
[White "Klaasen, Calvin Jong"]
[Black "Grover, Sahaj"]
[Result "0-1"]
[ECO "E10"]
[WhiteElo "2282"]
[BlackElo "2511"]
[PlyCount "92"]
[EventDate "2019.04.18"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "RSA"]
[EventCategory "1"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 Nc6 4. a3 d6 5. Nc3 g6 6. e4 Bg7 7. Be2 0-0 8. 0-0 a5 9. Be3 a4 10. d5 Ne7 11. Nd4 c6 12. dxe6 fxe6 13. e5 dxe5 14. Nf3 Qa5 15. b4 axb3 16. Qxb3 e4 17. Bb6 Qf5 18. Nd4 Qf4 19. g3 Qb8 20. Nc2 Nd7 21. Be3 Nf5 22. Bf4 Nc5 23. Qb4 e5 24. Bg5 Nd3 25. Qb1 Nc5 26. Qb6 Qa7 27. Qxa7 Rxa7 28. g4 Ne6 29. Nxe4 Nxg5 30. Nxg5 Nd4 31. Nxd4 exd4 32. Ra2 Be5 33. Nf3 Bf6 34. Nd2 Be6 35. f4 Be7 36. Ne4 b5 37. Rd2 Rxa3 38. Rxd4 Ra2 39. Rd2 Rxd2 40. Nxd2 Bc5+ 41. Kg2 Be3 42. Ne4 bxc4 43. Kg3 Bd5 44. Nc3 Bd2 45. Nb1 Re8 46. Bd1 Be1+ 0-1

[Event "Pretoria Capablanca Memorial"]
[Site "Pretoria"]
[Date "2019.04.21"]
[Round "6"]
[White "Klaasen, Calvin Jong"]
[Black "Bezuidenhout, Roland Reinhold"]
[Result "1/2-1/2"]
[ECO "D27"]
[WhiteElo "2282"]
[BlackElo "2171"]
[PlyCount "120"]
[EventDate "2019.04.18"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "RSA"]
[EventCategory "1"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. e3 dxc4 6. Bxc4 a6 7. a4 Nc6 8. 0-0 Be7 9. Qe2 0-0 10. Rd1 Qc7 11. Bd2 Bd7 12. Rac1 Rac8 13. d5 exd5 14. Nxd5 Nxd5 15. Bxd5 b5 16. axb5 axb5 17. b3 b4 18. h3 Qb6 19. Be1 Bf6 20. Nd2 Ne7 21. Ne4 Bf5 22. Qf3 Bxe4 23. Qxe4 Nxd5 24. Rxd5 Rfd8 25. Rxd8+ Rxd8 26. Qc4 h6 27. Kf1 Be7 28. Rc2 Qg6 29. Rd2 Rxd2 30. Bxd2 Qb1+ 31. Ke2 Qb2 32. Kd3 Qb1+ 33. Ke2 Qb2 34. Qd5 Bf6 35. Kd1 Qb1+ 36. Ke2 Qb2 37. Kd1 Qb1+ 38. Bc1 g6 39. Qc4 Bc3 40. f3 Qa2 41. g4 Qg2 42. Qe2 Qxe2+ 43. Kxe2 c4 44. bxc4 b3 45. Kd3 b2 46. Bxb2 Bxb2 47. c5 Kf8 48. Kc4 Ke7 49. Kd5 Kd7 50. e4 g5 51. c6+ Kc7 52. e5 Bc3 53. e6 fxe6+ 54. Kxe6 Kxc6 55. Kf5 Kd6 56. f4 Bd2 57. fxg5 hxg5 58. Kg6 Ke5 59. Kh5 Kf6 60. h4 gxh4 1/2-1/2

[Event "Pretoria Capablanca Memorial"]
[Site "Pretoria"]
[Date "2019.04.21"]
[Round "7"]
[White "Mwale, Joseph"]
[Black "Klaasen, Calvin Jong"]
[Result "1/2-1/2"]
[ECO "A39"]
[WhiteElo "2281"]
[BlackElo "2282"]
[PlyCount "49"]
[EventDate "2019.04.18"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "RSA"]
[EventCategory "1"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. d4 cxd4 5. Nxd4 Bg7 6. Nb3 d6 7. 0-0 Nf6 8. c4 0-0 9. Nc3 a6 10. c5 dxc5 11. Nxc5 Qa5 12. Nd3 Bf5 13. Qa4 Qxa4 14. Nxa4 Nd4 15. Nc3 Nxe2+ 16. Nxe2 Bxd3 17. Re1 Be4 18. Bxe4 Nxe4 19. Nf4 f5 20. Ne6 Rf7 21. f3 Nd6 22. Ng5 Rff8 23. Ne6 Rf7 24. Ng5 Rff8 25. Ne6 1/2-1/2

[Event "Pretoria Capablanca Memorial"]
[Site "Pretoria"]
[Date "2019.04.20"]
[Round "5"]
[White "Khumalo, Keith"]
[Black "Klaasen, Calvin Jong"]
[Result "1/2-1/2"]
[ECO "E70"]
[WhiteElo "2030"]
[BlackElo "2282"]
[PlyCount "127"]
[EventDate "2019.04.18"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "RSA"]
[EventCategory "1"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Bd3 0-0 6. Nge2 Nc6 7. 0-0 e5 8. d5 Nd4 9. Nxd4 exd4 10. Ne2 Re8 11. f3 c5 12. Bg5 Qc7 13. Qd2 Nd7 14. f4 Nf6 15. Bxf6 Bxf6 16. f5 Qe7 17. Ng3 Bd7 18. Qf2 Be5 19. f6 Qf8 20. Qd2 h5 21. Ne2 Kh7 22. Qg5 Qh6 23. h4 Rab8 24. a4 a6 25. g3 Rh8 26. Kg2 Kg8 27. Rh1 Kf8 28. Ng1 Ke8 29. Nf3 Qxg5 30. hxg5 Kd8 31. Rhb1 b6 32. b3 Re8 33. Ra2 Kc7 34. Rc1 Bg4 35. Nh2 Rh8 36. Raa1 Rh7 37. Rh1 Rbh8 38. Rae1 Bd7 39. Nf3 Rb8 40. Ra1 Kb7 41. Rhb1 Kc7 42. Rc1 Ra8 43. Rh1 Rhh8 44. Ra2 Rhb8 45. Rha1 Rb7 46. Rf1 Rab8 47. Rc1 Re8 48. Rca1 Reb8 49. Rc1 Ra8 50. Rcc2 Raa7 51. Rab2 Kb8 52. Ra2 Kc8 53. Ra1 Kc7 54. Raa2 Kb8 55. Bf1 Bg4 56. Bd3 Kc7 57. Nh2 Ra8 58. Rc1 Bd7 59. Nf3 Kb8 60. Rca1 Raa7 61. Rc1 Bg4 62. Nh2 Bd7 63. Nf3 Rc7 64. Rca1 1/2-1/2

[Event "Pretoria Capablanca Memorial"]
[Site "Pretoria"]
[Date "2019.04.20"]
[Round "4"]
[White "Klaasen, Calvin Jong"]
[Black "Cawdery, Daniel"]
[Result "1/2-1/2"]
[ECO "D90"]
[WhiteElo "2282"]
[BlackElo "2434"]
[PlyCount "15"]
[EventDate "2019.04.18"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "RSA"]
[EventCategory "1"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. Bd2 Nb6 6. Nf3 Bg7 7. Bg5 0-0 8. Rc1 1/2-1/2

[Event "Pretoria Capablanca Memorial"]
[Site "Pretoria"]
[Date "2019.04.19"]
[Round "2"]
[White "Klaasen, Calvin Jong"]
[Black "Barrish, Daniel"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2282"]
[BlackElo "2181"]
[PlyCount "146"]
[EventDate "2019.04.18"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "RSA"]
[EventCategory "1"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. Bf4 e6 4. e3 Bd6 5. Nbd2 Bxf4 6. exf4 b6 7. c3 0-0 8. Bd3 Ba6 9. Bxa6 Nxa6 10. Qe2 Qc8 11. a3 c5 12. 0-0 Nc7 13. Rfe1 Nce8 14. Rac1 Nd6 15. c4 Qa6 16. dxc5 bxc5 17. cxd5 Qxe2 18. Rxe2 Nxd5 19. g3 Rab8 20. Nc4 Nb7 21. Nce5 Rbc8 22. Rec2 Rc7 23. Nd3 Rfc8 24. Nd2 f6 25. b3 Nb6 26. Ne4 Nd7 27. Rc3 Kf8 28. Kf1 Ke7 29. Ke2 Nd6 30. Nxd6 Kxd6 31. Nb2 Nb6 32. Nc4+ Nxc4 33. Rxc4 Rb8 34. R1c3 Rc6 35. Kd2 Rb7 36. Rd3+ Ke7 37. Ra4 Rd6 38. Rxd6 Kxd6 39. Kc3 Kd5 40. Ra5 Rc7 41. Kd3 Rd7 42. Ra6 Rb7 43. Kc3 Rd7 44. f3 h6 45. Ra5 Rc7 46. Kd3 Rd7 47. Kc3 Rc7 48. Ra4 Re7 49. Re4 Rb7 50. Re3 Rb8 51. Rd3+ Kc6 52. Kc4 g6 53. h4 h5 54. Re3 Kd6 55. Re4 Re8 56. Re3 Rb8 57. Re4 Re8 58. Kc3 Kc6 59. Ra4 Kb6 60. Re4 Kc6 61. Kc4 Kd6 62. Re2 Rb8 63. Rg2 Rh8 64. Rg1 Kc6 65. Re1 Kd6 66. Ra1 Kc6 67. b4 cxb4 68. axb4 Kb7 69. Re1 Rc8+ 70. Kb5 a6+ 71. Ka4 Rc6 72. Re3 Rd6 73. Kb3 Kb6 1/2-1/2

[Event "Pretoria Capablanca Memorial"]
[Site "Pretoria"]
[Date "2019.04.19"]
[Round "3"]
[White "Makoto, Rodwell"]
[Black "Klaasen, Calvin Jong"]
[Result "1/2-1/2"]
[ECO "A25"]
[WhiteElo "2368"]
[BlackElo "2282"]
[PlyCount "65"]
[EventDate "2019.04.18"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "RSA"]
[EventCategory "1"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. c4 g6 2. g3 Bg7 3. Bg2 d6 4. Nc3 Nf6 5. e3 0-0 6. Nge2 e5 7. 0-0 Re8 8. d3 Nc6 9. Rb1 a5 10. a3 Bg4 11. h3 Be6 12. Nd5 Qd7 13. Kh2 h5 14. f4 Nh7 15. Nec3 f5 16. b4 axb4 17. axb4 Rab8 18. Bd2 Kh8 19. Ra1 Nd8 20. Ne2 c6 21. Nb6 Qc7 22. c5 Nf7 23. d4 Nf6 24. dxe5 dxe5 25. Bc3 Rbd8 26. Qc2 Nd5 27. Nxd5 Bxd5 28. fxe5 Kh7 29. Bxd5 cxd5 30. Nf4 Nxe5 31. Rae1 Qc6 32. Bd4 Nc4 33. Qc3 1/2-1/2

[Event "Pretoria Capablanca Memorial"]
[Site "Pretoria"]
[Date "2019.04.18"]
[Round "1"]
[White "Hercules, Benjamin Vincent"]
[Black "Klaasen, Calvin Jong"]
[Result "0-1"]
[ECO "E73"]
[WhiteElo "2162"]
[BlackElo "2282"]
[PlyCount "74"]
[EventDate "2019.04.18"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "RSA"]
[EventCategory "1"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 0-0 6. Bg5 Na6 7. Qd2 e5 8. d5 Qe8 9. f3 Nh5 10. g3 f6 11. Be3 f5 12. exf5 gxf5 13. 0-0-0 Bd7 14. Bd3 Nc5 15. Bc2 b6 16. Nge2 Kh8 17. f4 Nf6 18. fxe5 dxe5 19. h3 c6 20. d6 Be6 21. Rhf1 Nfd7 22. Bg5 e4 23. Nd4 Ne5 24. Be7 Ned3+ 25. Bxd3 Nxd3+ 26. Kb1 Bxd4 27. Nxe4 fxe4 28. Rxf8+ Qxf8 29. Bxf8 Rxf8 30. d7 Bxd7 31. Qh6 Bg7 32. Qd6 Be8 33. Kc2 Bg6 34. h4 Nxb2 35. h5 Bxh5 36. Rd4 c5 37. Rd5 Nxc4 0-1

[Event "Olympiad-43"]
[Site "Batumi"]
[Date "2018.10.05"]
[Round "11.2"]
[White "Ayyad, Maher"]
[Black "Klaasen, Calvin Jong"]
[Result "0-1"]
[ECO "E18"]
[WhiteElo "2106"]
[BlackElo "2262"]
[PlyCount "86"]
[EventDate "2018.09.24"]
[EventType "team-swiss"]
[EventRounds "11"]
[EventCountry "GEO"]
[SourceTitle "CBM 187"]
[Source "ChessBase"]
[SourceDate "2018.12.11"]
[SourceVersion "1"]
[SourceVersionDate "2018.12.11"]
[SourceQuality "1"]
[WhiteTeam "Bahrain"]
[BlackTeam "South Africa"]
[WhiteTeamCountry "BHN"]
[BlackTeamCountry "RSA"]

1. d4 Nf6 2. Nf3 b6 3. g3 Bb7 4. Bg2 e6 5. 0-0 Be7 6. c4 0-0 7. Nc3 Ne4 8. Nxe4 Bxe4 9. Nh4 Bxg2 10. Nxg2 f5 11. Qc2 Bf6 12. Rd1 Qe7 13. e4 fxe4 14. Qxe4 Nc6 15. d5 exd5 16. Qxd5+ Kh8 17. Rb1 Qf7 18. Be3 Ne5 19. Qxf7 Rxf7 20. b3 Re8 21. h3 Nf3+ 22. Kf1 Be5 23. Bf4 g5 24. Bxe5+ Rxe5 25. Ne1 Ref5 26. Nxf3 Rxf3 27. Rb2 Rxg3 28. Rxd7 Rg1+ 29. Kxg1 Rxd7 30. Kg2 Kg7 31. Re2 Kf6 32. Kf3 h5 33. Ke3 Kf5 34. Rd2 Rxd2 35. Kxd2 Kf4 36. Ke2 h4 37. Ke1 g4 38. hxg4 Kxg4 39. Kf1 Kf3 40. Kg1 c5 41. Kf1 h3 42. Kg1 h2+ 43. Kxh2 Kxf2 0-1

[Event "Olympiad-43"]
[Site "Batumi"]
[Date "2018.10.04"]
[Round "10.2"]
[White "Klaasen, Calvin Jong"]
[Black "Vazquez, Guillermo"]
[Result "0-1"]
[ECO "E20"]
[WhiteElo "2262"]
[BlackElo "2468"]
[PlyCount "126"]
[EventDate "2018.09.24"]
[EventType "team-swiss"]
[EventRounds "11"]
[EventCountry "GEO"]
[SourceTitle "CBM 187"]
[Source "ChessBase"]
[SourceDate "2018.12.11"]
[SourceVersion "1"]
[SourceVersionDate "2018.12.11"]
[SourceQuality "1"]
[WhiteTeam "South Africa"]
[BlackTeam "Paraguay"]
[WhiteTeamCountry "RSA"]
[BlackTeamCountry "PAR"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Nc3 dxc4 6. Bg2 0-0 7. 0-0 Nc6 8. a3 Be7 9. e4 a6 10. Bf4 b5 11. d5 exd5 12. exd5 Na5 13. Qc2 Bd6 14. Ne5 Nh5 15. Nc6 Nxc6 16. Bxd6 Nd4 17. Qd1 cxd6 18. Qxd4 Nf6 19. a4 Bd7 20. h3 Re8 21. g4 h6 22. Kh1 Rb8 23. a5 Rb7 24. Kg1 Bc8 25. Qf4 Rbe7 26. Na2 Bb7 27. Nb4 Qc7 28. Qd4 Qc5 29. Qxc5 dxc5 30. Nc6 Rc7 31. Rfe1 Rxe1+ 32. Rxe1 Kf8 33. Rd1 Rd7 34. Ne5 Rd6 35. h4 g5 36. Kh2 Bxd5 37. f4 Ke7 38. Re1 Bxg2 39. Kxg2 gxf4 40. Kf3 Kf8 41. Kxf4 Kg7 42. Nf3 Rd3 43. g5 hxg5+ 44. Nxg5 c3 45. bxc3 Rxc3 46. Ke5 Ng4+ 47. Kd6 c4 48. Kc5 Rd3 49. Kb4 Ne3 50. Rg1 Rb3+ 51. Kc5 c3 52. Ne6+ Kh6 53. Nd4 Rb2 54. Kb6 c2 55. Kxa6 b4 56. Nxc2 Rxc2 57. Kb7 Nc4 58. a6 Na5+ 59. Kb6 Nc6 60. Rf1 b3 61. Rf3 b2 62. Rb3 f5 63. Kb5 Nd4+ 0-1

[Event "Olympiad-43"]
[Site "Batumi"]
[Date "2018.10.02"]
[Round "8.3"]
[White "Klaasen, Calvin Jong"]
[Black "Prasitsoonthorn, Teerachoti"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "2262"]
[BlackElo "1830"]
[PlyCount "79"]
[EventDate "2018.09.24"]
[EventType "team-swiss"]
[EventRounds "11"]
[EventCountry "GEO"]
[SourceTitle "CBM 187"]
[Source "ChessBase"]
[SourceDate "2018.12.11"]
[SourceVersion "1"]
[SourceVersionDate "2018.12.11"]
[SourceQuality "1"]
[WhiteTeam "South Africa"]
[BlackTeam "Thailand"]
[WhiteTeamCountry "RSA"]
[BlackTeamCountry "THA"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 Nd4 4. Bc4 g6 5. Nf3 Bg7 6. Nxd4 cxd4 7. Qf3 e6 8. Nb5 d6 9. Qa3 Ke7 10. c3 dxc3 11. dxc3 a6 12. Be2 Rb8 13. Nd4 Qc7 14. Be3 e5 15. Nf3 Be6 16. 0-0 h5 17. Rfd1 Rd8 18. c4 Nh6 19. Qb4 Rc8 20. Rac1 a5 21. Qb5 Ng4 22. Bb6 Qc6 23. Qxc6 bxc6 24. Bxa5 Ra8 25. Bc7 Rxa2 26. Bxd6+ Ke8 27. Ra1 Rxa1 28. Rxa1 f6 29. c5 Bf8 30. Ra8+ Kf7 31. Ra7+ Ke8 32. b4 Bd7 33. Bc4 Be7 34. Ra8+ Bd8 35. Nh4 f5 36. Nxg6 Rh6 37. exf5 Bxf5 38. Nh4 Be6 39. Bxe6 Rxe6 40. Bc7 1-0

[Event "Olympiad-43"]
[Site "Batumi"]
[Date "2018.10.01"]
[Round "7.13"]
[White "Klaasen, Calvin Jong"]
[Black "Dastan, Batuhan Muhammed"]
[Result "1-0"]
[ECO "A85"]
[WhiteElo "2262"]
[BlackElo "2569"]
[PlyCount "71"]
[EventDate "2018.09.24"]
[EventType "team-swiss"]
[EventRounds "11"]
[EventCountry "GEO"]
[SourceTitle "CBM 187"]
[Source "ChessBase"]
[SourceDate "2018.12.11"]
[SourceVersion "1"]
[SourceVersionDate "2018.12.11"]
[SourceQuality "1"]
[WhiteTeam "South Africa"]
[BlackTeam "Turkey"]
[WhiteTeamCountry "RSA"]
[BlackTeamCountry "TUR"]

1. d4 f5 2. c4 Nf6 3. Nc3 d6 4. Nf3 g6 5. Bf4 Bg7 6. e3 h6 7. c5 g5 8. Bg3 c6 9. Bc4 b5 10. Bb3 a5 11. a3 Na6 12. 0-0 dxc5 13. Ne5 c4 14. Bc2 Nb8 15. Ng6 Rg8 16. Ne5 h5 17. h4 gxh4 18. Bxh4 Ng4 19. Qf3 Bxe5 20. dxe5 Qc7 21. Bg3 h4 22. Bf4 e6 23. e4 Qg7 24. exf5 exf5 25. Nxb5 h3 26. Nd6+ Ke7 27. Nxc8+ Rxc8 28. Bxf5 hxg2 29. Bxc8 gxf1Q+ 30. Kxf1 Nd7 31. Bxd7 Kxd7 32. Rd1+ Kc7 33. e6+ Kb6 34. e7 c3 35. Rd6 Rc8 36. e8Q 1-0

[Event "Olympiad-43"]
[Site "Batumi"]
[Date "2018.09.30"]
[Round "6.40"]
[White "Al Hosani, Omran"]
[Black "Klaasen, Calvin Jong"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "2115"]
[BlackElo "2262"]
[PlyCount "100"]
[EventDate "2018.09.24"]
[EventType "team-swiss"]
[EventRounds "11"]
[EventCountry "GEO"]
[SourceTitle "CBM 187"]
[Source "ChessBase"]
[SourceDate "2018.12.11"]
[SourceVersion "1"]
[SourceVersionDate "2018.12.11"]
[SourceQuality "1"]
[WhiteTeam "United Arab Emirates"]
[BlackTeam "South Africa"]
[WhiteTeamCountry "UAE"]
[BlackTeamCountry "RSA"]

1. d4 d6 2. e4 Nf6 3. Nc3 g6 4. Bf4 Bg7 5. Qd2 0-0 6. 0-0-0 c6 7. Bh6 b5 8. Bxg7 Kxg7 9. f3 Qc7 10. g4 e5 11. h4 h5 12. g5 Nh7 13. f4 exf4 14. Qxf4 f6 15. Qg3 fxg5 16. hxg5 Qe7 17. Kb1 b4 18. Nce2 Nxg5 19. Bg2 Bg4 20. e5 d5 21. Re1 Na6 22. Nf4 Nc7 23. Ngh3 Nce6 24. Nxg5 Nxg5 25. e6 Qf6 26. e7 Qxf4 27. exf8Q+ Rxf8 28. Re7+ Kh6 29. Qe1 Qxd4 30. Rb7 a5 31. Rc7 Qf2 32. Rf1 Qxe1+ 33. Rxe1 Rf6 34. Ra7 Rf2 35. Bh1 Bf5 36. Rxa5 Rxc2 37. Ka1 Ne4 38. Ra4 c5 39. Bxe4 Bxe4 40. a3 bxa3 41. bxa3 h4 42. Ra8 Kg5 43. Rh8 Kg4 44. a4 h3 45. Rg1+ Rg2 46. Rh1 Ra2+ 47. Kxa2 Bxh1 48. a5 d4 49. a6 Kg3 50. a7 Bd5+ 0-1

[Event "Olympiad-43"]
[Site "Batumi"]
[Date "2018.09.27"]
[Round "4.58"]
[White "Lorne, Ras Malaku"]
[Black "Klaasen, Calvin Jong"]
[Result "1/2-1/2"]
[ECO "B07"]
[WhiteElo "2161"]
[BlackElo "2262"]
[PlyCount "199"]
[EventDate "2018.09.24"]
[EventType "team-swiss"]
[EventRounds "11"]
[EventCountry "GEO"]
[SourceTitle "CBM 187"]
[Source "ChessBase"]
[SourceDate "2018.12.11"]
[SourceVersion "1"]
[SourceVersionDate "2018.12.11"]
[SourceQuality "1"]
[WhiteTeam "Jamaica"]
[BlackTeam "South Africa"]
[WhiteTeamCountry "JAM"]
[BlackTeamCountry "RSA"]

1. d4 g6 2. e4 Bg7 3. g3 d6 4. Bg2 Nf6 5. Ne2 0-0 6. 0-0 e5 7. Nbc3 c6 8. h3 b5 9. a3 Bb7 10. Be3 Nbd7 11. f4 exd4 12. Bxd4 Re8 13. g4 c5 14. Bxf6 Nxf6 15. Nxb5 Nxe4 16. c4 a6 17. Nbc3 Nxc3 18. bxc3 Bxg2 19. Kxg2 Rb8 20. Ra2 Qe7 21. Qd3 Qe4+ 22. Rf3 Rb3 23. a4 a5 24. Rd2 Qc6 25. f5 Bh6 26. fxg6 hxg6 27. Rc2 Re3 28. Qd5 Qxd5 29. cxd5 Re4 30. Ra2 Bg7 31. Kf2 Be5 32. Rd3 c4 33. Re3 Rxe3 34. Kxe3 Bxc3 35. Nxc3 Rxc3+ 36. Kd4 Rxh3 37. Kxc4 Rg3 38. Kb5 Rxg4 39. Kxa5 Rd4 40. Kb6 Rxd5 41. a5 Re5 42. a6 Re8 43. a7 f5 44. a8Q Rxa8 45. Rxa8+ Kf7 46. Kc6 Ke6 47. Re8+ Kf6 48. Kxd6 Kg5 49. Ke5 Kg4 50. Rf8 Kf3 51. Rf6 Ke3 52. Rxg6 f4 53. Ra6 f3 54. Ra3+ Ke2 55. Ke4 f2 56. Ra2+ Ke1 57. Ke3 f1N+ 58. Kd3 Ng3 59. Rg2 Nf1 60. Re2+ Kd1 61. Re8 Ng3 62. Ke3 Nf1+ 63. Kf2 Nd2 64. Rc8 Nb3 65. Ke3 Nc1 66. Rc3 Ne2 67. Rd3+ Ke1 68. Rd2 Ng3 69. Rg2 Nf1+ 70. Kd3 Kd1 71. Rf2 Ke1 72. Re2+ Kd1 73. Ra2 Ke1 74. Rb2 Ng3 75. Rh2 Nf1 76. Rg2 Kd1 77. Re2 Ng3 78. Rf2 Ke1 79. Rf3 Nf1 80. Rf8 Ng3 81. Rf7 Nf1 82. Rf3 Nd2 83. Re3+ Kd1 84. Re7 Nf3 85. Ke3 Ne1 86. Rc7 Nc2+ 87. Kd3 Ne1+ 88. Kc3 Ke2 89. Re7+ Kf2 90. Rf7+ Ke2 91. Rf8 Nf3 92. Re8+ Kf2 93. Kd3 Ne1+ 94. Ke4 Ke2 95. Rd8 Nf3 96. Rd3 Nd2+ 97. Kd4 Nf3+ 98. Kc3 Ne1 99. Rh3 Nf3 100. Rxf3 1/2-1/2

[Event "Olympiad-43"]
[Site "Batumi"]
[Date "2018.09.26"]
[Round "3.25"]
[White "Klaasen, Calvin Jong"]
[Black "Kostenko, Petr"]
[Result "1-0"]
[ECO "E01"]
[WhiteElo "2262"]
[BlackElo "2459"]
[PlyCount "189"]
[EventDate "2018.09.24"]
[EventType "team-swiss"]
[EventRounds "11"]
[EventCountry "GEO"]
[SourceTitle "CBM 187"]
[Source "ChessBase"]
[SourceDate "2018.12.11"]
[SourceVersion "1"]
[SourceVersionDate "2018.12.11"]
[SourceQuality "1"]
[WhiteTeam "South Africa"]
[BlackTeam "Kazakhstan"]
[WhiteTeamCountry "RSA"]
[BlackTeamCountry "KAZ"]

1. d4 e6 2. c4 Nf6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 Bd6 6. Bg2 0-0 7. 0-0 Nbd7 8. Qc2 c6 9. Bg5 h6 10. Bxf6 Qxf6 11. Nc3 Qe7 12. e4 dxc4 13. Nd2 e5 14. d5 Nb6 15. dxc6 bxc6 16. Nd1 Ba6 17. Re1 Rfd8 18. Ne3 Bb4 19. Red1 Qe6 20. Bf1 Rd4 21. Nf3 Rxd1 22. Rxd1 Bc5 23. Qc3 Bb5 24. Rc1 Na4 25. Qxe5 Qxe5 26. Nxe5 Bxe3 27. fxe3 Nxb2 28. Nxc4 Nxc4 29. Bxc4 Rb8 30. Bb3 a5 31. Kf2 a4 32. Bc2 Kf8 33. Ke1 Ke7 34. Kd2 Rd8+ 35. Kc3 Rd6 36. Rd1 Rxd1 37. Bxd1 c5 38. Kb2 Kd6 39. Ka3 Bc6 40. Bxa4 Bxe4 41. Bb3 f6 42. Kb2 Kc6 43. Kc3 Kb5 44. a4+ Kc6 45. Bc2 Bd5 46. Bd3 Kb6 47. Bc2 Be6 48. Bb3 Bh3 49. Bd5 Bd7 50. Bb3 Kc6 51. Bd1 g5 52. Be2 Kb6 53. Bd1 Bh3 54. Be2 Be6 55. Bb5 Ka5 56. Be8 Bd5 57. Bb5 Kb6 58. Be8 Kc7 59. a5 Kd6 60. Bb5 Ke5 61. Bd7 Bf3 62. Bc8 Kd6 63. Bf5 Kc6 64. Bd3 Bg4 65. Bf1 Be6 66. Bc4 Bc8 67. Be2 Kc7 68. Bb5 Be6 69. Bc4 Bd7 70. Be2 Be6 71. Bf3 Bf7 72. Ba8 Kb8 73. Bc6 Ka7 74. e4 Ka6 75. Bd5 Bg6 76. Kc4 Kxa5 77. Kxc5 f5 78. exf5 Bxf5 79. Bf7 Bg4 80. Kd4 Kb4 81. Ke5 h5 82. Kf6 h4 83. Kxg5 hxg3 84. hxg3 Bh3 85. Kf6 Bg4 86. Kg5 Bh3 87. Bg6 Kc5 88. Bf5 Bf1 89. Kf4 Be2 90. Be4 Kd6 91. Bf3 Bd3 92. g4 Ke6 93. Kg5 Kf7 94. Kh6 Bc4 95. Be4 1-0

[Event "Olympiad-43"]
[Site "Batumi"]
[Date "2018.09.25"]
[Round "2.3"]
[White "Skoberne, Jure"]
[Black "Klaasen, Calvin Jong"]
[Result "1-0"]
[ECO "D78"]
[WhiteElo "2565"]
[BlackElo "2262"]
[PlyCount "49"]
[EventDate "2018.09.24"]
[EventType "team-swiss"]
[EventRounds "11"]
[EventCountry "GEO"]
[SourceTitle "CBM 187"]
[Source "ChessBase"]
[SourceDate "2018.12.11"]
[SourceVersion "1"]
[SourceVersionDate "2018.12.11"]
[SourceQuality "1"]
[WhiteTeam "Slovenia"]
[BlackTeam "South Africa"]
[WhiteTeamCountry "SLO"]
[BlackTeamCountry "RSA"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. g3 0-0 5. Bg2 c6 6. 0-0 d5 7. Qb3 dxc4 8. Qxc4 Be6 9. Qc2 Bf5 10. Qb3 Qb6 11. Nbd2 Nbd7 12. Re1 Ne4 13. e3 Nxd2 14. Nxd2 e5 15. e4 Be6 16. d5 cxd5 17. exd5 Bf5 18. Nc4 Qxb3 19. axb3 Nc5 20. Be3 Nd3 21. Re2 Rfd8 22. Bxa7 e4 23. Bxe4 Bd4 24. Bxf5 Nxf2 25. Bxd4 1-0

[Event "Olympiad-43"]
[Site "Batumi"]
[Date "2018.09.24"]
[Round "1.85"]
[White "Klaasen, Calvin Jong"]
[Black "Britus, Samuel Gabius"]
[Result "1-0"]
[ECO "D11"]
[WhiteElo "2262"]
[PlyCount "109"]
[EventDate "2018.09.24"]
[EventType "team-swiss"]
[EventRounds "11"]
[EventCountry "GEO"]
[SourceTitle "CBM 187"]
[Source "ChessBase"]
[SourceDate "2018.12.11"]
[SourceVersion "1"]
[SourceVersionDate "2018.12.11"]
[SourceQuality "1"]
[WhiteTeam "South Africa"]
[BlackTeam "Haiti"]
[WhiteTeamCountry "RSA"]
[BlackTeamCountry "HAI"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Qc2 Bg4 5. Ne5 Bh5 6. cxd5 Nxd5 7. a3 Nd7 8. e4 N5b6 9. Nxd7 Qxd7 10. Be3 Bg6 11. Nc3 e6 12. Bd3 Be7 13. 0-0 0-0 14. a4 Rad8 15. a5 Nc8 16. Rfd1 Bd6 17. f3 Bb8 18. Qf2 Ne7 19. Na4 Nc8 20. Nc5 Qe7 21. a6 b6 22. Nb7 Rd7 23. Rac1 Rxb7 24. axb7 Qxb7 25. Qh4 f6 26. Bc4 Bf7 27. Qf2 Rd8 28. Rd2 Ne7 29. Rcd1 Qd7 30. g3 a5 31. Kg2 b5 32. Ba2 Ba7 33. Rd3 Qb7 34. Qc2 Rc8 35. Bf2 h6 36. Qe2 Bb8 37. Be1 Bc7 38. Bc3 b4 39. Be1 Bb8 40. Bc4 e5 41. Bxf7+ Kxf7 42. dxe5 Bxe5 43. f4 Bb8 44. Rd7 Qb5 45. Qxb5 cxb5 46. Rb7 g5 47. Rdd7 Re8 48. Kf3 Kf8 49. Rxe7 Rxe7 50. Rxb8+ Kf7 51. Rxb5 Ra7 52. Bf2 Ra8 53. Rb7+ Ke6 54. Bc5 Ra6 55. Re7# 1-0

[Event "Western Province-chT"]
[Site "Cape Town"]
[Date "2018.08.11"]
[Round "3"]
[White "Klaasen, Calvin Jong"]
[Black "Kobese, Watu"]
[Result "0-1"]
[ECO "E97"]
[WhiteElo "2262"]
[BlackElo "2344"]
[PlyCount "96"]
[EventDate "2018.08.04"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "RSA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "MRL"]
[BlackTeam "African Chess Lounge"]
[WhiteTeamCountry "RSA"]
[BlackTeamCountry "RSA"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. 0-0 Nc6 8. d5 Ne7 9. b4 Ne8 10. Nd2 f5 11. c5 Nf6 12. f3 g5 13. Nc4 h6 14. Be3 Ne8 15. Rc1 Ng6 16. a4 Rf7 17. cxd6 cxd6 18. Nb5 b6 19. a5 bxa5 20. Nxa5 a6 21. Nc6 Qf6 22. Nc3 Nc7 23. Na4 Bb7 24. Na5 Nb5 25. Bxb5 axb5 26. Nc3 Nf4 27. g3 fxe4 28. Nxe4 Qg6 29. Nxb7 Rxb7 30. Rc6 Ra2 31. Kh1 Nh5 32. Qb1 Re2 33. Bf2 Bf8 34. Re1 Rxe1+ 35. Qxe1 Rf7 36. Qe2 Nf6 37. Kg2 g4 38. Nxf6+ Rxf6 39. fxg4 Qf7 40. Qd2 Rxf2+ 41. Qxf2 Qxd5+ 42. Qf3 e4 43. Qc3 e3+ 44. Kh3 e2 45. Rc8 Qe6 46. Rxf8+ Kxf8 47. Qf3+ Kg7 48. Qc3+ Kg8 0-1

[Event "Western Province-chT"]
[Site "Cape Town"]
[Date "2018.08.04"]
[Round "2"]
[White "Darling, Paul D"]
[Black "Klaasen, Calvin Jong"]
[Result "0-1"]
[ECO "B08"]
[WhiteElo "1878"]
[BlackElo "2262"]
[PlyCount "90"]
[EventDate "2018.08.04"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "RSA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Cape Town Univ"]
[BlackTeam "MRL"]
[WhiteTeamCountry "RSA"]
[BlackTeamCountry "RSA"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Be2 Bg7 5. Nf3 a6 6. a4 0-0 7. 0-0 Nc6 8. d5 Nb4 9. a5 e6 10. Ra4 c5 11. dxe6 Bxe6 12. Ra3 d5 13. Ng5 d4 14. Nxe6 fxe6 15. Na4 Qxa5 16. c3 d3 17. Bf3 Nc2 18. c4 Nxa3 19. bxa3 Nd7 20. Bg4 Rae8 21. f4 b5 22. Nb2 Qc3 23. Nxd3 Qxc4 24. e5 Nb6 25. Nb2 Qd4+ 26. Qxd4 cxd4 27. Rd1 Kf7 28. Rxd4 Rd8 29. Re4 Rc8 30. Be3 Nc4 31. Nxc4 Rxc4 32. Rxc4 bxc4 33. Be2 Rc8 34. Kf1 Bf8 35. Bc1 Rb8 36. Ke1 Rb1 37. Kd2 Ra1 38. Bxc4 Bxa3 39. Bxa3 Rxa3 40. g4 Ke7 41. Bd3 a5 42. h4 Ra4 43. Ke3 Rb4 44. g5 a4 45. h5 a3 0-1

[Event "Western Province-chT"]
[Site "Cape Town"]
[Date "2018.08.04"]
[Round "1"]
[White "Klaasen, Calvin Jong"]
[Black "September, Veroe"]
[Result "1-0"]
[ECO "A31"]
[WhiteElo "2262"]
[BlackElo "1701"]
[PlyCount "67"]
[EventDate "2018.08.04"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "RSA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "MRL"]
[BlackTeam "Cape Peninsula Univ"]
[WhiteTeamCountry "RSA"]
[BlackTeamCountry "RSA"]

1. d4 Nf6 2. c4 c5 3. Nf3 cxd4 4. Nxd4 b6 5. Nc3 e6 6. e4 d6 7. Be2 a6 8. 0-0 Bb7 9. f3 Nbd7 10. Be3 Qc7 11. Rc1 Rc8 12. Qd2 Be7 13. Rfd1 Qb8 14. a3 0-0 15. b4 Bd8 16. Nb3 Bc7 17. Bf4 Ne5 18. Bxe5 dxe5 19. c5 Rfd8 20. Qb2 Rd4 21. Na4 b5 22. Nc3 Rcd8 23. Bf1 Nh5 24. g3 f5 25. Nxd4 exd4 26. Ne2 fxe4 27. c6 d3 28. fxe4 Bb6+ 29. Kh1 dxe2 30. Rxd8+ Bxd8 31. Bxe2 Nxg3+ 32. hxg3 Qxg3 33. cxb7 Qh4+ 34. Kg2 1-0

[Event "Commonwealth-ch"]
[Site "New Delhi"]
[Date "2018.07.03"]
[Round "9"]
[White "Chudasama, Ankit"]
[Black "Klaasen, Calvin Jong"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "1771"]
[BlackElo "2301"]
[PlyCount "96"]
[EventDate "2018.06.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "IND"]
[SourceTitle "CBM 185 Extra"]
[Source "ChessBase"]
[SourceDate "2018.07.29"]
[SourceVersion "1"]
[SourceVersionDate "2018.07.29"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Bg5 Bg7 5. Qd2 h6 6. Bf4 Nc6 7. Bb5 Bd7 8. d5 Bc8 9. Be2 Nb8 10. Be3 Nc6 11. Bf4 e6 12. Be3 exd5 13. exd5 Ne5 14. Nf3 c6 15. Ng1 Bd7 16. dxc6 Bxc6 17. f4 Ned7 18. Bf3 Nb6 19. Qd3 0-0 20. 0-0-0 Rc8 21. f5 g5 22. Qxd6 Qxd6 23. Rxd6 Nc4 24. Rxc6 bxc6 25. Bxa7 g4 26. Be2 Nxb2 27. Bd4 Rb8 28. h3 Nd5 29. Bxg7 Kxg7 30. Nxd5 cxd5 31. Bxg4 Nc4 32. Bf3 Ne3 33. Ne2 Ra8 34. Nc3 Ra5 35. Ne2 Raa8 36. Nc3 Ra5 37. Re1 d4 38. Nd1 Nxf5 39. Re4 Rd8 40. Rf4 Rf8 41. Re4 Rd8 42. Rf4 Ne7 43. Be2 Ng6 44. Rf3 Ne5 45. Rf5 f6 46. Kb1 Rda8 47. Rf4 Ra4 48. a3 d3 0-1

[Event "Commonwealth-ch"]
[Site "New Delhi"]
[Date "2018.07.02"]
[Round "8"]
[White "Klaasen, Calvin Jong"]
[Black "Gluckman, Paul"]
[Result "1-0"]
[ECO "A35"]
[WhiteElo "2301"]
[BlackElo "1922"]
[PlyCount "79"]
[EventDate "2018.06.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "IND"]
[SourceTitle "CBM 185 Extra"]
[Source "ChessBase"]
[SourceDate "2018.07.29"]
[SourceVersion "1"]
[SourceVersionDate "2018.07.29"]
[SourceQuality "1"]

1. c4 g6 2. Nc3 c5 3. Nf3 Nc6 4. e3 Bg7 5. d4 cxd4 6. exd4 d6 7. Be2 Nh6 8. d5 Nb8 9. h3 Nf5 10. g4 Nh6 11. Be3 Nd7 12. Qd2 Ng8 13. Nd4 a5 14. Rc1 Nc5 15. f4 Nf6 16. Bf3 Nfd7 17. 0-0 Nb6 18. Qe2 0-0 19. b3 Bd7 20. Bg2 Rc8 21. Ncb5 Na8 22. Qd2 Nc7 23. Nc3 Rb8 24. f5 b5 25. cxb5 Nxb5 26. Ncxb5 Bxb5 27. Nc6 Bxc6 28. dxc6 Rb4 29. Rf4 Rxf4 30. Bxf4 gxf5 31. gxf5 Qb6 32. Kh1 Kh8 33. Bd5 Bf6 34. Rg1 Rg8 35. Rxg8+ Kxg8 36. Qg2+ Kh8 37. Bxf7 Bg5 38. Bxg5 Ne4 39. Qxe4 Qf2 40. c7 1-0

[Event "Commonwealth-ch"]
[Site "New Delhi"]
[Date "2018.07.01"]
[Round "7"]
[White "Klaasen, Calvin Jong"]
[Black "Arpita, Mukherjee"]
[Result "1/2-1/2"]
[ECO "E97"]
[WhiteElo "2301"]
[BlackElo "2076"]
[PlyCount "234"]
[EventDate "2018.06.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "IND"]
[SourceTitle "CBM 185 Extra"]
[Source "ChessBase"]
[SourceDate "2018.07.29"]
[SourceVersion "1"]
[SourceVersionDate "2018.07.29"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. 0-0 Nc6 8. d5 Ne7 9. Nd2 a5 10. a3 Nd7 11. Rb1 f5 12. b4 Nf6 13. f3 f4 14. c5 axb4 15. axb4 g5 16. Nc4 h5 17. b5 b6 18. cxd6 cxd6 19. Na4 Rb8 20. Ba3 Ne8 21. Qe1 g4 22. Naxb6 Rxb6 23. Qa5 Nxd5 24. exd5 e4 25. Qxb6 Qxb6+ 26. Nxb6 Bd4+ 27. Kh1 exf3 28. gxf3 Bxb6 29. Rbc1 Bb7 30. Rc6 Bxc6 31. dxc6 Rf5 32. fxg4 hxg4 33. Bxg4 Rxb5 34. Rxf4 Rb1+ 35. Kg2 Kg7 36. Bb4 Rb2+ 37. Kh3 Rb3+ 38. Kg2 Rb2+ 39. Kf1 Rxh2 40. Bd7 Nf6 41. Bxd6 Rh1+ 42. Ke2 Nxd7 43. cxd7 Rh2+ 44. Kd3 Rh1 45. Ke4 Rd1 46. Ke5 Bd8 47. Ke6 Re1+ 48. Be5+ Kg8 49. Rg4+ Kf8 50. Rc4 Re2 51. Ra4 Rg2 52. Ra8 Rg6+ 53. Kf5 Rc6 54. Rc8 Ra6 55. Rxd8+ Ke7 56. Rh8 Kxd7 57. Rh7+ Kc6 58. Rc7+ Kd5 59. Rd7+ Kc4 60. Ke4 Rc6 61. Rd1 Kb3 62. Kd3 Rc8 63. Rb1+ Ka4 64. Kd4 Rc2 65. Kd5 Ka3 66. Bd4 Ka4 67. Ke4 Rc4 68. Kd3 Rb4 69. Rc1 Kb5 70. Rc5+ Ka6 71. Kc3 Rb1 72. Kc4 Rc1+ 73. Bc3 Kb6 74. Rh5 Kc6 75. Rh6+ Kd7 76. Kd4 Rd1+ 77. Kc5 Rc1 78. Rh3 Ke6 79. Re3+ Kf5 80. Kd5 Rd1+ 81. Bd4 Kf4 82. Re8 Kf5 83. Rf8+ Kg5 84. Rf2 Re1 85. Be5 Kg4 86. Rf4+ Kg5 87. Ke6 Re2 88. Rf3 Rg2 89. Rf8 Kg4 90. Rf7 Re2 91. Rf1 Rg2 92. Kf6 Ra2 93. Rf4+ Kh3 94. Kf5 Kg2 95. Rh4 Ra8 96. Rh2+ Kf3 97. Rh3+ Kg2 98. Rg3+ Kf2 99. Rb3 Ra4 100. Bf4 Ke2 101. Kg4 Rc4 102. Re3+ Kd1 103. Kf3 Kc2 104. Be5 Rc8 105. Ke4 Re8 106. Rc3+ Kd2 107. Rb3 Rd8 108. Rb2+ Kc1 109. Ra2 Rd1 110. Bd4 Kb1 111. Rb2+ Kc1 112. Rh2 Kb1 113. Kd5 Rf1 114. Kc4 Kc1 115. Kb3 Kd1 116. Bc3 Rf3 117. Rg2 Re3 1/2-1/2

[Event "Commonwealth-ch"]
[Site "New Delhi"]
[Date "2018.06.29"]
[Round "4"]
[White "Sreeshwan, Maralakshikari"]
[Black "Klaasen, Calvin Jong"]
[Result "1-0"]
[ECO "B08"]
[WhiteElo "2063"]
[BlackElo "2301"]
[PlyCount "75"]
[EventDate "2018.06.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "IND"]
[SourceTitle "CBM 185 Extra"]
[Source "ChessBase"]
[SourceDate "2018.07.29"]
[SourceVersion "1"]
[SourceVersionDate "2018.07.29"]
[SourceQuality "1"]

1. d4 d6 2. Nf3 g6 3. Nc3 Bg7 4. e4 Nf6 5. Be3 c6 6. Qd2 b5 7. Bd3 Nbd7 8. Bh6 0-0 9. 0-0-0 Qc7 10. Rde1 e5 11. h4 b4 12. Nd1 exd4 13. Bxg7 Kxg7 14. h5 Nc5 15. hxg6 Nxd3+ 16. Qxd3 fxg6 17. Nxd4 Bd7 18. f3 Rab8 19. Ne2 Be6 20. Kb1 c5 21. Qd2 Kg8 22. Qh6 Qg7 23. Qh2 Rb6 24. Nf4 Bf7 25. Ne3 a5 26. g4 a4 27. Nf5 gxf5 28. gxf5 Ng4 29. fxg4 a3 30. f6 Bxa2+ 31. Kxa2 b3+ 32. cxb3 Qa7 33. bxa3 c4 34. b4 Ra6 35. Qb2 Rxf6 36. Rhf1 Qf7 37. Qd2 Kh8 38. Qd4 1-0

