[Event "Garmisch Partenkirchen op"]
[Site "Garmisch Partenkirchen"]
[Date "1991.??.??"]
[Round "4"]
[White "Koster, Hans"]
[Black "Goy, Udo"]
[Result "0-1"]
[ECO "A52"]
[BlackElo "2225"]
[PlyCount "42"]
[EventDate "1991.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Bf4 Bb4+ 5. Nc3 Nc6 6. Nf3 Qe7 7. e3 Bxc3+ 8. bxc3 Ngxe5 9. Nxe5 Nxe5 10. Qd4 f6 11. c5 b6 12. cxb6 axb6 13. a4 Bb7 14. f3 Bxf3 15. Kf2 c5 16. Qd2 Bc6 17. Qd1 0-0 18. Bd3 Rxa4 19. Rxa4 Bxa4 20. Bc4+ Nxc4 21. Qxa4 d5 0-1

[Event "Hagen Hohenlimburg op"]
[Site "Hohenlimburg"]
[Date "1978.??.??"]
[Round "2"]
[White "Hopfgarten, Ernst"]
[Black "Koster, Hans"]
[Result "1-0"]
[ECO "B97"]
[PlyCount "83"]
[EventDate "1978.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Qb6 8. Nb3 Be7 9. Qf3 Nbd7 10. Bd3 Rb8 11. 0-0-0 Qc7 12. Rhe1 b5 13. Re3 Bb7 14. Qe2 e5 15. Rg3 h6 16. Bxf6 Bxf6 17. Nd5 Bxd5 18. exd5 Kd8 19. fxe5 Bxe5 20. Rf3 Re8 21. Qf2 f6 22. Nd4 Bxd4 23. Qxd4 Ne5 24. Re3 Kc8 25. Bg6 Re7 26. Rc3 Nc4 27. b3 Qa5 28. bxc4 Qxa2 29. cxb5+ Kd8 30. Re3 Rbb7 31. Rxe7 Qa3+ 32. Kd2 Qa5+ 33. Qc3 Qxc3+ 34. Kxc3 Rxe7 35. bxa6 Kc8 36. Rb1 Re3+ 37. Kd2 Ra3 38. Bd3 Ra5 39. Bf5+ Kd8 40. Rb8+ Kc7 41. Rb7+ Kd8 42. a7 1-0

[Event "Hagen Hohenlimburg op"]
[Site "Hohenlimburg"]
[Date "1978.??.??"]
[Round "1"]
[White "Koster, Hans"]
[Black "Boersch, D."]
[Result "1-0"]
[ECO "A22"]
[PlyCount "57"]
[EventDate "1978.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. d3 Bb4 4. Bg5 Nc6 5. a3 Bxc3+ 6. bxc3 0-0 7. Nf3 d6 8. e4 Qe7 9. h3 Nd8 10. Be2 Ne6 11. Qd2 h6 12. Be3 c6 13. g3 Nc7 14. g4 d5 15. g5 hxg5 16. Bxg5 dxe4 17. dxe4 Rd8 18. Qe3 Nce8 19. Kf1 b6 20. Kg2 Qe6 21. c5 bxc5 22. Nh4 Nd6 23. Rad1 Bb7 24. f3 c4 25. a4 Rd7 26. Qc5 Nfxe4 27. fxe4 Nxe4 28. Qe3 f6 29. Bg4 1-0

[Event "Hagen Hohenlimburg op"]
[Site "Hohenlimburg"]
[Date "1978.??.??"]
[Round "3"]
[White "Koster, Hans"]
[Black "Ehlting, Hans"]
[Result "0-1"]
[ECO "E07"]
[PlyCount "106"]
[EventDate "1978.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. c4 Nf6 2. Nf3 e6 3. g3 d5 4. cxd5 exd5 5. Bg2 Be7 6. 0-0 Nbd7 7. d4 c6 8. Nc3 0-0 9. h3 Re8 10. Be3 Nf8 11. Ne5 Ng6 12. f4 Bb4 13. Kh2 Bxc3 14. bxc3 Bf5 15. Bd2 Be4 16. Rf2 Bxg2 17. Rxg2 Ne4 18. e3 f6 19. Nd3 Qd7 20. Qh5 Nxd2 21. Rxd2 Rxe3 22. Nc5 Qe7 23. Nd3 Rxg3 24. Re2 Re3 25. Rae1 Rxe2+ 26. Rxe2 Qc7 27. Kg2 Rf8 28. Kf3 Qf7 29. Qg4 f5 30. Qg3 Ne7 31. Qg5 Nc8 32. Ne5 Qc7 33. Nd3 Qa5 34. Nb4 Qa3 35. Rc2 a5 36. Nd3 Nd6 37. Qe7 Nb5 38. Qe6+ Kh8 39. Kg2 Qd6 40. Qe3 Qg6+ 41. Kh2 Nd6 42. Rg2 Qf6 43. Ne5 Re8 44. Qc1 Ne4 45. Qe1 Kg8 46. Qe3 Qh6 47. Rb2 b5 48. Rg2 b4 49. cxb4 axb4 50. Rc2 c5 51. Nf3 c4 52. Ne5 Ra8 53. Nf3 Ra3 0-1

[Event "Hagen Hohenlimburg op"]
[Site "Hohenlimburg"]
[Date "1978.??.??"]
[Round "5"]
[White "Koster, Hans"]
[Black "Krueger, A."]
[Result "0-1"]
[ECO "D50"]
[PlyCount "100"]
[EventDate "1978.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. c4 Nf6 2. Nf3 e6 3. Nc3 d5 4. d4 c5 5. Bg5 cxd4 6. Qxd4 Be7 7. e3 Nc6 8. Qd2 dxc4 9. Bxc4 0-0 10. Qc2 a6 11. 0-0 b5 12. Bd3 Nb4 13. Bxh7+ Nxh7 14. Qe4 Bd7 15. Bf4 Bc6 16. Qb1 Bxf3 17. gxf3 Qd3 18. Qc1 Qc2 19. Qxc2 Nxc2 20. Rac1 Nb4 21. Bg3 Rfd8 22. a3 Nd3 23. Rc2 Rac8 24. Re2 Nxb2 25. Nxb5 axb5 26. Rxb2 Bxa3 27. Rxb5 Rc1 28. Rxc1 Bxc1 29. Rb8 Rxb8 30. Bxb8 Ng5 31. Kg2 f6 32. Bd6 Bb2 33. f4 Ne4 34. Bc7 f5 35. f3 Nd2 36. Bb6 Nc4 37. Ba7 Bc1 38. Kf2 Kh7 39. Ke2 Kh6 40. Bc5 Ba3 41. Ba7 Kh5 42. Bd4 g6 43. Kd3 Nd6 44. Bf6 Nf7 45. h4 Bc5 46. Ke2 Bb6 47. Kd3 Bd8 48. Bg5 Nxg5 49. hxg5 Bb6 50. e4 Kh4 0-1

[Event "Hagen Hohenlimburg op"]
[Site "Hohenlimburg"]
[Date "1978.??.??"]
[Round "9"]
[White "Koster, Hans"]
[Black "Neukoetter, Gerhard"]
[Result "1/2-1/2"]
[ECO "A38"]
[PlyCount "114"]
[EventDate "1978.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 Nc6 3. Nf3 g6 4. g3 Bg7 5. Bg2 Nf6 6. 0-0 b6 7. d4 Bb7 8. d5 Nb4 9. Bg5 d6 10. Qd2 h6 11. Bf4 g5 12. Be3 Ng4 13. Nd1 e6 14. a3 Na6 15. dxe6 fxe6 16. Nc3 Qe7 17. Rad1 0-0-0 18. Nb5 Nxe3 19. Qxe3 g4 20. Nh4 Bxg2 21. Nxg2 Bxb2 22. Nf4 Rhe8 23. Rd3 Bd4 24. Nxd4 cxd4 25. Rxd4 Nc7 26. Nd3 h5 27. Nb4 Kb7 28. Rfd1 a5 29. Qe4+ d5 30. cxd5 exd5 31. Qxe7 Rxe7 32. Nxd5 Rxe2 33. Nf4 Rxd4 34. Rxd4 Re5 35. Kg2 Nb5 36. Rd3 Kc6 37. h3 Kc5 38. a4 Nd4 39. hxg4 hxg4 40. Rd2 Kc4 41. Rb2 Nf3 42. Rb1 Re1 43. Rxe1 Nxe1+ 44. Kf1 Nf3 45. Ke2 Kb4 46. Nd5+ Kxa4 47. Nxb6+ Kb5 48. Nd5 Kc5 49. Ne3 a4 50. Kd1 Ne5 51. Kc2 Kb5 52. Kc3 Kc5 53. Kc2 Kd4 54. Kb1 Kc3 55. Ka2 Kd3 56. Nxg4 Nxg4 57. f3 Ne5 1/2-1/2

[Event "Hagen Hohenlimburg op"]
[Site "Hohenlimburg"]
[Date "1978.??.??"]
[Round "7"]
[White "Koster, Hans"]
[Black "Scheffner, Axel"]
[Result "0-1"]
[ECO "A28"]
[PlyCount "94"]
[EventDate "1978.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e4 Bc5 5. Be2 d6 6. d3 h6 7. h3 Be6 8. 0-0 0-0 9. Kh2 Qd7 10. Bd2 a6 11. a3 Rab8 12. b4 Ba7 13. b5 Nd4 14. Rb1 axb5 15. Nxb5 Nxf3+ 16. Bxf3 Bc5 17. Rb3 c6 18. Nc3 b5 19. Qb1 Ra8 20. Bc1 bxc4 21. Rb7 Qd8 22. Be3 Bxa3 23. Rd1 cxd3 24. Qxd3 Qc8 25. Rdb1 Rd8 26. Ba7 Bc5 27. Bxc5 dxc5 28. Qe3 Nd7 29. Bd1 c4 30. Na4 Rb8 31. Rxb8 Nxb8 32. Nc5 Na6 33. Be2 Nxc5 34. Qxc5 Qc7 35. f3 Qd6 36. Qa7 Qd4 37. Qa5 Qd2 38. Qb6 Rc8 39. Rb2 Qd4 40. Qb7 Kh7 41. Rc2 c3 42. Qb1 Ra8 43. Qc1 Ra2 44. Bf1 Rxc2 45. Qxc2 Qd2 46. Bd3 Bc4 47. Qxd2 cxd2 0-1

[Event "Hagen Hohenlimburg op"]
[Site "Hohenlimburg"]
[Date "1978.??.??"]
[Round "4"]
[White "Muenster, Klaus"]
[Black "Koster, Hans"]
[Result "0-1"]
[ECO "D53"]
[PlyCount "64"]
[EventDate "1978.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Bg5 Be7 5. e3 0-0 6. Nc3 h6 7. Bh4 c6 8. Bd3 dxc4 9. Bxc4 b5 10. Bd3 b4 11. Bxf6 Bxf6 12. Ne4 Be7 13. 0-0 Nd7 14. Rc1 Qb6 15. Bb1 f5 16. Ng3 Bb7 17. Qb3 c5 18. Nxf5 Rxf5 19. Bxf5 Bd5 20. dxc5 Nxc5 21. Bxe6+ Qxe6 22. Qc2 Bxf3 23. gxf3 Qxa2 24. Qf5 Rf8 25. Qe5 Qf7 26. Rxc5 Bxc5 27. Qxc5 Qxf3 28. Qxb4 Rf6 29. Qb8+ Kh7 30. Ra1 Rg6+ 31. Qg3 Rxg3+ 32. hxg3 Qb7 0-1

[Event "Hagen Hohenlimburg op"]
[Site "Hohenlimburg"]
[Date "1978.??.??"]
[Round "6"]
[White "Schneck, Ralf"]
[Black "Koster, Hans"]
[Result "0-1"]
[ECO "E20"]
[PlyCount "64"]
[EventDate "1978.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e6 3. d4 Bb4 4. Bd2 c5 5. dxc5 Bxc5 6. e3 Nc6 7. Nf3 Bb6 8. Be2 a6 9. 0-0 d6 10. a3 a5 11. Qc2 0-0 12. Rfd1 Qe7 13. Nb5 d5 14. Bd3 h6 15. Rac1 dxc4 16. Bxc4 Bd7 17. Bc3 e5 18. Rd6 Bc5 19. Rd2 Bg4 20. Nh4 Kh8 21. h3 Be6 22. Bxe6 Qxe6 23. Nc7 Qe7 24. Nxa8 Rxa8 25. Nf3 b6 26. Rcd1 Ng8 27. Rd7 Qe6 28. R7d2 Rc8 29. Qd3 e4 30. Qd7 Qxd7 31. Rxd7 exf3 32. Rxf7 Bf8 0-1

[Event "Hagen Hohenlimburg op"]
[Site "Hohenlimburg"]
[Date "1978.??.??"]
[Round "8"]
[White "Zentarra, J."]
[Black "Koster, Hans"]
[Result "1/2-1/2"]
[ECO "B50"]
[PlyCount "60"]
[EventDate "1978.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bc4 Nf6 4. Nc3 e6 5. 0-0 Be7 6. d3 h6 7. e5 dxe5 8. Nxe5 0-0 9. Ng4 Qd4 10. Nxf6+ Bxf6 11. Be3 Qh4 12. Bxc5 Rd8 13. g3 Qh3 14. Qf3 Bd7 15. Qg2 Qf5 16. Ba3 Bc6 17. Ne4 Bd4 18. g4 Qg6 19. h4 f5 20. h5 Qf7 21. gxf5 Qxf5 22. Qg6 Bd5 23. Nd6 Qh3 24. Bxd5 exd5 25. Nf7 Rc8 26. Nxh6+ Kh8 27. Nf7+ Kg8 28. Ng5 Qg3+ 29. Kh1 Qh4+ 30. Kg1 Qg3+ 1/2-1/2

