[Event "Mecklenburg VP Verbandsliga 2223"]
[Site "Mecklenburg VP"]
[Date "2023.05.07"]
[Round "9.8"]
[White "Joswig, Karlheinz"]
[Black "Ostrzinski, Jan"]
[Result "0-1"]
[ECO "E61"]
[BlackElo "1532"]
[PlyCount "122"]
[EventDate "2022.10.23"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]
[WhiteTeam "Mecklenburger Springer SC"]
[BlackTeam "Think Rochade"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. Nf3 Nf6 2. d4 g6 3. e3 Bg7 4. c4 d6 5. Nc3 0-0 6. Bd3 Nbd7 7. 0-0 e5 8. d5 Nc5 9. Bb1 a5 10. e4 Nh5 11. Ne2 Bg4 12. Ng3 Qf6 13. h3 Bxf3 14. Qxf3 Qxf3 15. gxf3 Nf4 16. Kh2 Ra6 17. Bc2 a4 18. Bd2 Rfa8 19. Rfb1 Ncd3 20. Bxd3 Nxd3 21. Kg2 Rb6 22. Bc3 c6 23. Ne2 cxd5 24. cxd5 Rc8 25. a3 Bf6 26. Nc1 Nf4+ 27. Kg3 h5 28. Bd2 g5 29. Kh2 Rc2 30. Be3 Rbxb2 31. Rxb2 Rxb2 32. Kg3 Kg7 33. Kh2 h4 34. Na2 Nd3 35. Kg2 Bd8 36. Nc3 b5 37. Nd1 Rb3 38. Ra2 Ne1+ 39. Kf1 Nxf3 40. Kg2 Kg6 41. Kxf3 f5 42. exf5+ Kxf5 43. Ke2 e4 44. f3 exf3+ 45. Kxf3 Rd3 46. Nf2 Rxd5 47. Rd2 Rxd2 48. Bxd2 d5 49. Bb4 Bf6 50. Nd3 Bd4 51. Nc1 Bb2 52. Nd3 Ba1 53. Nc5 d4 54. Nb7 Bc3 55. Nd6+ Ke5 56. Nxb5 Bxb4 57. axb4 d3 58. Ke3 g4 59. hxg4 h3 60. Kf2 d2 61. Nc3 a3 0-1

[Event "Mecklenburg VP Verbandsliga 2223"]
[Site "Mecklenburg VP"]
[Date "2023.04.23"]
[Round "8.8"]
[White "Ostrzinski, Jan"]
[Black "Pawlicz, Filip"]
[Result "1/2-1/2"]
[ECO "B34"]
[WhiteElo "1532"]
[BlackElo "1290"]
[PlyCount "93"]
[EventDate "2022.10.23"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]
[WhiteTeam "Think Rochade"]
[BlackTeam "Torgelow Droegeheide II"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. f3 0-0 8. Qd2 d5 9. exd5 Nxd5 10. Nxc6 bxc6 11. Nxd5 cxd5 12. c3 e5 13. Rd1 Bb7 14. Be2 f5 15. 0-0 f4 16. Bc5 Rf5 17. Bc4 Qc7 18. Bxd5+ Kh8 19. Bxb7 Qxb7 20. b4 e4 21. fxe4 Qxe4 22. Bd4 Re8 23. Bxg7+ Kxg7 24. Qd4+ Kh6 25. Qxe4 Rxe4 26. Rd4 Rxd4 27. cxd4 Kg7 28. Rc1 Rf7 29. Kf2 Rd7 30. Rd1 Kf6 31. Kf3 Kf5 32. d5 g5 33. h3 h5 34. b5 g4+ 35. Kf2 Ke5 36. Rd2 Kd6 37. Rd4 Rf7 38. a4 Rf6 39. hxg4 hxg4 40. g3 fxg3+ 41. Kxg3 Rg6 42. Rd2 Rg5 43. a5 Rxd5 44. Rb2 Kc7 45. Kxg4 Rd4+ 46. Kf5 Ra4 47. b6+ 1/2-1/2

[Event "Mecklenburg VP Verbandsliga 2223"]
[Site "Mecklenburg VP"]
[Date "2023.02.26"]
[Round "6.5"]
[White "Waschk, Armin"]
[Black "Ostrzinski, Jan"]
[Result "1-0"]
[ECO "A31"]
[WhiteElo "2130"]
[BlackElo "1532"]
[PlyCount "51"]
[EventDate "2022.10.23"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]
[WhiteTeam "Guestrow/Teterow"]
[BlackTeam "Think Rochade"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. Nf3 Nf6 2. e3 g6 3. c4 c5 4. Nc3 Bg7 5. d4 cxd4 6. exd4 0-0 7. b3 d5 8. Bb2 Nc6 9. Be2 e6 10. 0-0 Nh5 11. cxd5 exd5 12. Qd2 a6 13. Rac1 Re8 14. Rfe1 Bf5 15. Na4 Nf6 16. Ne5 Qd6 17. Nxc6 bxc6 18. Qc3 Re6 19. Nc5 Ne4 20. Nxe4 Bxe4 21. Bf1 c5 22. Qxc5 Qxc5 23. Rxc5 Bf8 24. Rcc1 Bb4 25. Red1 a5 26. f3 1-0

[Event "Mecklenburg VP Verbandsliga 2223"]
[Site "Mecklenburg VP"]
[Date "2023.01.15"]
[Round "5.6"]
[White "Schulz, Bruno Andreas"]
[Black "Ostrzinski, Jan"]
[Result "1-0"]
[ECO "E85"]
[BlackElo "1532"]
[PlyCount "87"]
[EventDate "2022.10.23"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]
[WhiteTeam "Makkabi Rostock"]
[BlackTeam "Think Rochade"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 Nbd7 7. Qd2 e5 8. d5 a6 9. Nge2 Nh5 10. g4 Nhf6 11. Ng3 Nb6 12. h4 Qd7 13. h5 Nxg4 14. Bxb6 Bh6 15. Qg2 Ne3 16. Bxe3 Bxe3 17. Nf5 Bf4 18. Qg1 Kh8 19. hxg6 fxg6 20. Qxg6 Qf7 21. Qxf7 Rxf7 22. Bh3 Bd7 23. Ke2 b5 24. Nh4 b4 25. Bxd7 bxc3 26. Be6 cxb2 27. Rab1 Rg7 28. Rxb2 Bg5 29. Nf5 Rg6 30. Rb7 Bd8 31. Nxd6 Rg2+ 32. Kf1 Rxa2 33. Nf7+ Kg7 34. Nxd8 Rxd8 35. Rxc7+ Kg6 36. Bf5+ Kg5 37. f4+ Kxf4 38. Rb7 Ra1+ 39. Kg2 Rg8+ 40. Kh2 Ra2+ 41. Kh3 Rg3+ 42. Kh4 Rf2 43. d6 Kf3 44. Rb3+ 1-0

[Event "Mecklenburg VP Verbandsliga 2223"]
[Site "Mecklenburg VP"]
[Date "2022.12.11"]
[Round "4.7"]
[White "Roeder, Phillip"]
[Black "Ostrzinski, Jan"]
[Result "1-0"]
[ECO "C34"]
[WhiteElo "2011"]
[BlackElo "1532"]
[PlyCount "101"]
[EventDate "2022.10.23"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]
[WhiteTeam "Wismar ASV Gruen-Weiss"]
[BlackTeam "Think Rochade"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. Nc3 Nf6 2. e4 e5 3. f4 d6 4. Nf3 exf4 5. d4 Nc6 6. Bc4 Bg4 7. Bxf4 Qe7 8. Bg5 h6 9. Nd5 Qxe4+ 10. Kf2 0-0-0 11. Nxf6 Qf5 12. Nxg4 hxg5 13. Ne3 Qf6 14. Nd5 Qf5 15. Qd3 Qxd3 16. Bxd3 g4 17. Bf5+ Kb8 18. Bxg4 g6 19. c3 f5 20. Bh3 Bh6 21. Rhe1 Rdf8 22. Ng1 g5 23. g3 g4 24. Bg2 Bg5 25. h4 Bh6 26. Ne2 Bd2 27. Red1 Bh6 28. Nef4 Rf7 29. Re1 Na5 30. Ng6 Rg8 31. Ndf4 c6 32. Bf1 b5 33. Re6 Bxf4 34. Nxf4 Kc7 35. d5 a6 36. Rae1 Rd8 37. Re7+ Rd7 38. Ne6+ Kb6 39. Rxf7 Rxf7 40. Nd8 Rf8 41. Nxc6 Nxc6 42. dxc6 Kxc6 43. Bg2+ Kc5 44. Re7 Rf6 45. Ke3 a5 46. Kf4 b4 47. h5 bxc3 48. bxc3 Kc4 49. Rc7+ Kb5 50. Kg5 Rf8 51. h6 1-0

[Event "Mecklenburg VP Verbandsliga 2223"]
[Site "Mecklenburg VP"]
[Date "2022.11.06"]
[Round "2.6"]
[White "Ostrzinski, Jan"]
[Black "Nour, Alaa"]
[Result "1/2-1/2"]
[ECO "C78"]
[WhiteElo "1532"]
[BlackElo "1774"]
[PlyCount "91"]
[EventDate "2022.10.23"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]
[WhiteTeam "Think Rochade"]
[BlackTeam "Rostock SSC 07"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 b5 6. Bb3 Bc5 7. d3 d6 8. h3 Na5 9. Nc3 Nxb3 10. axb3 c6 11. d4 exd4 12. Nxd4 Qc7 13. Bg5 h6 14. Bh4 Nd7 15. Nf5 g5 16. Bg3 Ne5 17. Ne2 h5 18. h4 f6 19. Ned4 a5 20. c3 Kf7 21. b4 Bb6 22. hxg5 Bxf5 23. Nxf5 d5 24. gxf6 Rag8 25. bxa5 Ba7 26. exd5 h4 27. Bxe5 Qxe5 28. Qf3 Rg3 29. Nxg3 hxg3 30. Rae1 gxf2+ 31. Rxf2 Qh2+ 32. Kf1 Qh1+ 33. Ke2 Re8+ 34. Kd3 Rxe1 35. Re2 Rd1+ 36. Rd2 Re1 37. Kc2 Ra1 38. dxc6 Qb1+ 39. Kb3 Qa2+ 40. Kc2 Qb1+ 41. Kb3 Qa2+ 42. Kc2 Qa4+ 43. Kd3 Qc4+ 44. Kc2 Qa4+ 45. Kd3 Qc4+ 46. Kc2 1/2-1/2

[Event "Mecklenburg VP Verbandsliga 2223"]
[Site "Mecklenburg VP"]
[Date "2022.10.23"]
[Round "1.7"]
[White "Klepin, Wilfried"]
[Black "Ostrzinski, Jan"]
[Result "1-0"]
[ECO "A48"]
[WhiteElo "1907"]
[BlackElo "1532"]
[PlyCount "61"]
[EventDate "2022.10.23"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]
[WhiteTeam "Stralsund HSG"]
[BlackTeam "Think Rochade"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. d4 g6 2. Nf3 Bg7 3. Bf4 Nf6 4. e3 0-0 5. Bc4 d6 6. c3 Nbd7 7. h3 Nh5 8. Bh2 Nb6 9. Bb3 d5 10. Nbd2 Nf6 11. Bc2 c6 12. b3 Nfd7 13. 0-0 Re8 14. Ne5 f6 15. Nxg6 e5 16. Nh4 e4 17. Qh5 Nf8 18. Nf5 Bxf5 19. Qxf5 Ng6 20. Rae1 Rf8 21. f3 exf3 22. Rxf3 Qd7 23. Qh5 Qf7 24. Rg3 f5 25. Rf1 Ne7 26. Qxf7+ Rxf7 27. Rgf3 Raf8 28. g4 fxg4 29. Bxh7+ Kxh7 30. Rxf7 Rxf7 31. Rxf7 1-0

[Event "Mecklenburg VP Verbandsliga 2122"]
[Site "Mecklenburg VP"]
[Date "2021.11.07"]
[Round "2.8"]
[White "Ostrzinski, Jan"]
[Black "Leddin, Mathias"]
[Result "1/2-1/2"]
[ECO "C79"]
[WhiteElo "1532"]
[BlackElo "1592"]
[PlyCount "108"]
[EventDate "2021.10.24"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]
[WhiteTeam "Think Rochade"]
[BlackTeam "Stralsund HSG"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 d6 6. d3 b5 7. Bb3 Na5 8. c3 Nxb3 9. Qxb3 Be6 10. Qc2 Be7 11. a4 0-0 12. d4 exd4 13. cxd4 c5 14. Be3 Rc8 15. dxc5 dxc5 16. Ng5 Ng4 17. Nxe6 Nxe3 18. fxe3 fxe6 19. Na3 Qb6 20. axb5 axb5 21. Qe2 c4 22. Nc2 Bc5 23. Rad1 Rxf1+ 24. Rxf1 Rf8 25. Rxf8+ Kxf8 26. Qf3+ Kg8 27. e5 Qd8 28. Kf2 Qd3 29. Qa8+ Kf7 30. Qf3+ Kg8 31. Qa8+ Kf7 32. Qf3+ Ke7 33. Qb7+ Qd7 34. Qxd7+ Kxd7 35. Kf3 Kc6 36. Ke4 b4 37. Nd4+ Kd7 38. Nf3 Bb6 39. Nd2 c3 40. bxc3 bxc3 41. Nb3 Kc6 42. Kd3 Kd5 43. Nc1 Kxe5 44. Kxc3 Bxe3 45. Ne2 Ke4 46. Ng3+ Kd5 47. Kd3 Bf4 48. Nf1 e5 49. g3 Bg5 50. h4 Be7 51. Ne3+ Ke6 52. Ke4 Bc5 53. Nf1 Bd4 54. g4 Bf2 1/2-1/2

[Event "Mecklenburg VP Verbandsliga 2021"]
[Site "Mecklenburg VP"]
[Date "2020.10.18"]
[Round "2.6"]
[White "Ostrzinski, Jan"]
[Black "Kiel, Bernd"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1532"]
[BlackElo "1989"]
[PlyCount "120"]
[EventDate "2020.09.27"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]
[WhiteTeam "Think Rochade"]
[BlackTeam "Guestrow/Teterow"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 d5 2. exd5 Nf6 3. Nf3 Bg4 4. h3 Bh5 5. Bb5+ Nbd7 6. 0-0 Nxd5 7. Nc3 Nxc3 8. dxc3 c6 9. Be2 e6 10. Ne5 Bxe2 11. Qxe2 Bd6 12. Nxd7 Qxd7 13. Rd1 Qc7 14. Be3 0-0 15. Rd3 Rad8 16. Rad1 b6 17. Bg5 Be7 18. Bxe7 Qxe7 19. Qd2 Rxd3 20. Qxd3 Qc5 21. Qa6 Qe7 22. Qd3 Qg5 23. Qd7 Qf5 24. Qd3 Qa5 25. a3 Qd5 26. c4 Qe5 27. Qd4 Qe2 28. Qd3 Qe5 29. Qd4 Qh5 30. Rd2 g6 31. Qd7 Qe5 32. Qd4 Qe1+ 33. Kh2 Rc8 34. Rd1 Qe2 35. Rd2 Qh5 36. Qd7 Qe5+ 37. g3 Rc7 38. Qd6 Qxd6 39. Rxd6 c5 40. f4 Kf8 41. Kg2 Ke7 42. Rd3 Rd7 43. Kf3 Rxd3+ 44. cxd3 Kd6 45. Ke4 f5+ 46. Ke3 e5 47. b3 Ke6 48. g4 fxg4 49. hxg4 h5 50. f5+ gxf5 51. gxh5 Kf6 52. d4 exd4+ 53. Kf4 d3 54. Ke3 Kg5 55. Kxd3 Kxh5 56. b4 Kg4 57. bxc5 bxc5 58. a4 a5 59. Ke3 Kg3 60. Kd3 Kf3 0-1

[Event "Rostock SSC op 18th"]
[Site "Rostock"]
[Date "2019.08.11"]
[Round "7"]
[White "Ostrzinski, Jan"]
[Black "Fromm, Johannes"]
[Result "1-0"]
[ECO "B70"]
[WhiteElo "1473"]
[BlackElo "1676"]
[PlyCount "127"]
[EventDate "2019.08.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Bc4 Bg7 7. 0-0 a6 8. Be3 b5 9. Bb3 Bb7 10. f3 Nbd7 11. Nde2 Rc8 12. Nd5 0-0 13. a4 Bc6 14. a5 Nxd5 15. exd5 Bb7 16. Bd4 Nf6 17. c3 Re8 18. Bb6 Qd7 19. Qd3 e5 20. dxe6 fxe6 21. Rfe1 Nd5 22. Nd4 Nf4 23. Qe3 Be5 24. Rad1 Re7 25. g3 Nd5 26. Qd2 Kh8 27. f4 Bg7 28. Nxe6 Nxb6 29. axb6 Qc6 30. Bd5 Qxb6+ 31. Kg2 Bf6 32. Bxb7 Qxb7+ 33. Qd5 Qxd5+ 34. Rxd5 Rce8 35. Rxd6 Kg8 36. g4 a5 37. f5 b4 38. cxb4 axb4 39. b3 Bc3 40. Red1 h6 41. Rd8 Kf7 42. Rxe8 Rxe8 43. Rd8 Rxd8 44. Nxd8+ Kf6 45. fxg6 Kxg6 46. Ne6 Kf6 47. Nc5 Ke5 48. Kf3 Kd4 49. Na6 Kd3 50. h4 Bd4 51. Nxb4+ Kc3 52. Nc6 Bf6 53. h5 Kxb3 54. Kf4 Kc4 55. Kf5 Bg5 56. Ne5+ Kd5 57. Nf7 Bd2 58. Kg6 Ke6 59. Nxh6 Ke7 60. Nf5+ Kf8 61. h6 Kg8 62. h7+ Kh8 63. Nd6 Bh6 64. Nf7# 1-0

[Event "Rostock SSC op 18th"]
[Site "Rostock"]
[Date "2019.08.10"]
[Round "6"]
[White "Tovmasyan, Minas"]
[Black "Ostrzinski, Jan"]
[Result "1-0"]
[ECO "E87"]
[WhiteElo "1594"]
[BlackElo "1473"]
[PlyCount "87"]
[EventDate "2019.08.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 e5 7. d5 Nbd7 8. Qd2 b6 9. Nh3 Nc5 10. Nf2 Nfd7 11. b4 Na6 12. Nd3 f5 13. Be2 f4 14. Bf2 Nf6 15. Rc1 Nh5 16. c5 Nb8 17. cxd6 cxd6 18. Nb5 a5 19. Nc7 Bb7 20. Ne6 Qe8 21. Nxf8 Bxf8 22. Bxb6 axb4 23. Nxb4 Na6 24. Nxa6 Bxa6 25. 0-0 Qe7 26. Bxa6 Rxa6 27. Bf2 Qg5 28. Rc2 Ra3 29. Rc3 Ra8 30. Ra1 Nf6 31. a4 h5 32. Qe1 Qh6 33. h4 g5 34. hxg5 Qxg5 35. Rc7 Nh7 36. a5 Qg6 37. Bh4 Ng5 38. Bxg5 Qxg5 39. a6 Qd8 40. Qc3 h4 41. Kh2 Qg5 42. Qe1 Qd8 43. Rb7 Qc8 44. Qxh4 1-0

[Event "Rostock SSC op 18th"]
[Site "Rostock"]
[Date "2019.08.09"]
[Round "5"]
[White "Onasch, Gunnar"]
[Black "Ostrzinski, Jan"]
[Result "0-1"]
[ECO "D15"]
[WhiteElo "1885"]
[BlackElo "1473"]
[PlyCount "66"]
[EventDate "2019.08.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 Bf5 5. Nh4 Bg6 6. Nxg6 hxg6 7. Qb3 Qd7 8. e3 e6 9. Bd2 dxc4 10. Bxc4 Nd5 11. 0-0 Bd6 12. g3 Na6 13. Rfd1 Ke7 14. e4 Nxc3 15. Bxc3 Rad8 16. e5 Bb8 17. Bxa6 bxa6 18. Qa3+ Ke8 19. Qxa6 f6 20. Qe2 Kf7 21. Kg2 Qd5+ 22. f3 Rh5 23. Rd2 Rdh8 24. Rh1 g5 25. Qe4 Qc4 26. Rc2 f5 27. Be1 Qxa2 28. Qxc6 Qb3 29. g4 fxg4 30. Rc3 Qxb2+ 31. Kg3 Rh3+ 32. Kxg4 Qg2+ 33. Bg3 R3h4+ 0-1

[Event "Rostock SSC op 18th"]
[Site "Rostock"]
[Date "2019.08.09"]
[Round "4"]
[White "Ostrzinski, Jan"]
[Black "Loesche, Marian"]
[Result "1/2-1/2"]
[ECO "B05"]
[WhiteElo "1473"]
[BlackElo "1733"]
[PlyCount "104"]
[EventDate "2019.08.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. Be2 Nc6 6. c4 Nb6 7. exd6 cxd6 8. d5 Bxf3 9. Bxf3 Ne5 10. b3 g6 11. a4 Bg7 12. Ra2 0-0 13. 0-0 Nxf3+ 14. Qxf3 Nd7 15. Bb2 Bxb2 16. Rxb2 Ne5 17. Qe2 Qb6 18. Kh1 Rac8 19. f4 Nd7 20. Qxe7 Nc5 21. f5 Rce8 22. Qh4 Re5 23. fxg6 hxg6 24. Nc3 Rfe8 25. b4 Nd3 26. c5 dxc5 27. Rbb1 cxb4 28. h3 Qc5 29. Nb5 a6 30. d6 Qc6 31. Nc7 Re2 32. Qg4 R2e4 33. Qf3 Ne5 34. Qxe4 Qxe4 35. Nxe8 Nd7 36. Rfe1 Qh4 37. Re7 Nc5 38. Rf1 f5 39. Rfe1 b3 40. Rb1 Qxa4 41. Rc7 b6 42. Nf6+ Kf8 43. Re1 b2 44. d7 Nxd7 45. Nxd7+ Kg8 46. Nxb6 Qb5 47. Nd5 Kf8 48. Nf6 a5 49. Nh7+ Kg8 50. Nf6+ Kf8 51. Nh7+ Kg8 52. Nf6+ Kf8 1/2-1/2

[Event "Rostock SSC op 18th"]
[Site "Rostock"]
[Date "2019.08.08"]
[Round "3"]
[White "Ostrzinski, Jan"]
[Black "Manthe, Joern Horst"]
[Result "1-0"]
[ECO "C44"]
[WhiteElo "1473"]
[PlyCount "55"]
[EventDate "2019.08.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 d5 4. Nxe5 dxe4 5. Bb5 Nge7 6. Nxc6 bxc6 7. Bc4 Nd5 8. 0-0 h6 9. Re1 Qf6 10. Rxe4+ Be7 11. Qh5 Bf5 12. Bxd5 cxd5 13. Rf4 g6 14. Qf3 c6 15. Nc3 0-0 16. g4 Qg5 17. Rxf5 Qh4 18. Rf4 Bd6 19. Qg3 Qxg3+ 20. hxg3 Bxf4 21. Bxf4 g5 22. Bd6 Rfe8 23. f4 Re6 24. Be5 f6 25. f5 Re7 26. Bxf6 Re4 27. Nxe4 dxe4 28. Re1 1-0

[Event "Rostock SSC op 18th"]
[Site "Rostock"]
[Date "2019.08.07"]
[Round "2"]
[White "Kallweit, Paul"]
[Black "Ostrzinski, Jan"]
[Result "1-0"]
[ECO "D12"]
[WhiteElo "1819"]
[BlackElo "1473"]
[PlyCount "103"]
[EventDate "2019.08.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 Bf5 5. e3 Ne4 6. Qb3 b6 7. cxd5 Nxc3 8. bxc3 Qxd5 9. Bc4 Qd6 10. Bxf7+ Kd8 11. Ba3 c5 12. dxc5 Qf6 13. Rd1+ Kc7 14. cxb6+ axb6 15. Bd5 Ra7 16. Nd4 Bd7 17. Ne6+ Bxe6 18. Bxe6 Rxa3 19. Qxa3 Qxe6 20. Qa7+ Kc8 21. 0-0 g6 22. Rb1 Nd7 23. a4 Qc6 24. Rfd1 Bg7 25. a5 b5 26. c4 b4 27. Rxb4 Be5 28. Rb5 Bb8 29. Qd4 Rd8 30. Rb6 Qc7 31. Qg4 Qxh2+ 32. Kf1 Qc7 33. Qe6 Qa7 34. Rc6+ Bc7 35. Rd5 Qb7 36. Rb5 Qa7 37. Rbc5 Re8 38. Rxc7+ Qxc7 39. Rxc7+ Kxc7 40. Ke2 Ra8 41. Qd5 Ra6 42. Qb5 Rc6 43. a6 Rb6 44. Qa5 Kb8 45. Kf3 Ka7 46. c5 Rf6+ 47. Ke2 Rc6 48. Qb5 Rc7 49. Qa5 Rxc5 50. Qd8 Nb6 51. Qxe7+ Kxa6 52. Qxc5 1-0

[Event "Rostock SSC op 18th"]
[Site "Rostock"]
[Date "2019.08.07"]
[Round "1"]
[White "Ostrzinski, Jan"]
[Black "Hodl, Ingolf"]
[Result "0-1"]
[ECO "C47"]
[WhiteElo "1473"]
[BlackElo "1920"]
[PlyCount "44"]
[EventDate "2019.08.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. d4 exd4 5. Nxd4 Bb4 6. Nxc6 bxc6 7. Bg5 h6 8. Bxf6 Qxf6 9. Qd2 0-0 10. a3 Bxc3 11. bxc3 Re8 12. f3 d5 13. Bd3 dxe4 14. Bxe4 Ba6 15. Qd4 Qe7 16. Kf2 Rad8 17. Qxa7 Rd2+ 18. Kg1 f5 19. h3 fxe4 20. Qxa6 exf3 21. Qc4+ Kh8 22. Qf4 Rxg2+ 0-1

[Event "Mecklenburg VP-ch op"]
[Site "Greifswald"]
[Date "2019.04.15"]
[Round "7.6"]
[White "Ostrzinski, Jan"]
[Black "Bress, Amy Charlize"]
[Result "1/2-1/2"]
[ECO "B21"]
[BlackElo "1432"]
[PlyCount "103"]
[EventDate "2019.04.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 a6 5. Nf3 Nc6 6. Bf4 d6 7. Bc4 Nf6 8. 0-0 b5 9. Bb3 Bb7 10. e5 dxe5 11. Bxe5 Nxe5 12. Nxe5 e6 13. Qe2 Be7 14. Nxb5 0-0 15. Nc3 Bd6 16. Rfd1 Qe7 17. Rd2 Rfd8 18. Rad1 Bc7 19. Re1 Rxd2 20. Qxd2 Rd8 21. Qe2 Bxe5 22. Qxe5 h6 23. f3 Qd6 24. Qxd6 Rxd6 25. Kf2 Rd2+ 26. Re2 Rxe2+ 27. Kxe2 Kf8 28. Ke3 Ke7 29. Kd4 Kd6 30. Bc2 Nd7 31. Ne4+ Bxe4 32. Bxe4 Nc5 33. b4 Nxe4 34. fxe4 e5+ 35. Kc4 Kc6 36. a4 f6 37. g4 g6 38. b5+ axb5+ 39. axb5+ Kb6 40. Kd5 Kxb5 41. Ke6 Kc5 42. Kxf6 Kd4 43. Kxg6 Kxe4 44. Kxh6 Kf4 45. g5 e4 46. g6 e3 47. g7 e2 48. g8Q e1Q 49. Qg5+ Kf3 50. h4 Qe6+ 51. Qg6 Qe5 52. Qg5 1/2-1/2

[Event "Mecklenburg VP-ch op"]
[Site "Greifswald"]
[Date "2019.04.15"]
[Round "5.4"]
[White "Ostrzinski, Jan"]
[Black "Schmidt, Paul1111"]
[Result "0-1"]
[ECO "B87"]
[BlackElo "1926"]
[PlyCount "50"]
[EventDate "2019.04.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[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. Bc4 e6 7. 0-0 b5 8. Bb3 b4 9. Nd5 exd5 10. exd5 Be7 11. Qe1 a5 12. Ba4+ Kf8 13. Nc6 Nxc6 14. Bxc6 Ba6 15. a3 Rc8 16. axb4 Bxf1 17. Qxf1 axb4 18. Qa6 Nd7 19. Be3 Nc5 20. Qa7 f6 21. c3 b3 22. Ra5 Kf7 23. Bxc5 dxc5 24. Qd7 Qxd7 25. Bxd7 Ra8 0-1

[Event "Mecklenburg VP-ch op"]
[Site "Greifswald"]
[Date "2019.04.15"]
[Round "6.5"]
[White "Wellssow, Keoki"]
[Black "Ostrzinski, Jan"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "1523"]
[PlyCount "97"]
[EventDate "2019.04.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Nf6 3. e3 e6 4. c3 c5 5. Nd2 b6 6. Ngf3 Be7 7. Ne5 a5 8. Bb5+ Bd7 9. Bxd7+ Nfxd7 10. Qg4 g5 11. Qh5 Nxe5 12. Bxe5 Bf6 13. Nf3 Bxe5 14. Nxe5 Qf6 15. h4 Nd7 16. hxg5 Qg7 17. Ng4 Ke7 18. 0-0-0 f6 19. Nxf6 Nxf6 20. gxf6+ Qxf6 21. Qh4 Rag8 22. g4 c4 23. Qxf6+ Kxf6 24. Rh4 a4 25. a3 b5 26. f4 Kg6 27. Rdh1 h6 28. Rh5 Rg7 29. f5+ exf5 30. gxf5+ Kf6 31. Rxh6+ Rxh6 32. Rxh6+ Kxf5 33. Rb6 Rg1+ 34. Kc2 Ke4 35. Rxb5 Rg2+ 36. Kb1 Rg1+ 37. Ka2 Rg5 38. Ra5 Kxe3 39. Rxa4 Rg6 40. Ra8 Rb6 41. Kb1 Kd3 42. a4 Rf6 43. a5 Rf1+ 44. Ka2 Rf6 45. Rb8 Rd6 46. Ka3 Ke4 47. Kb4 Rd7 48. a6 Rd6 49. a7 1-0

[Event "Mecklenburg VP-ch op"]
[Site "Greifswald"]
[Date "2019.04.14"]
[Round "4.5"]
[White "Bohndorf, Jonas"]
[Black "Ostrzinski, Jan"]
[Result "0-1"]
[ECO "B34"]
[PlyCount "66"]
[EventDate "2019.04.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 d6 7. Bb5 Bd7 8. f3 Nf6 9. Qd2 a6 10. Ba4 b5 11. Bb3 Na5 12. 0-0-0 Nxb3+ 13. Nxb3 0-0 14. Bh6 b4 15. Ne2 a5 16. Ng3 a4 17. Na1 Be6 18. h4 b3 19. a3 bxc2 20. Rde1 Qa5 21. Qe3 Rab8 22. h5 Qe5 23. Kd2 Qxg3 24. Reg1 Nxh5 25. Nxc2 Rxb2 26. Kd1 Rb1+ 27. Kd2 Bxh6 28. Qxh6 Qf2+ 29. Kd3 Rxg1 30. Rxh5 gxh5 31. Qg5+ Kh8 32. Qh6 Rc8 33. e5 Bf5# 0-1

[Event "Mecklenburg VP-ch op"]
[Site "Greifswald"]
[Date "2019.04.14"]
[Round "3.2"]
[White "Ostrzinski, Jan"]
[Black "Grossmann, Piet"]
[Result "0-1"]
[ECO "C01"]
[BlackElo "1752"]
[PlyCount "120"]
[EventDate "2019.04.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 Bd6 5. Nf3 Ne7 6. 0-0 0-0 7. c3 Bf5 8. Bg5 f6 9. Bh4 c6 10. Bg3 Re8 11. Bxd6 Qxd6 12. Nh4 Bxd3 13. Qxd3 Nd7 14. Nd2 Nf8 15. Ndf3 Nfg6 16. g3 Qd7 17. Nxg6 Nxg6 18. Rae1 Qg4 19. Kh1 Kf7 20. Rxe8 Rxe8 21. Re1 Rxe1+ 22. Nxe1 Qe6 23. Ng2 Ne7 24. Ne3 g6 25. Kg1 Nc8 26. f4 Qe4 27. Qxe4 dxe4 28. f5 Nd6 29. g4 gxf5 30. Nxf5 Nxf5 31. gxf5 Ke7 32. Kf2 Kd6 33. Ke3 Kd5 34. b3 b5 35. Kd2 b4 36. Kc1 h5 37. Kd2 h4 38. Kc2 e3 39. Kd3 bxc3 40. Kxe3 c2 41. Kd2 Kxd4 42. Kxc2 Ke4 43. Kd2 Kxf5 44. Ke3 Kg4 45. Kf2 f5 46. Kg2 h3+ 47. Kf2 Kf4 48. b4 a6 49. a3 Ke4 50. Ke2 Kd4 51. Kf3 Ke5 52. Kg3 Ke4 53. Kf2 f4 54. Ke2 f3+ 55. Kf2 Kf4 56. Ke1 Ke3 57. Kf1 f2 58. a4 Kd3 59. Kxf2 Kc4 60. a5 Kxb4 0-1

[Event "Mecklenburg VP-ch op"]
[Site "Greifswald"]
[Date "2019.04.13"]
[Round "2.7"]
[White "Le, Tomab Linh"]
[Black "Ostrzinski, Jan"]
[Result "0-1"]
[ECO "B76"]
[PlyCount "104"]
[EventDate "2019.04.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Nb3 d6 7. Be3 Nf6 8. f3 0-0 9. Qd2 Nd7 10. 0-0-0 Nde5 11. Be2 Be6 12. h3 Nc4 13. Bxc4 Bxc4 14. f4 Bxb3 15. cxb3 Qa5 16. Kb1 Rac8 17. Nd5 Qxd2 18. Rxd2 b6 19. Rc2 e6 20. Rxc6 exd5 21. Rxd6 dxe4 22. Rd7 Ra8 23. Rc1 Rfd8 24. Rcc7 Rxd7 25. Rxd7 Kf8 26. g4 Ke8 27. Rc7 Bf8 28. g5 b5 29. Bxa7 Bd6 30. Rb7 Bxf4 31. Bf2 Rc8 32. a3 e3 33. Be1 e2 34. Rxb5 Rc1+ 35. Ka2 Rxe1 36. Rb4 Bd2 37. Re4+ Kf8 38. b4 Ra1+ 39. Kxa1 e1Q+ 40. Rxe1 Bxe1 41. b5 Ke7 42. Ka2 Kd6 43. b4 Kc7 44. Kb3 Kb6 45. Kc4 Bh4 46. a4 Bxg5 47. a5+ Kb7 48. Kd5 Bd2 49. Kc5 Be3+ 50. Kd6 f5 51. Kd5 f4 52. b6 f3 0-1

[Event "Mecklenburg VP-ch op"]
[Site "Greifswald"]
[Date "2019.04.13"]
[Round "1.7"]
[White "Ostrzinski, Jan"]
[Black "Wagner, Tino"]
[Result "1-0"]
[ECO "C50"]
[BlackElo "1476"]
[PlyCount "73"]
[EventDate "2019.04.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Be7 5. Bc4 Nf6 6. Nxc6 dxc6 7. Qxd8+ Bxd8 8. 0-0 0-0 9. Nc3 Be6 10. Bxe6 fxe6 11. Bg5 b5 12. f3 Be7 13. e5 Bc5+ 14. Kh1 Nd5 15. Ne2 Rf7 16. Rad1 Ne3 17. Bxe3 Bxe3 18. Nd4 Bxd4 19. Rxd4 c5 20. Rd3 Kf8 21. g3 Ke8 22. f4 c4 23. Rd4 Rd7 24. Rxd7 Kxd7 25. Rd1+ Ke7 26. Kg2 Rd8 27. Rxd8 Kxd8 28. Kf3 Ke7 29. Ke4 c5 30. g4 g6 31. h4 a5 32. f5 g5 33. hxg5 a4 34. b3 axb3 35. axb3 c3 36. Kd3 b4 37. Kc4 1-0

[Event "Mecklenburg VP-ch U25"]
[Site "Malchow"]
[Date "2014.02.04"]
[Round "6"]
[White "Ostrzinski, Jan"]
[Black "Beck, Jules"]
[Result "1-0"]
[ECO "C01"]
[WhiteElo "1284"]
[BlackElo "918"]
[PlyCount "41"]
[EventDate "2014.02.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 e6 2. Nf3 d5 3. exd5 exd5 4. d4 Nf6 5. Nc3 Bd6 6. Bg5 Be7 7. Bd3 Bg4 8. 0-0 Nc6 9. Be2 Bxf3 10. Bxf3 h6 11. Bxf6 Bxf6 12. Re1+ Ne7 13. Nxd5 c6 14. Nxf6+ gxf6 15. Re3 Qd6 16. Qe2 Kd8 17. Re1 Re8 18. Bh5 Kc8 19. Bxf7 Rd8 20. Rxe7 Qxd4 21. Qe6+ 1-0

[Event "Mecklenburg VP-ch U25"]
[Site "Malchow"]
[Date "2014.02.04"]
[Round "7"]
[White "Patzenhauer, Max"]
[Black "Ostrzinski, Jan"]
[Result "1-0"]
[ECO "D05"]
[WhiteElo "1895"]
[BlackElo "1284"]
[PlyCount "45"]
[EventDate "2014.02.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. e3 e6 4. Bd3 Bd6 5. Nbd2 0-0 6. Qe2 b6 7. e4 dxe4 8. Nxe4 Bb7 9. Nxd6 Qxd6 10. 0-0 Bxf3 11. Qxf3 Nc6 12. c3 Ne7 13. Bf4 Qd7 14. Rfe1 Ng6 15. Bg5 Nd5 16. Rad1 Qd6 17. g3 f6 18. Bc1 Rac8 19. Bc4 c6 20. Bb3 b5 21. h4 c5 22. Rxe6 Qd8 23. Qxd5 1-0

[Event "Mecklenburg VP-ch U25"]
[Site "Malchow"]
[Date "2014.02.03"]
[Round "3"]
[White "Finke, Adrian"]
[Black "Ostrzinski, Jan"]
[Result "0-1"]
[ECO "B30"]
[WhiteElo "1129"]
[BlackElo "1284"]
[PlyCount "120"]
[EventDate "2014.02.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Nf3 e6 4. Bb5 Nge7 5. d3 a6 6. Bxc6 Nxc6 7. Bf4 Be7 8. g3 0-0 9. 0-0 d6 10. Qd2 Nd4 11. Nxd4 cxd4 12. Ne2 e5 13. Nxd4 exf4 14. Qxf4 Bg5 15. Qf3 Qf6 16. Qxf6 Bxf6 17. c3 Be6 18. Nxe6 fxe6 19. d4 Rfe8 20. f4 d5 21. e5 Bd8 22. Rf2 Bc7 23. a3 b6 24. Rc1 b5 25. Kh1 Bb6 26. Kg1 a5 27. Rd2 Rac8 28. Rcc2 Rc7 29. Kf2 Rec8 30. Rd3 b4 31. axb4 axb4 32. Ke3 Ba5 33. Kd2 g6 34. h4 h6 35. g4 Rf7 36. Rf3 Rcf8 37. Ke3 bxc3 38. bxc3 g5 39. hxg5 hxg5 40. f5 exf5 41. gxf5 Rxf5 42. Rxf5 Rxf5 43. Kd3 Rf3+ 44. Kd2 Rf2+ 45. Kd3 Rxc2 46. Kxc2 g4 47. Kd2 g3 48. e6 Kf8 49. Ke2 Ke7 50. c4 dxc4 51. d5 Bb6 52. Kf3 c3 53. Kxg3 c2 54. d6+ Kxe6 55. d7 Kxd7 56. Kf3 c1Q 57. Ke2 Qe3+ 58. Kd1 Qf2 59. Kc1 Kc6 60. Kb1 Kc5 0-1

[Event "Mecklenburg VP-ch U25"]
[Site "Malchow"]
[Date "2014.02.03"]
[Round "4"]
[White "Ostrzinski, Jan"]
[Black "Fidorra, Thomas"]
[Result "0-1"]
[ECO "B45"]
[WhiteElo "1284"]
[BlackElo "1946"]
[PlyCount "78"]
[EventDate "2014.02.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 Qa5 7. Bxf6 gxf6 8. Ndb5 Bc5 9. Nd6+ Ke7 10. Nc4 Qc7 11. Qd2 a6 12. 0-0-0 b5 13. Ne3 Bxe3 14. Qxe3 d6 15. g3 Bb7 16. f4 Rac8 17. Nd5+ exd5 18. exd5+ Ne5 19. Qe2 Qc5 20. fxe5 fxe5 21. Bg2 b4 22. Rhf1 Qc4 23. Qxc4 Rxc4 24. Rf2 Rf8 25. Rdf1 f6 26. Rf3 Bxd5 27. R3f2 Bxg2 28. Rxg2 f5 29. Re2 Ke6 30. b3 Rc3 31. Kd2 d5 32. a3 Rfc8 33. axb4 Rxc2+ 34. Ke1 d4 35. Rff2 Rc1+ 36. Kd2 R8c2+ 37. Kd3 Rc3+ 38. Kd2 e4 39. Re1 R3c2# 0-1

[Event "Mecklenburg VP-ch U25"]
[Site "Malchow"]
[Date "2014.02.03"]
[Round "5"]
[White "Schulz, Armin"]
[Black "Ostrzinski, Jan"]
[Result "1/2-1/2"]
[ECO "B30"]
[WhiteElo "1414"]
[BlackElo "1284"]
[PlyCount "109"]
[EventDate "2014.02.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bc4 e6 4. d3 d5 5. exd5 exd5 6. Qe2+ Be7 7. Bb3 Nf6 8. Bg5 0-0 9. h3 Re8 10. 0-0 b5 11. c4 bxc4 12. dxc4 d4 13. Re1 Bb7 14. Ba4 Kf8 15. Nbd2 Nh5 16. Bxe7+ Rxe7 17. Qf1 Qc7 18. Re2 Rxe2 19. Qxe2 Nf4 20. Qf1 Nb4 21. b3 Bc6 22. Bxc6 Qxc6 23. g3 Ng6 24. Qg2 Re8 25. Kf1 Nd3 26. Ng5 Qxg2+ 27. Kxg2 h6 28. Ngf3 Re2 29. Rf1 Nge5 30. Nxe5 Rxe5 31. Kf3 f5 32. g4 fxg4+ 33. hxg4 g5 34. Ne4 Re6 35. Rd1 Ne5+ 36. Kg2 Nd7 37. f3 Rc6 38. Re1 Nf6 39. Nxf6 Rxf6 40. Re5 Rc6 41. Kf2 Kf7 42. Re2 Re6 43. a3 Rxe2+ 44. Kxe2 Ke6 45. Kd3 a5 46. b4 cxb4 47. axb4 axb4 48. Kxd4 Kd6 49. c5+ Kc6 50. Kc4 b3 51. Kxb3 Kxc5 52. Kc3 Kd5 53. Kd3 Ke5 54. Ke3 Kd5 55. Kd3 1/2-1/2

[Event "Mecklenburg VP-ch U25"]
[Site "Malchow"]
[Date "2014.02.01"]
[Round "2"]
[White "Ostrzinski, Jan"]
[Black "Sbach, Johann"]
[Result "1-0"]
[ECO "C10"]
[WhiteElo "1284"]
[BlackElo "963"]
[PlyCount "67"]
[EventDate "2014.02.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 e6 2. Nf3 d5 3. exd5 exd5 4. d4 Nf6 5. Nc3 Nc6 6. g3 Be7 7. Bg2 0-0 8. 0-0 Bg4 9. Qd2 Re8 10. Ne5 Bb4 11. Nxc6 bxc6 12. Qd3 a5 13. a3 Bxc3 14. Qxc3 Ne4 15. Qxc6 Rb8 16. Qa6 c6 17. f3 Ra8 18. Qxc6 Bd7 19. Qxd5 Nf6 20. Qc4 Rb8 21. a4 Be6 22. Qd3 Qc8 23. Qd2 Bc4 24. Rf2 Re7 25. b3 Bxb3 26. cxb3 Rxb3 27. Ba3 Ree3 28. Bc5 Nd5 29. Re2 Qe6 30. Rae1 Qe8 31. f4 Rxe2 32. Rxe2 Rb1+ 33. Kf2 Qxa4 34. Bxd5 1-0

[Event "Mecklenburg VP-ch U25"]
[Site "Malchow"]
[Date "2014.02.01"]
[Round "1"]
[White "Schubert, Matti"]
[Black "Ostrzinski, Jan"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "873"]
[BlackElo "1284"]
[PlyCount "56"]
[EventDate "2014.02.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 e6 4. d3 Nd4 5. Bf4 a6 6. Bc4 b5 7. Bxb5 axb5 8. Nce2 Nxe2 9. Qxe2 d5 10. Nf3 c4 11. 0-0 Bd6 12. Bg5 Ne7 13. d4 dxe4 14. Qxe4 Ra7 15. h3 Bb7 16. Qg4 Bxf3 17. Qxf3 0-0 18. Qe3 Qd7 19. Bf4 Bxf4 20. Qxf4 Nd5 21. Qe5 b4 22. c3 bxc3 23. bxc3 Nxc3 24. d5 Nxd5 25. Rab1 Rc7 26. a4 c3 27. Ra1 c2 28. Rfe1 Rfc8 0-1

[Event "Mecklenburg VP-ch U16"]
[Site "Malchow"]
[Date "2011.02.08"]
[Round "6.10"]
[White "Ostrzinski, Jan"]
[Black "Fechner, Robert"]
[Result "1/2-1/2"]
[ECO "C45"]
[WhiteElo "798"]
[BlackElo "1164"]
[PlyCount "97"]
[EventDate "2011.02.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Be3 Qf6 6. c3 Nh6 7. Be2 0-0 8. 0-0 b6 9. b4 Bd6 10. Bf3 Rb8 11. Nxc6 dxc6 12. Bd4 Qf4 13. g3 Qg5 14. e5 Bxe5 15. Bxc6 Bg4 16. Bf3 Bxd4 17. cxd4 Qh5 18. Bxg4 Nxg4 19. h4 Qf5 20. Nd2 Rfd8 21. Qf3 Nh6 22. Qc3 Qh3 23. Nf3 Qg4 24. Ne5 Qh3 25. Nf3 Rbc8 26. Ng5 Qd7 27. Nf3 Nf5 28. Rad1 Ne7 29. Ne5 Qd5 30. Qc4 Qxc4 31. Nxc4 Nd5 32. a3 g6 33. Rd3 c5 34. dxc5 bxc5 35. b5 Nb6 36. Nxb6 axb6 37. Rfd1 Rxd3 38. Rxd3 Ra8 39. Rd6 Rxa3 40. Rxb6 c4 41. Rc6 c3 42. b6 Rb3 43. Kg2 Kg7 44. f4 Rb2+ 45. Kh3 c2 46. Kg4 h5+ 47. Kh3 f5 48. Rc7+ Kh6 49. b7 1/2-1/2

[Event "Mecklenburg VP-ch U16"]
[Site "Malchow"]
[Date "2011.02.08"]
[Round "7.8"]
[White "Wulf, Constanze"]
[Black "Ostrzinski, Jan"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "1225"]
[BlackElo "798"]
[PlyCount "39"]
[EventDate "2011.02.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 e6 3. e3 Nf6 4. Nf3 Bd6 5. Ne5 0-0 6. Nd2 Nbd7 7. Bd3 Nb6 8. Qf3 Bxe5 9. dxe5 Nfd7 10. Qh3 g6 11. Bh6 Re8 12. Qg3 Nc5 13. Be2 Nba4 14. 0-0-0 c6 15. Qf4 Qb6 16. Nb3 Ne4 17. Rdf1 Qd8 18. f3 Nec5 19. Bg5 Qc7 20. Bf6 1-0

[Event "Mecklenburg VP-ch U16"]
[Site "Malchow"]
[Date "2011.02.07"]
[Round "4.9"]
[White "Eggert, Andre"]
[Black "Ostrzinski, Jan"]
[Result "1-0"]
[ECO "E51"]
[WhiteElo "1509"]
[BlackElo "798"]
[PlyCount "65"]
[EventDate "2011.02.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. c4 d5 2. e3 Nf6 3. Nf3 Nc6 4. d4 e6 5. Nc3 Bb4 6. Bd2 0-0 7. a3 Bxc3 8. Bxc3 Ne4 9. Qc2 b6 10. Bd3 Ng5 11. Qe2 Ba6 12. b3 Qf6 13. Nxg5 Qxg5 14. 0-0 Na5 15. Rab1 dxc4 16. bxc4 Nc6 17. Be4 Na5 18. Bxa5 bxa5 19. Bxa8 Rxa8 20. Qf3 Rd8 21. Qc6 Bc8 22. Qxc7 a6 23. Rb8 g6 24. Rxc8 Rxc8 25. Qxc8+ Kg7 26. Qc5 Qd8 27. Rb1 Qa8 28. Qe5+ Kh6 29. h3 Qc6 30. Qc5 Qa4 31. Rb7 Qd1+ 32. Kh2 Qd3 33. Rxf7 1-0

[Event "Mecklenburg VP-ch U16"]
[Site "Malchow"]
[Date "2011.02.07"]
[Round "5.10"]
[White "Ostrzinski, Jan"]
[Black "Schulz, Armin"]
[Result "0-1"]
[ECO "C45"]
[WhiteElo "798"]
[BlackElo "1291"]
[PlyCount "43"]
[EventDate "2011.02.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Qh4 5. Be3 Qxe4 6. Nc3 Qe7 7. Qf3 Nxd4 8. Qd1 Nf5 9. Qd3 Nxe3 10. fxe3 c6 11. 0-0-0 d5 12. Qd4 Qf6 13. Qa4 Bd7 14. Qb3 0-0-0 15. Nxd5 cxd5 16. Rxd5 Be6 17. Bc4 Rxd5 18. Bxd5 Bxd5 19. Qxd5 Qe6 20. Qb3 Qxb3 21. axb3 Bc5 22. Re1 0-1

[Event "Mecklenburg VP-ch U16"]
[Site "Malchow"]
[Date "2011.02.06"]
[Round "3.10"]
[White "Ostrzinski, Jan"]
[Black "Schuenemann, Anne"]
[Result "1-0"]
[ECO "B10"]
[WhiteElo "798"]
[BlackElo "1077"]
[PlyCount "103"]
[EventDate "2011.02.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c6 2. Nf3 d5 3. exd5 cxd5 4. c3 Bg4 5. h3 Bxf3 6. Qxf3 Nf6 7. d4 e6 8. Bg5 Be7 9. Bd3 Nc6 10. Nd2 Rc8 11. Nb3 a6 12. a3 0-0 13. 0-0 Re8 14. Nc5 Bxc5 15. dxc5 Ne5 16. Qe3 Nxd3 17. Qxd3 Rxc5 18. Qd4 Rc4 19. Qd3 e5 20. Bxf6 gxf6 21. Rfd1 Qb6 22. Qxd5 Rc5 23. Qd6 Rc6 24. Qd7 Rec8 25. Qg4+ Kf8 26. Qf5 Kg8 27. Rd3 Kh8 28. Rd7 R6c7 29. Rad1 Rxd7 30. Rxd7 Kg7 31. Qg4+ Kf8 32. Qh5 Qe6 33. Rxb7 Kg8 34. Qh4 Qd5 35. Rb6 Rc6 36. Qg4+ Kf8 37. Rb8+ Ke7 38. Rb7+ Kf8 39. Rb8+ Ke7 40. Qb4+ Kd7 41. Qb7+ Ke6 42. Rf8 Kf5 43. Qb4 Rc4 44. Qb6 Re4 45. Qxa6 Re1+ 46. Kh2 Qd2 47. Qc8+ Kg6 48. Rg8+ Kh6 49. Qf8+ Kh5 50. Qxf7+ Kh6 51. Qg7+ Kh5 52. Qg4+ 1-0

[Event "Mecklenburg VP-ch U16"]
[Site "Malchow"]
[Date "2011.02.05"]
[Round "2.10"]
[White "Moews, Fabian"]
[Black "Ostrzinski, Jan"]
[Result "1-0"]
[ECO "D20"]
[WhiteElo "1318"]
[BlackElo "798"]
[PlyCount "61"]
[EventDate "2011.02.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. e3 b5 4. a4 c6 5. axb5 cxb5 6. Qf3 Bb7 7. Qxb7 Nd7 8. Qxb5 Ngf6 9. Qxc4 e6 10. Qd3 Nd5 11. Bd2 Bb4 12. Bxb4 Nxb4 13. Qd2 a5 14. Bb5 0-0 15. Bxd7 Qxd7 16. Nc3 Qc6 17. f3 Qc4 18. Rd1 a4 19. Nge2 Qb3 20. 0-0 a3 21. bxa3 Rxa3 22. Rb1 Qc4 23. Rfc1 Nd3 24. Rc2 g6 25. Ra2 Rxa2 26. Qxa2 Qxa2 27. Nxa2 e5 28. Rb3 Ne1 29. Rc3 exd4 30. exd4 Rb8 31. Kf1 1-0

[Event "Mecklenburg VP-ch U16"]
[Site "Malchow"]
[Date "2011.02.05"]
[Round "1.10"]
[White "Ostrzinski, Jan"]
[Black "Giering, Nils"]
[Result "0-1"]
[ECO "C45"]
[WhiteElo "798"]
[BlackElo "1503"]
[PlyCount "70"]
[EventDate "2011.02.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Nxc6 dxc6 6. Qxd8+ Kxd8 7. Be3 Bxe3 8. fxe3 Nf6 9. Nc3 Re8 10. 0-0-0+ Bd7 11. Bc4 Nxe4 12. Nxe4 Rxe4 13. Bxf7 Rxe3 14. Bg8 h6 15. Bh7 Ke7 16. Rd3 Rxd3 17. Bxd3 Rf8 18. Re1+ Kd6 19. Rd1 Ke7 20. Re1+ Kd8 21. Re3 c5 22. Rg3 g5 23. Rf3 Rxf3 24. gxf3 Bc6 25. Be4 Bxe4 26. fxe4 Ke7 27. Kd2 Ke6 28. Kd3 Ke5 29. Ke3 g4 30. c3 h5 31. Kf2 h4 32. Kg2 Kxe4 33. h3 g3 34. c4 Kd3 35. b3 Kc3 0-1

[Event "Mecklenburg VP LL2 Ost 1011"]
[Site "Mecklenburg VP"]
[Date "2010.10.10"]
[Round "1.8"]
[White "Ostrzinski, Jan"]
[Black "Nickel, Udo"]
[Result "0-1"]
[ECO "C00"]
[WhiteElo "798"]
[BlackElo "1701"]
[PlyCount "100"]
[EventDate "2010.10.10"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Stralsund FHSG II"]
[BlackTeam "Waterkant Saal SV"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e6 2. Nf3 d5 3. Nc3 Nf6 4. d3 Bb4 5. Bd2 dxe4 6. dxe4 0-0 7. e5 Bxc3 8. Bxc3 Qxd1+ 9. Rxd1 Nd5 10. Bd3 Nxc3 11. bxc3 Nd7 12. 0-0 Nc5 13. Nd4 a6 14. Nb3 Na4 15. c4 Nc3 16. Ra1 b6 17. a4 Bb7 18. c5 Rfd8 19. a5 b5 20. Nd2 Na4 21. Ne4 Rd4 22. Ng5 Rg4 23. Bxh7+ Kh8 24. Be4 Rxe4 25. Nxe4 Bxe4 26. Rac1 Bd5 27. Rcd1 Nxc5 28. Rd4 Nd7 29. Rh4+ Kg8 30. Rh5 g6 31. Rg5 Kg7 32. Re1 Nc5 33. Rg3 Nb7 34. Ra1 c5 35. Rf3 Bxf3 36. gxf3 Rd8 37. f4 c4 38. c3 Rd3 39. Ra3 Rf3 40. Kg2 Rxf4 41. Kg3 Re4 42. f4 Re3+ 43. Kg4 Nc5 44. h4 Ne4 45. f5 exf5+ 46. Kf4 Rxc3 47. Ra2 Rh3 48. h5 Rxh5 49. Ke3 Rh3+ 50. Kd4 Rd3# 0-1

