[Event "Bremen Silvester op-B"]
[Site "Bremen"]
[Date "2022.12.30"]
[Round "7"]
[White "Hattenhauer, Klaus"]
[Black "Ploeger, Marc Andre"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "1799"]
[PlyCount "32"]
[EventDate "2022.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 211 Extra"]
[Source "ChessBase"]
[SourceDate "2023.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.01.31"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Nf6 3. e3 c5 4. c3 Nc6 5. Nf3 Qb6 6. Qb3 Bf5 7. dxc5 Qxc5 8. Qxb7 Rc8 9. Bb5 Qb6 10. Qxb6 axb6 11. Ne5 Bd7 12. Nxd7 Nxd7 13. 0-0 e5 14. Bg3 h5 15. h3 Be7 16. Rd1 Ncb8 1-0

[Event "Bremen Silvester op-B"]
[Site "Bremen"]
[Date "2022.12.29"]
[Round "6"]
[White "Hattenhauer, Klaus"]
[Black "Eitel, Luc"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "1799"]
[BlackElo "1208"]
[PlyCount "149"]
[EventDate "2022.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 211 Extra"]
[Source "ChessBase"]
[SourceDate "2023.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.01.31"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 Bf5 4. e3 e6 5. Nbd2 a6 6. h3 c5 7. c3 Nbd7 8. Be2 Rc8 9. 0-0 Be7 10. Re1 0-0 11. Bf1 h6 12. Ne5 Nxe5 13. dxe5 Nd7 14. Nf3 f6 15. exf6 Bxf6 16. Bd3 Bxd3 17. Qxd3 Nb6 18. Qe2 Qe7 19. Ne5 Bxe5 20. Bxe5 Nc4 21. Bg3 Qf6 22. e4 Nb6 23. exd5 exd5 24. Qh5 d4 25. cxd4 cxd4 26. Rad1 Rfd8 27. Be5 Qc6 28. Bxd4 Rd5 29. Qf3 Rf8 30. Qg4 Rg5 31. Qe4 Qxe4 32. Rxe4 Rb5 33. Re7 Rf7 34. Rde1 Nd5 35. Rxf7 Kxf7 36. Re5 Nc7 37. Rxb5 Nxb5 38. Be3 Ke6 39. Kf1 Kd5 40. Ke2 Ke5 41. Kd3 Kd5 42. Bd2 Nd6 43. Bc3 g6 44. Bb4 Ne4 45. Ke3 Ke5 46. Bc3+ Nxc3 47. bxc3 b5 48. g4 g5 49. Kd3 Kd5 50. f3 a5 51. a3 a4 52. Ke3 Kc4 53. Kd2 Kb3 54. Kd3 Kxa3 55. f4 gxf4 56. h4 Kb2 57. g5 hxg5 58. hxg5 a3 59. g6 a2 60. g7 a1Q 61. g8Q Qd1+ 62. Ke4 Qc2+ 63. Kxf4 Qxc3 64. Qg2+ Kb3 65. Qg1 b4 66. Qb1+ Ka3 67. Ke4 b3 68. Qf1 Qc2+ 69. Kd4 b2 70. Qf8+ Ka2 71. Qa8+ Kb1 72. Qh1+ Qc1 73. Qe4+ Qc2 74. Qh1+ Ka2 75. Qa8+ 1/2-1/2

[Event "Bremen Silvester op-B"]
[Site "Bremen"]
[Date "2022.12.29"]
[Round "5"]
[White "Malinowsky, Celina"]
[Black "Hattenhauer, Klaus"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "1487"]
[BlackElo "1799"]
[PlyCount "97"]
[EventDate "2022.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 211 Extra"]
[Source "ChessBase"]
[SourceDate "2023.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.01.31"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd8 4. Nf3 Nf6 5. Bc4 e6 6. d3 a6 7. Bf4 Bd6 8. Bxd6 cxd6 9. Qe2 0-0 10. 0-0 b5 11. Bb3 Bb7 12. Rad1 Nc6 13. Ne4 Rc8 14. c3 Qe7 15. Rfe1 h6 16. Nxf6+ Qxf6 17. d4 Na5 18. Bc2 Bxf3 19. Qxf3 Qxf3 20. gxf3 Nc4 21. b3 Na3 22. Rc1 Nxc2 23. Rxc2 d5 24. Rec1 Rfd8 25. Kf1 Rc6 26. Ke2 Rdc8 27. Kd3 f6 28. c4 dxc4+ 29. bxc4 b4 30. c5 Rd8 31. Kc4 Rd5 32. Rd1 Rh5 33. Kxb4 Rxh2 34. d5 Rh4+ 35. Ka5 exd5 36. Rxd5 Kf8 37. Rd6 Rxd6 38. cxd6 Rd4 39. Rc8+ Kf7 40. Rc7+ Kg6 41. d7 h5 42. Kxa6 h4 43. Kb7 h3 44. Kc8 h2 45. Rc1 Rc4+ 46. Rxc4 h1Q 47. d8Q Qxf3 48. Qe8+ Kg5 49. Qe3+ 1-0

[Event "Bremen Silvester op-B"]
[Site "Bremen"]
[Date "2022.12.28"]
[Round "4"]
[White "Hattenhauer, Klaus"]
[Black "Habel, Jakob"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1799"]
[PlyCount "66"]
[EventDate "2022.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 211 Extra"]
[Source "ChessBase"]
[SourceDate "2023.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 d5 3. e3 e6 4. Nf3 c5 5. c3 Nc6 6. Nbd2 cxd4 7. exd4 Nh5 8. Be3 Bd6 9. g3 0-0 10. Ne5 g6 11. Ndf3 Ng7 12. Nd3 Nf5 13. Bd2 Qc7 14. Bg2 b6 15. a3 Ba6 16. Nb4 Nxb4 17. cxb4 e5 18. Bc3 exd4 19. Nxd4 Rfe8+ 20. Kd2 Nxd4 21. Re1 Nf5 22. Bxd5 Rad8 23. Qb3 Bf8 24. Rxe8 Rxe8 25. b5 Bb7 26. Bxb7 Qxb7 27. Rd1 Qf3 28. Kc1 Qxf2 29. g4 Nh4 30. Kb1 Nf3 31. Rd7 Ne5 32. Rxa7 Nd3 33. Bd4 Re1+ 0-1

[Event "Bremen Silvester op-B"]
[Site "Bremen"]
[Date "2022.12.28"]
[Round "3"]
[White "Michelitsch, Mario"]
[Black "Hattenhauer, Klaus"]
[Result "1-0"]
[ECO "A24"]
[WhiteElo "1562"]
[BlackElo "1799"]
[PlyCount "85"]
[EventDate "2022.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 211 Extra"]
[Source "ChessBase"]
[SourceDate "2023.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.01.31"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 0-0 5. e4 d6 6. Nge2 e5 7. d3 c6 8. 0-0 a5 9. h3 Nbd7 10. Be3 Re8 11. Qd2 Nf8 12. f4 Qc7 13. Kh2 Bd7 14. g4 h5 15. g5 N6h7 16. f5 gxf5 17. exf5 d5 18. cxd5 e4+ 19. Bf4 Be5 20. dxe4 Qd6 21. h4 Kh8 22. Bxe5+ Qxe5+ 23. Qf4 cxd5 24. Qxe5+ Rxe5 25. Nxd5 Bb5 26. Ndc3 Ba6 27. Rfd1 Rae8 28. Ng3 Rc5 29. Rac1 Rec8 30. Nce2 Rc2 31. Bf1 Rxc1 32. Rxc1 Rxc1 33. Nxc1 Bxf1 34. Nxf1 Nd7 35. Nd3 Nhf8 36. Kg3 b5 37. Kf4 Kg7 38. Ng3 Nb6 39. Nxh5+ Kh8 40. Ne5 Kg8 41. Nf6+ Kg7 42. h5 Nh7 43. h6+ 1-0

[Event "Bremen Silvester op-B"]
[Site "Bremen"]
[Date "2022.12.27"]
[Round "2"]
[White "Hattenhauer, Klaus"]
[Black "Ebeling, Hans Juergen"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "1799"]
[BlackElo "1541"]
[PlyCount "86"]
[EventDate "2022.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 211 Extra"]
[Source "ChessBase"]
[SourceDate "2023.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.01.31"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Nf6 3. e3 c5 4. c3 Nc6 5. h3 h6 6. Nf3 Bf5 7. Bd3 Bxd3 8. Qxd3 e6 9. Nbd2 Bd6 10. Ne5 Qc7 11. Ndf3 cxd4 12. exd4 Nd7 13. Qe3 Ncxe5 14. dxe5 Bc5 15. Qd2 Nb6 16. 0-0 Nc4 17. Qc1 g5 18. Bh2 0-0-0 19. b4 Be7 20. Nd4 Qb6 21. Rb1 Kd7 22. a4 a6 23. a5 Qa7 24. Qc2 b6 25. axb6 Nxb6 26. Ra1 Qb7 27. Rfd1 Ra8 28. Nb3 Nc4 29. Na5 Nxa5 30. Rxa5 Rac8 31. Qa4+ Qc6 32. Rxa6 Qxa4 33. Rxa4 Rxc3 34. b5 Rb8 35. Bg3 Rxb5 36. Ra7+ Rc7 37. Rda1 Rbb7 38. Ra8 Rc8 39. Rxc8 Kxc8 40. Ra8+ Rb8 41. Ra7 Rb7 42. Ra8+ Rb8 43. Ra7 Rb7 1/2-1/2

[Event "Bremen Silvester op-B"]
[Site "Bremen"]
[Date "2022.12.27"]
[Round "1"]
[White "Junge, Julia Marie"]
[Black "Hattenhauer, Klaus"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1367"]
[BlackElo "1799"]
[PlyCount "50"]
[EventDate "2022.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 211 Extra"]
[Source "ChessBase"]
[SourceDate "2023.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.01.31"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd8 4. Nf3 Bg4 5. h3 Bh5 6. d4 e6 7. Bf4 c6 8. g4 Bg6 9. Ne5 Nd7 10. Nxg6 hxg6 11. Qe2 Ngf6 12. 0-0-0 Nb6 13. Bg5 Be7 14. Bg2 Nfd5 15. Bxe7 Nxc3 16. bxc3 Qxe7 17. Kd2 Qa3 18. Ra1 Rd8 19. Rhd1 Qa5 20. Kd3 Na4 21. Rab1 Qxc3+ 22. Ke4 Qa5 23. Kf3 Nc3 24. Qe1 Qd5+ 25. Ke3 Qxg2 0-1

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2021.12.30"]
[Round "7"]
[White "Hattenhauer, Klaus"]
[Black "Audenaert, Bart"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "1816"]
[BlackElo "1975"]
[PlyCount "86"]
[EventDate "2021.12.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 g6 3. Nc3 d5 4. e3 Bg7 5. Bd3 0-0 6. h4 c5 7. h5 Nc6 8. hxg6 fxg6 9. Nf3 cxd4 10. exd4 Ng4 11. Qd2 Nxf2 12. Kxf2 Nxd4 13. Rae1 Bg4 14. Kg3 Bxf3 15. gxf3 e5 16. Qh2 Rxf4 17. Qxh7+ Kf8 18. Qh8+ Bxh8 19. Rxh8+ Kg7 20. Rxd8 Rxd8 21. Rxe5 Rxf3+ 22. Kg2 Rdf8 23. Re7+ Kh6 24. Nxd5 Rf2+ 25. Kg1 Rd2 26. Ne3 Rf3 27. Ng4+ Kg5 28. Ne5 Rg3+ 29. Kh1 Nf3 30. Nxf3+ Rxf3 31. Re4 Rff2 32. Kg1 Kh5 33. a4 g5 34. b3 g4 35. Bc4 g3 36. Re5+ Kg4 37. Be6+ Kf4 38. Rf5+ Ke4 39. Rxf2 gxf2+ 40. Kf1 Ke3 41. Bc4 Rxc2 42. a5 Rc1+ 43. Kg2 Rg1+ 0-1

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2021.12.29"]
[Round "6"]
[White "Ditmas, Hugh"]
[Black "Hattenhauer, Klaus"]
[Result "0-1"]
[ECO "D43"]
[WhiteElo "1950"]
[BlackElo "1816"]
[PlyCount "94"]
[EventDate "2021.12.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 c6 5. Bg5 h6 6. Bxf6 Qxf6 7. e3 Bd6 8. Bd3 dxc4 9. Bxc4 0-0 10. 0-0 Qe7 11. Qe2 Nd7 12. Rac1 e5 13. dxe5 Nxe5 14. Nxe5 Qxe5 15. f4 Qe7 16. Qf3 Be6 17. Bd3 Rae8 18. Rce1 Bb4 19. Re2 Bxc3 20. bxc3 Qc5 21. Qe4 f5 22. Qb4 Qxb4 23. cxb4 Rd8 24. Rd1 Rd7 25. Kf2 Rfd8 26. Red2 a6 27. Ke2 Rxd3 28. Rxd3 Bc4 29. a4 Kf7 30. a5 Ke6 31. g3 g6 32. h3 h5 33. R1d2 Rd5 34. Rd1 Kd6 35. g4 c5 36. gxf5 gxf5 37. bxc5+ Kxc5 38. h4 Kb5 39. Rb1+ Kxa5 40. Rbb3 b5 41. Rbc3 Rxd3 42. Rxd3 b4 43. Kd2 Bxd3 44. Kxd3 Kb5 45. e4 fxe4+ 46. Kxe4 b3 47. Kd3 Kc5 0-1

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2021.12.29"]
[Round "5"]
[White "Schroeder, Jan Hendrik"]
[Black "Hattenhauer, Klaus"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1390"]
[BlackElo "1816"]
[PlyCount "126"]
[EventDate "2021.12.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd8 4. Bc4 Nf6 5. Nf3 Bf5 6. 0-0 e6 7. d4 c6 8. Bf4 Bd6 9. Bxd6 Qxd6 10. h3 h6 11. Re1 0-0 12. Qd2 b5 13. Bd3 Bxd3 14. Qxd3 Nbd7 15. Ne4 Qc7 16. Nxf6+ Nxf6 17. Ne5 Rfd8 18. c3 a6 19. Qf3 c5 20. Rac1 Rac8 21. Qe3 cxd4 22. cxd4 Qb6 23. Rxc8 Rxc8 24. Rc1 Rc7 25. Rxc7 Qxc7 26. Qd2 Nd5 27. a3 Ne7 28. Kf1 f6 29. Nd3 Qc4 30. Qc3 Qxc3 31. bxc3 Nd5 32. Nb4 Nxc3 33. Nxa6 Nb1 34. Nc7 Nxa3 35. Nxe6 b4 36. Nc5 Kf7 37. Ke2 Ke7 38. Kd3 Kd6 39. f3 Kd5 40. Nb3 Nb5 41. g3 Nd6 42. g4 g5 43. Nc5 Nb5 44. Nb3 Nc3 45. Nc1 Nd1 46. Na2 Nf2+ 47. Ke3 b3 48. Nc3+ Kc4 49. Nb1 Nxh3 50. Nd2+ Kc3 51. Nxb3 Kxb3 52. d5 Kc4 53. d6 Nf4 54. d7 Ne6 55. Ke4 Nc5+ 56. Kf5 Nxd7 57. Ke6 Kd4 58. Kxd7 Ke5 59. Ke7 f5 60. Kf7 fxg4 61. fxg4 Kf4 62. Kg6 Kxg4 63. Kxh6 Kh4 0-1

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2021.12.28"]
[Round "3"]
[White "Bruehl, Rainer"]
[Black "Hattenhauer, Klaus"]
[Result "0-1"]
[ECO "E62"]
[WhiteElo "1269"]
[BlackElo "1816"]
[PlyCount "126"]
[EventDate "2021.12.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. d4 g6 2. c4 Bg7 3. Nf3 Nf6 4. Nc3 d6 5. g3 0-0 6. Bg2 c6 7. 0-0 a5 8. b3 Bf5 9. Nh4 Bd7 10. Rb1 Na6 11. e4 Qc7 12. d5 Rac8 13. a3 Ng4 14. Bb2 Nf6 15. Re1 e5 16. Bf3 Rb8 17. Ng2 Rfd8 18. Ne3 Ra8 19. h4 h5 20. Bc1 Nh7 21. Nc2 c5 22. a4 Qc8 23. Ne3 Nc7 24. Bg2 Rf8 25. Ne2 f5 26. Bh3 fxe4 27. Bxd7 Qxd7 28. Ng2 Rf7 29. Nc3 Nf6 30. Nxe4 Nxe4 31. Rxe4 Qf5 32. Qe2 Raf8 33. f3 Qxf3 34. Qxf3 Rxf3 35. Kh2 Rf1 36. Re1 R8f2 37. Be3 Rxe1 38. Rxe1 Rb2 39. Bg5 Rxb3 40. Bd8 Ne8 41. Bxa5 Ra3 42. Rb1 Rxa4 43. Bd8 Rb4 44. Rc1 Bf6 45. Ba5 Rb3 46. Rc3 Rxc3 47. Bxc3 Nc7 48. Nf4 Kf7 49. Ne2 Ke8 50. Kg2 Kd7 51. Kf1 b5 52. cxb5 Nxb5 53. Ba5 Bd8 54. Bc3 Nc7 55. Ba5 Nxd5 56. Bxd8 Kxd8 57. Kf2 Kd7 58. Kf3 Nf6 59. Nc1 Ke6 60. Na2 Kf5 61. Nc3 d5 62. Nb5 e4+ 63. Ke2 Ke5 0-1

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2021.12.28"]
[Round "4"]
[White "Hattenhauer, Klaus"]
[Black "Hergenroeder, Cora"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "1816"]
[BlackElo "1449"]
[PlyCount "96"]
[EventDate "2021.12.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Bf5 3. c3 e6 4. e3 a6 5. Bd3 Bxd3 6. Qxd3 Nf6 7. Nbd2 Nbd7 8. 0-0 Be7 9. e4 dxe4 10. Nxe4 0-0 11. Rd1 Re8 12. h3 Nb6 13. Bf4 Nbd5 14. Bh2 Rb8 15. a3 Nxe4 16. Qxe4 Bd6 17. Ne5 Qe7 18. c4 Nf6 19. Qc2 c6 20. b4 Nd7 21. Kh1 Nxe5 22. dxe5 Bc7 23. c5 Rbd8 24. f4 Rxd1+ 25. Rxd1 Rd8 26. Bg1 Rxd1 27. Qxd1 Qd8 28. Qxd8+ Bxd8 29. g3 g6 30. Kg2 f5 31. Kf3 h5 32. Ke2 Kf7 33. Kd3 a5 34. h4 Ke7 35. Kc4 axb4 36. axb4 Kd7 37. Bf2 Bc7 38. Kb3 Bd8 39. Ka4 Bc7 40. b5 Bd8 41. Be1 b6 42. Bf2 bxc5 43. Bxc5 cxb5+ 44. Kxb5 Bc7 45. Bb6 Bb8 46. Bc5 Bc7 47. Ba7 Bd8 48. Bb6 Be7 1/2-1/2

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2021.12.27"]
[Round "1"]
[White "Dahl, Christoph"]
[Black "Hattenhauer, Klaus"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "2369"]
[BlackElo "1816"]
[PlyCount "49"]
[EventDate "2021.12.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd8 4. d4 c6 5. Bc4 Nf6 6. Nf3 Bg4 7. Bxf7+ Kxf7 8. Ne5+ Kg8 9. Nxg4 Nxg4 10. Qxg4 Qd7 11. Qe4 Na6 12. 0-0 e6 13. Bf4 Bd6 14. Bxd6 Qxd6 15. Rfe1 Nc7 16. Rad1 h5 17. Qe5 Qd7 18. Ne4 b6 19. Rd3 Rf8 20. Rg3 Rh6 21. Rg5 Rf5 22. Rxf5 exf5 23. Ng5 Rf6 24. Qxc7 Qxc7 25. Re8+ 1-0

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2021.12.27"]
[Round "2"]
[White "Hattenhauer, Klaus"]
[Black "Van Gaalen, Jakob"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1816"]
[BlackElo "1395"]
[PlyCount "62"]
[EventDate "2021.12.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 0-0 5. Bd3 d5 6. Nbd2 Bg4 7. h3 Bxf3 8. Qxf3 e6 9. 0-0 Nbd7 10. c4 Re8 11. cxd5 Nxd5 12. Bh2 c6 13. Nc4 Bf8 14. a3 b5 15. Nd2 Rc8 16. Rfd1 a6 17. Ne4 e5 18. dxe5 Nxe5 19. Qe2 Qe7 20. Bc2 Bg7 21. Nd2 c5 22. Nf1 Red8 23. a4 c4 24. axb5 axb5 25. Ra5 Qb4 26. Rda1 Rb8 27. e4 Nc7 28. f4 Nc6 29. R5a2 Nd4 30. Qf2 Qc5 31. f5 Ne2+ 0-1

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2019.12.30"]
[Round "7"]
[White "Hattenhauer, Klaus"]
[Black "Schroeder, Harm"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "1865"]
[BlackElo "1723"]
[PlyCount "111"]
[EventDate "2019.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Nf6 3. e3 e6 4. Nf3 Be7 5. Nbd2 Nbd7 6. c3 0-0 7. Bd3 c5 8. Ne5 b6 9. Nc6 Qe8 10. h4 c4 11. Bc2 Bb7 12. Nxe7+ Qxe7 13. Nf3 Ne4 14. Ng5 Nef6 15. Nf3 Ne4 16. Qe2 f6 17. 0-0-0 e5 18. dxe5 Nxe5 19. Bxe4 dxe4 20. Nxe5 fxe5 21. Qxc4+ Kh8 22. Bg3 Rac8 23. Qb5 Qe6 24. Kb1 Rfe8 25. Qd7 Ba6 26. Qxe6 Rxe6 27. Rd7 Bd3+ 28. Ka1 a6 29. h5 h6 30. Rh4 Rce8 31. Rg4 R8e7 32. Rxe7 Rxe7 33. Rg6 Be2 34. Rxb6 Rd7 35. a4 Rd1+ 36. Ka2 Bxh5 37. Rxa6 Bf7+ 38. Ka3 Ra1+ 39. Kb4 Rb1 40. Bxe5 Rxb2+ 41. Kc5 Rxf2 42. Rxh6+ Kg8 43. Rh4 Bg6 44. Rg4 Kh7 45. Kb6 Re2 46. Bd4 Rb2+ 47. Ka6 Rb8 48. Ka7 Rd8 49. a5 Rd7+ 50. Kb8 Bf5 51. Rxg7+ Rxg7 52. Bxg7 Kxg7 53. a6 Be6 54. a7 Bd5 55. a8Q Bxa8 56. Kxa8 1-0

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2019.12.29"]
[Round "5"]
[White "Hattenhauer, Klaus"]
[Black "Roessing, Jona"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "1865"]
[BlackElo "1545"]
[PlyCount "67"]
[EventDate "2019.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 g6 3. e3 Bg7 4. h3 0-0 5. Nf3 c5 6. Be2 Nc6 7. 0-0 d5 8. c3 c4 9. Nbd2 b5 10. Ne5 Bb7 11. b3 Nd7 12. Nxd7 Qxd7 13. bxc4 dxc4 14. Rb1 e5 15. Bh2 a5 16. Nf3 exd4 17. Nxd4 Nxd4 18. exd4 Be4 19. Rb2 b4 20. Bxc4 bxc3 21. Re2 Bxg2 22. Bxf7+ Qxf7 23. Kxg2 Qf3+ 24. Kg1 Qxh3 25. Re3 Qd7 26. Qb3+ Kh8 27. Rxc3 Bxd4 28. Rc7 Qf5 29. Qb7 Bxf2+ 30. Kh1 Qf3+ 31. Qxf3 Rxf3 32. Kg2 Rf5 33. Rxf2 Raf8 34. Be5+ 1-0

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2019.12.29"]
[Round "6"]
[White "Pollmann, Sascha"]
[Black "Hattenhauer, Klaus"]
[Result "1-0"]
[ECO "A39"]
[WhiteElo "2118"]
[BlackElo "1865"]
[PlyCount "99"]
[EventDate "2019.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 Nf6 3. g3 g6 4. Bg2 Bg7 5. Nc3 0-0 6. d4 cxd4 7. Nxd4 Nc6 8. 0-0 a6 9. c5 Rb8 10. Bf4 Ra8 11. Nb3 Nh5 12. Be3 Na5 13. Nxa5 Qxa5 14. Qb3 Nf6 15. h3 d6 16. cxd6 exd6 17. Rad1 Be6 18. Qa4 Qc7 19. Bf4 Rad8 20. Qb4 Ne8 21. Ne4 Qc2 22. Rd2 Qc8 23. Nxd6 Nxd6 24. Bxd6 Rfe8 25. Bxb7 Qc4 26. b3 Qxb4 27. Bxb4 Rb8 28. Bc6 Rec8 29. Bd6 Rb6 30. Bg2 h5 31. Rfd1 Bh6 32. e3 Bf8 33. Bxf8 Kxf8 34. Rd8+ Rxd8 35. Rxd8+ Ke7 36. Rd4 Rd6 37. Kf1 Bf5 38. Ke2 Bb1 39. a3 Bc2 40. Rxd6 Kxd6 41. b4 Ba4 42. Kd3 a5 43. Kc4 axb4 44. axb4 Bd7 45. b5 Be6+ 46. Kd4 Kc7 47. Kc5 f6 48. b6+ Kb8 49. Kd6 Bc8 50. Ke7 1-0

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2019.12.28"]
[Round "3"]
[White "Hattenhauer, Klaus"]
[Black "Lambers, Gabriel"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "1865"]
[BlackElo "1629"]
[PlyCount "37"]
[EventDate "2019.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 d5 3. e3 c5 4. Nf3 Bg4 5. Be2 Nc6 6. c3 e6 7. Nbd2 Bd6 8. dxc5 Bxc5 9. h3 Bh5 10. 0-0 Bd6 11. Re1 Bxf4 12. exf4 0-0 13. Ne5 Bxe2 14. Qxe2 Qb6 15. Rab1 Rad8 16. g4 Nd7 17. Nb3 Ndxe5 18. fxe5 d4 19. cxd4 1/2-1/2

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2019.12.28"]
[Round "4"]
[White "Koerber, Uwe"]
[Black "Hattenhauer, Klaus"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "1762"]
[BlackElo "1865"]
[PlyCount "107"]
[EventDate "2019.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd8 4. d4 g6 5. Bc4 Bg7 6. Qf3 Nf6 7. Nge2 c6 8. h3 0-0 9. Bg5 Nbd7 10. 0-0-0 Nb6 11. Bb3 a5 12. a4 Nfd5 13. Ne4 Qc7 14. g4 Be6 15. Nc5 Nd7 16. Nxe6 fxe6 17. Qe4 N7f6 18. Qxe6+ Kh8 19. Ng3 h6 20. Bd2 Nf4 21. Qe3 N6d5 22. Bxd5 Nxd5 23. Qe4 Rxf2 24. Qxg6 Rxd2 25. Rxd2 Qxg3 26. g5 Qxg5 27. Qxg5 hxg5 28. c3 Bf6 29. Kb1 Kg7 30. Rf2 Rh8 31. Rf3 Rh4 32. Ka2 Kf7 33. Kb3 Rf4 34. Rhf1 Rxf3 35. Rxf3 Kg6 36. Kc4 b6 37. b4 axb4 38. cxb4 Nc7 39. a5 bxa5 40. bxa5 Nb5 41. Rd3 Kf5 42. a6 Ke4 43. Rd1 Ke3 44. Rb1 Bxd4 45. Re1+ Kf2 46. Rxe7 Kg3 47. Re4 Ba7 48. Rg4+ Kxh3 49. Rxg5 Nd6+ 50. Kb4 Nb5 51. Rg6 Nd4 52. Kc4 Kh4 53. Rg7 Bb6 54. Rb7 1-0

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2019.12.27"]
[Round "2"]
[White "Celik, Abdullah1111"]
[Black "Hattenhauer, Klaus"]
[Result "1-0"]
[ECO "E18"]
[WhiteElo "2048"]
[BlackElo "1865"]
[PlyCount "71"]
[EventDate "2019.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 b6 5. Bg2 Bb7 6. cxd5 exd5 7. 0-0 Be7 8. Nc3 0-0 9. Bg5 h6 10. Bf4 Bd6 11. Bxd6 Qxd6 12. Nh4 Qd7 13. b4 Nc6 14. b5 Ne7 15. e3 a6 16. a4 c6 17. bxc6 Bxc6 18. Nf3 Rfd8 19. Ne5 Qd6 20. Qb3 Be8 21. Rfc1 Rab8 22. Bf1 Ra8 23. Rab1 Rdb8 24. Bd3 b5 25. axb5 axb5 26. Nxb5 Bxb5 27. Bxb5 Ra5 28. Qd3 Ne4 29. Qe2 Ra3 30. Bd3 Rxb1 31. Bxb1 Rc3 32. Rxc3 Nxc3 33. Qc2 Qb4 34. Qh7+ Kf8 35. Qh8+ Ng8 36. Bh7 1-0

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2019.12.27"]
[Round "1"]
[White "Hattenhauer, Klaus"]
[Black "Jathe, Tim"]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "1865"]
[PlyCount "91"]
[EventDate "2019.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 c5 3. e3 cxd4 4. exd4 e6 5. c3 d5 6. Nf3 Bd6 7. Ne5 0-0 8. Nd2 Nc6 9. Bd3 Qc7 10. Ndf3 Ne4 11. Bg3 b6 12. Nxc6 Bxg3 13. hxg3 Qxc6 14. Ne5 Qc7 15. Qh5 h6 16. Ng4 f5 17. Ne5 a5 18. Rc1 b5 19. Bxb5 Rb8 20. a4 Nf6 21. Qe2 Nd7 22. Nc6 Rb6 23. Nxa5 f4 24. b4 fxg3 25. 0-0 e5 26. fxg3 e4 27. Rxf8+ Nxf8 28. Qe3 Bg4 29. c4 dxc4 30. Nxc4 Rf6 31. Ne5 Qe7 32. Nxg4 Re6 33. Bc4 Qxb4 34. Qb3 Qd6 35. Bxe6+ Nxe6 36. Rd1 Kh8 37. Ne5 Ng5 38. Nf7+ Nxf7 39. Qxf7 Qxg3 40. Qe8+ Kh7 41. Qxe4+ Kh8 42. Rf1 Kg8 43. a5 Qa3 44. Qe6+ Kh7 45. a6 Qc3 46. Qe4+ 1-0

[Event "Bremen-ch"]
[Site "Bremen"]
[Date "2019.04.20"]
[Round "9.8"]
[White "Yavarpoor, Mohammad"]
[Black "Hattenhauer, Klaus"]
[Result "1-0"]
[ECO "C30"]
[WhiteElo "1834"]
[BlackElo "1884"]
[PlyCount "67"]
[EventDate "2019.04.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 d5 2. f3 dxe4 3. fxe4 e5 4. Nf3 Bc5 5. Bc4 Nf6 6. d3 h6 7. Qe2 Nc6 8. Be3 Nd4 9. Nxd4 Bxd4 10. c3 Bg4 11. Qf2 Bxe3 12. Qxe3 Qe7 13. 0-0 Be6 14. Nd2 c6 15. Rad1 0-0 16. h3 b5 17. Bxe6 Qxe6 18. Qg3 Nh5 19. Qe3 Nf4 20. Nf3 Ng6 21. a3 a5 22. d4 Rfd8 23. h4 Qg4 24. Rd2 exd4 25. cxd4 Nxh4 26. Ne5 Qe6 27. Rxf7 Rf8 28. Rdf2 Rxf7 29. Rxf7 g5 30. Qf2 Re8 31. Rf6 Qe7 32. g3 Kh8 33. gxh4 gxh4 34. Ng6+ 1-0

[Event "Bremen-ch"]
[Site "Bremen"]
[Date "2019.04.19"]
[Round "8.11"]
[White "Hattenhauer, Klaus"]
[Black "Masehin, Maxim"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "1884"]
[PlyCount "31"]
[EventDate "2019.04.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 d5 3. e3 c5 4. Nf3 Nc6 5. dxc5 Qa5+ 6. c3 Qxc5 7. h3 Qb6 8. Qb3 Qxb3 9. axb3 Bf5 10. Na3 e6 11. Nb5 0-0-0 12. Nxa7+ Nxa7 13. Rxa7 Bd6 14. Ne5 Bxe5 15. Bxe5 Bc2 16. Bb5 1-0

[Event "Bremen-ch"]
[Site "Bremen"]
[Date "2019.04.18"]
[Round "7.13"]
[White "Behrens, Soeren"]
[Black "Hattenhauer, Klaus"]
[Result "1/2-1/2"]
[ECO "B01"]
[WhiteElo "1650"]
[BlackElo "1884"]
[PlyCount "85"]
[EventDate "2019.04.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd8 4. d4 g6 5. Nf3 Bg7 6. Be3 Nh6 7. Qd2 Nf5 8. 0-0-0 Nxe3 9. fxe3 c6 10. Bc4 e6 11. g4 b5 12. Be2 Bb7 13. Kb1 a5 14. Ne4 Na6 15. Nc5 Nxc5 16. dxc5 Qxd2 17. Rxd2 Rd8 18. Rxd8+ Kxd8 19. Rd1+ Ke7 20. a3 h5 21. g5 Rd8 22. Rxd8 Kxd8 23. Nd4 Be5 24. Nf3 Bc7 25. b4 axb4 26. axb4 e5 27. e4 Bc8 28. c4 bxc4 29. Bxc4 Ke7 30. Kc2 Bg4 31. Be2 f6 32. gxf6+ Kxf6 33. h4 Bxf3 34. Bxf3 g5 35. hxg5+ Kxg5 36. Kd2 h4 37. Ke2 Kf4 38. Kf2 Bd8 39. Be2 h3 40. b5 Be7 41. Kg1 Bxc5+ 42. Kh1 cxb5 43. Bxb5 1/2-1/2

[Event "Bremen-ch"]
[Site "Bremen"]
[Date "2019.04.17"]
[Round "6.5"]
[White "Hattenhauer, Klaus"]
[Black "Buescher, Andre"]
[Result "0-1"]
[ECO "E61"]
[WhiteElo "1884"]
[BlackElo "1993"]
[PlyCount "58"]
[EventDate "2019.04.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 g6 3. e3 Bg7 4. Nf3 d6 5. h3 0-0 6. c4 c5 7. Nc3 cxd4 8. exd4 Qb6 9. Be3 Bf5 10. Qb3 Nc6 11. Rc1 Rfc8 12. Qxb6 axb6 13. a3 Na5 14. Nd2 d5 15. g4 Be6 16. Bg2 Rd8 17. cxd5 Nxd5 18. Nxd5 Bxd5 19. Bxd5 Rxd5 20. 0-0 Bxd4 21. Bxd4 Rxd4 22. Nf3 Rd3 23. Kg2 Nc6 24. Rfe1 Rb3 25. Rc2 Rxf3 26. Kxf3 Nd4+ 27. Ke4 Nxc2 28. Rc1 Rc8 29. Kd3 Nb4+ 0-1

[Event "Bremen-ch"]
[Site "Bremen"]
[Date "2019.04.16"]
[Round "5.12"]
[White "Dietrich, Igor"]
[Black "Hattenhauer, Klaus"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1654"]
[BlackElo "1884"]
[PlyCount "72"]
[EventDate "2019.04.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd8 4. d4 Nf6 5. Nf3 Bg4 6. Bc4 e6 7. a3 c6 8. Be3 Bd6 9. h3 Bh5 10. g4 Bg6 11. Qd2 Ne4 12. Nxe4 Bxe4 13. Qe2 Nd7 14. Rg1 h6 15. g5 hxg5 16. Nxg5 Bf5 17. 0-0-0 Qe7 18. Bd3 0-0-0 19. Bxf5 exf5 20. Qd3 f6 21. Nf3 Qe4 22. Ne1 g5 23. Qf1 Nb6 24. Bd2 Bf4 25. c3 Rde8 26. Nc2 Bxd2+ 27. Rxd2 Rh7 28. Rh1 Reh8 29. Re2 Qd5 30. Re3 f4 31. Rd3 Qb5 32. Qg2 Qxd3 33. Qg4+ f5 34. Qxg5 Qe2 35. Qxf5+ Nd7 36. Nb4 Rxh3 0-1

[Event "Bremen-ch"]
[Site "Bremen"]
[Date "2019.04.15"]
[Round "4.11"]
[White "Hattenhauer, Klaus"]
[Black "Roehl, Bernd"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "1884"]
[BlackElo "1682"]
[PlyCount "82"]
[EventDate "2019.04.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Nf6 3. e3 c5 4. c3 Nc6 5. Bd3 Bg4 6. Qc1 Rc8 7. h3 Bh5 8. Bc2 Qa5 9. Nd2 cxd4 10. exd4 Qb6 11. Ngf3 Bg6 12. 0-0 Bxc2 13. Qxc2 Nxd4 14. Nxd4 Qxd4 15. Be3 Qe5 16. Bxa7 Qc7 17. Bd4 Nd7 18. Rfe1 f6 19. Qf5 e5 20. Be3 Kf7 21. Nf3 h6 22. Nh4 Qc6 23. Qg6+ Kg8 24. Nf5 e4 25. Nxh6+ Rxh6 26. Bxh6 Ne5 27. Qg3 Nd3 28. Re2 f5 29. Be3 Qc4 30. Rc2 Rc6 31. h4 Qa6 32. h5 Rf6 33. Bg5 f4 34. Qg4 Rf7 35. Rd2 Ne5 36. Qe2 Qe6 37. Qb5 Qg4 38. Rxd5 f3 39. g3 Nd3 40. Rxd3 exd3 41. Qxd3 Qxg5 1/2-1/2

[Event "Bremen-ch"]
[Site "Bremen"]
[Date "2019.04.14"]
[Round "2.14"]
[White "Hattenhauer, Klaus"]
[Black "Goes, Carsten"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "1884"]
[BlackElo "1714"]
[PlyCount "51"]
[EventDate "2019.04.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 c5 3. e3 d5 4. c3 Nc6 5. Nf3 Qb6 6. Qb3 c4 7. Qxb6 axb6 8. Nbd2 b5 9. Ne5 Bf5 10. Be2 e6 11. 0-0 Be7 12. a3 h6 13. h3 Nd7 14. Nxc6 bxc6 15. Rfe1 0-0 16. Bf3 Nb6 17. e4 Bg6 18. Nf1 Ra7 19. exd5 cxd5 20. Rad1 Na4 21. Rd2 Bf6 22. Ne3 h5 23. g4 hxg4 24. hxg4 Bd8 25. Bd6 Ba5 26. Bxf8 1-0

[Event "Bremen-ch"]
[Site "Bremen"]
[Date "2019.04.14"]
[Round "3.5"]
[White "Stieglitz, Dirk"]
[Black "Hattenhauer, Klaus"]
[Result "1-0"]
[ECO "A25"]
[WhiteElo "2022"]
[BlackElo "1884"]
[PlyCount "97"]
[EventDate "2019.04.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. c4 e5 2. g3 Nf6 3. Bg2 Nc6 4. Nc3 a6 5. a3 d6 6. d3 h6 7. e3 Bd7 8. Nge2 Qc8 9. h3 g6 10. b4 Ne7 11. a4 Bc6 12. e4 Bg7 13. Be3 0-0 14. 0-0 Bd7 15. Kh2 Be6 16. Nd5 Nfxd5 17. cxd5 Bd7 18. Rc1 Qd8 19. a5 Rc8 20. d4 Bb5 21. Re1 Bxe2 22. Rxe2 exd4 23. Bxd4 Bxd4 24. Qxd4 c6 25. Rec2 Qd7 26. h4 cxd5 27. Rxc8 Rxc8 28. Bh3 f5 29. Rxc8+ Qxc8 30. exf5 gxf5 31. Qf6 Qf8 32. Qxd6 Kf7 33. Bg2 Qc8 34. Qxh6 Qc2 35. Qf4 Qc4 36. Qd2 d4 37. Kg1 Nd5 38. Qg5 Ne7 39. Qh5+ Kf8 40. Qh6+ Kf7 41. Qd6 Qc3 42. Bf1 Kf8 43. h5 d3 44. Bxd3 Qc1+ 45. Bf1 f4 46. g4 f3 47. Qf6+ Ke8 48. h6 Qc6 49. Qxc6+ 1-0

[Event "Bremen-ch"]
[Site "Bremen"]
[Date "2019.04.13"]
[Round "1.17"]
[White "Barseghyan, Narek1111"]
[Black "Hattenhauer, Klaus"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1481"]
[BlackElo "1884"]
[PlyCount "146"]
[EventDate "2019.04.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd8 4. Nf3 Bg4 5. h3 Bh5 6. Be2 e6 7. a3 Nf6 8. d3 h6 9. 0-0 Nc6 10. Ne5 Bxe2 11. Qxe2 Nd4 12. Qd1 Bd6 13. Nf3 Nf5 14. Nb5 c6 15. Nxd6+ Qxd6 16. Bd2 Nd5 17. c4 Nf6 18. Bc3 Rd8 19. Qb3 0-0 20. d4 Qc7 21. c5 Nd5 22. Be1 Nf4 23. Qa4 b6 24. cxb6 axb6 25. Bb4 Rfe8 26. Bc3 Ne2+ 27. Kh1 Rd5 28. Rfe1 Nxc3 29. bxc3 Ra5 30. Qb3 Rea8 31. Re5 Ra4 32. Re2 Nd6 33. Rea2 Qa7 34. Nd2 b5 35. Kg1 Qe7 36. g3 Qg5 37. h4 Qg6 38. Nf3 Nc4 39. Nd2 Nd6 40. Nf3 Nc4 41. Nd2 Qd3 42. Nb1 Nd6 43. Qb2 Qf3 44. Qe2 Qxe2 45. Rxe2 Nc4 46. Rea2 Kf8 47. Kg2 Ke7 48. Kf3 e5 49. dxe5 Nxe5+ 50. Kg2 Nc4 51. f4 c5 52. Re2+ Kf6 53. Nd2 Nxd2 54. Rxd2 Rxa3 55. Rb1 Ra2 56. Rbd1 Rxd2+ 57. Rxd2 Ra3 58. Rd6+ Ke7 59. Rb6 Rb3 60. Kf2 Kd7 61. Rb7+ Kc6 62. Rxf7 Rxc3 63. Rxg7 b4 64. Rg8 b3 65. Ke2 c4 66. f5 Kd5 67. Rd8+ Ke5 68. g4 Rg3 69. Re8+ Kf6 70. Re6+ Kf7 71. Kd2 c3+ 72. Ke1 Rxg4 73. Re3 b2 0-1

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2018.12.30"]
[Round "7"]
[White "Reuker, Matthias"]
[Black "Hattenhauer, Klaus"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "2036"]
[BlackElo "1836"]
[PlyCount "98"]
[EventDate "2018.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nf3 g6 4. Nc3 Qd8 5. Bc4 Bg7 6. d4 Nh6 7. Bf4 c6 8. Qd2 Nf5 9. 0-0-0 0-0 10. h3 Nd7 11. Bb3 Nf6 12. g4 Nd6 13. Rhe1 e6 14. Bh6 Nd5 15. Bxg7 Kxg7 16. Ne5 Nxc3 17. Qxc3 Nb5 18. Qe3 Nc7 19. c4 Qe8 20. Qf4 Qe7 21. Kb1 Ne8 22. h4 Nf6 23. h5 Ng8 24. hxg6 fxg6 25. Qh2 Nf6 26. Rh1 Kg8 27. Bc2 Qg7 28. Rd3 Bd7 29. Rh3 Be8 30. f4 Rd8 31. f5 exf5 32. gxf5 Rxd4 33. fxg6 Ng4 34. Nxg4 Bxg6 35. Nh6+ Kh8 36. Bxg6 Qxg6+ 37. Qc2 Qxc2+ 38. Kxc2 Rxc4+ 39. Kd3 Rcf4 40. Ke3 R4f6 41. Ng4 Re6+ 42. Kd3 Rd8+ 43. Kc3 Rd7 44. Rg1 Rg7 45. Rgh1 Rxg4 46. Rxh7+ Kg8 47. Rxb7 Rg3+ 48. Kb4 Rg4+ 49. Ka5 Re5+ 0-1

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2018.12.29"]
[Round "6"]
[White "Hattenhauer, Klaus"]
[Black "Summers, Jan"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "1836"]
[BlackElo "1692"]
[PlyCount "141"]
[EventDate "2018.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Nf6 3. e3 e6 4. Nf3 Nbd7 5. c3 Ne4 6. Nbd2 Ndf6 7. Bd3 Nxd2 8. Qxd2 Bd6 9. Bg5 0-0 10. Qc2 h6 11. Bh4 Be7 12. Bg3 Bd6 13. 0-0-0 Bd7 14. Ne5 Nh5 15. Qe2 Nxg3 16. hxg3 Bxe5 17. dxe5 a6 18. Qg4 f5 19. Qg6 Qg5 20. Qxg5 hxg5 21. Rh5 g4 22. Rdh1 Kf7 23. f3 gxf3 24. gxf3 Ke7 25. Rg5 Rf7 26. Rh7 Rg8 27. b3 g6 28. Rh6 Rfg7 29. Kb2 c6 30. Ka3 Kd8 31. Rh4 Be8 32. Kb4 Bf7 33. a4 Kc7 34. c4 Kb6 35. c5+ Kc7 36. g4 Be8 37. Rh3 Bd7 38. f4 Bc8 39. Rg3 Bd7 40. a5 Kd8 41. Kc3 Ke7 42. gxf5 exf5 43. Rg1 Be6 44. Ra1 Ra8 45. Ra4 Ra7 46. Be2 Kf7 47. Rb4 Ke7 48. Rg2 Kf7 49. Rh2 Bd7 50. Rd4 Be6 51. Rd1 Ra8 52. Rdh1 Rag8 53. Bd1 Bd7 54. Rh6 Be6 55. Kd2 Bd7 56. Ke1 Be6 57. Rg1 Ke7 58. Rg5 Kf8 59. Kf2 Ke7 60. Bc2 Kf8 61. Kg3 Ke7 62. Kh4 Bf7 63. Rg1 Be6 64. Kg5 Bf7 65. Rgh1 Be6 66. Rh7 Rxh7 67. Rxh7+ Bf7 68. Bd3 Ke6 69. b4 Ke7 70. Rh6 Be8 71. e6 1-0

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2018.12.29"]
[Round "5"]
[White "Kohlmann, Marco"]
[Black "Hattenhauer, Klaus"]
[Result "1/2-1/2"]
[ECO "B01"]
[BlackElo "1836"]
[PlyCount "86"]
[EventDate "2018.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd8 4. d4 g6 5. Bc4 Bg7 6. Nge2 Nh6 7. Ne4 Nf5 8. c3 Nd6 9. Nxd6+ cxd6 10. Bf4 0-0 11. 0-0 Nd7 12. Qd2 Nf6 13. Ng3 Qc7 14. Bb3 a5 15. a3 b5 16. Bh6 Bb7 17. Bxg7 Kxg7 18. Rfe1 e6 19. Rac1 Qc6 20. f3 Qb6 21. Kh1 Rab8 22. Qg5 h6 23. Qd2 Ba8 24. Ba2 b4 25. axb4 axb4 26. c4 b3 27. Bb1 Bc6 28. Qd3 Bd7 29. Rc3 d5 30. c5 Qb5 31. Qd1 Qa4 32. Ree3 Rb4 33. Ne2 Rfb8 34. Qc1 Rc4 35. Bd3 Rxc3 36. Qxc3 Ne8 37. h4 Nf6 38. Kh2 Bb5 39. Bxb5 Qxb5 40. Nc1 Qf1 41. Qe1 Qc4 42. Qc3 Qf1 43. Qe1 Qc4 1/2-1/2

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2018.12.28"]
[Round "3"]
[White "Anderberg, Peter"]
[Black "Hattenhauer, Klaus"]
[Result "1/2-1/2"]
[ECO "D35"]
[WhiteElo "2011"]
[BlackElo "1836"]
[PlyCount "29"]
[EventDate "2018.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 c6 6. Qc2 Be7 7. e3 Be6 8. Bd3 Nbd7 9. Nge2 h6 10. Bh4 Nh5 11. Bxe7 Qxe7 12. Ng3 Nxg3 13. hxg3 Nf6 14. Bf5 Qd7 15. Bxe6 1/2-1/2

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2018.12.28"]
[Round "4"]
[White "Hattenhauer, Klaus"]
[Black "Pahl, Theis"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "1836"]
[BlackElo "2021"]
[PlyCount "130"]
[EventDate "2018.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 g6 3. e3 Bg7 4. h3 d5 5. Nf3 0-0 6. Bd3 c5 7. c3 cxd4 8. exd4 Nc6 9. 0-0 a6 10. a4 Bd7 11. Nbd2 Rc8 12. Re1 Re8 13. Ne5 Nxe5 14. dxe5 Nh5 15. Bh2 Bh6 16. Nf3 Qb6 17. Rb1 Red8 18. Nd4 Ng7 19. Kh1 Ne6 20. Nxe6 Bxe6 21. f4 d4 22. Bg1 Bxf4 23. cxd4 Bd5 24. Be4 Bh6 25. Qf3 Qc6 26. Bxd5 Qxd5 27. Rf1 Rd7 28. b4 Rc4 29. Qxd5 Rxd5 30. Rf3 e6 31. Kh2 Rd7 32. Kg3 Bd2 33. Rfb3 Bc3 34. Rc1 Rdc7 35. b5 Bxd4 36. Rxc4 Rxc4 37. Bxd4 Rxd4 38. bxa6 bxa6 39. Rb8+ Kg7 40. Ra8 Rxa4 41. Kf3 g5 42. Ra7 Kg6 43. g4 Ra3+ 44. Kg2 Ra5 45. Kf3 Ra3+ 46. Kg2 a5 47. Kh2 a4 48. Ra8 Kg7 49. Ra7 Re3 50. Rxa4 Rxe5 51. Ra7 Kg6 52. Ra8 f5 53. Rg8+ Kf6 54. gxf5 exf5 55. Rh8 Kg6 56. Rg8+ Kh5 57. Ra8 Re3 58. Ra4 f4 59. Ra7 h6 60. Ra6 Re2+ 61. Kg1 Rc2 62. Rb6 Kh4 63. Rxh6+ Kg3 64. Kf1 f3 65. Re6 Rc1+ 0-1

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2018.12.27"]
[Round "2"]
[White "Hattenhauer, Klaus"]
[Black "Kipke, Mark"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "1836"]
[BlackElo "1527"]
[PlyCount "77"]
[EventDate "2018.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Nf6 3. e3 e6 4. Nf3 c5 5. c3 Nc6 6. Nbd2 a6 7. Bd3 c4 8. Bc2 Be7 9. Ne5 Bd7 10. h3 b5 11. a3 a5 12. 0-0 0-0 13. Re1 b4 14. Nxd7 Qxd7 15. Ba4 Rfc8 16. e4 dxe4 17. Nxc4 Nd5 18. Ne5 Qb7 19. Bxc6 Rxc6 20. Nxc6 Qxc6 21. Bd2 bxc3 22. Rc1 Qb7 23. Bxc3 Nf4 24. Rc2 Rd8 25. Qg4 Qb3 26. Qxf4 Qxc2 27. Qxe4 Qb3 28. Qc6 h6 29. Qc7 Bf6 30. Qxa5 Rd5 31. Qa8+ Kh7 32. Qa7 Rg5 33. Qa8 Qc2 34. Qe4+ Qxe4 35. Rxe4 Rd5 36. a4 Rd6 37. a5 Bd8 38. Re1 Bc7 39. Ra1 1-0

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2018.12.27"]
[Round "1"]
[White "Hoeffer, David"]
[Black "Hattenhauer, Klaus"]
[Result "1-0"]
[ECO "E11"]
[WhiteElo "2259"]
[BlackElo "1836"]
[PlyCount "83"]
[EventDate "2018.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Bb4+ 5. Bd2 Bxd2+ 6. Nbxd2 Nc6 7. Bg2 0-0 8. 0-0 Re8 9. Rc1 Ne7 10. Qc2 c6 11. Rfd1 Bd7 12. e4 Nxe4 13. Nxe4 dxe4 14. Qxe4 Ng6 15. h4 h6 16. h5 Nf8 17. Ne5 Qg5 18. Qe2 Rad8 19. Rc3 Qe7 20. c5 Rb8 21. Nc4 Red8 22. Nd6 Nh7 23. Qe5 Qg5 24. f4 Qxe5 25. dxe5 Be8 26. Ra3 a6 27. Rad3 Rd7 28. Be4 Nf8 29. Kf2 Re7 30. Ke3 Nh7 31. Rb3 f5 32. Bf3 Nf8 33. Rd4 Nd7 34. Rc4 Nf8 35. Rcb4 g5 36. Rxb7 Rexb7 37. Rxb7 Rxb7 38. Nxb7 g4 39. Be2 Bd7 40. Nd6 a5 41. a4 Nh7 42. b4 1-0

[Event "Bremen-ch op"]
[Site "Bremen"]
[Date "2018.03.31"]
[Round "9"]
[White "Alhamid, Mohamad"]
[Black "Hattenhauer, Klaus"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1522"]
[BlackElo "1758"]
[PlyCount "74"]
[EventDate "2018.03.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 c6 5. Nf3 Bg4 6. Bd2 e6 7. h3 Bh5 8. a3 Qb6 9. Bc4 Bxf3 10. gxf3 Qxd4 11. Bg5 Qxd1+ 12. Rxd1 Be7 13. Bxe7 Nxe7 14. Rg1 Nf5 15. Ne4 Nd7 16. b4 Ne5 17. Be2 Rd8 18. Rb1 0-0 19. Nc5 b6 20. Ne4 Nd4 21. Rg3 Nxc2+ 22. Kf1 Nd4 23. f4 Nxe2 24. Kxe2 Ng6 25. Rbg1 Nxf4+ 26. Ke3 Nd5+ 27. Kf3 g6 28. Rc1 Ne7 29. Kg2 Kg7 30. b5 c5 31. a4 Rd4 32. Nc3 Nd5 33. Nxd5 exd5 34. a5 Rb4 35. Rg5 d4 36. Rd1 f5 37. Re1 Rxb5 0-1

[Event "Bremen-ch op"]
[Site "Bremen"]
[Date "2018.03.30"]
[Round "8"]
[White "Hattenhauer, Klaus"]
[Black "Hochhuth, Arnd"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1758"]
[BlackElo "1927"]
[PlyCount "112"]
[EventDate "2018.03.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 e6 3. e3 c5 4. Nf3 Nc6 5. c3 d5 6. Nbd2 cxd4 7. exd4 Bd6 8. Ne5 Bxe5 9. dxe5 Nd7 10. Nf3 b6 11. Bb5 Bb7 12. Nd4 Nxd4 13. cxd4 a6 14. Bd3 b5 15. 0-0 h6 16. Qg4 Kf8 17. Be3 Nb6 18. b3 Nc8 19. f4 g6 20. f5 exf5 21. Bxf5 h5 22. Qf3 gxf5 23. Qxf5 Qe8 24. Qf6 Rh7 25. Bh6+ Kg8 26. Rf5 Ne7 27. Qg5+ Kh8 28. Qf6+ Kg8 29. Rf3 Ng6 30. Bd2 Qe6 31. Qg5 Qg4 32. Qe3 Qe4 33. Raf1 Qxe3+ 34. Bxe3 Bc8 35. Rf6 Be6 36. Rc1 Ra7 37. Rc6 Ne7 38. Rb6 Kg7 39. Rf1 Rh8 40. Bg5 Re8 41. Bf6+ Kg6 42. Bh4 Nf5 43. Bf2 Rc8 44. a4 bxa4 45. bxa4 Rc4 46. a5 Ra4 47. h3 h4 48. Kh2 Rxa5 49. Rc1 Rb5 50. Rbc6 a5 51. Ra1 a4 52. Rc3 Rb4 53. Rca3 Bd7 54. R1a2 Rab7 55. g4 hxg3+ 56. Bxg3 Rb2+ 0-1

[Event "Bremen-ch op"]
[Site "Bremen"]
[Date "2018.03.29"]
[Round "7"]
[White "Buescher, Andre"]
[Black "Hattenhauer, Klaus"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "2046"]
[BlackElo "1758"]
[PlyCount "79"]
[EventDate "2018.03.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nf3 Bg4 4. Be2 Nf6 5. d4 e6 6. h3 Bh5 7. 0-0 Nc6 8. Be3 Be7 9. c4 Qd7 10. Qb3 Qc8 11. Nc3 0-0 12. d5 Bxf3 13. Bxf3 Ne5 14. Be2 exd5 15. cxd5 a6 16. a4 Kh8 17. Rac1 Qd7 18. Rfd1 Ne8 19. f4 Ng6 20. Qxb7 Nd6 21. Qc6 Qxc6 22. dxc6 Nf5 23. Bf2 Nxf4 24. Bf1 Nd6 25. b4 h6 26. g3 Ne6 27. h4 Rfe8 28. Nd5 Bf8 29. Bh3 Rac8 30. Re1 f5 31. Re5 Nd8 32. Rxe8 Nxe8 33. Bxf5 Rb8 34. Bd7 Nf6 35. Nxc7 Nxd7 36. Nxa6 Rc8 37. b5 Ne5 38. c7 Ne6 39. b6 Nxc7 40. Rxc7 1-0

[Event "Bremen-ch op"]
[Site "Bremen"]
[Date "2018.03.28"]
[Round "6"]
[White "Hattenhauer, Klaus"]
[Black "Buhrdorf, Axel"]
[Result "1-0"]
[ECO "A48"]
[WhiteElo "1758"]
[BlackElo "1885"]
[PlyCount "53"]
[EventDate "2018.03.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 g6 2. Nf3 Bg7 3. Bf4 Nf6 4. h3 b6 5. e3 Bb7 6. Nbd2 d6 7. Bb5+ Nbd7 8. 0-0 a6 9. Ba4 0-0 10. c4 c5 11. Rc1 Rc8 12. Re1 Nh5 13. Bh2 f5 14. Ng5 e5 15. Ne6 Qe7 16. Bxd7 Qxd7 17. Nxf8 Rxf8 18. dxe5 dxe5 19. Nf3 Qe7 20. Rc2 g5 21. Nxe5 Bxe5 22. Qxh5 Bxh2+ 23. Kxh2 Qe4 24. Qxg5+ Kf7 25. Rd2 Bc6 26. Rd6 Qe5+ 27. Qf4 1-0

[Event "Bremen-ch op"]
[Site "Bremen"]
[Date "2018.03.27"]
[Round "5"]
[White "Wemssen, Lothar"]
[Black "Hattenhauer, Klaus"]
[Result "0-1"]
[ECO "D37"]
[WhiteElo "1950"]
[BlackElo "1758"]
[PlyCount "160"]
[EventDate "2018.03.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Nc3 Be7 5. Bf4 0-0 6. e3 a6 7. h3 c5 8. cxd5 cxd4 9. exd4 Nxd5 10. Bd2 Nc6 11. Rc1 Bf6 12. Be3 Nxe3 13. fxe3 Bh4+ 14. Ke2 Bf6 15. Ne4 Qd5 16. Nxf6+ gxf6 17. b3 Rd8 18. Qe1 Qe4 19. Kf2 e5 20. dxe5 Nxe5 21. Nxe5 fxe5 22. Be2 Be6 23. Rf1 Qg6 24. Qb4 Kh8 25. Bf3 Rg8 26. Qxb7 Rad8 27. Qe4 Qxe4 28. Bxe4 Rd2+ 29. Ke1 Rxa2 30. Rb1 Rg3 31. Bf3 f5 32. Rf2 Ra3 33. Rfb2 e4 34. Kf2 Rg8 35. Bd1 Rc8 36. Ke2 Rc3 37. Kd2 Rd3+ 38. Ke2 Bf7 39. Kf2 Kg7 40. Be2 Rc3 41. Bd1 Kf6 42. Bc2 Kg5 43. g3 Be8 44. Rd1 Bb5 45. Rd5 Bd3 46. Bd1 Rc1 47. Rd2 Raa1 48. Ke1 Rcb1 49. g4 Rxb3 50. Rxf5+ Kg6 51. h4 Bb5 52. Kf2 Rd3 53. Rxd3 Bxd3 54. Rg5+ Kf6 55. Bb3 Rf1+ 56. Kg2 Rf3 57. Rh5 Rxe3 58. Rxh7 Re2+ 59. Kg3 Re1 60. Kf4 Rf1+ 61. Ke3 Rf3+ 62. Kd4 Kg6 63. Rh8 Bb1 64. Be6 e3 65. h5+ Kg7 66. Rg8+ Kh7 67. Rb8 e2 68. Rxb1 Rf1 69. Bc4 Rd1+ 70. Kc5 e1Q 71. Bd3+ Kh6 72. Rxd1 Qxd1 73. Bxa6 Qxg4 74. Bc4 Qxh5+ 75. Bd5 Qe5 76. Kc4 Kg5 77. Kc5 Kf4 78. Kc4 Ke3 79. Kc5 Qe7+ 80. Kc6 Kd4 0-1

[Event "Bremen-ch op"]
[Site "Bremen"]
[Date "2018.03.26"]
[Round "4"]
[White "Hattenhauer, Klaus"]
[Black "Schubert, Karl Heinz"]
[Result "1-0"]
[ECO "B00"]
[WhiteElo "1758"]
[BlackElo "1371"]
[PlyCount "69"]
[EventDate "2018.03.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 b6 2. e4 Bb7 3. Bd3 e6 4. Nf3 Nf6 5. e5 Nd5 6. a3 d6 7. c4 Ne7 8. Nc3 Nbc6 9. 0-0 Qd7 10. Bf4 Ng6 11. Bg3 0-0-0 12. Re1 Be7 13. Nb5 h5 14. d5 exd5 15. e6 fxe6 16. Bxg6 dxc4 17. Qc2 Na5 18. Nbd4 e5 19. Bf5 exd4 20. Bxd7+ Rxd7 21. Nxd4 g5 22. f3 Bf6 23. Bf2 Rg7 24. Qf5+ Kb8 25. Qxf6 Rgg8 26. Re7 Rf8 27. Qxg5 c5 28. Nf5 Nc6 29. Rg7 Bc8 30. Nxd6 Ba6 31. Re1 Rd8 32. Nf7 Rd3 33. Nxh8 Rb3 34. Re8+ Bc8 35. Qf4+ 1-0

[Event "Bremen-ch op"]
[Site "Bremen"]
[Date "2018.03.25"]
[Round "2"]
[White "Borbely, Kurt"]
[Black "Hattenhauer, Klaus"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1390"]
[BlackElo "1758"]
[PlyCount "62"]
[EventDate "2018.03.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 e6 4. e3 Bd6 5. Bg3 0-0 6. Nbd2 c5 7. c3 Nc6 8. Bd3 cxd4 9. exd4 Re8 10. Ne5 Qc7 11. Ndf3 Ne4 12. Qc2 f5 13. Nd2 Nxe5 14. Bxe5 Bxe5 15. dxe5 Nxd2 16. Qxd2 Qxe5+ 17. Qe2 Qxe2+ 18. Bxe2 Bd7 19. 0-0 b5 20. b4 Rec8 21. Rac1 Rc7 22. Rfd1 a5 23. a3 axb4 24. axb4 Ra3 25. Rd3 Rb3 26. Bd1 Rxb4 27. cxb4 Rxc1 28. g3 Rb1 29. Rd4 Kf7 30. Kg2 e5 31. Rxd5 Bc6 0-1

[Event "Bremen-ch op"]
[Site "Bremen"]
[Date "2018.03.25"]
[Round "3"]
[White "Peters, Frank"]
[Black "Hattenhauer, Klaus"]
[Result "1-0"]
[ECO "A15"]
[WhiteElo "2075"]
[BlackElo "1758"]
[PlyCount "121"]
[EventDate "2018.03.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 e6 3. Bg2 d5 4. Qc2 Be7 5. Nf3 Nbd7 6. d4 dxc4 7. Nbd2 0-0 8. 0-0 a5 9. Nxc4 b5 10. Nce5 Ra6 11. Nc6 Qe8 12. Nxe7+ Qxe7 13. Qxc7 Nd5 14. Qc2 Bb7 15. Bg5 f6 16. Bd2 Rc8 17. Qd3 b4 18. e4 N5b6 19. Rfc1 Raa8 20. Rxc8+ Rxc8 21. Rc1 Qd8 22. Ne1 Rxc1 23. Bxc1 Qc8 24. Qc2 Qxc2 25. Nxc2 Kf7 26. b3 h6 27. Bd2 Ke8 28. a3 bxa3 29. Nxa3 a4 30. bxa4 Nxa4 31. Nc4 Ba6 32. Bf1 Kf8 33. Bb4+ Kg8 34. f3 Bb5 35. Kf2 Ba6 36. Be2 Bb5 37. Ke3 Ba6 38. f4 g6 39. Bd1 Bxc4 40. Bxa4 Nb6 41. Bc6 Kf7 42. Bc5 Nc8 43. d5 Ne7 44. Bxe7 Kxe7 45. Kd4 exd5 46. exd5 Bf1 47. Kc5 Bh3 48. d6+ Kd8 49. Be4 g5 50. fxg5 hxg5 51. Bc6 f5 52. Kd4 f4 53. gxf4 gxf4 54. Ke5 Bd7 55. Bf3 Bh3 56. Kxf4 Kd7 57. Ke5 Kd8 58. Bc6 Kc8 59. Kf6 Kd8 60. Kf7 Bg4 61. h4 1-0

[Event "Bremen-ch op"]
[Site "Bremen"]
[Date "2018.03.24"]
[Round "1"]
[White "Hattenhauer, Klaus"]
[Black "Hoeffer, David"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "1758"]
[BlackElo "2264"]
[PlyCount "110"]
[EventDate "2018.03.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 g6 3. e3 Bg7 4. Nd2 d6 5. h3 c5 6. Bb5+ Nbd7 7. c3 0-0 8. Ngf3 a6 9. Bd3 b5 10. Rc1 Bb7 11. 0-0 Qb6 12. Re1 Rad8 13. Qe2 Rfe8 14. e4 e5 15. dxc5 Nxc5 16. Be3 Qc6 17. c4 b4 18. Bg5 h6 19. Bh4 Ne6 20. Bc2 Rc8 21. Qe3 Nh5 22. Nh2 f5 23. f3 f4 24. Qd3 Kh7 25. Bf2 Bf6 26. Nhf1 Bd8 27. g4 fxg3 28. Nxg3 Nhf4 29. Qf1 Ng5 30. Ne2 Nfxh3+ 31. Kh1 Nxf2+ 32. Qxf2 Rf8 33. Qg2 Rc7 34. Ng1 Rcf7 35. Nh3 Nxh3 36. Qxh3 Rf4 37. Kg2 Bc8 38. Qh2 Rh4 39. Qg3 Rh3 40. Qf2 Bb6 41. Ba4 Qc7 42. c5 Bxc5 43. Rxc5 dxc5 44. Rc1 Qe7 45. Rxc5 Rd8 46. Rxc8 Rxc8 47. Kxh3 h5 48. Qb6 Rc1 49. f4 Rh1+ 50. Kg2 Qh4 51. f5 Rh2+ 52. Kf1 Qf4+ 53. Kg1 Qg3+ 54. Kf1 Qg2+ 55. Ke1 Qe2# 0-1

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2017.12.30"]
[Round "7"]
[White "Hattenhauer, Klaus"]
[Black "Wemssen, Lothar"]
[Result "0-1"]
[ECO "E61"]
[WhiteElo "1814"]
[BlackElo "1981"]
[PlyCount "120"]
[EventDate "2017.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. Nc3 0-0 5. Bg5 c5 6. dxc5 Na6 7. e3 Nxc5 8. Qc2 d6 9. e4 h6 10. Bd2 a5 11. Be2 b6 12. 0-0 Bb7 13. Bd3 Rc8 14. Rac1 e6 15. Rfe1 Nxd3 16. Qxd3 Qe7 17. Nb5 Rfd8 18. Bc3 e5 19. Nd2 Bf8 20. Qe3 Nd7 21. b3 Nc5 22. Bb2 Qh4 23. g3 Qh3 24. Nc3 Be7 25. f4 g5 26. Nd5 Bxd5 27. exd5 gxf4 28. gxf4 Qxe3+ 29. Rxe3 Kh7 30. Rf1 Rg8+ 31. Kh1 f6 32. Ne4 Nxe4 33. Rxe4 Rg4 34. Re2 Rcg8 35. fxe5 dxe5 36. h3 Rg3 37. Kh2 Bc5 38. d6 Bg1+ 39. Rxg1 Rxg1 40. Rd2 R1g7 41. a3 Rd7 42. b4 axb4 43. axb4 Rc8 44. c5 bxc5 45. bxc5 Rxc5 46. Ba3 Rc3 47. Bb4 Rc6 48. Kg3 Kg6 49. Rd3 Kf5 50. Rf3+ Ke6 51. Ba3 Rcxd6 52. Bxd6 Rxd6 53. Kg4 Rd4+ 54. Kh5 f5 55. h4 Rg4 56. Ra3 e4 57. Ra6+ Ke5 58. Rxh6 e3 59. Rh8 Re4 60. Kg5 e2 0-1

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2017.12.29"]
[Round "5"]
[White "Hattenhauer, Klaus"]
[Black "Hoehn, Lennart"]
[Result "1-0"]
[ECO "D91"]
[WhiteElo "1814"]
[PlyCount "71"]
[EventDate "2017.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 d5 5. Bg5 c6 6. e3 0-0 7. Be2 h6 8. Bf4 Nbd7 9. h3 Re8 10. 0-0 b6 11. Rc1 e6 12. cxd5 exd5 13. Qa4 Bb7 14. Rfd1 Ne4 15. Nxe4 dxe4 16. Ne5 Nxe5 17. dxe5 Qe7 18. Qxe4 c5 19. Qa4 Qe6 20. Rd6 Qc8 21. Bb5 Bxe5 22. Bxe5 Rxe5 23. Rcd1 Qf5 24. Bc6 Bxc6 25. Qxc6 Rae8 26. Rd7 Qc2 27. Rd8 Kg7 28. R1d2 Qc1+ 29. Rd1 Qc2 30. R1d2 Qc1+ 31. Kh2 Rxd8 32. Rxd8 Qxb2 33. Qd6 g5 34. Qf8+ Kg6 35. Qg8+ Kf6 36. Rd6+ 1-0

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2017.12.29"]
[Round "6"]
[White "Schwenteck, Peter"]
[Black "Hattenhauer, Klaus"]
[Result "1-0"]
[ECO "E16"]
[WhiteElo "1804"]
[BlackElo "1814"]
[PlyCount "85"]
[EventDate "2017.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. g3 b6 5. Bg2 Bb7 6. Ne5 Be7 7. Qa4+ Kf8 8. 0-0 Qc8 9. Nc3 c5 10. Be3 Nbd7 11. Nxd7+ Nxd7 12. cxd5 cxd4 13. Bxd4 e5 14. Be3 h5 15. Rac1 Nc5 16. Qd1 Bf6 17. Ne4 Qg4 18. Nxc5 bxc5 19. Bxc5+ Kg8 20. e4 Qg6 21. Qa4 h4 22. Rc3 hxg3 23. Rxg3 Qh5 24. Rh3 Bh4 25. Qb5 Bc8 26. Rd3 Bf6 27. Re1 Qxh2+ 28. Kf1 Rh5 29. Bf3 Bh3+ 30. Ke2 Bh4 31. Bxh5 Bxf2 32. Bxf2 Qf4 33. Bf3 Rc8 34. Qb3 Bg4 35. Bxg4 Qxg4+ 36. Kd2 Qf4+ 37. Be3 Qxe4 38. Rc3 Rd8 39. Kc1 Qg2 40. Rc2 Qg3 41. Rg1 Qf3 42. Rxg7+ Kh8 43. Rh2+ 1-0

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2017.12.28"]
[Round "3"]
[White "Hattenhauer, Klaus"]
[Black "Gorzinski, Dariusz"]
[Result "1/2-1/2"]
[ECO "D13"]
[WhiteElo "1814"]
[BlackElo "2016"]
[PlyCount "155"]
[EventDate "2017.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Nf3 Nc6 5. Nc3 Nf6 6. Bf4 Qb6 7. Na4 Qa5+ 8. Bd2 Qc7 9. e3 Ne4 10. Nc3 Nxd2 11. Qxd2 e6 12. Rc1 a6 13. Bd3 Bd6 14. Bb1 Qe7 15. 0-0 f5 16. Qe2 Bd7 17. Nd2 0-0 18. f4 g5 19. fxg5 Qxg5 20. Rf3 Rf6 21. Rh3 Rh6 22. Nf3 Qg7 23. Rxh6 Qxh6 24. Qf2 Be8 25. Ne2 Bh5 26. Kh1 Bg4 27. Neg1 Nxd4 28. Nh4 Nc6 29. Rc3 Be5 30. Rb3 b5 31. h3 Bh5 32. Nhf3 Rc8 33. Nxe5 Nxe5 34. Qh4 Kf7 35. e4 dxe4 36. g4 Nf3 37. Nxf3 exf3 38. g5 Rc1+ 39. Kh2 Qg6 40. Qf4 Rc6 41. Rd3 e5 42. Rd7+ Ke8 43. Qd2 Qe6 44. Rxh7 e4 45. Qf4 Qd6 46. Qxd6 Rxd6 47. Rxh5 Rd2+ 48. Kg1 Rxb2 49. Bxe4 fxe4 50. g6 Rg2+ 51. Kf1 Rxg6 52. Re5+ Kd7 53. Rxe4 Rg2 54. a3 Rh2 55. h4 Kd6 56. Rf4 Ke5 57. Rxf3 Rxh4 58. Ke2 Rd4 59. Rf8 Rd6 60. Ke3 Rh6 61. Rf3 a5 62. Kd3 Rc6 63. Rh3 Rc5 64. Rh5+ Kd6 65. Rh6+ Kd5 66. Rh5+ Kc6 67. Rh6+ Kb7 68. Rh7+ Kb6 69. Rh6+ Rc6 70. Rh5 Rg6 71. Rh3 Rg5 72. Kc3 Kc5 73. Rf3 Rh5 74. Rg3 b4+ 75. axb4+ axb4+ 76. Kb3 Kb5 77. Rf3 Rc5 78. Rh3 1/2-1/2

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2017.12.28"]
[Round "4"]
[White "Stieglitz, Dirk"]
[Black "Hattenhauer, Klaus"]
[Result "1-0"]
[ECO "A36"]
[WhiteElo "2072"]
[BlackElo "1814"]
[PlyCount "83"]
[EventDate "2017.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]

1. c4 c5 2. g3 Nf6 3. Nc3 g6 4. Bg2 Bg7 5. e4 Nc6 6. Nge2 d6 7. 0-0 0-0 8. d3 Bd7 9. Rb1 a6 10. a3 Rb8 11. b4 cxb4 12. axb4 b5 13. cxb5 axb5 14. d4 Qc8 15. Qd3 Qa6 16. h3 h6 17. f4 e6 18. g4 Ne7 19. f5 exf5 20. exf5 Bc6 21. d5 Bd7 22. fxg6 fxg6 23. Nd4 Rbc8 24. Ne6 Bxe6 25. dxe6 Nxg4 26. Rxf8+ Kxf8 27. hxg4 Rxc3 28. Qf1+ Nf5 29. gxf5 Qb6+ 30. Kh1 Qd4 31. fxg6+ Bf6 32. Bxh6+ Ke7 33. Bg5 Rg3 34. Qxf6+ Qxf6 35. Bxf6+ Kxf6 36. Bc6 Kxe6 37. Rg1 Rh3+ 38. Kg2 Rh5 39. Kf2 Rh8 40. Bxb5 d5 41. Bd3 Kf6 42. g7 1-0

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2017.12.27"]
[Round "1"]
[White "Hattenhauer, Klaus"]
[Black "Mueer, Sebastian"]
[Result "0-1"]
[ECO "D94"]
[WhiteElo "1814"]
[BlackElo "2253"]
[PlyCount "60"]
[EventDate "2017.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. Nc3 0-0 5. e3 c5 6. Be2 cxd4 7. exd4 d5 8. 0-0 Nc6 9. Bf4 Bg4 10. h3 Bxf3 11. Bxf3 dxc4 12. Bxc6 bxc6 13. Qa4 Qxd4 14. Be3 Qh4 15. Qxc6 e6 16. Rfd1 Rfc8 17. Qa6 Nd5 18. g3 Qxh3 19. Rxd5 exd5 20. Nxd5 Kh8 21. Rc1 Qe6 22. Qxe6 fxe6 23. Nf4 Rc6 24. b3 cxb3 25. axb3 Rxc1+ 26. Bxc1 Rb8 27. Be3 a6 28. Nxe6 Rxb3 29. Nc5 Rb1+ 30. Kg2 a5 0-1

[Event "Bremen Silvester op"]
[Site "Bremen"]
[Date "2017.12.27"]
[Round "2"]
[White "Weidenhoefer, Max"]
[Black "Hattenhauer, Klaus"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1579"]
[BlackElo "1814"]
[PlyCount "118"]
[EventDate "2017.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Nf3 Bg4 5. d4 e6 6. Be2 Nf6 7. h3 Bh5 8. g4 Bg6 9. Ne5 c6 10. h4 Be4 11. f3 Bd5 12. Bd2 Qc7 13. Bf4 Bd6 14. Bh2 Nbd7 15. Nxd5 Nxd5 16. c4 Nxe5 17. Bxe5 Bxe5 18. dxe5 Nb4 19. f4 Rd8 20. Qb3 Qb6 21. Rd1 0-0 22. a3 Na6 23. Qxb6 axb6 24. 0-0 Nc5 25. g5 g6 26. h5 Ne4 27. Rxd8 Rxd8 28. Rd1 Rxd1+ 29. Bxd1 Nd2 30. Be2 gxh5 31. Kf2 Kg7 32. Ke3 Nb3 33. Bxh5 Na5 34. Kd4 c5+ 35. Kc3 Nc6 36. Kb3 Ne7 37. Ka4 Ng6 38. Bxg6 Kxg6 39. Kb5 Kf5 40. Kxb6 Kxf4 41. Kxb7 Kxg5 42. a4 h5 43. a5 h4 44. a6 h3 45. a7 h2 46. a8Q h1Q+ 47. Kb8 Qxa8+ 48. Kxa8 Kf5 49. Kb7 Kxe5 50. Kc6 Kd4 51. Kb5 f5 52. b4 cxb4 53. Kxb4 f4 54. c5 Kd5 55. Kb5 f3 56. c6 f2 57. c7 f1Q+ 58. Kb6 Qc4 59. Kb7 e5 0-1

[Event "Oberliga Nord W 0809"]
[Site "Germany"]
[Date "2009.03.15"]
[Round "8.8"]
[White "Hattenhauer, Klaus"]
[Black "Schoene, Armin"]
[Result "0-1"]
[ECO "E54"]
[BlackElo "2166"]
[PlyCount "104"]
[EventDate "2008.10.05"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]
[WhiteTeam "Bremen Nord"]
[BlackTeam "Bremer SG"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. Nf3 Nf6 2. d4 e6 3. c4 Bb4+ 4. Nc3 c5 5. e3 0-0 6. Bd3 d5 7. 0-0 cxd4 8. exd4 dxc4 9. Bxc4 Qc7 10. Qe2 Bxc3 11. bxc3 b6 12. Bb2 Bb7 13. Bd3 Nc6 14. Rac1 Rfd8 15. Bb1 Na5 16. Ne5 Rac8 17. Rfe1 Bd5 18. f4 Nc4 19. Ba1 g6 20. Bd3 b5 21. Rb1 Qa5 22. Rb4 Nh5 23. g3 Nxe5 24. fxe5 a6 25. a4 bxa4 26. Bxa6 Rb8 27. Reb1 Rxb4 28. Rxb4 Ra8 29. Bb7 Rb8 30. Rb5 Qd8 31. Bxd5 exd5 32. e6 Rxb5 33. exf7+ Kxf7 34. Qxb5 Qg5 35. Qf1+ Nf6 36. Bb2 Qe3+ 37. Qf2 Qxf2+ 38. Kxf2 Ne4+ 39. Ke3 Nd6 40. Kd3 Kf6 41. Bc1 Kf5 42. h3 h5 43. Kc2 Ne4 44. Kb2 Nxg3 45. Ka3 Ne2 46. Bd2 Ke4 47. Kxa4 Kd3 48. Be1 Nxc3+ 49. Kb3 Ne4 50. Kb2 Kxd4 51. Kc2 Ke3 52. Kd1 Nf2+ 0-1

