[Event "Groene Hart GrB"]
[Site "Netherlands"]
[Date "2001.??.??"]
[Round "2"]
[White "Bode, Nico"]
[Black "Van Os, Wim"]
[Result "1-0"]
[ECO "B33"]
[PlyCount "71"]
[EventDate "2001.05.01"]
[EventType "swiss"]
[EventRounds "7"]
[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 Nf6 5. Nc3 e5 6. Nf5 d5 7. exd5 Bxf5 8. dxc6 Qxd1+ 9. Nxd1 bxc6 10. Ne3 Be4 11. f3 Bg6 12. Bc4 Bc5 13. Bd2 Rd8 14. 0-0-0 0-0 15. Rhe1 Rfe8 16. Ng4 Nxg4 17. fxg4 Rd4 18. Be2 Red8 19. Bc3 Rxd1+ 20. Rxd1 Be3+ 21. Bd2 Rxd2 22. Rxd2 Be4 23. Bf3 Bd5 24. Kd1 Bxd2 25. Kxd2 f6 26. Kd3 Kf7 27. c4 Bxf3 28. gxf3 Ke6 29. b4 g6 30. a4 f5 31. h3 h5 32. b5 Kd6 33. a5 Kc5 34. b6 axb6 35. a6 b5 36. a7 1-0

[Event "Groene Hart GrB"]
[Site "Netherlands"]
[Date "2001.??.??"]
[Round "3"]
[White "Van Os, Wim"]
[Black "Bergshoeff, Bert"]
[Result "1-0"]
[ECO "D53"]
[PlyCount "47"]
[EventDate "2001.05.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 Nbd7 6. Nf3 c5 7. cxd5 Nxd5 8. Nxd5 exd5 9. Bxe7 Qxe7 10. dxc5 Qxc5 11. Rc1 Qa5+ 12. Qd2 Qxd2+ 13. Kxd2 0-0 14. Bb5 Nf6 15. Nd4 Be6 16. Rc7 a6 17. Ba4 b5 18. Bb3 Rac8 19. Rhc1 Rxc7 20. Rxc7 Rc8 21. Nxe6 Ne4+ 22. Ke2 Nd6 23. Rxc8+ Nxc8 24. Nc7 1-0

[Event "Groene Hart GrB"]
[Site "Netherlands"]
[Date "2001.??.??"]
[Round "5"]
[White "Van Os, Wim"]
[Black "Erkelens, Henk"]
[Result "1-0"]
[ECO "D06"]
[PlyCount "70"]
[EventDate "2001.05.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 Nf6 3. cxd5 Nxd5 4. e4 Nf6 5. Nc3 e6 6. Nf3 Bb4 7. Qd3 a6 8. Be2 c5 9. 0-0 cxd4 10. Nxd4 0-0 11. e5 Bxc3 12. bxc3 Nd5 13. Qg3 Ne7 14. Ba3 Re8 15. Rfd1 Qc7 16. Bd6 Qa5 17. Bd3 Ng6 18. Nb3 Qa4 19. Bxg6 hxg6 20. Rd4 Qb5 21. Rh4 Qd7 22. Nc5 Qd8 23. Qh3 f6 24. Qg3 g5 25. exf6 Qxf6 26. Rg4 e5 27. Rxg5 Bf5 28. Nxb7 Nd7 29. Ba3 Rab8 30. Nd6 Bc2 31. Nxe8 Rxe8 32. Rc1 Ba4 33. Qg4 Bc6 34. Rg6 Qf4 35. Qxf4 exf4 1-0

[Event "Groene Hart GrB"]
[Site "Netherlands"]
[Date "2001.??.??"]
[Round "1"]
[White "Van Os, Wim"]
[Black "Leenman, Dennis"]
[Result "0-1"]
[ECO "A05"]
[PlyCount "97"]
[EventDate "2001.05.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. g3 Nf6 2. Bg2 g6 3. d3 Bg7 4. Nf3 d6 5. 0-0 0-0 6. c3 e5 7. Nbd2 Nc6 8. Rb1 Bf5 9. e4 Be6 10. Qa4 Nd7 11. b4 a5 12. b5 Nc5 13. Qc2 Ne7 14. d4 Nd7 15. d5 Bg4 16. h3 Bxf3 17. Nxf3 f5 18. Ng5 Nc5 19. Be3 h6 20. Bxc5 hxg5 21. Be3 f4 22. Bd2 f3 23. Bh1 g4 24. Qd3 Qd7 25. Rb3 Rf7 26. c4 a4 27. Ra3 Raf8 28. Rc1 gxh3 29. c5 Bh8 30. cxd6 h2+ 31. Kf1 Qh3+ 32. Ke1 Qg2 33. Qf1 Qxf1+ 34. Kxf1 cxd6 35. Rc7 Nc8 36. Rxf7 Rxf7 37. Rxf3 Bf6 38. Kg2 Bd8 39. Rxf7 Kxf7 40. Kxh2 Na7 41. Bf3 Bb6 42. Kg2 Bc5 43. Be2 Kf6 44. Kf3 Nc8 45. Ba5 Nb6 46. Bd3 a3 47. Ke2 Na4 48. f4 b6 49. Bd2 0-1

[Event "Groene Hart GrB"]
[Site "Netherlands"]
[Date "2001.??.??"]
[Round "4"]
[White "Van der Hoeven, Peter"]
[Black "Van Os, Wim"]
[Result "1-0"]
[ECO "E73"]
[PlyCount "61"]
[EventDate "2001.05.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. Bg5 Nbd7 8. Qd2 c6 9. 0-0-0 Qa5 10. Kb1 a6 11. dxe5 dxe5 12. Qc2 b5 13. Nd2 Nc5 14. Nb3 Nxb3 15. axb3 Be6 16. Rd6 bxc4 17. Bxc4 Qc5 18. Rhd1 Bxc4 19. bxc4 Ng4 20. f3 f6 21. Na4 Qa7 22. Rd7 Qb8 23. Bc1 Nh6 24. Nc5 Nf7 25. Rb7 Qc8 26. Rdd7 Rb8 27. Rbc7 Qe8 28. Re7 Qd8 29. Ne6 Qd6 30. c5 Qxc7 31. Rxc7 1-0

[Event "Groene Hart GrB"]
[Site "Netherlands"]
[Date "2001.??.??"]
[Round "6"]
[White "Veldhuizen, Niels"]
[Black "Van Os, Wim"]
[Result "0-1"]
[ECO "B23"]
[PlyCount "68"]
[EventDate "2001.05.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Bc4 e6 4. f4 Nge7 5. d3 d5 6. Bb3 b5 7. a4 b4 8. exd5 exd5 9. Nce2 h5 10. Nf3 Nf5 11. 0-0 h4 12. Qe1 Be7 13. g4 hxg3 14. Nxg3 Qd6 15. Ne5 Ncd4 16. Rf2 Nxg3 17. hxg3 Qh6 18. Bxd5 Rb8 19. Bxf7+ Kd8 20. Bd5 Be6 21. Nc6+ Nxc6 22. Qxe6 Qxe6 23. Bxe6 Nd4 24. Bg4 Rb6 25. f5 Bf6 26. Be3 Re8 27. Re1 Rb7 28. Bd2 Rbe7 29. Rxe7 Rxe7 30. Bf4 Nc6 31. Kg2 Bxb2 32. Bg5 Bf6 33. Bxf6 gxf6 34. c4 Ne5 0-1

[Event "Oberliga Wuerttemberg 9394"]
[Site "Wuerttemberg"]
[Date "1994.??.??"]
[Round "?"]
[White "Van Os, Wim"]
[Black "Lach, Bernhard"]
[Result "0-1"]
[ECO "D09"]
[PlyCount "66"]
[EventDate "1993.10.??"]
[EventType "team"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "GER"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. g3 Be6 6. Qa4 Qd7 7. Bg2 Nge7 8. 0-0 Ng6 9. Rd1 Rd8 10. Bg5 Be7 11. Bxe7 Ngxe7 12. Na3 0-0 13. Rac1 a6 14. Nc2 Ng6 15. b3 Bh3 16. b4 Bxg2 17. Kxg2 Qg4 18. Ng1 Nf4+ 19. Kf1 Nxe2 20. Nxe2 d3 21. Rxd3 Rxd3 22. Ne1 Rd2 23. Nf4 Nxe5 24. h3 Qf5 25. Rc2 Rd1 26. Re2 Rfd8 27. Qb3 h6 28. Qe3 Nxc4 29. Qe7 g5 30. Nh5 Qxh3+ 31. Kg1 Qxh5 32. Kg2 Qg6 33. Nf3 Qc6 0-1

[Event "Oberliga Wuerttemberg 9394"]
[Site "Wuerttemberg"]
[Date "1994.??.??"]
[Round "?"]
[White "Van Os, Wim"]
[Black "Schulze, Andreas"]
[Result "0-1"]
[ECO "D85"]
[PlyCount "77"]
[EventDate "1993.10.??"]
[EventType "team"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "GER"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3 c5 8. Rb1 0-0 9. Be2 cxd4 10. cxd4 Qa5+ 11. Qd2 Qxd2+ 12. Bxd2 Rd8 13. d5 Nd7 14. Bb4 Bf8 15. Nd2 Nf6 16. Bc4 Ng4 17. Nf1 Ne5 18. Be2 f5 19. f4 Nf7 20. e5 Rxd5 21. Ne3 Rd4 22. Bc5 Rxf4 23. Nd5 Re4 24. Nc7 b6 25. Nxa8 bxc5 26. Kf2 Nxe5 27. Nc7 e6 28. Rb8 Bd7 29. Rb7 c4 30. Rd1 Bc5+ 31. Kf1 c3 32. Nb5 Rf4+ 33. Bf3 c2 34. Rc1 Rc4 35. Nxa7 Be3 36. Nb5 Bxc1 37. Nd6 Rf4 38. Nb5 Be3 39. Nd4 0-1

[Event "Stuttgart-ch"]
[Site "Stuttgart"]
[Date "1993.??.??"]
[Round "6"]
[White "Boehmler, Thomas"]
[Black "Van Os, Wim"]
[Result "1/2-1/2"]
[ECO "E88"]
[PlyCount "51"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. d4 Bg7 4. e4 d6 5. f3 0-0 6. Be3 e5 7. d5 c6 8. Qd2 cxd5 9. cxd5 Nh5 10. g4 Nf4 11. Nge2 f5 12. gxf5 gxf5 13. 0-0-0 Na6 14. Nxf4 exf4 15. Bxf4 Qh4 16. Be3 fxe4 17. fxe4 Rf3 18. Rg1 Kf7 19. Qg2 Qf6 20. Bxa6 Bh3 21. Qxf3 Qxf3 22. Rdf1 Bxf1 23. Rxf1 Qxf1+ 24. Bxf1 Be5 25. h4 Rg8 26. Be2 1/2-1/2

[Event "Stuttgart-ch"]
[Site "Stuttgart"]
[Date "1993.??.??"]
[Round "2"]
[White "Jenewein, Werner"]
[Black "Van Os, Wim"]
[Result "1-0"]
[ECO "E74"]
[PlyCount "80"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 0-0 6. Bg5 c5 7. d5 b5 8. cxb5 Qa5 9. Bd2 a6 10. a4 axb5 11. Nxb5 Qb6 12. Qb1 Bd7 13. Nf3 Na6 14. 0-0 Rfc8 15. Rd1 c4 16. Nfd4 Nc5 17. Be3 Qb7 18. Nc6 Bxc6 19. dxc6 Qxc6 20. Bf3 Nfxe4 21. Bxc5 Qxc5 22. Bxe4 Rab8 23. Qc2 e6 24. Rac1 d5 25. Bf3 Qb4 26. Rb1 Ra8 27. Nc3 Ra5 28. Ne2 Rb8 29. Nd4 Qxa4 30. Qxa4 Rxa4 31. b3 cxb3 32. Nxb3 Rab4 33. Nd2 Bc3 34. Rxb4 Rxb4 35. Nb1 Bg7 36. g3 Rb2 37. Kg2 Kf8 38. Rc1 Ke7 39. Nc3 Bd4 40. Ne2 Kf6 1-0

[Event "Stuttgart-ch"]
[Site "Stuttgart"]
[Date "1993.??.??"]
[Round "1"]
[White "Szenetra, Werner"]
[Black "Van Os, Wim"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "2260"]
[PlyCount "53"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 c6 4. Bc4 d5 5. exd5 b5 6. Bb3 b4 7. Nce2 cxd5 8. Bf4 Nc6 9. Nf3 e6 10. a3 Qb6 11. 0-0 Nge7 12. axb4 Qxb4 13. Ra4 Qb6 14. Qd2 Ba6 15. Re1 Bb5 16. Ra3 Bxe2 17. Qxe2 Nxd4 18. Nxd4 Bxd4 19. Ba4+ Kf8 20. Bh6+ Kg8 21. c3 Nf5 22. Bf4 Bg7 23. Rb3 Qd8 24. Qa6 Bf6 25. Rb7 Kg7 26. Rxe6 Bg5 27. Be5+ 1-0

[Event "Stuttgart-ch"]
[Site "Stuttgart"]
[Date "1993.??.??"]
[Round "4"]
[White "Van Os, Wim"]
[Black "Ochs, Thomas"]
[Result "1-0"]
[ECO "D15"]
[PlyCount "59"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 c6 2. c4 d5 3. Nc3 Nf6 4. Nf3 Bf5 5. Qb3 Qc7 6. cxd5 cxd5 7. Bf4 Qb6 8. Qxb6 axb6 9. Nb5 Na6 10. Rc1 Rc8 11. Rxc8+ Bxc8 12. a3 Nh5 13. Bc7 Bd7 14. e3 e6 15. Bxb6 Be7 16. Bd3 0-0 17. Ne5 Rc8 18. Kd2 Nf6 19. f3 Bxb5 20. Bxb5 Bd8 21. Bxd8 Rxd8 22. Rc1 Ne8 23. Bxa6 bxa6 24. Rc6 Rd6 25. Rxd6 Nxd6 26. b3 Nb5 27. a4 Nc7 28. Kc3 Kf8 29. Kb4 Ke7 30. Ka5 1-0

[Event "Stuttgart-ch"]
[Site "Stuttgart"]
[Date "1993.??.??"]
[Round "3"]
[White "Van Os, Wim"]
[Black "Pottgiesser, Ulrich"]
[Result "1-0"]
[ECO "D36"]
[PlyCount "65"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 Be7 6. e3 h6 7. Bh4 c6 8. Bd3 Ne4 9. Bxe7 Qxe7 10. Qc2 f5 11. Nxd5 Qd6 12. Bxe4 fxe4 13. Qxe4+ Kd8 14. Nc3 Re8 15. Qc2 Bg4 16. Nge2 Nd7 17. 0-0 Qf6 18. b4 b5 19. Rac1 a6 20. a4 Qd6 21. d5 cxd5 22. axb5 Rc8 23. Qa2 Bxe2 24. Nxe2 Rxc1 25. Rxc1 axb5 26. Nd4 Nb6 27. Nc6+ Kd7 28. Qa7+ Ke6 29. Qxb6 Kf7 30. Qxb5 Qf6 31. Qxd5+ Kg6 32. Nd4 Re5 33. Qc6 1-0

[Event "Stuttgart-ch"]
[Site "Stuttgart"]
[Date "1993.??.??"]
[Round "5"]
[White "Zikeli, Hansgeorg"]
[Black "Van Os, Wim"]
[Result "1-0"]
[ECO "E70"]
[PlyCount "65"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. c4 d6 4. Nc3 Nf6 5. Nge2 0-0 6. Ng3 c5 7. d5 Na6 8. h4 h5 9. Bf4 Nc7 10. Qd2 Rb8 11. a3 b5 12. cxb5 a6 13. bxa6 Bxa6 14. Bxa6 Nxa6 15. 0-0 Ng4 16. Nge2 Ne5 17. Rab1 Rb7 18. Qc2 c4 19. Nd4 Nd3 20. Nc6 Qc7 21. Be3 Ne5 22. Nxe5 Bxe5 23. Ne2 Rfb8 24. Bd4 Bxd4 25. Nxd4 Rb6 26. Nc6 R8b7 27. Na5 Rb8 28. Nxc4 Rb3 29. Rfc1 Nc5 30. Nd2 R3b7 31. b4 Na6 32. Qd3 Qb6 33. Rc6 1-0

