[Event "Katowice POL-HUN 10th"]
[Site "Katowice"]
[Date "2023.09.09"]
[Round "2"]
[White "Bartel, Michal"]
[Black "Deren, Marcin"]
[Result "1-0"]
[ECO "B20"]
[WhiteElo "2252"]
[BlackElo "1850"]
[PlyCount "61"]
[EventDate "2023.09.09"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Ne2 d6 3. g3 Nc6 4. Bg2 Nf6 5. c3 e6 6. d4 cxd4 7. cxd4 Be7 8. Nbc3 0-0 9. 0-0 e5 10. d5 Nb8 11. f3 Nbd7 12. Be3 b6 13. b4 Bb7 14. Qb3 Rc8 15. a4 Ba6 16. Nb5 Ne8 17. Nec3 Nc7 18. Nxa7 Bxf1 19. Nxc8 Bxg2 20. Nxe7+ Qxe7 21. Kxg2 f5 22. Qc4 Ne8 23. a5 bxa5 24. bxa5 f4 25. Bf2 fxg3 26. hxg3 Qf7 27. Qe2 Nc7 28. a6 Na8 29. Nb5 Qe7 30. a7 Rc8 31. Ra6 1-0

[Event "EU-ch Blitz"]
[Site "Katowice"]
[Date "2022.12.16"]
[Round "1"]
[White "Deren, Marcin"]
[Black "Svane, Rasmus"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1862"]
[BlackElo "2622"]
[PlyCount "58"]
[EventDate "2022.12.16"]
[EventType "swiss (blitz)"]
[EventRounds "22"]
[EventCountry "POL"]
[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 e6 4. Nf3 Bd6 5. Bxd6 Qxd6 6. c3 0-0 7. Bd3 Nbd7 8. 0-0 e5 9. dxe5 Nxe5 10. Nxe5 Qxe5 11. Nd2 Rd8 12. Nf3 Qe7 13. Rc1 c5 14. h3 b6 15. Re1 Bb7 16. Bb1 Rd6 17. Nh2 Rad8 18. Ng4 Ne4 19. Qe2 h5 20. Nh2 g6 21. Rcd1 Qf6 22. Nf1 Qe5 23. Nd2 Nf6 24. Nf3 Qe7 25. Bc2 Kg7 26. Bb1 a5 27. b3 Ne4 28. Qc2 Qf6 29. Re2 Nxc3 0-1

[Event "EU-ch Blitz"]
[Site "Katowice"]
[Date "2022.12.16"]
[Round "2"]
[White "Svane, Rasmus"]
[Black "Deren, Marcin"]
[Result "1-0"]
[ECO "D34"]
[WhiteElo "2622"]
[BlackElo "1862"]
[PlyCount "59"]
[EventDate "2022.12.16"]
[EventType "swiss (blitz)"]
[EventRounds "22"]
[EventCountry "POL"]
[SourceTitle "CBM 211 Extra"]
[Source "ChessBase"]
[SourceDate "2023.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.01.31"]
[SourceQuality "1"]

1. Nf3 e6 2. g3 d5 3. Bg2 Nf6 4. 0-0 c5 5. c4 Be7 6. cxd5 exd5 7. d4 0-0 8. Nc3 h6 9. b3 Nc6 10. Bb2 Be6 11. Rc1 Rc8 12. e3 b6 13. Ne2 Ne4 14. Nf4 cxd4 15. Nxd4 Nxd4 16. Bxd4 Rxc1 17. Qxc1 Qc8 18. Qb2 Nf6 19. Rc1 Qd7 20. Rd1 Rd8 21. Qe2 Qc7 22. Bxf6 Bxf6 23. Bxd5 Bxd5 24. Nxd5 Qe5 25. Qf3 Kh8 26. Kg2 Rd6 27. h4 g5 28. hxg5 hxg5 29. e4 Kg7 30. Rh1 1-0

[Event "POL-chT 2nd League"]
[Site "Jastrzebia Gora"]
[Date "2022.09.08"]
[Round "6.128"]
[White "Spyra, Piotr"]
[Black "Deren, Marcin"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1901"]
[BlackElo "1922"]
[PlyCount "71"]
[EventDate "2022.09.03"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]
[WhiteTeam "Marklowice Hetman"]
[BlackTeam "Krakow Cracovia"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nf6 5. Nf3 e6 6. Na3 a6 7. Nc4 Nbd7 8. Be3 Ng4 9. h3 Nxe3 10. Nxe3 Qc6 11. Bc4 Nb6 12. Bb3 Qc7 13. 0-0 Be7 14. Re1 0-0 15. Bc2 Rd8 16. Qd3 g6 17. Qe4 Bd7 18. Ne5 Bc6 19. Qf4 Bd6 20. N3g4 f5 21. dxc5 Bxe5 22. Qxe5 Qxe5 23. Nxe5 Nd7 24. Nxc6 bxc6 25. Rxe6 Nxc5 26. Rxc6 Rdc8 27. Rxc8+ Rxc8 28. Rd1 Nb7 29. Bb3+ Kh8 30. Kf1 Nc5 31. Bc2 a5 32. Rd4 Ne6 33. Ra4 Rc5 34. Bb3 Ng5 35. f3 h5 36. Ke2 1-0

[Event "POL-chT 2nd League"]
[Site "Jastrzebia Gora"]
[Date "2022.09.07"]
[Round "5.136"]
[White "Wisniewski, Jacek"]
[Black "Deren, Marcin"]
[Result "1-0"]
[ECO "A05"]
[WhiteElo "1829"]
[BlackElo "1922"]
[PlyCount "136"]
[EventDate "2022.09.03"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]
[WhiteTeam "Bydgoszcz Chemik"]
[BlackTeam "Krakow Cracovia"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. b3 Nf6 2. Bb2 g6 3. Nf3 Bg7 4. g3 0-0 5. Bg2 d5 6. 0-0 c5 7. d3 Nc6 8. Ne5 Nxe5 9. Bxe5 Ng4 10. Bxg7 Kxg7 11. c4 Nf6 12. cxd5 Nxd5 13. Qc2 b6 14. Rd1 e5 15. Qb2 f6 16. e3 Rb8 17. d4 exd4 18. exd4 Ne7 19. Na3 cxd4 20. Rxd4 Qc7 21. Rc1 Qe5 22. Nc4 Qf5 23. Nd6 Qe5 24. Nc4 Qf5 25. Re1 Qc5 26. b4 Qc7 27. Nd6 a6 28. Rc1 Qa7 29. Qc3 Kh8 30. g4 Be6 31. Re1 Bg8 32. Rf4 Nd5 33. Bxd5 Bxd5 34. Rxf6 Qg7 35. g5 Kg8 36. a3 Qd7 37. Qd4 Rxf6 38. Qxd5+ Rf7 39. Qxf7+ Qxf7 40. Nxf7 Kxf7 41. Rc1 Ke6 42. Kg2 Kd6 43. Rc3 Rb7 44. Kg3 Re7 45. Rf3 Kc6 46. Rd3 Kb5 47. Rc3 a5 48. bxa5 Kxa5 49. h4 b5 50. f4 Ka4 51. Kg4 b4 52. axb4 Kxb4 53. Rc1 Kb5 54. h5 Rb7 55. hxg6 hxg6 56. Kf3 Re7 57. Rc8 Re6 58. Rc3 Kb6 59. Rc4 Kb5 60. Re4 Rc6 61. Re5+ Kb6 62. f5 gxf5 63. Rxf5 Kc7 64. Rd5 Rc1 65. Kg4 Rg1+ 66. Kf3 Rf1+ 67. Kg2 Rf7 68. g6 Rg7 1-0

[Event "POL-chT 2nd League"]
[Site "Jastrzebia Gora"]
[Date "2022.09.06"]
[Round "4.129"]
[White "Deren, Marcin"]
[Black "Flis, Pawel"]
[Result "0-1"]
[ECO "A56"]
[WhiteElo "1922"]
[BlackElo "1936"]
[PlyCount "138"]
[EventDate "2022.09.03"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]
[WhiteTeam "Krakow Cracovia"]
[BlackTeam "Lodz Okucia Budowlane"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Bf4 c5 5. d5 d6 6. e4 0-0 7. Bd3 a6 8. a4 e6 9. Nge2 exd5 10. exd5 Nh5 11. Bg3 Nxg3 12. hxg3 Nd7 13. f4 Nf6 14. 0-0 Ng4 15. Qd2 f5 16. Nd1 Bd7 17. Nf2 Nf6 18. Kh1 Re8 19. Nc3 Nh5 20. Kh2 Bd4 21. Rae1 Qf6 22. a5 Qg7 23. Nh3 Qh6 24. Rxe8+ Rxe8 25. Re1 Nf6 26. Rxe8+ Bxe8 27. Ne2 Ng4+ 28. Kh1 Be3 29. Qc3 Bd7 30. Qc2 Qg7 31. Qc3 Qe7 32. Qb3 Bc8 33. Qb6 Bd2 34. Neg1 h6 35. Be2 Nf6 36. Bf3 Ne8 37. Be2 Qc7 38. Bd3 Bxa5 39. Qb3 Nf6 40. Nf2 Be1 41. Ngh3 Qe7 42. Kg1 Qe3 43. Qb6 Qe7 44. Qb3 Kg7 45. Qb6 Bb4 46. Bf1 Ne8 47. Nd3 Bd2 48. Nhf2 Be3 49. Be2 Qc7 50. Qb3 Nf6 51. Bf3 Bd4 52. Kf1 Bd7 53. Ne1 b5 54. cxb5 axb5 55. Nc2 c4 56. Qb4 Qc5 57. Qe1 Kf7 58. Nd1 Ng4 59. Bxg4 fxg4 60. Qd2 Bg7 61. Nce3 h5 62. Nc3 Qd4 63. Qe2 b4 64. Nc2 Qb6 65. Ne4 c3 66. Ng5+ Kf8 67. bxc3 bxc3 68. Ne6+ Kg8 69. Nxg7 Bb5 0-1

[Event "POL-chT 2nd League"]
[Site "Jastrzebia Gora"]
[Date "2022.09.05"]
[Round "3.123"]
[White "Boruta, Dawid"]
[Black "Deren, Marcin"]
[Result "1-0"]
[ECO "A02"]
[WhiteElo "1912"]
[BlackElo "1922"]
[PlyCount "91"]
[EventDate "2022.09.03"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]
[WhiteTeam "Zory Roszada"]
[BlackTeam "Krakow Cracovia"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. f4 g6 2. Nf3 Bg7 3. g3 d6 4. Bg2 e5 5. e4 Nc6 6. c3 Nf6 7. d3 0-0 8. 0-0 h6 9. Na3 Be6 10. f5 Bd7 11. fxg6 fxg6 12. Qb3+ Kh7 13. Qxb7 Na5 14. Qa6 Nc6 15. Qa4 Rb8 16. Qc2 Qe7 17. Nc4 Be6 18. b3 Rfe8 19. Bd2 Rbd8 20. Rae1 Bc8 21. Nh4 Rf8 22. Ne3 Ba6 23. Nd5 Qd7 24. Be3 Ne7 25. Nxe7 Qxe7 26. c4 c6 27. Kh1 Bc8 28. b4 Qb7 29. Rb1 Ng4 30. Bg1 Rxf1 31. Bxf1 Rf8 32. h3 Nf6 33. Bg2 Nh5 34. Kh2 Qe7 35. Be3 Be6 36. Qe2 Nf4 37. Qd2 Nxg2 38. Qxg2 Bf6 39. Nf3 Qd7 40. Rf1 Bg7 41. a4 g5 42. b5 Qc7 43. Bxg5 Rxf3 44. Qxf3 hxg5 45. Qh5+ Bh6 46. Rf6 1-0

[Event "POL-chT 2nd League"]
[Site "Jastrzebia Gora"]
[Date "2022.09.04"]
[Round "2.106"]
[White "Kitewski, Bartosz"]
[Black "Deren, Marcin"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "1993"]
[BlackElo "1922"]
[PlyCount "87"]
[EventDate "2022.09.03"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]
[WhiteTeam "Olsztyn Trzydziestka"]
[BlackTeam "Krakow Cracovia"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Be7 6. e3 0-0 7. Bd3 Nbd7 8. Nge2 Re8 9. 0-0 Nf8 10. Qb3 c6 11. f3 Ne6 12. Bh4 Qb6 13. Qc2 h6 14. Rad1 Qc7 15. Qd2 Bd6 16. h3 Nh5 17. Bf2 Ng3 18. Rfe1 Nxe2+ 19. Nxe2 Bd7 20. Bb1 Rad8 21. Qc2 Nf8 22. e4 g6 23. Qd2 Kg7 24. Be3 h5 25. e5 Be7 26. Bh6+ Kg8 27. Bg5 Bc8 28. Ng3 Ne6 29. h4 Nxg5 30. hxg5 Bf8 31. f4 Bg4 32. Rc1 Qb6 33. a3 Bg7 34. f5 Bxe5 35. Rxe5 Rxe5 36. fxg6 fxg6 37. Bxg6 Rf8 38. Bxh5 Bxh5 39. Nxh5 Ref5 40. Re1 Qc7 41. Nf6+ Kf7 42. Qe2 Rxg5 43. Nh7 Rgg8 44. Rf1+ 1-0

[Event "POL-chT 2nd League"]
[Site "Jastrzebia Gora"]
[Date "2022.09.03"]
[Round "1.118"]
[White "Deren, Marcin"]
[Black "Gawronski, Miroslaw"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1922"]
[BlackElo "1966"]
[PlyCount "56"]
[EventDate "2022.09.03"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]
[WhiteTeam "Krakow Cracovia"]
[BlackTeam "Plock Hetman"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. d4 c5 2. c3 d5 3. Nf3 Nc6 4. g3 e6 5. Bg2 f5 6. Ne5 Nf6 7. 0-0 Be7 8. Qa4 Qb6 9. Nd2 cxd4 10. Nxc6 bxc6 11. cxd4 a5 12. Nf3 Ba6 13. Re1 Ne4 14. Bd2 Nxd2 15. Nxd2 0-0 16. Nf3 Rfc8 17. e3 Rab8 18. Ne5 Bb5 19. Qd1 c5 20. b3 Bf6 21. Rc1 Bxe5 22. dxe5 a4 23. bxa4 Be8 24. Rb1 Qa5 25. Rxb8 Rxb8 26. Bxd5 exd5 27. Qxd5+ Bf7 28. e6 Qxe1+ 0-1

[Event "EU-ch Rapid"]
[Site "Katowice"]
[Date "2021.12.18"]
[Round "2"]
[White "Wisniewski, Adrian"]
[Black "Deren, Marcin"]
[Result "1-0"]
[ECO "B50"]
[WhiteElo "2351"]
[BlackElo "1936"]
[PlyCount "71"]
[EventDate "2021.12.18"]
[EventType "swiss (rapid)"]
[EventRounds "11"]
[EventCountry "POL"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Bc4 e6 5. d3 Be7 6. Nbd2 0-0 7. 0-0 d5 8. Bb3 dxe4 9. dxe4 Qc7 10. Re1 Rd8 11. Qe2 b6 12. e5 Nd5 13. Nf1 Nd7 14. Ng3 Nf8 15. h4 h6 16. Bc2 Bb7 17. a3 c4 18. h5 b5 19. Nd4 a6 20. Qg4 Kh8 21. Bd2 Bc5 22. Rad1 Ne7 23. Bc1 Nc6 24. Nf3 Rxd1 25. Bxd1 Qb6 26. Be3 Rd8 27. Bc2 Bxe3 28. Rxe3 Ne7 29. Nd4 Nd5 30. Re1 Ne7 31. Ne4 Bxe4 32. Qxe4 Nd5 33. Qf3 Qa7 34. Nc6 Qd7 35. Nxd8 Qxd8 36. Qxf7 1-0

[Event "EU-ch Blitz"]
[Site "Katowice"]
[Date "2021.12.17"]
[Round "3"]
[White "Deren, Marcin"]
[Black "Vetoshko, Volodymyr"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1936"]
[BlackElo "2501"]
[PlyCount "86"]
[EventDate "2021.12.17"]
[EventType "swiss (blitz)"]
[EventRounds "22"]
[EventCountry "POL"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 c5 4. c3 Nc6 5. h3 Bf5 6. e3 Qb6 7. Qb3 c4 8. Qxb6 axb6 9. Nbd2 b5 10. Ne5 h6 11. g4 Bh7 12. Bg2 e6 13. 0-0 Be7 14. Rfe1 Nxe5 15. Bxe5 0-0 16. e4 Nxe4 17. Bxe4 dxe4 18. Nxe4 Bxe4 19. Rxe4 b4 20. cxb4 Bxb4 21. a3 Be7 22. Rc1 b5 23. Kf1 Rfd8 24. f4 f6 25. Bc7 Rd7 26. Bb6 Ra6 27. Bc5 Bxc5 28. dxc5 Kf7 29. Ke2 Rd5 30. Rd1 Rc6 31. Red4 Rcxc5 32. Ke3 Ke7 33. Rg1 Rxd4 34. Kxd4 Rd5+ 35. Ke3 Rd3+ 36. Ke4 g6 37. f5 exf5+ 38. gxf5 g5 39. Re1 Kd6 40. h4 gxh4 41. Rh1 h3 42. Kf4 Kd5 43. Rg1 h2 0-1

[Event "EU-ch Blitz"]
[Site "Katowice"]
[Date "2021.12.17"]
[Round "4"]
[White "Vetoshko, Volodymyr"]
[Black "Deren, Marcin"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2501"]
[BlackElo "1936"]
[PlyCount "86"]
[EventDate "2021.12.17"]
[EventType "swiss (blitz)"]
[EventRounds "22"]
[EventCountry "POL"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 c5 4. c3 Nc6 5. h3 Bf5 6. e3 Qb6 7. Qb3 c4 8. Qxb6 axb6 9. Nbd2 b5 10. Ne5 h6 11. g4 Bh7 12. Bg2 e6 13. 0-0 Be7 14. Rfe1 Nxe5 15. Bxe5 0-0 16. e4 Nxe4 17. Bxe4 dxe4 18. Nxe4 Bxe4 19. Rxe4 b4 20. cxb4 Bxb4 21. a3 Be7 22. Rc1 b5 23. Kf1 Rfd8 24. f4 f6 25. Bc7 Rd7 26. Bb6 Ra6 27. Bc5 Bxc5 28. dxc5 Kf7 29. Ke2 Rd5 30. Rd1 Rc6 31. Red4 Rcxc5 32. Ke3 Ke7 33. Rg1 Rxd4 34. Kxd4 Rd5+ 35. Ke3 Rd3+ 36. Ke4 g6 37. f5 exf5+ 38. gxf5 g5 39. Re1 Kd6 40. h4 gxh4 41. Rh1 h3 42. Kf4 Kd5 43. Rg1 h2 1-0

[Event "Katowice POL-HUN 6th"]
[Site "Katowice"]
[Date "2018.05.05"]
[Round "2"]
[White "Klekowski, Maciej"]
[Black "Deren, Marcin"]
[Result "1-0"]
[ECO "A23"]
[WhiteElo "2509"]
[BlackElo "1978"]
[PlyCount "67"]
[EventDate "2018.05.05"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. g3 Bc5 4. Bg2 0-0 5. e3 c6 6. Nge2 d5 7. cxd5 cxd5 8. d4 exd4 9. exd4 Bb4 10. 0-0 Nc6 11. Bg5 Be6 12. Bxf6 Qxf6 13. Nxd5 Bxd5 14. Bxd5 Rad8 15. Bxc6 bxc6 16. Rc1 Rfe8 17. a3 Ba5 18. Qd3 Bb6 19. Rcd1 c5 20. Rfe1 cxd4 21. Nf4 Rxe1+ 22. Rxe1 g6 23. Re2 Rc8 24. Qe4 Rc1+ 25. Kg2 Qc6 26. Qxc6 Rxc6 27. Nd3 Kf8 28. Kf1 Re6 29. Rxe6 fxe6 30. Ke2 Ke7 31. Kf3 Kd6 32. Ke4 a5 33. Ne5 Ke7 34. f3 1-0

[Event "Katowice POL-HUN 5th"]
[Site "Katowice"]
[Date "2017.05.21"]
[Round "8"]
[White "Deren, Marcin"]
[Black "Rudecki, Bartosz"]
[Result "1/2-1/2"]
[ECO "C63"]
[WhiteElo "1978"]
[BlackElo "2007"]
[PlyCount "38"]
[EventDate "2017.05.20"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 4. d3 fxe4 5. dxe4 Nf6 6. Bg5 Bc5 7. 0-0 d6 8. Nc3 0-0 9. Nd5 Be6 10. Nxf6+ gxf6 11. Bh6 Re8 12. Nh4 Kh8 13. Qh5 Rg8 14. Kh1 Nd4 15. Bd3 Bg4 16. Qf7 Be6 17. Qh5 Bg4 18. Qf7 Be6 19. Qh5 Bg4 1/2-1/2

[Event "Katowice POL-HUN 5th"]
[Site "Katowice"]
[Date "2017.05.21"]
[Round "9"]
[White "Koloczek, Maciej"]
[Black "Deren, Marcin"]
[Result "1/2-1/2"]
[ECO "A08"]
[WhiteElo "1725"]
[BlackElo "1978"]
[PlyCount "78"]
[EventDate "2017.05.20"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d3 Nc6 4. g3 g6 5. Bg2 Bg7 6. 0-0 Nge7 7. Nbd2 0-0 8. Re1 d5 9. e5 Qc7 10. Qe2 b6 11. Nf1 Ba6 12. h4 Rac8 13. Bf4 Nf5 14. g4 Nfd4 15. Nxd4 Nxd4 16. Qd2 Nc6 17. Qe2 Nd4 18. Qd2 Nc6 19. Qe3 Nb4 20. Rec1 d4 21. Qe4 Rb8 22. a3 Bb7 23. Qe2 Bxg2 24. Kxg2 Nd5 25. Bg3 Qb7 26. Qe4 Ne7 27. Nd2 Nc6 28. Nc4 Ne7 29. Nd2 Nc6 30. Nc4 Ne7 31. Qxb7 Rxb7 32. Nd6 Rd7 33. Rh1 Nc6 34. Rae1 Rfd8 35. Nc4 Ne7 36. Nd6 Nc6 37. Nc4 b5 38. Nd2 Ne7 39. Ne4 Rc8 1/2-1/2

[Event "Katowice POL-HUN 5th"]
[Site "Katowice"]
[Date "2017.05.21"]
[Round "7"]
[White "Piesik, Piotr"]
[Black "Deren, Marcin"]
[Result "1/2-1/2"]
[ECO "D79"]
[WhiteElo "2337"]
[BlackElo "1978"]
[PlyCount "75"]
[EventDate "2017.05.20"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. 0-0 0-0 5. d4 d5 6. c4 c6 7. Nc3 Bf5 8. cxd5 cxd5 9. Qb3 Qb6 10. Nxd5 Nxd5 11. Qxd5 Rd8 12. Qb3 Qxb3 13. axb3 Nc6 14. e3 Bc2 15. Nd2 e5 16. dxe5 Bxe5 17. Ne4 Rac8 18. Nc3 Bxb3 19. e4 a6 20. Bh6 Nb4 21. Be3 Nc2 22. Rad1 Nxe3 23. Rxd8+ Rxd8 24. fxe3 Rd2 25. Rf2 Bxc3 26. bxc3 Rxf2 27. Kxf2 a5 28. Ke1 Kg7 29. e5 b6 30. Kd2 Kf8 31. Kd3 Ke7 32. c4 Ke6 33. Kd4 h6 34. Bd5+ Ke7 35. e4 Bd1 36. c5 bxc5+ 37. Kxc5 a4 38. Kb4 1/2-1/2

[Event "Katowice POL-HUN 5th"]
[Site "Katowice"]
[Date "2017.05.20"]
[Round "5"]
[White "Budrewicz, Krzysztof"]
[Black "Deren, Marcin"]
[Result "1-0"]
[ECO "D34"]
[WhiteElo "2190"]
[BlackElo "1978"]
[PlyCount "95"]
[EventDate "2017.05.20"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Be7 5. Bg2 0-0 6. 0-0 c5 7. cxd5 exd5 8. Nc3 Nc6 9. h3 h6 10. Be3 c4 11. a4 Re8 12. b3 Na5 13. bxc4 Nxc4 14. Bf4 Be6 15. Rb1 b6 16. Ne5 Rc8 17. Nb5 Na3 18. Rc1 Nxb5 19. axb5 Bd6 20. Nc6 Qd7 21. Bxd6 Qxd6 22. Nxa7 Rxc1 23. Qxc1 Qd7 24. Nc6 Bxh3 25. Ne5 Qf5 26. Qc7 Rf8 27. Nc6 Kh8 28. Qe5 Qxe5 29. dxe5 Bxg2 30. Kxg2 Ne4 31. Ra1 Nc3 32. Nd4 Re8 33. f4 Rc8 34. Ra7 Rc4 35. e3 Kg8 36. Rb7 Rb4 37. Rb8+ Kh7 38. Rxb6 Rb2+ 39. Kf1 Ne4 40. g4 Rb1+ 41. Ke2 Rb2+ 42. Kd1 Rd2+ 43. Kc1 Rd3 44. Rb7 Rxe3 45. Rxf7 Re1+ 46. Kc2 Kg6 47. Ra7 Re2+ 48. Kc1 1-0

[Event "Katowice POL-HUN 5th"]
[Site "Katowice"]
[Date "2017.05.20"]
[Round "3"]
[White "Kucza, Karol"]
[Black "Deren, Marcin"]
[Result "1-0"]
[ECO "B48"]
[WhiteElo "2278"]
[BlackElo "1978"]
[PlyCount "49"]
[EventDate "2017.05.20"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 a6 6. Be3 Qc7 7. Qd2 Bb4 8. a3 Qa5 9. Nb3 Bxc3 10. Nxa5 Bxd2+ 11. Bxd2 Nf6 12. f3 0-0 13. 0-0-0 d5 14. exd5 Nxd5 15. Nxc6 bxc6 16. c4 Nf6 17. Bb4 Re8 18. Be2 a5 19. Bc3 Bb7 20. Bxf6 gxf6 21. Rd7 Rab8 22. Rhd1 c5 23. Rc7 Rec8 24. Rdd7 Rxc7 25. Rxc7 1-0

[Event "Swiss-540.4.03"]
[Site "IECC email"]
[Date "2010.08.23"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Bascetta, Biagio J"]
[Result "1/2-1/2"]
[ECO "B03"]
[WhiteElo "1707"]
[BlackElo "1925"]
[PlyCount "45"]
[EventDate "2010.??.??"]
[EventType "tourn (corr)"]
[SourceTitle "Telechess CBM 145"]
[Source "Chessbase"]
[SourceDate "2011.11.11"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.11"]
[SourceQuality "1"]
[WhiteTeam "Poland"]
[BlackTeam "Italy"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "ITA"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. c5 dxc5 6. dxc5 Qxd1+ 7. Kxd1 Nd5 8. Nc3 Nxc3+ 9. bxc3 Nc6 10. f4 Bf5 11. Ke1 e6 12. Be3 0-0-0 13. Nf3 h6 14. Kf2 Be7 15. h4 Be4 16. h5 a6 17. Be2 Rd5 18. Nd2 Bd3 19. Bf3 Rd7 20. Nb3 Bh7 21. Bxc6 bxc6 22. Bd4 Be4 23. Rhe1 1/2-1/2

[Event "W-ch WS/O/363 email"]
[Site "ICCF email"]
[Date "2010.05.02"]
[Round "?"]
[White "Baumgartner, Mike"]
[Black "Deren, Marcin"]
[Result "1-0"]
[ECO "A08"]
[BlackElo "1968"]
[PlyCount "67"]
[EventDate "2010.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[SourceTitle "Corr 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.12"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d3 Nc6 4. g3 g6 5. Bg2 Bg7 6. 0-0 Nge7 7. c3 d5 8. Qe2 0-0 9. Nbd2 b6 10. Re1 Ba6 11. e5 Qc7 12. Nf1 d4 13. c4 b5 14. b3 bxc4 15. bxc4 Rab8 16. h4 Bb7 17. N1h2 Kh8 18. h5 h6 19. Ng4 Nf5 20. hxg6 fxg6 21. Rb1 Nb4 22. a3 Nc6 23. Nd2 Ba8 24. Rxb8 Rxb8 25. Nf6 Bb7 26. Nf3 Nfe7 27. Bf4 Na5 28. Nh4 Bxg2 29. Kxg2 Rb3 30. Qg4 Bf8 31. Nxg6+ Nxg6 32. Qxg6 Qg7 33. Qh5 Rxd3 34. Bxh6 1-0

[Event "W-ch WS/O/363 email"]
[Site "ICCF email"]
[Date "2010.05.02"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Datuin, Jean Paul G"]
[Result "1-0"]
[ECO "C10"]
[WhiteElo "1968"]
[PlyCount "41"]
[EventDate "2010.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[SourceTitle "Corr 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.12"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Be7 5. Nf3 Nf6 6. Nxf6+ Bxf6 7. c3 0-0 8. Bd3 Nc6 9. 0-0 Qd5 10. Bf4 Bd7 11. Bxc7 Rac8 12. Bg3 Rfe8 13. Re1 Na5 14. Ne5 Bc6 15. Be4 Qb5 16. Bxh7+ Kxh7 17. Qh5+ Kg8 18. Qxf7+ Kh7 19. Ng4 Qxb2 20. Nxf6+ Kh8 21. Qh5# 1-0

[Event "W-ch WS/O/363 email"]
[Site "ICCF email"]
[Date "2010.05.02"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Ewell, Michael R"]
[Result "1-0"]
[ECO "C78"]
[WhiteElo "1968"]
[BlackElo "1688"]
[PlyCount "29"]
[EventDate "2010.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[SourceTitle "Corr 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.12"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Bc5 6. c3 0-0 7. d4 exd4 8. cxd4 Ba7 9. e5 Nd5 10. Bb3 Nde7 11. d5 Na5 12. Bc2 Ng6 13. Bxg6 fxg6 14. b4 Nc4 15. d6 1-0

[Event "W-ch WS/O/363 email"]
[Site "ICCF email"]
[Date "2010.05.02"]
[Round "?"]
[White "Kosirog, Nicolai"]
[Black "Deren, Marcin"]
[Result "1/2-1/2"]
[ECO "E40"]
[BlackElo "1968"]
[PlyCount "86"]
[EventDate "2010.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[SourceTitle "Corr 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.12"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 0-0 5. Bd3 Nc6 6. Nf3 d6 7. 0-0 Bxc3 8. bxc3 e5 9. Nd2 Re8 10. f3 b6 11. Qc2 Bb7 12. Rb1 h6 13. d5 Ne7 14. a4 c6 15. e4 Ng6 16. Nb3 Qc7 17. a5 Rec8 18. Be3 Ba6 19. Rfc1 Rab8 20. axb6 axb6 21. Nd2 Nd7 22. Rb4 Nc5 23. Rcb1 Rb7 24. Bf1 Ra8 25. Qb2 Rab8 26. Nb3 Ne7 27. Be2 Kh7 28. Qc2 Ra8 29. Nxc5 bxc5 30. Rxb7 Bxb7 31. f4 Ng6 32. f5 Ne7 33. Bd3 f6 34. Kf2 Ba6 35. Kf3 cxd5 36. cxd5 Bxd3 37. Qxd3 Ra3 38. Bc1 Ra4 39. Qc2 Qa7 40. Qb3 Qa5 41. Bd2 Ra3 42. Qc4 Nc8 43. Rb7 Nb6 1/2-1/2

[Event "W-ch WS/O/363 email"]
[Site "ICCF email"]
[Date "2010.05.02"]
[Round "?"]
[White "Vila Nova, Reinaldo Herminio C"]
[Black "Deren, Marcin"]
[Result "0-1"]
[ECO "B30"]
[WhiteElo "1631"]
[BlackElo "1968"]
[PlyCount "66"]
[EventDate "2010.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[SourceTitle "Corr 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.12"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. Nc3 Nc6 4. Bb5 Nge7 5. 0-0 a6 6. Bxc6 Nxc6 7. d4 cxd4 8. Nxd4 Qc7 9. Nxc6 bxc6 10. a3 Be7 11. Kh1 0-0 12. Be3 d5 13. exd5 cxd5 14. Na4 Bb7 15. Rc1 Qc6 16. Nc3 d4 17. Qf3 Qxf3 18. gxf3 Bxf3+ 19. Kg1 dxc3 20. Bd4 cxb2 21. Bxb2 Rac8 22. Rfe1 Bg5 23. Rb1 Rxc2 24. h4 Bxh4 25. Bd4 h5 26. Rec1 Rfc8 27. Rxc2 Rxc2 28. Be3 f5 29. a4 Bf6 30. Rb8+ Kh7 31. Rb6 e5 32. Rxa6 f4 33. Bb6 Rc1+ 0-1

[Event "IECC Swiss-540"]
[Site "IECC email"]
[Date "2010.02.25"]
[Round "?"]
[White "Kasznia, Ireneusz"]
[Black "Deren, Marcin"]
[Result "1/2-1/2"]
[ECO "E39"]
[WhiteElo "1894"]
[BlackElo "1698"]
[PlyCount "34"]
[EventDate "2010.??.??"]
[EventType "match (corr)"]
[SourceTitle "Corr 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.12"]
[SourceQuality "1"]
[WhiteTeam "Poland"]
[BlackTeam "Poland"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 0-0 5. Nf3 c5 6. dxc5 Na6 7. a3 Bxc3+ 8. Qxc3 Nxc5 9. Bg5 Nce4 10. Bxf6 Nxf6 11. e3 b6 12. Be2 Ne4 13. Qd4 Bb7 14. 0-0 d6 15. Rad1 f5 16. b4 Qf6 17. Qxf6 Rxf6 1/2-1/2

[Event "IECC KO-3074"]
[Site "IECC email"]
[Date "2010.02.08"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Duchene, Klaus"]
[Result "1/2-1/2"]
[ECO "B03"]
[WhiteElo "1700"]
[BlackElo "1733"]
[PlyCount "77"]
[EventDate "2010.??.??"]
[EventType "match (corr)"]
[EventRounds "2"]
[SourceTitle "Telechess CBM 145"]
[Source "Chessbase"]
[SourceDate "2011.11.11"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.11"]
[SourceQuality "1"]
[WhiteTeam "Poland"]
[BlackTeam "Germany"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "GER"]

1. e4 Nf6 2. e5 Nd5 3. d4 Nc6 4. c4 Nb6 5. f4 d5 6. c5 Nc4 7. Bxc4 dxc4 8. d5 Na5 9. Nf3 c6 10. d6 b6 11. Qa4 bxc5 12. dxe7 Bxe7 13. Bd2 Nb7 14. Qxc6+ Qd7 15. Qxd7+ Bxd7 16. Na3 Be6 17. Rc1 c3 18. Rxc3 Bxa2 19. Nc4 0-0 20. Kf2 a5 21. Rhc1 f6 22. Ra1 Bxc4 23. Rxc4 fxe5 24. fxe5 Ra6 25. Rca4 Bd8 26. Bc3 Bc7 27. Kg1 h6 28. Kf2 Rf7 29. Ke3 Rg6 30. g3 Rd7 31. g4 Re6 32. g5 hxg5 33. Nxg5 Re8 34. Re4 Rd5 35. Rg1 c4 36. Nf3 Bb6+ 37. Bd4 Nc5 38. Reg4 Rxd4 39. Rxg7+ 1/2-1/2

[Event "IECC KO-3074"]
[Site "IECC email"]
[Date "2010.02.08"]
[Round "?"]
[White "Duchene, Klaus"]
[Black "Deren, Marcin"]
[Result "1-0"]
[ECO "E61"]
[WhiteElo "1718"]
[BlackElo "1715"]
[PlyCount "73"]
[EventDate "2010.??.??"]
[EventType "match (corr)"]
[EventRounds "2"]
[SourceTitle "Telechess CBM 145"]
[Source "Chessbase"]
[SourceDate "2011.11.11"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.11"]
[SourceQuality "1"]
[WhiteTeam "Germany"]
[BlackTeam "Poland"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "POL"]

1. c4 e5 2. g3 Nc6 3. Bg2 g6 4. Nc3 Bg7 5. e3 Nf6 6. Nge2 0-0 7. 0-0 d6 8. d4 exd4 9. Nxd4 Bd7 10. b3 Re8 11. Bb2 Nxd4 12. exd4 c6 13. Qd2 Qa5 14. Rad1 Rad8 15. d5 c5 16. Qc1 Bf5 17. h3 h5 18. f3 Re7 19. g4 Bc8 20. Na4 Rdd7 21. f4 hxg4 22. f5 gxf5 23. Rxf5 Nh7 24. Bxg7 Kxg7 25. hxg4 f6 26. Nc3 Rd8 27. Rf4 Kg8 28. Be4 Rf8 29. Kf2 Ng5 30. Rh1 Rg7 31. Bb1 a6 32. Rh6 b5 33. Bg6 Nf7 34. Bxf7+ Rfxf7 35. Qe3 Bd7 36. a4 bxa4 37. Ne4 1-0

[Event "Swiss-540.2.03"]
[Site "IECC email"]
[Date "2009.08.25"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Wozniak, Zbigniew"]
[Result "1/2-1/2"]
[ECO "B80"]
[WhiteElo "1689"]
[BlackElo "1931"]
[PlyCount "47"]
[EventDate "2009.??.??"]
[EventType "tourn (corr)"]
[SourceTitle "Telechess CBM 149"]
[Source "ChessBase"]
[SourceDate "2012.07.17"]
[SourceVersion "1"]
[SourceVersionDate "2012.07.17"]
[SourceQuality "1"]
[WhiteTeam "Poland"]
[BlackTeam "Poland"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. Bd3 b5 8. 0-0 Bb7 9. f3 Nbd7 10. Qd2 Qc7 11. Rfe1 Be7 12. b4 0-0 13. a4 d5 14. exd5 Bxd5 15. Reb1 bxa4 16. Rxa4 Bd6 17. Rxa6 Rxa6 18. Bxa6 Bxh2+ 19. Kh1 Qe5 20. Bg5 h6 21. f4 Qd6 22. Bxf6 Nxf6 23. Kxh2 Qxa6 24. Nxd5 1/2-1/2

[Event "IECC Swiss-530.4"]
[Site "IECC email"]
[Date "2009.03.25"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Kukla, Kevin"]
[Result "1/2-1/2"]
[ECO "B05"]
[WhiteElo "1688"]
[BlackElo "1726"]
[PlyCount "42"]
[EventDate "2009.??.??"]
[EventType "tourn (corr)"]
[EventRounds "1"]
[SourceTitle "Telechess CBM 137"]
[Source "ChessBase"]
[SourceDate "2010.07.15"]
[SourceVersion "1"]
[SourceVersionDate "2010.07.15"]
[SourceQuality "1"]
[WhiteTeam "Poland"]
[BlackTeam "US of America"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "USA"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. Be2 e6 6. 0-0 Nc6 7. c4 Nde7 8. Qa4 dxe5 9. d5 exd5 10. cxd5 Bxf3 11. Bxf3 b5 12. Qxb5 Rb8 13. Qa4 Rb4 14. Qd1 Nd4 15. Nc3 c5 16. a3 Rb6 17. Qa4+ Qd7 18. Bd1 Qxa4 19. Bxa4+ Kd8 20. Re1 Ng6 21. Rb1 f5 1/2-1/2

[Event "IECC Swiss-540"]
[Site "IECC email"]
[Date "2009.02.06"]
[Round "?"]
[White "Takeuchi, Toshihiko"]
[Black "Deren, Marcin"]
[Result "0-1"]
[ECO "E48"]
[WhiteElo "1430"]
[BlackElo "1687"]
[PlyCount "30"]
[EventDate "2009.??.??"]
[EventType "match (corr)"]
[SourceTitle "Corr 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.12"]
[SourceQuality "1"]
[WhiteTeam "France"]
[BlackTeam "Australia"]
[WhiteTeamCountry "FRA"]
[BlackTeamCountry "AUS"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 0-0 5. Bd3 Nc6 6. Nge2 d5 7. cxd5 exd5 8. Qc2 Re8 9. 0-0 Bd6 10. a3 a6 11. b4 g6 12. Bb2 Bxh2+ 13. Kxh2 Ng4+ 14. Kg3 h5 15. Rh1 Qg5 0-1

[Event "IECC KO-3064"]
[Site "IECC email"]
[Date "2008.12.29"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Kasznia, Ireneusz"]
[Result "1/2-1/2"]
[ECO "C09"]
[WhiteElo "1683"]
[BlackElo "1819"]
[PlyCount "69"]
[EventDate "2008.??.??"]
[EventType "match (corr)"]
[EventRounds "2"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]
[WhiteTeam "Poland"]
[BlackTeam "Poland"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. dxc5 Bxc5 8. 0-0 Nge7 9. c4 dxc4 10. Ne4 Qb6 11. Bxc4 0-0 12. Nxc5 Qxc5 13. Qc2 Qh5 14. Be3 Bg4 15. Nd4 Rac8 16. Nxc6 Nxc6 17. f3 Bf5 18. Qa4 a6 19. Bb3 Rfe8 20. Rfe1 Qg6 21. Bf2 Ne5 22. Bg3 b5 23. Qd4 Nd3 24. Rxe8+ Rxe8 25. a4 h6 26. axb5 axb5 27. Rd1 Rc8 28. Kh1 Qf6 29. Qd5 Rc5 30. Qa8+ Kh7 31. Qa7 Rc8 32. Qxf7 Qxf7 33. Bxf7 Nxb2 34. Ra1 Nd3 35. h4 1/2-1/2

[Event "IECC KO-3064"]
[Site "IECC email"]
[Date "2008.12.29"]
[Round "?"]
[White "Kasznia, Ireneusz"]
[Black "Deren, Marcin"]
[Result "1-0"]
[ECO "E39"]
[WhiteElo "1809"]
[BlackElo "1693"]
[PlyCount "67"]
[EventDate "2008.??.??"]
[EventType "match (corr)"]
[EventRounds "2"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]
[WhiteTeam "Poland"]
[BlackTeam "Poland"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 0-0 5. Nf3 c5 6. dxc5 Na6 7. a3 Bxc3+ 8. Qxc3 Nxc5 9. Bg5 Nfe4 10. Bxd8 Nxc3 11. Ba5 Nb3 12. Bxc3 Nxa1 13. Nd4 e5 14. Nb5 d6 15. b4 Nc2+ 16. Kd2 Nd4 17. Bxd4 exd4 18. Nxd6 Rd8 19. c5 b6 20. e3 dxe3+ 21. Kxe3 bxc5 22. bxc5 Rb8 23. Bc4 Be6 24. Rc1 Rd7 25. Kd4 Bxc4 26. Rxc4 Rb1 27. Kd5 Rd1+ 28. Kc6 Re7 29. Nc8 Re6+ 30. Kc7 Ra1 31. a4 Rb1 32. c6 g5 33. Rc5 Kf8 34. Rb5 1-0

[Event "IECC Swiss-519.4"]
[Site "IECC email"]
[Date "2008.09.05"]
[Round "?"]
[White "Adamczyk, Matthias"]
[Black "Deren, Marcin"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1713"]
[BlackElo "1650"]
[PlyCount "46"]
[EventDate "2008.??.??"]
[EventType "tourn (corr)"]
[EventRounds "1"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]
[WhiteTeam "Germany"]
[BlackTeam "Poland"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "POL"]

1. d4 Nf6 2. g3 d5 3. Nc3 c5 4. Bg2 cxd4 5. Qxd4 Nc6 6. Qa4 d4 7. Nd1 e5 8. Bxc6+ bxc6 9. Qxc6+ Bd7 10. Qa6 Qb8 11. Qd3 Qb7 12. f3 Rc8 13. a4 Be7 14. e4 dxe3 15. Nxe3 e4 16. Qe2 0-0 17. c3 Bc5 18. h4 exf3 19. Nxf3 Rfe8 20. 0-0 Bxe3+ 21. Bxe3 Ng4 22. Ng5 Rxe3 23. Qg2 Bc6 0-1

[Event "IECC Swiss-530.3"]
[Site "IECC email"]
[Date "2008.08.25"]
[Round "?"]
[White "Sadler, Craig"]
[Black "Deren, Marcin"]
[Result "1/2-1/2"]
[ECO "B78"]
[WhiteElo "1887"]
[BlackElo "1678"]
[PlyCount "68"]
[EventDate "2008.??.??"]
[EventType "tourn (corr)"]
[EventRounds "1"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]
[WhiteTeam "Canada"]
[BlackTeam "Poland"]
[WhiteTeamCountry "CAN"]
[BlackTeamCountry "POL"]

1. e4 c5 2. Nc3 Nc6 3. Nf3 g6 4. d4 cxd4 5. Nxd4 Bg7 6. Be3 d6 7. Qd2 Nf6 8. f3 0-0 9. Bc4 Bd7 10. 0-0-0 Rc8 11. Bb3 Na5 12. Kb1 Nxb3 13. Nxb3 Be6 14. g4 Nd7 15. Bd4 Bxd4 16. Nxd4 Ne5 17. Qf2 Rxc3 18. Nxe6 fxe6 19. bxc3 Qa5 20. Qd4 Rxf3 21. Qb4 Qxb4+ 22. cxb4 Rf4 23. Rd4 a6 24. h3 b5 25. Kb2 Nc6 26. Rdd1 Nxb4 27. a3 Nc6 28. Rde1 Na5 29. Rhf1 e5 30. Kc3 Kg7 31. Rxf4 exf4 32. e5 dxe5 33. Rxe5 Kf6 34. Rc5 Nc4 1/2-1/2

[Event "IECC Swiss-518.4"]
[Site "IECC email"]
[Date "2008.06.23"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Bladyko, Pawel"]
[Result "1-0"]
[ECO "C68"]
[WhiteElo "1615"]
[BlackElo "1712"]
[PlyCount "93"]
[EventDate "2008.??.??"]
[EventType "tourn (corr)"]
[EventRounds "1"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]
[WhiteTeam "Poland"]
[BlackTeam "Poland"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. 0-0 Bg4 6. h3 Bh5 7. d3 Nf6 8. g4 Nxg4 9. hxg4 Bxg4 10. Nbd2 Qf6 11. Kg2 h5 12. Nc4 Bd6 13. Ne3 Be6 14. Qe2 g5 15. Nf5 Bxf5 16. exf5 0-0-0 17. Re1 g4 18. Nxe5 Rde8 19. Bf4 Re7 20. Qe4 Rhe8 21. d4 Qg7 22. f6 Qxf6 23. f3 c5 24. c3 Qe6 25. Re3 Bxe5 26. dxe5 f5 27. Qc2 h4 28. Rd1 Kb8 29. c4 b6 30. Red3 h3+ 31. Kh2 a5 32. fxg4 fxg4 33. Rd8+ Ka7 34. Qe4 Rxd8 35. Rxd8 c6 36. Kg3 Rc7 37. Rd6 Qe8 38. Rh6 Ka6 39. Kxg4 Qd7+ 40. e6 Qd1+ 41. Kf5 Rg7 42. Kf6 Rg8 43. Rxh3 Rf8+ 44. Kg7 Re8 45. Kf7 Qd8 46. e7 Rxe7+ 47. Qxe7 1-0

[Event "POL-ch55 qf04 email"]
[Site "ICCF email"]
[Date "2008.05.01"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Kazmierczak, Zenon"]
[Result "1-0"]
[ECO "B18"]
[WhiteElo "2074"]
[BlackElo "2005"]
[PlyCount "113"]
[EventDate "2008.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "POL"]
[SourceTitle "Corr 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.12"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. N1e2 Nf6 7. h4 h6 8. Nf4 Bh7 9. Bc4 Nbd7 10. 0-0 e6 11. Re1 a5 12. Bxe6 Be7 13. Bf5 0-0 14. Qd3 Kh8 15. Qb3 g6 16. Bd3 Ra7 17. a4 Bb4 18. c3 Bd6 19. Qd1 Re8 20. Rxe8+ Nxe8 21. Qb3 Bg8 22. Nge2 Kg7 23. g3 Nef6 24. Bd2 Qb6 25. Qxb6 Nxb6 26. c4 Nbd7 27. Kg2 Ra8 28. Re1 Bb4 29. Bxb4 axb4 30. b3 c5 31. Bb1 Bh7 32. d5 Re8 33. Bc2 Ng4 34. Bd3 b6 35. f3 Nge5 36. Ng1 Nf6 37. Ngh3 Nxd3 38. Nxd3 g5 39. hxg5 hxg5 40. Rxe8 Nxe8 41. a5 bxa5 42. Nxc5 Kf6 43. Kf2 Nd6 44. g4 Bc2 45. Ke3 a4 46. bxa4 Nxc4+ 47. Kd4 Nd2 48. a5 Nxf3+ 49. Kc4 b3 50. Nxb3 Ke5 51. a6 Be4 52. Kc5 Bxd5 53. Na5 Ng1 54. Nxg1 Ba8 55. Nc4+ Kf4 56. Nb6 Be4 57. Nh3+ 1-0

[Event "Warsaw-ch33 sf02 email"]
[Site "ICCF email"]
[Date "2008.05.01"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Kozlowski, Stanislaw"]
[Result "1-0"]
[ECO "C13"]
[WhiteElo "2074"]
[BlackElo "1800"]
[PlyCount "27"]
[EventDate "2008.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "POL"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 dxe4 5. Nxe4 Be7 6. Nxf6+ Bxf6 7. Bxf6 Qxf6 8. Nf3 0-0 9. Bd3 Nc6 10. 0-0 e5 11. d5 Nd4 12. Nxd4 exd4 13. Re1 Bd7 14. Qd2 1-0

[Event "Warsaw-ch33 sf02 email"]
[Site "ICCF email"]
[Date "2008.05.01"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Motyka, Jerzy"]
[Result "0-1"]
[ECO "B16"]
[WhiteElo "2074"]
[BlackElo "1973"]
[PlyCount "64"]
[EventDate "2008.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "POL"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Nf6 5. Nxf6+ gxf6 6. c3 Bf5 7. Bc4 e6 8. Ne2 h5 9. Ng3 Bg6 10. 0-0 h4 11. Ne2 Nd7 12. Nf4 Bf5 13. a4 Qc7 14. h3 0-0-0 15. Qf3 a5 16. Bd3 Bxd3 17. Nxd3 Bd6 18. Kh1 Rdg8 19. b4 Rg6 20. Rg1 Bh2 21. Bf4 Bxf4 22. Nxf4 Rg5 23. Nd3 Rhg8 24. Qe4 axb4 25. cxb4 Qd6 26. b5 Qd5 27. Qxd5 Rxd5 28. bxc6 bxc6 29. Nb4 Rd6 30. Rgc1 Kc7 31. Rc5 Nxc5 32. dxc5 Rd4 0-1

[Event "Warsaw-ch33 sf02 email"]
[Site "ICCF email"]
[Date "2008.05.01"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Oleksak, Andrzej"]
[Result "0-1"]
[ECO "B95"]
[WhiteElo "2074"]
[PlyCount "86"]
[EventDate "2008.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "POL"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. Be2 Be7 8. Qd3 Nbd7 9. 0-0 h6 10. Bd2 Ne5 11. Qg3 g5 12. Nf3 Ng6 13. h3 Qc7 14. Ne1 Bd7 15. Nd3 Bc6 16. Qe3 h5 17. Nb4 Bd7 18. Rad1 g4 19. a3 0-0-0 20. b3 gxh3 21. Qxh3 Rdg8 22. Qe3 h4 23. Qa7 Qb8 24. Qxb8+ Kxb8 25. Kh2 Ne5 26. Nd3 Nfg4+ 27. Kh3 Nxd3 28. Bxg4 Ne5 29. Be2 Rg7 30. Kh2 Rc8 31. Kh1 Bf6 32. a4 Be8 33. a5 Ng6 34. Bc4 h3 35. gxh3 Bc6 36. Rfe1 Nh4 37. Re3 Rcg8 38. Bd3 Be5 39. Ne2 f5 40. f4 Bf6 41. Bb4 d5 42. e5 d4+ 43. Be4 dxe3 0-1

[Event "POL-ch55 qf04 email"]
[Site "ICCF email"]
[Date "2008.05.01"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Rozanski, Robert"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2074"]
[PlyCount "11"]
[EventDate "2008.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "POL"]
[SourceTitle "Corr 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.19"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.19"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 1-0

[Event "Warsaw-ch33 sf02 email"]
[Site "ICCF email"]
[Date "2008.05.01"]
[Round "?"]
[White "Kopala, Marian"]
[Black "Deren, Marcin"]
[Result "1/2-1/2"]
[ECO "B40"]
[WhiteElo "2142"]
[BlackElo "2074"]
[PlyCount "36"]
[EventDate "2008.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "POL"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 Nd5 7. Qg4 g6 8. Bd2 0-0 9. Ndb5 Nc6 10. 0-0-0 a6 11. Nxd5 Bxd2+ 12. Rxd2 axb5 13. Nf6+ Kg7 14. Qg5 Rxa2 15. b4 Nxe5 16. Kb1 Ra4 17. Nh5+ Kg8 18. Nf6+ Kg7 1/2-1/2

[Event "Warsaw-ch33 sf02 email"]
[Site "ICCF email"]
[Date "2008.05.01"]
[Round "?"]
[White "Kurowski, Andrzej"]
[Black "Deren, Marcin"]
[Result "1-0"]
[ECO "D32"]
[WhiteElo "2026"]
[BlackElo "2074"]
[PlyCount "57"]
[EventDate "2008.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "POL"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 Nf6 3. Nc3 Nc6 4. e3 e6 5. d4 d5 6. cxd5 exd5 7. Be2 Bd6 8. dxc5 Bxc5 9. 0-0 0-0 10. b3 Be6 11. Bb2 h6 12. Rc1 Qe7 13. Nb5 Ne4 14. Nfd4 Rac8 15. Nxc6 bxc6 16. Nd4 Bd7 17. Ba6 Rc7 18. f3 Nf6 19. Re1 Re8 20. Qd2 Bb6 21. a4 Bc5 22. Bc3 Bb6 23. Nc2 Bc5 24. Rcd1 Bc8 25. Bd3 Rd8 26. b4 Bd6 27. Kh1 Be6 28. Nd4 Bd7 29. b5 1-0

[Event "POL-ch55 qf04 email"]
[Site "ICCF email"]
[Date "2008.05.01"]
[Round "?"]
[White "Polasik, Krzysztof"]
[Black "Deren, Marcin"]
[Result "0-1"]
[ECO "B40"]
[BlackElo "2074"]
[PlyCount "10"]
[EventDate "2008.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "POL"]
[SourceTitle "Corr 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.12"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 0-1

[Event "Warsaw-ch33 sf02 email"]
[Site "ICCF email"]
[Date "2008.05.01"]
[Round "?"]
[White "Rozumek, Krzysztof"]
[Black "Deren, Marcin"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "1859"]
[BlackElo "2074"]
[PlyCount "59"]
[EventDate "2008.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "POL"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]

1. h3 d5 2. c3 Nf6 3. d4 Nc6 4. Bf4 e6 5. e3 Bd6 6. Bxd6 cxd6 7. Nd2 0-0 8. Bd3 e5 9. Ne2 a5 10. a4 Be6 11. Ng3 Qb6 12. Qb3 Qxb3 13. Nxb3 g6 14. 0-0 Kg7 15. Bb5 e4 16. f3 exf3 17. Rxf3 h5 18. Rf4 Rh8 19. Raf1 Nd7 20. Nd2 f5 21. Ne2 Nf6 22. R4f3 h4 23. Nf4 Bg8 24. Nxg6 Kxg6 25. Rxf5 Rf8 26. Bd3 Kg7 27. Rg5+ Kf7 28. Rxd5 Ke7 29. Rb5 Rb8 30. e4 1-0

[Event "Warsaw-ch33 sf02 email"]
[Site "ICCF email"]
[Date "2008.05.01"]
[Round "?"]
[White "Szymanski, Robert"]
[Black "Deren, Marcin"]
[Result "1-0"]
[ECO "E91"]
[BlackElo "2074"]
[PlyCount "59"]
[EventDate "2008.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "POL"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 0-0 5. d4 d6 6. Be2 b6 7. 0-0 Bb7 8. Qc2 c5 9. d5 Nbd7 10. Bf4 Qc7 11. h3 a6 12. Rad1 Nh5 13. Be3 Rfe8 14. Qd2 Ra7 15. g4 Nhf6 16. Nh2 Qc8 17. g5 Nh5 18. a4 Ra8 19. Bxh5 gxh5 20. Qe2 e6 21. Qxh5 Ne5 22. Bf4 Nxc4 23. Ng4 Kh8 24. Nf6 Bxf6 25. gxf6 Rg8+ 26. Kh2 Rg6 27. Bh6 Qd7 28. Bg7+ Kg8 29. Rg1 Ne5 30. f4 1-0

[Event "IECC Swiss-516"]
[Site "IECC email"]
[Date "2008.04.16"]
[Round "?"]
[White "Wozniak, Zbigniew"]
[Black "Deren, Marcin"]
[Result "1/2-1/2"]
[ECO "B49"]
[WhiteElo "1862"]
[BlackElo "1604"]
[PlyCount "40"]
[EventDate "2008.??.??"]
[EventType "match (corr)"]
[SourceTitle "Corr 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.12"]
[SourceQuality "1"]
[WhiteTeam "US of America"]
[BlackTeam "Australia"]
[WhiteTeamCountry "USA"]
[BlackTeamCountry "AUS"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be2 a6 7. 0-0 Nf6 8. Be3 Bb4 9. Na4 0-0 10. Nxc6 bxc6 11. Nb6 Rb8 12. Nxc8 Rfxc8 13. Bxa6 Rd8 14. Bd3 Bd6 15. Kh1 Be5 16. c3 Rxb2 17. Qc1 Ng4 18. f4 Nxe3 19. Qxb2 Bxf4 20. Qf2 Nxf1 1/2-1/2

[Event "IECC Swiss-519.3"]
[Site "IECC email"]
[Date "2008.02.24"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Krunski, Jan Maria"]
[Result "1/2-1/2"]
[ECO "C45"]
[WhiteElo "1645"]
[BlackElo "1776"]
[PlyCount "57"]
[EventDate "2008.??.??"]
[EventType "tourn (corr)"]
[EventRounds "1"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]
[WhiteTeam "Poland"]
[BlackTeam "Poland"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Be3 Qf6 6. c3 Nge7 7. Bc4 Ne5 8. Nd2 0-0 9. 0-0 d6 10. Be2 Qh4 11. b4 Bb6 12. g3 Qh3 13. Nc4 Nxc4 14. Bxc4 Bg4 15. Qd3 Rad8 16. f3 Bc8 17. Rae1 d5 18. exd5 Nxd5 19. Bxd5 Rxd5 20. c4 Rh5 21. Rf2 c5 22. Nb5 Re5 23. Rd1 Qh5 24. bxc5 Bxc5 25. Bxc5 Rxc5 26. Nd6 Be6 27. Qe4 b6 28. Re2 Rc7 29. Red2 1/2-1/2

[Event "IECC Swiss-518.3"]
[Site "IECC email"]
[Date "2007.11.29"]
[Round "?"]
[White "Wingate, Matthew"]
[Black "Deren, Marcin"]
[Result "0-1"]
[ECO "A20"]
[WhiteElo "1491"]
[BlackElo "1635"]
[PlyCount "72"]
[EventDate "2007.??.??"]
[EventType "swiss (corr)"]
[EventRounds "1"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]
[WhiteTeam "England"]
[BlackTeam "Poland"]
[WhiteTeamCountry "ENG"]
[BlackTeamCountry "POL"]

1. c4 e5 2. g3 Nf6 3. Bg2 d5 4. cxd5 Nxd5 5. Nf3 Nc6 6. 0-0 e4 7. Ne1 Be7 8. Bxe4 Bh3 9. Bg2 Bxg2 10. Kxg2 h5 11. Nf3 h4 12. e4 Nf6 13. Nc3 h3+ 14. Kh1 Qd3 15. Qe2 Qxe2 16. Nxe2 Nxe4 17. d3 Nd6 18. Bd2 0-0-0 19. Bc3 Nf5 20. Rad1 b5 21. a3 Rhe8 22. Nf4 g5 23. Nh5 g4 24. Ne5 Nxe5 25. Bxe5 Bxa3 26. Bxc7 Kxc7 27. bxa3 Rd6 28. Rc1+ Kb6 29. Nf4 Nd4 30. Rb1 Re5 31. Rb2 a5 32. Rd1 Rc6 33. Kg1 Rc3 34. Ra2 Rec5 35. Raa1 Rc2 36. Kf1 Kc6 0-1

[Event "IECC KO-2095"]
[Site "IECC email"]
[Date "2007.10.08"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Manis, Ron"]
[Result "1-0"]
[ECO "A42"]
[WhiteElo "1577"]
[BlackElo "1535"]
[PlyCount "47"]
[EventDate "2007.??.??"]
[EventType "match (corr)"]
[EventRounds "2"]
[SourceTitle "Corr 2020"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]
[WhiteTeam "Poland"]
[BlackTeam "United States"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "USA"]

1. e4 g6 2. c4 Bg7 3. d4 d6 4. Nc3 Nd7 5. Nf3 e5 6. Bg5 f6 7. Be3 Ne7 8. Qd2 exd4 9. Nxd4 Ne5 10. 0-0-0 0-0 11. h3 Bd7 12. f4 Nf7 13. h4 h5 14. Be2 f5 15. Bf3 Qc8 16. Rhe1 c5 17. Ndb5 fxe4 18. Bxe4 Bg4 19. Nxd6 Nxd6 20. Qxd6 Bxd1 21. Rxd1 Nf5 22. Qxg6 Nxe3 23. Qh7+ Kf7 24. Bg6+ 1-0

[Event "IECC Swiss-530.1"]
[Site "IECC email"]
[Date "2007.10.08"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Perry, Hugh"]
[Result "1-0"]
[ECO "C61"]
[WhiteElo "1577"]
[BlackElo "898"]
[PlyCount "39"]
[EventDate "2007.??.??"]
[EventType "swiss (corr)"]
[EventRounds "1"]
[SourceTitle "Corr 2020"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]
[WhiteTeam "Poland"]
[BlackTeam "Australia"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "AUS"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 5. 0-0 Nf6 6. e5 Nd5 7. Qg4 c6 8. Qxd4 Be7 9. Bc4 d6 10. Bxd5 cxd5 11. exd6 Bf6 12. Qxd5 0-0 13. Nc3 Re8 14. Nb5 Be6 15. Qd3 a6 16. Nc7 Rc8 17. Nxe8 Qxe8 18. c3 Bc4 19. Qh3 Bxf1 20. d7 1-0

[Event "IECC KO-2095"]
[Site "IECC email"]
[Date "2007.10.08"]
[Round "?"]
[White "Manis, Ron"]
[Black "Deren, Marcin"]
[Result "0-1"]
[ECO "A07"]
[WhiteElo "1521"]
[BlackElo "1591"]
[PlyCount "48"]
[EventDate "2007.??.??"]
[EventType "match (corr)"]
[EventRounds "2"]
[SourceTitle "Corr 2020"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]
[WhiteTeam "United States"]
[BlackTeam "Poland"]
[WhiteTeamCountry "USA"]
[BlackTeamCountry "POL"]

1. g3 d5 2. Bg2 Nf6 3. d3 c6 4. Nf3 Bg4 5. Ne5 Bf5 6. f4 Nbd7 7. Nc3 d4 8. Nxd7 Qxd7 9. Ne4 0-0-0 10. e3 h5 11. Ng5 e6 12. exd4 h4 13. gxh4 Bd6 14. Bd2 Qc7 15. Qe2 Rxh4 16. Qf2 Rxf4 17. Bxf4 Bxf4 18. Nf3 Qa5+ 19. c3 Bxd3 20. Bf1 Bf5 21. Be2 g5 22. Bc4 Ne4 23. Qe2 g4 24. Nh4 Nxc3 0-1

[Event "IECC Swiss-516.3"]
[Site "IECC email"]
[Date "2007.09.25"]
[Round "?"]
[White "Obando, Daniel"]
[Black "Deren, Marcin"]
[Result "1/2-1/2"]
[ECO "B47"]
[WhiteElo "1880"]
[BlackElo "1669"]
[PlyCount "92"]
[EventDate "2007.??.??"]
[EventType "swiss (corr)"]
[EventRounds "1"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]
[WhiteTeam "Costa Rica"]
[BlackTeam "Poland"]
[WhiteTeamCountry "CRI"]
[BlackTeamCountry "POL"]

1. e4 c5 2. Nf3 e6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 Qc7 6. Be2 Nf6 7. Ndb5 Qb8 8. 0-0 a6 9. Nd4 b5 10. Be3 Bb7 11. f4 Bc5 12. Kh1 Nxd4 13. Bxd4 Qd6 14. Bxc5 Qxc5 15. e5 Ne4 16. Nxe4 Bxe4 17. Bd3 Bd5 18. Qg4 0-0 19. f5 exf5 20. Qxf5 g6 21. Qf4 Rae8 22. Rae1 Re7 23. Re2 Rfe8 24. Rfe1 b4 25. a4 bxa3 26. bxa3 a5 27. a4 Re6 28. h3 R8e7 29. Kh2 Qc3 30. Re3 Rb6 31. Qg5 Qc5 32. h4 Rb4 33. h5 Rxa4 34. hxg6 fxg6 35. Bxg6 hxg6 36. Rh3 Bxg2 37. Qxg6+ Rg7 38. Qe8+ Qf8 39. Rh8+ Kxh8 40. Qxf8+ Kh7 41. Qf6 Rag4 42. Kg1 R4g6 43. Qh4+ Rh6 44. Qd8 Rf7 45. Kxg2 Rg6+ 46. Kh3 Rh6+ 1/2-1/2

[Event "Champion's League 07/D6 email"]
[Site "ICCF email"]
[Date "2007.09.01"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Block, Wolfgang"]
[Result "1-0"]
[ECO "B32"]
[PlyCount "87"]
[EventDate "2007.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]
[WhiteTeam "BLACK DRAGON "]
[BlackTeam "The Underdogs III "]

1. e4 c5 2. Nf3 Nc6 3. d4 g6 4. d5 Na5 5. Nc3 Bg7 6. Be2 d6 7. 0-0 Nf6 8. e5 dxe5 9. Nxe5 0-0 10. Bf4 Qb6 11. Qd2 Qxb2 12. Rfb1 Qa3 13. Qe1 c4 14. Nb5 Qa4 15. c3 Qc2 16. Bf3 Qf5 17. g3 Ne8 18. Bg4 Qf6 19. Bxc8 Rxc8 20. Nd7 Qf5 21. Nxf8 Kxf8 22. Rd1 Rd8 23. Nxa7 g5 24. Be3 Bf6 25. Rab1 Qf3 26. Bc5 h6 27. Rb5 Nc6 28. Rxb7 Rxd5 29. Rxd5 Qxd5 30. Nxc6 Qxc5 31. Nb8 Kg7 32. Nd7 Qd5 33. Ra7 e6 34. a4 Nd6 35. Nxf6 Kxf6 36. Qe2 Nc8 37. Rc7 Nd6 38. Qg4 Nf5 39. Rxc4 h5 40. Qe2 h4 41. Rb4 Qc6 42. Qh5 hxg3 43. hxg3 Ne7 44. Rb5 1-0

[Event "Champion's League 07/D6 email"]
[Site "ICCF email"]
[Date "2007.09.01"]
[Round "?.4"]
[White "Deren, Marcin"]
[Black "Marti Blanes, Jose Manuel"]
[Result "1-0"]
[ECO "B52"]
[PlyCount "17"]
[EventDate "2007.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Nxd7 5. 0-0 Ngf6 6. Qe2 Qc7 7. c3 e6 8. d4 Be7 9. Na3 1-0

[Event "Champion's League 07/D6 email"]
[Site "ICCF email"]
[Date "2007.09.01"]
[Round "?.4"]
[White "Deren, Marcin"]
[Black "Paine, Kevin"]
[Result "1/2-1/2"]
[ECO "C30"]
[PlyCount "41"]
[EventDate "2007.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.12"]
[SourceQuality "1"]
[WhiteTeam "BLACK DRAGON "]
[BlackTeam "Scottish Claymores"]

1. e4 e5 2. f4 Bc5 3. Nf3 d6 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb6 7. e5 dxe5 8. fxe5 Nd5 9. Nc3 Be6 10. Bb5+ c6 11. Ba4 Nd7 12. 0-0 0-0 13. Bb3 f6 14. Nxd5 Bxd5 15. Bxd5+ cxd5 16. exf6 Nxf6 17. Ne5 Qd6 18. Be3 Rac8 19. Qb3 Ne4 20. Kh1 Qe6 21. Nd3 1/2-1/2

[Event "Champion's League 07/D6 email"]
[Site "ICCF email"]
[Date "2007.09.01"]
[Round "?.4"]
[White "Deren, Marcin"]
[Black "Pallett, Robert F"]
[Result "1/2-1/2"]
[ECO "B25"]
[BlackElo "2011"]
[PlyCount "80"]
[EventDate "2007.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.12"]
[SourceQuality "1"]
[WhiteTeam "BLACK DRAGON "]
[BlackTeam "The Hounds of SchemingMind B"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Nf3 Nf6 7. 0-0 0-0 8. Rb1 Be6 9. Re1 Rc8 10. a3 h6 11. e5 dxe5 12. Nxe5 Nxe5 13. Rxe5 Qd7 14. Re1 Rfd8 15. Bf4 b5 16. Qc1 b4 17. Ne4 Nxe4 18. Bxe4 g5 19. Be3 b3 20. c3 f5 21. Bg2 Bd5 22. Bxd5+ Qxd5 23. f4 g4 24. Rd1 Rd6 25. Qd2 h5 26. Qe2 Rh6 27. Qg2 Qd7 28. Rd2 h4 29. d4 Qe6 30. Bf2 cxd4 31. Re1 dxc3 32. Rxe6 cxd2 33. Qd5 d1Q+ 34. Qxd1 Rxe6 35. gxh4 Kh8 36. Qd7 Rcc6 37. Qe8+ Kh7 38. Qh5+ Kg8 39. Qe8+ Bf8 40. Bd4 Rc1+ 1/2-1/2

[Event "Champion's League 07/D6 bd04 email"]
[Site "ICCF email"]
[Date "2007.09.01"]
[Round "?.4"]
[White "Hauschild, Achim"]
[Black "Deren, Marcin"]
[Result "0-1"]
[ECO "B48"]
[WhiteElo "2000"]
[BlackElo "2074"]
[PlyCount "78"]
[EventDate "2007.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. Bd3 Nf6 8. 0-0 Bd6 9. Nxc6 dxc6 10. f4 e5 11. f5 b5 12. a4 b4 13. Nb1 0-0 14. Nd2 Qe7 15. a5 Bb7 16. Qe2 Rfd8 17. Nb3 c5 18. Bg5 h6 19. Bh4 Bb8 20. Kh1 Bd6 21. Bc4 Bc6 22. Rad1 Ra7 23. Qe3 Raa8 24. Rd3 Bb5 25. Bxb5 axb5 26. Bxf6 Qxf6 27. Nxc5 Bxc5 28. Qxc5 Rxd3 29. cxd3 Rxa5 30. Qxb4 Qb6 31. h3 Ra7 32. Rc1 Ra4 33. Qc5 Qxc5 34. Rxc5 Rb4 35. Rxe5 Rxb2 36. Re8+ Kh7 37. e5 Rf2 38. g4 Rd2 39. Re7 Kg8 0-1

[Event "Champion's League 07/D6 email"]
[Site "ICCF email"]
[Date "2007.09.01"]
[Round "?"]
[White "Haynes, Gordon"]
[Black "Deren, Marcin"]
[Result "0-1"]
[ECO "E11"]
[PlyCount "120"]
[EventDate "2007.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Bd2 Qe7 5. Bg2 Nc6 6. Nf3 Bxd2+ 7. Nbxd2 0-0 8. 0-0 d5 9. a3 Rd8 10. cxd5 exd5 11. e3 h6 12. Rc1 a5 13. Qc2 Bg4 14. h3 Bd7 15. Nb3 b6 16. Rfe1 Ra7 17. Nbd2 Re8 18. Nb1 Ne4 19. Qe2 Qd6 20. Nc3 Nxc3 21. Rxc3 a4 22. Rec1 Na5 23. Ne5 f6 24. Nxd7 Qxd7 25. Qc2 Re7 26. Qg6 Rf7 27. g4 c6 28. Qf5 b5 29. Rc5 Qxf5 30. gxf5 Nb3 31. Rxc6 Nxc1 32. Rxc1 Rac7 33. Rxc7 Rxc7 34. Bxd5+ Kf8 35. Be4 Ke7 36. Kg2 b4 37. axb4 Rc4 38. b5 Kd6 39. Kg3 Kc7 40. Kh4 Kb6 41. Kh5 Rb4 42. Kg6 Rxb2 43. Kxg7 Rxb5 44. Bd3 a3 45. Bc4 Rxf5 46. f4 Ka5 47. Kxh6 Rb5 48. d5 Kb4 49. Ba2 Kc5 50. d6 Kxd6 51. Kg6 Rb2 52. Bf7 Ke7 53. Bd5 Rh2 54. Kf5 Rxh3 55. Ke4 Rh2 56. Bc4 a2 57. Bxa2 Rxa2 58. Kf5 Ra5+ 59. Ke4 Ke6 60. Kf3 Ra3 0-1

[Event "Champion's League 07/D6 email"]
[Site "ICCF email"]
[Date "2007.09.01"]
[Round "?.4"]
[White "Hoppenthaler, Heinz"]
[Black "Deren, Marcin"]
[Result "1-0"]
[ECO "E65"]
[PlyCount "95"]
[EventDate "2007.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. d4 Bg7 4. Nf3 0-0 5. g3 d6 6. Bg2 Nbd7 7. 0-0 c5 8. b3 cxd4 9. Nxd4 Nc5 10. Bb2 Qb6 11. e3 Bd7 12. Qe2 e5 13. Nc2 Bg4 14. f3 Be6 15. Ba3 Rac8 16. Rad1 Rfd8 17. Rf2 Bh6 18. e4 Bd7 19. Bc1 Bxc1 20. Rxc1 a6 21. Ne3 Bc6 22. Rd1 Ne6 23. f4 exf4 24. gxf4 Nc5 25. Ncd5 Nxd5 26. Nxd5 Bxd5 27. Rxd5 a5 28. f5 a4 29. Qf3 Rf8 30. Qf4 axb3 31. axb3 Qxb3 32. Qh6 Qxc4 33. Bf1 Qxe4 34. Rxc5 Rxc5 35. f6 Rg5+ 36. Qxg5 Kh8 37. Bg2 Qb1+ 38. Rf1 Qb2 39. Qh6 Qd4+ 40. Kh1 Rg8 41. Bxb7 Qd3 42. Qf4 d5 43. Qf3 Qxf3+ 44. Rxf3 Rd8 45. Ra3 d4 46. Kg2 d3 47. Ra8 Rxa8 48. Bxa8 1-0

[Event "Champion's League 07/D6 bd04 email"]
[Site "ICCF email"]
[Date "2007.09.01"]
[Round "?.4"]
[White "Kolodziejski, Marcin"]
[Black "Deren, Marcin"]
[Result "1-0"]
[ECO "D38"]
[WhiteElo "1896"]
[BlackElo "2074"]
[PlyCount "97"]
[EventDate "2007.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Nc6 5. Bg5 Bb4 6. e3 h6 7. Bxf6 Qxf6 8. a3 Bxc3+ 9. bxc3 0-0 10. Nd2 Qg6 11. Rc1 dxc4 12. Qf3 Rb8 13. Bxc4 b5 14. Bb3 Bb7 15. Bc2 Qg5 16. Be4 Na5 17. Bxb7 Nxb7 18. 0-0 Qe7 19. c4 Na5 20. cxb5 Rxb5 21. Qg3 c6 22. Rc3 Rd8 23. Nf3 f6 24. Qg6 Rdb8 25. h3 Qf7 26. Qe4 Qd7 27. Rfc1 Qd5 28. Qd3 Nb3 29. Rd1 a6 30. Nh4 Kf7 31. Qg6+ Kg8 32. Qg4 Qd7 33. Ng6 Rg5 34. Qe4 Kf7 35. Nf4 e5 36. h4 Rg4 37. f3 Rxh4 38. g3 exf4 39. gxh4 fxe3 40. Qxe3 Na5 41. Kg2 Qd5 42. Qe2 Qb5 43. Qc2 Re8 44. Rdd3 Re7 45. Rc5 Qb6 46. Rd2 Re3 47. Qa4 Nb3 48. Qc4+ Ke7 49. Rb2 1-0

[Event "Champion's League 07/D6 email"]
[Site "ICCF email"]
[Date "2007.09.01"]
[Round "?"]
[White "Medeiros, Steve"]
[Black "Deren, Marcin"]
[Result "0-1"]
[ECO "E25"]
[PlyCount "106"]
[EventDate "2007.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. f3 d5 7. cxd5 exd5 8. e3 c4 9. Ne2 Nc6 10. g4 0-0 11. Ng3 Na5 12. Bg2 Nb3 13. Rb1 h6 14. 0-0 Bd7 15. Re1 Re8 16. e4 dxe4 17. Nxe4 Nxe4 18. fxe4 Qh4 19. h3 h5 20. Qe2 hxg4 21. hxg4 Bxg4 22. Qf2 Qh5 23. Bf4 Re6 24. e5 Bf5 25. Rb2 Rg6 26. Bg3 Re8 27. Rf1 Re7 28. Qxf5 Qxf5 29. Rxf5 Rxg3 30. Rf3 Rg6 31. Kf2 Ra6 32. Ra2 Nc1 33. Ra1 Nd3+ 34. Ke3 f6 35. Rf5 Rd6 36. Raf1 Rd8 37. Be4 fxe5 38. Kd2 Nf4 39. Kc2 Ne2 40. Rxe5 Rxe5 41. dxe5 Ng3 42. Re1 Nxe4 43. Rxe4 Rc8 44. e6 b6 45. a4 g5 46. Re5 Rc5 47. Re4 Kf8 48. Kd2 Ke7 49. Ke3 Rd5 50. Ke2 Ra5 51. Rxc4 Kxe6 52. Rg4 Re5+ 53. Kd3 Kf5 0-1

[Event "IECC Swiss-519.2"]
[Site "IECC email"]
[Date "2007.08.07"]
[Round "?"]
[White "Soukupova, Petra"]
[Black "Deren, Marcin"]
[Result "0-1"]
[ECO "B40"]
[WhiteElo "1473"]
[BlackElo "1563"]
[PlyCount "18"]
[EventDate "2007.??.??"]
[EventType "swiss (corr)"]
[EventRounds "1"]
[SourceTitle "Corr 2020"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]
[WhiteTeam "Czech Republic"]
[BlackTeam "Poland"]
[WhiteTeamCountry "CZE"]
[BlackTeamCountry "POL"]

1. e4 c5 2. Nc3 e6 3. d3 Nc6 4. Nf3 d5 5. exd5 exd5 6. Be2 Nf6 7. Bg5 Be7 8. d4 cxd4 9. Nxd4 0-0 0-1

[Event "IECC Swiss-518.2"]
[Site "IECC email"]
[Date "2007.05.21"]
[Round "?"]
[White "Von Rosenberg, Clemens"]
[Black "Deren, Marcin"]
[Result "1/2-1/2"]
[ECO "B30"]
[WhiteElo "1702"]
[BlackElo "1518"]
[PlyCount "15"]
[EventDate "2007.??.??"]
[EventType "swiss (corr)"]
[EventRounds "1"]
[SourceTitle "Corr 2020"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]
[WhiteTeam "Germany"]
[BlackTeam "Poland"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "POL"]

1. e4 c5 2. Nc3 e6 3. Bc4 Nc6 4. d3 Nf6 5. Nf3 d5 6. Bb5 d4 7. Bxc6+ bxc6 8. Ne2 1/2-1/2

[Event "IECC KO-2084"]
[Site "IECC email"]
[Date "2007.05.15"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Von Rosenberg, Clemens"]
[Result "0-1"]
[ECO "B84"]
[WhiteElo "1526"]
[BlackElo "1694"]
[PlyCount "20"]
[EventDate "2006.??.??"]
[EventType "match (corr)"]
[EventRounds "2"]
[SourceTitle "Corr 2020"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]
[WhiteTeam "Poland"]
[BlackTeam "Germany"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "GER"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Be2 a6 7. 0-0 Be7 8. Qd3 b5 9. Bf3 Nfd7 10. Nc6 Nxc6 0-1

[Event "IECC KO-2084"]
[Site "IECC email"]
[Date "2007.05.15"]
[Round "?"]
[White "Von Rosenberg, Clemens"]
[Black "Deren, Marcin"]
[Result "0-1"]
[ECO "B25"]
[WhiteElo "1829"]
[BlackElo "1530"]
[PlyCount "74"]
[EventDate "2006.??.??"]
[EventType "match (corr)"]
[EventRounds "2"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]
[WhiteTeam "US of America"]
[BlackTeam "South Africa"]
[WhiteTeamCountry "USA"]
[BlackTeamCountry "RSA"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 Nf6 6. Nge2 d6 7. 0-0 0-0 8. Bg5 Qb6 9. b3 Bg4 10. h3 Bd7 11. Qd2 Qa5 12. a3 Qd8 13. Nd5 Re8 14. Nxf6+ exf6 15. Bh6 Bxh6 16. Qxh6 Nd4 17. Nxd4 cxd4 18. Ra2 Rc8 19. f4 Qe7 20. f5 Rc3 21. fxg6 fxg6 22. h4 Rf8 23. h5 g5 24. Kh2 Qg7 25. Qxg7+ Kxg7 26. Bf3 g4 27. Bd1 Kh6 28. a4 Rc5 29. a5 Rxh5+ 30. Kg2 Kg5 31. b4 f5 32. a6 b6 33. Rf4 Rf6 34. Ra1 Rfh6 35. Kf1 Rh1+ 36. Ke2 R6h2+ 37. Rf2 fxe4 0-1

[Event "IECC Swiss-516.2"]
[Site "IECC email"]
[Date "2007.03.09"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Coyne, David W"]
[Result "1/2-1/2"]
[ECO "C19"]
[WhiteElo "1517"]
[BlackElo "1976"]
[PlyCount "65"]
[EventDate "2007.??.??"]
[EventType "swiss (corr)"]
[EventRounds "1"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]
[WhiteTeam "Netherlands"]
[BlackTeam "Poland"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "POL"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Qc7 7. Nf3 b6 8. Bb5+ Bd7 9. a4 Ne7 10. 0-0 Nbc6 11. Ba3 Na5 12. Qd3 Rb8 13. dxc5 bxc5 14. Rfb1 0-0 15. Ng5 Ng6 16. h4 Rfc8 17. h5 Nf8 18. Bxc5 Qxc5 19. Bxd7 Rxb1+ 20. Rxb1 Rd8 21. Bb5 Rb8 22. Re1 h6 23. Nf3 Rc8 24. Ba6 Rc7 25. Nd4 Nd7 26. Bb5 Nb6 27. Rb1 Qxc3 28. f4 Qc5 29. Kh2 Nac4 30. Kh3 Qe7 31. Kg4 Nd7 32. Qe2 Rb7 33. Rb3 1/2-1/2

[Event "W-ch WS/O/109 email"]
[Site "ICCF email"]
[Date "2007.03.03"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Barzaghi, Andy"]
[Result "1-0"]
[ECO "B32"]
[PlyCount "23"]
[EventDate "2007.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 a6 6. Nd6+ Bxd6 7. Qxd6 Qh4 8. Nc3 Nf6 9. g3 Qg4 10. Bg2 Nd4 11. Qxe5+ Kf8 12. Qxd4 1-0

[Event "W-ch WS/O/109 email"]
[Site "ICCF email"]
[Date "2007.03.03"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Kyhos, Alois"]
[Result "0-1"]
[ECO "C83"]
[BlackElo "1701"]
[PlyCount "136"]
[EventDate "2007.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[SourceTitle "Corr 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.19"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.19"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Be7 10. Nbd2 0-0 11. Bc2 f5 12. exf6 Nxf6 13. Qe2 Qd7 14. a4 b4 15. Re1 Bf5 16. Bxf5 Qxf5 17. Nf1 Bd6 18. Ng3 Bxg3 19. hxg3 Rfe8 20. Be3 bxc3 21. bxc3 Na5 22. Nd4 Qd7 23. Qd3 c5 24. Nf3 c4 25. Qc2 Nb3 26. Rad1 Qxa4 27. Qf5 Qc6 28. Nd4 Qc8 29. Qg5 Qg4 30. Qxg4 Nxg4 31. Nc2 Nf6 32. f3 a5 33. g4 h6 34. g5 hxg5 35. Bxg5 Rxe1+ 36. Rxe1 a4 37. Na3 Kf7 38. Be3 Rb8 39. Nc2 Re8 40. Kf2 Ra8 41. Na3 Nd7 42. Rd1 Ra5 43. Ke2 Ke6 44. Rh1 Ra8 45. Rh7 Rg8 46. g4 Ne5 47. Nb5 Rb8 48. Na3 Na1 49. Rxg7 Rb2+ 50. Kd1 Rb3 51. f4 Rxa3 52. Bc5 Rxc3 53. Re7+ Kf6 54. fxe5+ Kg6 55. Rc7 Nb3 56. Bd6 Kg5 57. e6 Rd3+ 58. Kc2 Nd4+ 59. Kc1 Nxe6 60. Ra7 Nd4 61. Be5 Kxg4 62. Bxd4 Rxd4 63. Rxa4 Kf3 64. Ra8 Rh4 65. Kc2 d4 66. Rf8+ Ke4 67. Re8+ Kd5 68. Rd8+ Ke5 0-1

[Event "W-ch WS/O/109 email"]
[Site "ICCF email"]
[Date "2007.03.03"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Poetz, Florian"]
[Result "0-1"]
[ECO "B33"]
[PlyCount "92"]
[EventDate "2007.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Bxf6 gxf6 10. Nd5 f5 11. Bd3 Be6 12. 0-0 Bxd5 13. exd5 Ne7 14. Nxb5 Bg7 15. Nc3 e4 16. Be2 0-0 17. Qd2 Ng6 18. a4 Re8 19. Ra3 f4 20. Rb3 f3 21. gxf3 Qh4 22. Nxe4 Bh6 23. Qd1 Nf4 24. Kh1 Nxe2 25. Qxe2 Bf4 26. Rg1+ Kh8 27. Rg2 f5 28. Nxd6 Bxd6 29. Re3 Rg8 30. Qd3 Rxg2 31. Kxg2 Bc5 32. Qxf5 Bxe3 33. Qe5+ Kg8 34. fxe3 Kf7 35. Qf5+ Kg7 36. Qe5+ Qf6 37. Qe4 Qg6+ 38. Qxg6+ hxg6 39. e4 Kf6 40. b3 Rc8 41. c4 Rb8 42. c5 Rxb3 43. f4 Re3 44. e5+ Kf7 45. Kf2 Rc3 46. c6 Rc5 0-1

[Event "W-ch WS/O/109 email"]
[Site "ICCF email"]
[Date "2007.03.03"]
[Round "?"]
[White "Kaspschak, Karola"]
[Black "Deren, Marcin"]
[Result "0-1"]
[ECO "B46"]
[PlyCount "38"]
[EventDate "2007.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. d4 cxd4 5. Nxd4 Nc6 6. Bd2 Nxd4 7. Bc4 Qc7 8. b3 Nf6 9. 0-0 b5 10. Bd3 Bb7 11. Ne2 Bc5 12. b4 Bb6 13. c3 Nc6 14. Bg5 Ne5 15. Bxf6 gxf6 16. Ng3 Qxc3 17. Bc2 Rc8 18. Rc1 Qxb4 19. Rb1 Qe7 0-1

[Event "W-ch WS/O/109 email"]
[Site "ICCF email"]
[Date "2007.03.03"]
[Round "?"]
[White "Owens, Steve"]
[Black "Deren, Marcin"]
[Result "1/2-1/2"]
[ECO "E16"]
[PlyCount "51"]
[EventDate "2007.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Bb4+ 6. Bd2 Qe7 7. 0-0 Bxd2 8. Qxd2 Nc6 9. Nc3 Na5 10. b3 0-0 11. Rfe1 Ne4 12. Nxe4 Bxe4 13. Qf4 Bxf3 14. Bxf3 Rac8 15. Rad1 Nc6 16. Bg2 h6 17. e3 Rfe8 18. Be4 Nb4 19. a3 Nc6 20. b4 a5 21. Bxc6 dxc6 22. bxa5 bxa5 23. c5 Qd7 24. Rb1 Rb8 25. Qe4 Qd5 26. Qxd5 1/2-1/2

[Event "W-ch WS/O/109 email"]
[Site "ICCF email"]
[Date "2007.03.03"]
[Round "?"]
[White "Thomas, Gerald K"]
[Black "Deren, Marcin"]
[Result "1/2-1/2"]
[ECO "B49"]
[PlyCount "52"]
[EventDate "2007.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. Be2 Nf6 8. 0-0 b5 9. Nxc6 dxc6 10. f4 Bb7 11. e5 Nd5 12. Nxd5 cxd5 13. c3 Bc5 14. Bxc5 Qxc5+ 15. Qd4 Qxd4+ 16. cxd4 g6 17. g4 Kd7 18. Kf2 Rac8 19. Rac1 Rxc1 20. Rxc1 Rc8 21. Rxc8 Bxc8 22. g5 b4 23. h4 Kc6 24. Ke3 Kb6 25. b3 Bd7 26. Kd2 Bc6 1/2-1/2

[Event "POL-ch WS/Q-001 email"]
[Site "ICCF email"]
[Date "2006.12.15"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Knap, Jerzy"]
[Result "1/2-1/2"]
[ECO "B18"]
[BlackElo "2097"]
[PlyCount "37"]
[EventDate "2006.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[EventCountry "POL"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. N1e2 e6 7. Nf4 Bd6 8. h4 Qc7 9. Nxg6 hxg6 10. Qf3 Nf6 11. Bg5 Qa5+ 12. Bd2 Qd5 13. Qxd5 cxd5 14. Bd3 Nc6 15. c3 a6 16. Bg5 Kd7 17. Rd1 Rae8 18. Bc2 Kc7 19. Rh3 1/2-1/2

[Event "POL-ch WS/Q-001 email"]
[Site "ICCF email"]
[Date "2006.12.15"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Kobryn, Jozef"]
[Result "1/2-1/2"]
[ECO "B98"]
[BlackElo "1607"]
[PlyCount "126"]
[EventDate "2006.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[EventCountry "POL"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Qc7 8. Be2 Be7 9. 0-0 h6 10. Bh4 Nxe4 11. Bxe7 Nxc3 12. Bxd6 Qxd6 13. bxc3 0-0 14. Qd3 Rd8 15. Rad1 Qc5 16. Qc4 Qxc4 17. Bxc4 Rd7 18. f5 e5 19. Nf3 Nc6 20. Bd5 Kf8 21. Rd3 Ne7 22. Be4 f6 23. g4 Rc7 24. Rb1 Kf7 25. Nd2 h5 26. h3 hxg4 27. hxg4 g6 28. fxg6+ Nxg6 29. Rd8 Kg7 30. Bxb7 Rxb7 31. Rxb7+ Bxb7 32. Rd7+ Kh6 33. Rxb7 Kg5 34. Rg7 f5 35. gxf5 Kxf5 36. Kf2 Nf4 37. Rf7+ Ke6 38. Rh7 Nd5 39. Rh6+ Kf5 40. Rh5+ Kf4 41. Rh4+ Kf5 42. Ne4 Kg6 43. Rh3 Rf8+ 44. Rf3 Nf4 45. c4 Kf5 46. Ke3 Rb8 47. Rf2 Rb2 48. c3 Rb6 49. Kf3 Rb1 50. Ng3+ Ke6 51. Rh2 Rc1 52. Rh6+ Kd7 53. Ne4 Rf1+ 54. Kg4 Nd3 55. Kg3 Re1 56. Kf3 Kc7 57. Rxa6 Nb2 58. Ra5 Nd1 59. Rxe5 Nxc3 60. a3 Nxe4 61. Rxe4 Ra1 62. Ke3 Rxa3+ 63. Kd4 Ra5 1/2-1/2

[Event "POL-ch WS/Q-001 email"]
[Site "ICCF email"]
[Date "2006.12.15"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Kowalczyk, Ryszard"]
[Result "1/2-1/2"]
[ECO "B30"]
[PlyCount "169"]
[EventDate "2006.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[EventCountry "POL"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 Nf6 4. Nc3 e5 5. Bxc6 dxc6 6. Nxe5 Bd6 7. Nc4 Bc7 8. d3 b5 9. Ne3 0-0 10. 0-0 c4 11. a3 cxd3 12. cxd3 Re8 13. f4 Bb6 14. Kh1 Be6 15. e5 Nd5 16. d4 f6 17. Nexd5 Bxd5 18. Be3 Rf8 19. Qg4 Bc4 20. Rfd1 Bb3 21. Rd2 Qc7 22. Qg3 Ba5 23. Rf2 Bxc3 24. bxc3 Rae8 25. Kg1 Qd7 26. f5 fxe5 27. f6 exd4 28. Bxd4 a5 29. Rf5 g6 30. Rg5 Qf7 31. h4 Re2 32. h5 Bc2 33. a4 Be4 34. Qd6 Ra8 35. axb5 cxb5 36. Rxa5 Rxa5 37. Qd8+ Qf8 38. Qxa5 Qb8 39. Qa6 Bd3 40. Rg3 Re1+ 41. Kh2 Kf7 42. Qc6 Bf5 43. Qd5+ Be6 44. Qg5 Bf5 45. Qh6 Qg8 46. Rf3 Re4 47. Kg1 b4 48. hxg6+ hxg6 49. Qh2 Qd8 50. Qh7+ Ke6 51. Qa7 b3 52. Qa4 b2 53. Qa2+ Qd5 54. Qxb2 Kf7 55. Qb8 Re1+ 56. Kf2 Rb1 57. Qh8 Rb2+ 58. Kg1 Rb1+ 59. Rf1 Rxf1+ 60. Kxf1 Bd3+ 61. Kg1 Qe6 62. Qg7+ Ke8 63. Qh7 Qe1+ 64. Kh2 Qe6 65. Qh8+ Kf7 66. Qg7+ Ke8 67. Qc7 Bf5 68. c4 Qd7 69. Qf4 Be6 70. c5 Qd5 71. Qe3 Qh5+ 72. Kg1 Qd5 73. Qf4 Bd7 74. f7+ Qxf7 75. Qb8+ Ke7 76. Qd6+ Ke8 77. c6 Bc8 78. Bc5 Qg7 79. Bb4 g5 80. c7 Qa1+ 81. Kf2 Qa2+ 82. Kg3 Qe6 83. Qd4 Kf7 84. Qc5 Bb7 85. Kh2 1/2-1/2

[Event "POL-ch WS/Q-001 email"]
[Site "ICCF email"]
[Date "2006.12.15"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Makosiej, Wladyslaw"]
[Result "1-0"]
[ECO "C18"]
[PlyCount "25"]
[EventDate "2006.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[EventCountry "POL"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Qa5 7. Bd2 Qa4 8. Qb1 c4 9. Be2 Ne7 10. Nh3 Nbc6 11. 0-0 0-0 12. Qc1 Ng6 13. Nf4 1-0

[Event "POL-ch WS/Q-001 email"]
[Site "ICCF email"]
[Date "2006.12.15"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Nowak, Andrzej"]
[Result "1-0"]
[ECO "C18"]
[PlyCount "81"]
[EventDate "2006.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[EventCountry "POL"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Qg4 Qc7 8. Qxg7 Rg8 9. Qxh7 cxd4 10. Ne2 Nbc6 11. f4 Bd7 12. Qd3 dxc3 13. g3 d4 14. Rb1 Nf5 15. Bg2 0-0-0 16. Be4 Be8 17. 0-0 f6 18. Qc4 Qf7 19. a4 Rh8 20. a5 Rd5 21. Bxd5 exd5 22. Qc5 Qe6 23. Qb5 Rh7 24. Qd3 Bh5 25. a6 b6 26. Ba3 Bg4 27. Qb5 Rh8 28. Bd6 Qd7 29. Rf2 Nxd6 30. exd6 Re8 31. f5 Re5 32. Nf4 Qxd6 33. Rbf1 Kb8 34. Nd3 Re3 35. Rb1 Kc7 36. Nf4 Re5 37. Ne6+ Kc8 38. Qf1 Bxf5 39. Rxf5 Rxe6 40. Rh5 Kc7 41. Rd1 1-0

[Event "POL-ch WS/Q-001 email"]
[Site "ICCF email"]
[Date "2006.12.15"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Pazderski, Ludwik"]
[Result "1/2-1/2"]
[ECO "B95"]
[BlackElo "1991"]
[PlyCount "107"]
[EventDate "2006.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[EventCountry "POL"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. Be2 Be7 8. 0-0 0-0 9. Qd3 Nbd7 10. Qg3 Kh8 11. Rad1 Qc7 12. f4 b5 13. a3 Bb7 14. Bf3 Rad8 15. e5 dxe5 16. fxe5 Bxf3 17. exf6 Qxg3 18. hxg3 gxf6 19. Rxf3 fxg5 20. Nc6 Bc5+ 21. Kf1 Rc8 22. Rxd7 Rxc6 23. Ne4 h6 24. Rc3 Rfc8 25. Rxf7 Bd4 26. Rxc6 Rxc6 27. c3 Bg7 28. Ke2 Kh7 29. g4 Kg6 30. Ra7 Bf8 31. Ra8 Kf7 32. b4 Kg7 33. Kd2 Be7 34. Ra7 Kf8 35. Ke3 Ke8 36. Kd4 Rc4+ 37. Ke5 Rc6 38. Nf6+ Bxf6+ 39. Kxf6 Rxc3 40. Rxa6 Kd7 41. Rxe6 Rxa3 42. Kf5 Rb3 43. Rxh6 Rxb4 44. Kxg5 Rb2 45. Rh3 Rxg2 46. Kf5 Kd6 47. g5 Kd5 48. g6 b4 49. Kf6 Rf2+ 50. Ke7 Re2+ 51. Kf7 Rf2+ 52. Kg8 Rg2 53. g7 Kc4 54. Rh4+ 1/2-1/2

[Event "POL-ch WS/Q-001 email"]
[Site "ICCF email"]
[Date "2006.12.15"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Sodomski, Andrzej"]
[Result "1/2-1/2"]
[ECO "C42"]
[BlackElo "1808"]
[PlyCount "123"]
[EventDate "2006.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[EventCountry "POL"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. 0-0 0-0 8. Re1 f5 9. c4 Be6 10. cxd5 Bxd5 11. Nc3 Nxc3 12. bxc3 Nc6 13. Bf4 Bd6 14. Bd2 b6 15. Ng5 Qf6 16. Qe2 h6 17. Bc4 Ne7 18. Bxd5+ Nxd5 19. Qc4 hxg5 20. Qxd5+ Kh7 21. Re6 Qd8 22. g3 Rb8 23. Qb5 g4 24. Rae1 Qc8 25. Bg5 Rf7 26. a4 Qb7 27. Qb3 Rbf8 28. d5 Qc8 29. Qb5 a6 30. Qc4 Kg8 31. Be3 Qb7 32. Bd4 Rd8 33. Qb3 Qc8 34. c4 Qd7 35. R1e2 a5 36. Qc2 Rdf8 37. Rg6 Be7 38. Ree6 Bf6 39. Be3 Be7 40. Bh6 Bc5 41. Qc1 Bd4 42. Qd2 Bc5 43. Qc2 Kh8 44. Qc1 Kg8 45. Kg2 Bd4 46. Qd2 Bc5 47. Qb2 Kh7 48. Rc6 Bd6 49. Rgxd6 cxd6 50. Bf4 Qe8 51. Qd4 Re7 52. Be3 Re4 53. Qxb6 Qe5 54. Qb3 Re8 55. Qd3 Kg8 56. c5 Rxe3 57. fxe3 Qb2+ 58. Kf1 Qc1+ 59. Kf2 dxc5 60. d6 Rb8 61. d7 Rb2+ 62. Qe2 1/2-1/2

[Event "POL-ch WS/Q-001 email"]
[Site "ICCF email"]
[Date "2006.12.15"]
[Round "?"]
[White "Knap, Jerzy"]
[Black "Deren, Marcin"]
[Result "1/2-1/2"]
[ECO "E33"]
[WhiteElo "2097"]
[PlyCount "32"]
[EventDate "2006.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[EventCountry "POL"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d6 6. Bd2 0-0 7. e3 e5 8. d5 Ne7 9. Bd3 c6 10. dxc6 bxc6 11. 0-0 Bg4 12. Ne4 Nxe4 13. Bxb4 Bxf3 14. gxf3 Ng5 15. Kh1 Rb8 16. Bc3 Ng6 1/2-1/2

[Event "POL-ch WS/Q-001 email"]
[Site "ICCF email"]
[Date "2006.12.15"]
[Round "?"]
[White "Kobryn, Jozef"]
[Black "Deren, Marcin"]
[Result "0-1"]
[ECO "E33"]
[WhiteElo "1607"]
[PlyCount "110"]
[EventDate "2006.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[EventCountry "POL"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 0-0 6. e4 d6 7. a3 Bxc3+ 8. bxc3 e5 9. Be3 Bg4 10. Nd2 Bd7 11. Bd3 Ng4 12. 0-0 Nxe3 13. fxe3 Qg5 14. Rf3 h5 15. Be2 h4 16. Qd3 b6 17. Rf2 h3 18. g3 Rae8 19. Raf1 Qg6 20. Bf3 a6 21. Be2 Re7 22. Bf3 Na5 23. Rb1 Rd8 24. Rbf1 Qg5 25. Bh1 b5 26. cxb5 axb5 27. Rd1 Qh6 28. Bf3 Rb8 29. Rb1 Rb6 30. Ra1 Qg6 31. c4 bxc4 32. Qc3 Ra6 33. Nxc4 Nxc4 34. Qxc4 Rc6 35. Qe2 Qg5 36. Qd2 Rc4 37. d5 Re8 38. Rc1 Rxc1+ 39. Qxc1 Rb8 40. Be2 Rb7 41. Ba6 Ra7 42. Be2 Qd8 43. Bf1 g6 44. Rc2 Bg4 45. Ra2 Qb8 46. Bd3 Qb3 47. Bc4 Qa4 48. Kf2 c5 49. Bd3 Kg7 50. Qc3 Qd1 51. Bf1 Rb7 52. Rd2 Qf3+ 53. Kg1 Rb1 54. Rf2 Rxf1+ 55. Kxf1 Qh1# 0-1

[Event "POL-ch WS/Q-001 email"]
[Site "ICCF email"]
[Date "2006.12.15"]
[Round "?"]
[White "Kowalczyk, Ryszard"]
[Black "Deren, Marcin"]
[Result "1/2-1/2"]
[ECO "C47"]
[PlyCount "101"]
[EventDate "2006.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[EventCountry "POL"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 5. Nxd4 Bb4 6. Nxc6 bxc6 7. Bd3 0-0 8. 0-0 d5 9. exd5 cxd5 10. Bg5 c6 11. Re1 h6 12. Bh4 Be6 13. a3 Be7 14. Ne2 Qb6 15. Nd4 Bg4 16. Be2 Bd7 17. b4 Rfe8 18. c4 a5 19. c5 Qb7 20. b5 cxb5 21. Rc1 Rac8 22. c6 Rxc6 23. Nxc6 Bxc6 24. Qc2 Bd7 25. Qd3 b4 26. Bf3 g5 27. Bg3 bxa3 28. Be5 Qb5 29. Qd4 Ne4 30. Bxe4 dxe4 31. Rxe4 a2 32. Bh8 Bf8 33. Rxe8 Bxe8 34. h4 gxh4 35. Bf6 Qb1 36. Qa1 Qg6 37. Bxh4 Bc6 38. f3 Qe6 39. Bf6 Ba3 40. Rd1 Bc5+ 41. Bd4 Bb4 42. Qb2 Bd5 43. Qf2 Qd6 44. Qh4 f5 45. Ba1 Bc5+ 46. Kh1 Kh7 47. Rc1 Bf7 48. Rxc5 Qxc5 49. Qf6 Qf8 50. Qxf5+ Kg8 51. Qg4+ 1/2-1/2

[Event "POL-ch WS/Q-001 email"]
[Site "ICCF email"]
[Date "2006.12.15"]
[Round "?"]
[White "Makosiej, Wladyslaw"]
[Black "Deren, Marcin"]
[Result "0-1"]
[ECO "E48"]
[PlyCount "26"]
[EventDate "2006.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[EventCountry "POL"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 0-0 5. Bd3 d5 6. cxd5 exd5 7. Nge2 Re8 8. 0-0 Bd6 9. Qc2 a6 10. Bd2 Nc6 11. a3 g6 12. e4 dxe4 13. Nxe4 Nxe4 0-1

[Event "POL-ch WS/Q-001 email"]
[Site "ICCF email"]
[Date "2006.12.15"]
[Round "?"]
[White "Nowak, Andrzej"]
[Black "Deren, Marcin"]
[Result "1/2-1/2"]
[ECO "E81"]
[PlyCount "67"]
[EventDate "2006.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[EventCountry "POL"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. d4 Bg7 4. e4 d6 5. f3 0-0 6. Be3 c5 7. Nge2 Nbd7 8. d5 Qb6 9. Qc2 Ne5 10. Ng3 h5 11. b3 h4 12. Nge2 a6 13. Bg5 Qa5 14. Bd2 Qc7 15. f4 Neg4 16. h3 Nh6 17. g4 hxg3 18. Nxg3 Bd7 19. 0-0-0 Rab8 20. Re1 b5 21. e5 dxe5 22. fxe5 Ne8 23. Bf4 Nf5 24. Nxf5 Bxf5 25. Qd2 Qa5 26. Ne4 Qa3+ 27. Kb1 f6 28. e6 Rb6 29. h4 g5 30. Bh2 Nd6 31. Bxd6 Rxd6 32. Bd3 bxc4 33. Bxc4 Qb4 34. Qxb4 1/2-1/2

[Event "POL-ch WS/Q-001 email"]
[Site "ICCF email"]
[Date "2006.12.15"]
[Round "?"]
[White "Pazderski, Ludwik"]
[Black "Deren, Marcin"]
[Result "1/2-1/2"]
[ECO "B81"]
[WhiteElo "1991"]
[PlyCount "69"]
[EventDate "2006.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[EventCountry "POL"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be3 a6 7. g4 e5 8. Nf5 g6 9. g5 gxf5 10. exf5 d5 11. gxf6 d4 12. Bc4 Qc7 13. Qe2 dxc3 14. 0-0-0 Bxf5 15. Rhg1 Nd7 16. Rg5 Bg6 17. f4 cxb2+ 18. Kb1 b5 19. Bb3 0-0-0 20. f5 Bh6 21. fxg6 hxg6 22. Rg3 Bxe3 23. Rxe3 Nxf6 24. Rxd8+ Rxd8 25. Qf3 Qb6 26. Rxe5 Rd7 27. Re1 Kb8 28. Rf1 Rd6 29. Bxf7 Qd4 30. Re1 Nd7 31. Bb3 Kc7 32. Qe3 Qxe3 33. Rxe3 Rd2 34. h3 Nc5 35. Rg3 1/2-1/2

[Event "POL-ch WS/Q-001 email"]
[Site "ICCF email"]
[Date "2006.12.15"]
[Round "?"]
[White "Sodomski, Andrzej"]
[Black "Deren, Marcin"]
[Result "0-1"]
[ECO "B47"]
[WhiteElo "1808"]
[PlyCount "80"]
[EventDate "2006.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[EventCountry "POL"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Ndb5 Qb8 7. Be3 Nf6 8. f4 a6 9. e5 axb5 10. exf6 b4 11. Nb5 b6 12. fxg7 Bxg7 13. Nd6+ Ke7 14. Nc4 d5 15. Nxb6 Ra5 16. Nxc8+ Rxc8 17. Qb1 Bd4 18. Bd2 Qa7 19. Kd1 Be3 20. Qc1 Bxd2 21. Qxd2 Rxa2 22. Rb1 Qb6 23. Bd3 b3 24. c3 d4 25. c4 Nb4 26. Rf1 Ra4 27. Rc1 Nc2 28. f5 Ne3+ 29. Ke1 exf5 30. Rf3 Qh6 31. Kf2 Rg8 32. Bf1 Ng4+ 33. Ke1 Qe6+ 34. Qe2 Rga8 35. Rxb3 Ra1 36. Kd2 Rxc1 37. Kxc1 Ra1+ 38. Kc2 Ne3+ 39. Rxe3 dxe3 40. Qd3 Qe4 0-1

[Event "IECC Swiss-519.1"]
[Site "IECC email"]
[Date "2006.12.02"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Eilering, David L"]
[Result "1-0"]
[ECO "B18"]
[WhiteElo "1501"]
[BlackElo "1388"]
[PlyCount "37"]
[EventDate "2006.??.??"]
[EventType "swiss (corr)"]
[EventRounds "1"]
[SourceTitle "Corr 2008"]
[Source "ChessBase"]
[SourceDate "2008.06.24"]
[SourceVersion "1"]
[SourceVersionDate "2008.06.24"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. N1e2 Nf6 7. h4 h6 8. Nf4 Bh7 9. Bc4 e5 10. dxe5 Qa5+ 11. Qd2 Qxe5+ 12. Kd1 Qc5 13. Re1+ Be7 14. Bd3 0-0 15. Bxh7+ Nxh7 16. Nd3 Qd6 17. Nf5 Qd7 18. Nxe7+ Kh8 19. Ne5 1-0

[Event "IECC KO-2084"]
[Site "IECC email"]
[Date "2006.11.26"]
[Round "?"]
[White "Copin, Jean Christophe"]
[Black "Deren, Marcin"]
[Result "0-1"]
[ECO "B44"]
[WhiteElo "1162"]
[BlackElo "1511"]
[PlyCount "60"]
[EventDate "2006.??.??"]
[EventType "match (corr)"]
[EventRounds "2"]
[SourceTitle "Corr 2008"]
[Source "ChessBase"]
[SourceDate "2008.06.24"]
[SourceVersion "1"]
[SourceVersionDate "2008.06.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Be3 Nf6 6. f3 Qb6 7. b3 Bc5 8. c3 e5 9. Nf5 Bxe3 10. Nd6+ Kf8 11. Qc2 Nb4 12. cxb4 Qxd6 13. Qc4 Qd4 14. Qc3 Qxc3+ 15. Nxc3 Bd4 16. Rc1 Ke7 17. Bc4 d6 18. a4 Bd7 19. a5 Rab8 20. Nb5 d5 21. Nxd4 dxc4 22. Nf5+ Bxf5 23. exf5 cxb3 24. Rb1 Rbc8 25. 0-0 Rc3 26. Rfe1 e4 27. fxe4 g6 28. e5 Nd5 29. e6 f6 30. Rb2 Rhc8 0-1

[Event "IECC KO-2084"]
[Site "IECC email"]
[Date "2006.11.26"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Copin, Jean Christophe"]
[Result "1-0"]
[ECO "C78"]
[WhiteElo "1515"]
[BlackElo "1158"]
[PlyCount "53"]
[EventDate "2006.??.??"]
[EventType "match (corr)"]
[EventRounds "2"]
[SourceTitle "Corr 2008"]
[Source "ChessBase"]
[SourceDate "2008.06.24"]
[SourceVersion "1"]
[SourceVersionDate "2008.06.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 b5 5. Bb3 Bc5 6. 0-0 Nf6 7. Nxe5 Nxe5 8. d4 Bxd4 9. Qxd4 Qe7 10. Bf4 d6 11. a4 Nh5 12. Be3 Bh3 13. f4 Bxg2 14. Kxg2 Ng4 15. axb5 Qh4 16. Bg1 0-0 17. Nd2 Ngf6 18. e5 dxe5 19. fxe5 Qg5+ 20. Kh1 Ng4 21. Rxf7 Rxf7 22. Bxf7+ Kxf7 23. Nf3 Qf4 24. Qd5+ Kg6 25. Qxa8 Nxe5 26. Nxe5+ Qxe5 27. bxa6 1-0

[Event "BdF 60 jub Worldopen WS46 email"]
[Site "ICCF email"]
[Date "2006.11.15"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Abdelmoumen, Ahmed"]
[Result "1-0"]
[ECO "B72"]
[PlyCount "147"]
[EventDate "2006.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[SourceTitle "Corr 2008"]
[Source "ChessBase"]
[SourceDate "2008.06.24"]
[SourceVersion "1"]
[SourceVersionDate "2008.06.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Bc4 Bg7 7. h3 0-0 8. Be3 Nxe4 9. Nxe4 d5 10. Nb5 dxc4 11. Qxd8 Rxd8 12. Nc7 Bf5 13. f3 Na6 14. Nxa8 Bxb2 15. Rb1 c3 16. Kf2 Be6 17. Rhd1 Rxa8 18. Rd4 f5 19. Ng5 Bxa2 20. Rbd1 Re8 21. Rd8 Bf7 22. R1d7 Ba3 23. Bxa7 h6 24. Nxf7 Kxf7 25. Rxe8 Kxe8 26. Rxb7 Nb4 27. Bd4 Nxc2 28. Bxc3 Bc5+ 29. Ke2 Nd4+ 30. Kd2 Kf7 31. Kd3 Ne6 32. Be5 h5 33. Rb2 Nf8 34. f4 Nd7 35. Bc7 Nf6 36. Rb5 Ne4 37. Ra5 Bg1 38. Be5 Bh2 39. Kd4 Bg1+ 40. Kc4 Bh2 41. Kd5 h4 42. Kc6 Bg3 43. Rb5 Ke6 44. Bc7 Be1 45. Ba5 Bg3 46. Re5+ Kf7 47. Bd8 e6 48. Ra5 Bxf4 49. Ra7+ Kf8 50. Bxh4 Be5 51. Be7+ Kf7 52. Rb7 Bc3 53. Bg5+ Kg8 54. Bf4 g5 55. Bd6 Bf6 56. Bb4 f4 57. Rd7 Bg7 58. Re7 Ng3 59. Rxe6 Kf7 60. Kd5 Nf5 61. Re2 Ng3 62. Ra2 Kg6 63. Be1 Nh5 64. Ra6+ Kf5 65. Kc4 Bf6 66. Bc3 Bxc3 67. Kxc3 Ng3 68. Ra5+ Kg6 69. Kd4 Nf5+ 70. Ke4 Nh4 71. Ra2 Kh5 72. Rc2 Kg6 73. Ke5 Kg7 74. Rb2 1-0

[Event "BdF 60 jub Worldopen WS46 email"]
[Site "ICCF email"]
[Date "2006.11.15"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Dainauskas, Juozas"]
[Result "1/2-1/2"]
[ECO "C10"]
[BlackElo "2280"]
[PlyCount "46"]
[EventDate "2006.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[SourceTitle "Corr 2008"]
[Source "ChessBase"]
[SourceDate "2008.06.24"]
[SourceVersion "1"]
[SourceVersionDate "2008.06.24"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Nd7 5. Nf3 Be7 6. Bd3 Ngf6 7. Qe2 Nxe4 8. Qxe4 Nf6 9. Qh4 b6 10. Qg3 Bb7 11. 0-0 Bxf3 12. Qxf3 Qd5 13. Bb5+ Kf8 14. Qd3 Rd8 15. Rd1 c6 16. Bc4 Qe4 17. Qxe4 Nxe4 18. a4 Ke8 19. c3 a5 20. Re1 Nf6 21. g3 Nd5 22. Bd2 Kd7 23. Kg2 h6 1/2-1/2

[Event "BdF 60 jub Worldopen WS46 email"]
[Site "ICCF email"]
[Date "2006.11.15"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Laba, Solange"]
[Result "1-0"]
[ECO "C78"]
[BlackElo "2120"]
[PlyCount "53"]
[EventDate "2006.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[SourceTitle "Corr 2008"]
[Source "ChessBase"]
[SourceDate "2008.06.24"]
[SourceVersion "1"]
[SourceVersionDate "2008.06.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 b5 5. Bb3 Nf6 6. 0-0 Bb7 7. Ng5 d5 8. exd5 Nd4 9. Re1 Bd6 10. d3 0-0 11. c4 c6 12. dxc6 Bxc6 13. Nc3 b4 14. Nd5 Bb7 15. Nxf6+ Qxf6 16. Ne4 Qg6 17. Re3 Bxe4 18. Rxe4 Rac8 19. h3 Ne6 20. Qg4 Qxg4 21. hxg4 Nc5 22. Re3 Rfd8 23. Bc2 Ne6 24. Bd2 f6 25. Rae1 Bc5 26. Rh3 h6 27. Rh5 1-0

[Event "BdF 60 jub Worldopen WS46 email"]
[Site "ICCF email"]
[Date "2006.11.15"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Werner, Gerhard"]
[Result "0-1"]
[ECO "C67"]
[BlackElo "2281"]
[PlyCount "138"]
[EventDate "2006.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[SourceTitle "Corr 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.19"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.19"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 Nxe4 5. d4 Be7 6. Re1 Nd6 7. Bxc6 dxc6 8. dxe5 Nf5 9. Qxd8+ Bxd8 10. Nc3 Nh4 11. Nd4 c5 12. Nde2 b6 13. Be3 0-0 14. Rad1 Bb7 15. Nd5 Re8 16. f4 f6 17. Bf2 Ng6 18. exf6 Bxd5 19. Rxd5 Bxf6 20. Rd7 Bxb2 21. Rxc7 Re4 22. g3 Ra4 23. Nc1 Rd8 24. Rb7 Bxc1 25. Rxc1 Rxa2 26. Re1 Rf8 27. Re2 Rf7 28. Rb8+ Nf8 29. Kg2 h6 30. h3 Kh7 31. Rd8 Rf6 32. Rb8 Ne6 33. Rb7 h5 34. Re5 h4 35. Rh5+ Rh6 36. Rxh6+ Kxh6 37. f5 Nd4 38. Be3+ g5 39. gxh4 Nxf5 40. hxg5+ Kg6 41. Bf4 Rxc2+ 42. Kf3 Rc4 43. Rxa7 Nd4+ 44. Kg2 Ne6 45. Be3 Rc3 46. Kf3 Nxg5+ 47. Ke2 Ne4 48. Rb7 Rb3 49. Rc7 Kf5 50. Rc8 Nc3+ 51. Ke1 Ra3 52. Kd2 Ne4+ 53. Ke2 Ra2+ 54. Kd3 Ra4 55. Ke2 Ra3 56. Rf8+ Ke6 57. Re8+ Kd5 58. h4 Ng3+ 59. Kd1 b5 60. Bf4 Rf3 61. Bc1 b4 62. Kc2 Nf5 63. h5 Rh3 64. h6 Nxh6 65. Rd8+ Kc4 66. Rf8 Rh5 67. Rf4+ Kb5 68. Be3 Rh2+ 69. Kd3 Rh3 0-1

[Event "BdF 60 jub Worldopen WS46 email"]
[Site "ICCF email"]
[Date "2006.11.15"]
[Round "?"]
[White "Ignatov, Bozhidar"]
[Black "Deren, Marcin"]
[Result "1-0"]
[ECO "B44"]
[WhiteElo "2364"]
[PlyCount "83"]
[EventDate "2006.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[SourceTitle "Corr 2008"]
[Source "ChessBase"]
[SourceDate "2008.06.24"]
[SourceVersion "1"]
[SourceVersionDate "2008.06.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nb5 d6 6. c4 a6 7. N5c3 Nf6 8. Be2 Be7 9. 0-0 Qb6 10. b3 0-0 11. Be3 Qa5 12. a3 Bd7 13. Ra2 h6 14. b4 Qc7 15. f4 e5 16. Nd5 Nxd5 17. exd5 Nd4 18. fxe5 dxe5 19. c5 Nxe2+ 20. Rxe2 Bh4 21. Bf2 Bf6 22. Re3 Rfe8 23. Rfe1 a5 24. Nc3 axb4 25. axb4 Qc8 26. Bg3 Bg4 27. Qd3 Qf5 28. Qxf5 Bxf5 29. Ne4 Bg6 30. Nd6 Red8 31. Bxe5 Bg5 32. R3e2 Be7 33. Rd2 f6 34. Nxb7 fxe5 35. Nxd8 Bh4 36. g3 Bxd8 37. Rxe5 Bf6 38. Ree2 Bc3 39. b5 Bxd2 40. Rxd2 Kf7 41. c6 Ke7 42. d6+ 1-0

[Event "BdF 60 jub Worldopen WS46 email"]
[Site "ICCF email"]
[Date "2006.11.15"]
[Round "?"]
[White "Makeyev, Aleksey Nikolaevich"]
[Black "Deren, Marcin"]
[Result "0-1"]
[ECO "D94"]
[WhiteElo "2087"]
[PlyCount "110"]
[EventDate "2006.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[SourceTitle "Corr 2008"]
[Source "ChessBase"]
[SourceDate "2008.06.24"]
[SourceVersion "1"]
[SourceVersionDate "2008.06.24"]
[SourceQuality "1"]

1. Nf3 Nf6 2. d4 d5 3. e3 g6 4. c4 Bg7 5. Nc3 c6 6. cxd5 cxd5 7. Bd3 0-0 8. Bd2 Nc6 9. 0-0 e5 10. Nxe5 Nxe5 11. dxe5 Ng4 12. f4 d4 13. Ne4 Nxe3 14. Bxe3 dxe3 15. Qe2 Qb6 16. Rae1 Rd8 17. Bc4 Qc6 18. Nd6 Rxd6 19. exd6 Qxd6 20. Kh1 Bd4 21. Rd1 Qf6 22. Qf3 Bb6 23. f5 gxf5 24. b3 Be6 25. Qxb7 Re8 26. Be2 Qe5 27. Qf3 Bc7 28. g3 Kg7 29. Qg2 Bb6 30. Bf3 Rc8 31. Rc1 Rg8 32. Qe2 Bd4 33. Bg2 Rd8 34. Rcd1 Rd6 35. Bb7 Bd7 36. Rfe1 Bb5 37. Qf3 e2 38. Rd2 Re6 39. Rc2 Bc5 40. a4 Bb4 41. Rcc1 Bd7 42. Kg2 Bd2 43. Rb1 Qc7 44. Bd5 Re5 45. Ba8 Re3 46. Qf4 Qxf4 47. gxf4 Bxe1 48. Rxe1 Rxb3 49. Rxe2 Bxa4 50. Ra2 Rb4 51. Kf3 Kf6 52. Ra1 a5 53. Ke3 Ke6 54. Ra2 Kd6 55. Rd2+ Ke7 0-1

[Event "BdF 60 jub Worldopen WS46 email"]
[Site "ICCF email"]
[Date "2006.11.15"]
[Round "?"]
[White "Proof, Michael C"]
[Black "Deren, Marcin"]
[Result "1-0"]
[ECO "B45"]
[WhiteElo "2386"]
[PlyCount "69"]
[EventDate "2006.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[SourceTitle "Corr 2008"]
[Source "ChessBase"]
[SourceDate "2008.06.24"]
[SourceVersion "1"]
[SourceVersionDate "2008.06.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Nf6 6. Ndb5 Bc5 7. Bf4 e5 8. Be3 d6 9. Bxc5 dxc5 10. Qxd8+ Kxd8 11. 0-0-0+ Nd4 12. f4 Bg4 13. Rd2 exf4 14. Nxd4 cxd4 15. Rxd4+ Kc8 16. e5 Nd7 17. h3 Be6 18. Bc4 f3 19. Bxe6 fxe6 20. gxf3 Nxe5 21. Rhd1 a6 22. f4 Ng6 23. Na4 Ra7 24. Rd7 Nxf4 25. Nb6+ Kb8 26. Rxg7 h5 27. c4 e5 28. Rdd7 e4 29. Rde7 Rd8 30. Kc2 Nd3 31. a3 h4 32. b4 Ne1+ 33. Kc3 Nf3 34. c5 Nd4 35. Nd7+ 1-0

[Event "BdF 60 jub Worldopen WS46 email"]
[Site "ICCF email"]
[Date "2006.11.15"]
[Round "?"]
[White "Ziechaus, Lothar"]
[Black "Deren, Marcin"]
[Result "0-1"]
[ECO "B21"]
[PlyCount "114"]
[EventDate "2006.??.??"]
[EventType "tourn (corr)"]
[EventRounds "8"]
[SourceTitle "Corr 2008"]
[Source "ChessBase"]
[SourceDate "2008.06.24"]
[SourceVersion "1"]
[SourceVersionDate "2008.06.24"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. Qxd4 Nc6 4. Qa4 e6 5. Nf3 Bc5 6. Bd3 d6 7. e5 Bd7 8. Qc4 Rc8 9. 0-0 Nxe5 10. Nxe5 dxe5 11. Qe4 Qc7 12. Qg4 Kf8 13. Nc3 f5 14. Qh4 Be7 15. Bg5 Bxg5 16. Qxg5 Qb6 17. Rab1 Kf7 18. Qg3 e4 19. Bxe4 fxe4 20. Nxe4 Rxc2 21. Rfd1 Qc7 22. Qd3 Ke8 23. Nc3 Rxc3 24. bxc3 Nf6 25. Qd4 b6 26. Rb4 Kf7 27. Rc4 Qb8 28. f4 Bb5 29. Rb4 Bc6 30. Qd3 Rc8 31. Rd4 Qb7 32. Rd6 Bxg2 33. Qe3 Be4 34. R6d4 Bd5 35. a3 Rc4 36. Rxc4 Bxc4 37. Rd4 Qc6 38. Qe5 Ba6 39. Rd6 Qc4 40. Rd1 Bb7 41. h3 Qc6 42. Kf2 Qg2+ 43. Ke3 Nd5+ 44. Kd4 Qf2+ 45. Kd3 Ba6+ 46. c4 Bxc4+ 47. Kxc4 Qc2+ 48. Kb5 Nc7+ 49. Qxc7+ Qxc7 50. Ka6 Qc4+ 51. Kb7 Qd5+ 52. Rxd5 exd5 53. a4 d4 54. Kxa7 d3 55. Kxb6 d2 56. a5 d1Q 57. a6 Qb3+ 0-1

[Event "IECC Swiss-518.1"]
[Site "IECC email"]
[Date "2006.11.08"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Hess, John"]
[Result "1/2-1/2"]
[ECO "B38"]
[WhiteElo "1558"]
[BlackElo "1672"]
[PlyCount "103"]
[EventDate "2006.??.??"]
[EventType "swiss (corr)"]
[EventRounds "1"]
[SourceTitle "Corr 2008"]
[Source "ChessBase"]
[SourceDate "2008.06.24"]
[SourceVersion "1"]
[SourceVersionDate "2008.06.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 a6 3. c4 d6 4. d4 cxd4 5. Nxd4 Nf6 6. Nc3 g6 7. Be2 Bg7 8. 0-0 0-0 9. Be3 Bd7 10. f3 Nc6 11. Nxc6 Bxc6 12. Qd2 Re8 13. Nd5 Nd7 14. Rad1 Rc8 15. Nb4 Qc7 16. Nxc6 Qxc6 17. b4 b6 18. Kh1 Rc7 19. Rb1 Rec8 20. Rfc1 Qa8 21. a4 Ne5 22. c5 dxc5 23. bxc5 bxc5 24. f4 Nd7 25. e5 e6 26. a5 Qa7 27. Bd3 Bf8 28. Be4 Rb8 29. Kg1 Rb5 30. Qa2 Rc8 31. Rd1 Rxb1 32. Qxb1 Rb8 33. Qd3 Rd8 34. Rd2 Be7 35. Qc4 Nb8 36. Rb2 Qd7 37. Rb7 Qe8 38. Bf3 Bf8 39. Rb6 Qd7 40. Kf2 Qc7 41. Be4 Qe7 42. Kg3 Qc7 43. Kh3 Qd7 44. g3 Rc8 45. Kg2 Be7 46. Rb7 Qd8 47. Bf3 Rc7 48. Rb6 Qc8 49. Bd2 Rd7 50. Bc3 Ra7 51. Be4 Bd8 52. Rb3 1/2-1/2

[Event "IECC Swiss-516.1"]
[Site "IECC email"]
[Date "2006.09.06"]
[Round "?"]
[White "Deren, Marcin"]
[Black "Labiche, Alexandre"]
[Result "1-0"]
[ECO "C65"]
[WhiteElo "1500"]
[BlackElo "1026"]
[PlyCount "83"]
[EventDate "2006.??.??"]
[EventType "swiss (corr)"]
[EventRounds "1"]
[SourceTitle "Corr 2020"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]
[WhiteTeam "Poland"]
[BlackTeam "France"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "FRA"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 Bc5 5. c3 0-0 6. d4 Bb6 7. Nxe5 Nxe5 8. dxe5 Nxe4 9. Nd2 Nxd2 10. Qxd2 Re8 11. Re1 Re6 12. Bc4 Re8 13. Qd5 Rf8 14. Re4 Qe7 15. Bf4 c6 16. Qd3 Bc7 17. Qg3 d5 18. exd6 Qxe4 19. Bd3 Qe6 20. dxc7 Re8 21. h4 Qg4 22. Kh2 Qxg3+ 23. Kxg3 g6 24. Rd1 Be6 25. c4 Rac8 26. Bd6 Bd7 27. Kf4 Re6 28. c5 Rce8 29. Rd2 Re1 30. b3 Kg7 31. Bc4 Bc8 32. Kg3 R8e4 33. f3 h5 34. fxe4 Rxe4 35. Bf4 Bg4 36. Rd8 Re7 37. c8Q Bxc8 38. Rxc8 a6 39. Bd6 Re2 40. Bxe2 f6 41. Rc7+ Kh6 42. Bf8# 1-0

[Event "Canarias en Red prel 2nd"]
[Site "Playchess.com INT"]
[Date "2004.05.04"]
[Round "8"]
[White "Bornemann, Michael"]
[Black "Deren, Marcin"]
[Result "1-0"]
[ECO "A82"]
[WhiteElo "2204"]
[BlackElo "2023"]
[PlyCount "39"]
[EventDate "2004.05.04"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. d4 f5 2. e4 fxe4 3. Nc3 Nf6 4. f3 exf3 5. Nxf3 e6 6. Bd3 g6 7. 0-0 Bg7 8. Bg5 0-0 9. Ne5 d6 10. Nxg6 hxg6 11. Bxg6 Qd7 12. Bxf6 Bxf6 13. Ne4 Bh8 14. Rxf8+ Kxf8 15. Qf3+ Kg8 16. Ng5 Nc6 17. Bf7+ Kg7 18. Qh5 Kf6 19. Rf1+ Ke7 20. Bxe6 1-0

