[Event "Groningen Harmonie op-B"]
[Site "Groningen"]
[Date "2003.12.29"]
[Round "8"]
[White "Jerphanion, Lucien"]
[Black "Potgieser, Edzard"]
[Result "1/2-1/2"]
[ECO "D01"]
[PlyCount "63"]
[EventDate "2003.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 097 Extra"]
[Source "ChessBase"]
[SourceDate "2004.01.13"]
[SourceVersion "1"]
[SourceVersionDate "2004.01.13"]
[SourceQuality "1"]

1. d4 Nf6 2. Nc3 d5 3. Bg5 Nbd7 4. Nf3 e6 5. e3 c5 6. Bd3 Be7 7. 0-0 0-0 8. Qd2 a6 9. a4 Qc7 10. Rfe1 Re8 11. b3 c4 12. Be2 cxb3 13. cxb3 Ne4 14. Nxe4 dxe4 15. Bf4 Qb6 16. a5 Qb4 17. Qxb4 Bxb4 18. Ng5 Bxe1 19. Rxe1 f5 20. f3 h6 21. Nh3 exf3 22. gxf3 e5 23. Bc4+ Kh8 24. dxe5 Nxe5 25. Bxe5 Rxe5 26. Nf4 Kh7 27. Rd1 g5 28. Nd5 Be6 29. f4 gxf4 30. exf4 Rxd5 31. Bxd5 Rd8 32. Bf3 1/2-1/2

[Event "Groningen Harmonie Mini op-B"]
[Site "Groningen"]
[Date "2002.12.30"]
[Round "5.1"]
[White "Posch, Jan"]
[Black "Potgieser, Edzard"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "1758"]
[BlackElo "1705"]
[PlyCount "26"]
[EventDate "2002.12.26"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nc3 e6 5. f4 Nd7 6. Bd3 Bxd3 7. Qxd3 c5 8. Nf3 Ne7 9. dxc5 Nc6 10. 0-0 Bxc5+ 11. Kh1 Be7 12. Be3 Rc8 13. Ne2 Nb4 1/2-1/2

[Event "Groningen Harmonie Mini op-B"]
[Site "Groningen"]
[Date "2002.12.29"]
[Round "4.1"]
[White "Potgieser, Edzard"]
[Black "Flierman, Edwin"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "1705"]
[BlackElo "1861"]
[PlyCount "96"]
[EventDate "2002.12.26"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Bd3 e5 4. d5 Nbd7 5. Ne2 c6 6. c4 Qc7 7. Nbc3 Be7 8. 0-0 h6 9. Ng3 g5 10. b4 a5 11. b5 c5 12. Nf5 Nf8 13. b6 Qxb6 14. Rb1 Qc7 15. Nb5 Qb8 16. Ng7+ Kd8 17. Be2 Rh7 18. Nh5 Nxh5 19. Bxh5 Rg7 20. Rb3 Bd7 21. Qf3 Ra6 22. h3 Ng6 23. Bd2 Nf4 24. Kh2 a4 25. Rb2 f5 26. exf5 Bxf5 27. g3 e4 28. Qd1 Nd3 29. Rb1 Ne5 30. g4 Nf3+ 31. Kg3 Bh7 32. Bc3 Rg8 33. Rb2 Nh4 34. Re2 Rf8 35. Re3 Bf6 36. Bxf6+ Rxf6 37. Nc3 Kd7 38. Nxe4 Qh8 39. Nxf6+ Qxf6 40. f4 Qb2 41. fxg5 hxg5 42. Rf7+ Kd8 43. Re8+ Kxe8 44. Rxb7+ Kd8 45. Rxb2 Ra7 46. Qe1 Bg6 47. Bxg6 Nxg6 48. Qe6 Ne5 1-0

[Event "Groningen Harmonie Mini op-B"]
[Site "Groningen"]
[Date "2002.12.28"]
[Round "3.1"]
[White "Seijen, Henk G"]
[Black "Potgieser, Edzard"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "1843"]
[BlackElo "1705"]
[PlyCount "62"]
[EventDate "2002.12.26"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nc3 e6 5. g4 Bg6 6. h4 h5 7. Bd3 Bxd3 8. cxd3 hxg4 9. Qxg4 Nh6 10. Bxh6 Rxh6 11. Nf3 Na6 12. 0-0-0 Qd7 13. Ng5 0-0-0 14. Rh3 f5 15. exf6 gxf6 16. Nf3 f5 17. Qg2 Bb4 18. Ne5 Qc7 19. f3 Kb8 20. Kb1 Rc8 21. f4 Ka8 22. Rc1 Qb6 23. Nf3 Rhh8 24. Rg3 c5 25. Na4 Qb5 26. Nxc5 Bxc5 27. dxc5 Qxd3+ 28. Ka1 Nxc5 29. Qf1 Qe3 30. Rc3 Qxf4 31. Qg1 Ne4 0-1

[Event "Groningen Harmonie Mini op-B"]
[Site "Groningen"]
[Date "2002.12.27"]
[Round "2.6"]
[White "Potgieser, Edzard"]
[Black "Dalmolen, Dick"]
[Result "1-0"]
[ECO "C26"]
[WhiteElo "1705"]
[BlackElo "1818"]
[PlyCount "49"]
[EventDate "2002.12.26"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. g3 d5 4. exd5 Nxd5 5. Bg2 Nxc3 6. bxc3 Bd6 7. Ne2 0-0 8. 0-0 c6 9. d3 Bg4 10. h3 Be6 11. c4 Qd7 12. Kh2 f5 13. f4 Qf7 14. Rb1 Qc7 15. fxe5 Bxe5 16. d4 Bd6 17. c5 Be7 18. d5 Rd8 19. d6 Qc8 20. Nd4 Bxa2 21. dxe7 Bxb1 22. exd8Q+ Qxd8 23. Rxf5 Bxc2 24. Qxc2 Qxd4 25. Qb3+ 1-0

[Event "Groningen SO ON Mini op-C"]
[Site "Groningen"]
[Date "2000.??.??"]
[Round "2"]
[White "Potgieser, Edzard"]
[Black "Oldewening, H."]
[Result "1-0"]
[ECO "B75"]
[PlyCount "43"]
[EventDate "2000.12.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 d6 5. Nc3 Nf6 6. Be3 g6 7. Qd2 Bg7 8. f3 a6 9. Be2 Bd7 10. 0-0-0 b5 11. Rdf1 0-0 12. g4 b4 13. Nd1 a5 14. g5 Ne8 15. h4 f6 16. h5 fxg5 17. Bc4+ Kh8 18. hxg6 h6 19. Nxc6 Bxc6 20. Bxg5 Nf6 21. Rxh6+ Bxh6 22. Bxf6+ 1-0

[Event "Groningen ABM op"]
[Site "Groningen"]
[Date "1999.??.??"]
[Round "?"]
[White "Potgieser, Edzard"]
[Black "Ham, Jaap"]
[Result "0-1"]
[ECO "B84"]
[PlyCount "38"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Be3 Be7 7. f3 Nc6 8. Qd2 0-0 9. 0-0-0 a6 10. Be2 Nxd4 11. Bxd4 b5 12. g4 Bb7 13. h4 Rc8 14. h5 b4 15. Nb1 d5 16. e5 Nd7 17. Qd3 Qa5 18. Qb3 Bg5+ 19. Nd2 Bc6 0-1

