[Event "POL-ch Universities"]
[Site "Lublin"]
[Date "2024.02.23"]
[Round "2"]
[White "Baum, Jonasz"]
[Black "Iwanczuk, Krzysztof"]
[Result "1-0"]
[ECO "C78"]
[WhiteElo "2400"]
[BlackElo "2014"]
[PlyCount "74"]
[EventDate "2024.02.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CB10_2024"]
[SourceDate "2024.03.06"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 b5 6. Bb3 Bc5 7. a4 Rb8 8. c3 d6 9. d4 Bb6 10. a5 Ba7 11. h3 Bb7 12. Be3 Nxe4 13. Nbd2 Nxd2 14. Qxd2 0-0 15. dxe5 Bxe3 16. Qxe3 Nxe5 17. Nxe5 dxe5 18. Qxe5 Qd2 19. Rab1 Rbe8 20. Qxc7 Be4 21. Ra1 Qxb2 22. Ba2 Rc8 23. Qa7 Rc6 24. Rfd1 h6 25. Re1 Rg6 26. g4 Qxc3 27. Qe3 Qxe3 28. Rxe3 Bf5 29. Rc1 h5 30. f3 hxg4 31. hxg4 Rd8 32. Rce1 Rd2 33. Re8+ Kh7 34. Bxf7 Rf6 35. Bg8+ Kh6 36. gxf5 Kg5 37. R8e6 Rxf5 1-0

[Event "Polanica Zdroj op 59th"]
[Site "Polanica Zdroj"]
[Date "2023.08.26"]
[Round "8"]
[White "Betkowski, Andrzej"]
[Black "Iwanczuk, Krzysztof"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "2022"]
[BlackElo "1950"]
[PlyCount "12"]
[EventDate "2023.08.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Nf6 3. e3 c5 4. c3 Nc6 5. Nd2 Bf5 6. Ngf3 Qb6 1/2-1/2

[Event "Polanica Zdroj op 59th"]
[Site "Polanica Zdroj"]
[Date "2023.08.25"]
[Round "7"]
[White "Iwanczuk, Krzysztof"]
[Black "Jourdren, Kevin"]
[Result "1/2-1/2"]
[ECO "B36"]
[WhiteElo "1950"]
[BlackElo "2200"]
[PlyCount "120"]
[EventDate "2023.08.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Nf6 6. Nc3 d6 7. Be2 Nxd4 8. Qxd4 Bg7 9. 0-0 0-0 10. Qd3 a5 11. Be3 a4 12. Bd4 Qa5 13. Rac1 Bd7 14. f4 Bc6 15. Nd5 Bxd5 16. cxd5 Rfc8 17. Bf3 Rc7 18. b4 axb3 19. axb3 Rxc1 20. Rxc1 Ne8 21. e5 Qb4 22. Qc3 Qxc3 23. Rxc3 f6 24. Re3 fxe5 25. fxe5 Rc8 26. Bg4 Rc1+ 27. Kf2 Bxe5 28. Bxe5 dxe5 29. Rxe5 Kf8 30. Bf3 Nd6 31. Re1 Rxe1 32. Kxe1 Kf7 33. Kd2 Kf6 34. Kd3 Ke5 35. g3 g5 36. Kc3 h6 37. Kd3 b6 38. Kc3 Nb5+ 39. Kc4 Nd6+ 40. Kd3 Nf5 41. Bg2 g4 42. Bh1 Nd6 43. Bg2 Nf5 44. Bh1 h5 45. Be4 Nd4 46. Bg6 Nxb3 47. Bxh5 Kf5 48. Kc4 Nc5 49. Kb5 Nd7 50. Kc6 Nf6 51. Bf7 Ke5 52. Be6 Ke4 53. Bf7 b5 54. Kxb5 Nxd5 55. Kc6 Ne3 56. Be6 Ke5 57. Kd7 Kf6 58. h3 gxh3 59. Bxh3 e5 60. Kd6 Nf5+ 1/2-1/2

[Event "Polanica Zdroj op 59th"]
[Site "Polanica Zdroj"]
[Date "2023.08.24"]
[Round "6"]
[White "Gramer, Kent"]
[Black "Iwanczuk, Krzysztof"]
[Result "0-1"]
[ECO "B90"]
[WhiteElo "2091"]
[BlackElo "1950"]
[PlyCount "60"]
[EventDate "2023.08.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bd3 Nc6 7. Nb3 g6 8. 0-0 Bg7 9. h3 0-0 10. Be3 Be6 11. f4 Rc8 12. Qf3 Na5 13. Rad1 Nd7 14. e5 dxe5 15. f5 Bc4 16. fxg6 fxg6 17. Qg4 Bxd3 18. Rxd3 Rxf1+ 19. Kxf1 Nxb3 20. Rxd7 Qf8+ 21. Kg1 Nd4 22. Bxd4 exd4 23. Ne4 Qf5 24. Qxf5 gxf5 25. Ng5 Bf6 26. Nf3 Rxc2 27. Rxb7 e5 28. Rb6 Kf7 29. Rxa6 e4 30. Ne1 Rc1 0-1

[Event "Polanica Zdroj op 59th"]
[Site "Polanica Zdroj"]
[Date "2023.08.23"]
[Round "5"]
[White "Iwanczuk, Krzysztof"]
[Black "Bachor, Tomasz"]
[Result "0-1"]
[ECO "B48"]
[WhiteElo "1950"]
[BlackElo "2025"]
[PlyCount "46"]
[EventDate "2023.08.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. g4 h6 8. h4 b5 9. Nxc6 Qxc6 10. Bg2 Bb7 11. a4 b4 12. Ne2 Nf6 13. Nd4 Qc7 14. g5 hxg5 15. hxg5 Rxh1+ 16. Bxh1 Qh2 17. Kd2 Nxe4+ 18. Bxe4 Bxe4 19. Qg4 Qe5 20. Re1 Rc8 21. f3 Bxc2 22. Bg1 Qd5 23. f4 g6 0-1

[Event "Polanica Zdroj op 59th"]
[Site "Polanica Zdroj"]
[Date "2023.08.22"]
[Round "4"]
[White "Smietanska, Wiktoria"]
[Black "Iwanczuk, Krzysztof"]
[Result "1/2-1/2"]
[ECO "C88"]
[WhiteElo "2017"]
[BlackElo "1950"]
[PlyCount "106"]
[EventDate "2023.08.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. a4 d5 9. exd5 Na5 10. Nxe5 Nxb3 11. cxb3 Bb7 12. Nc6 Bxc6 13. dxc6 Bc5 14. d4 Bxd4 15. axb5 Ne4 16. Be3 Bxe3 17. fxe3 Qh4 18. Rf1 Rad8 19. Qc2 axb5 20. Nc3 Nf6 21. Rf4 Qh6 22. Rd1 Rfe8 23. Qf2 Rxd1+ 24. Nxd1 Qg6 25. Nc3 Ng4 26. Qd2 h5 27. Nxb5 Nxe3 28. Nc3 Qxc6 29. h3 Qa8 30. Qf2 Re6 31. Qf3 Qa1+ 32. Kh2 Qxb2 33. Nd1 Qxb3 34. Nxe3 Qxe3 35. Rxf7 Qxf3 36. Rxf3 c5 37. Rc3 Rc6 38. Kg3 Kf7 39. Kf4 Ke6 40. Ke4 g6 41. h4 Kd6 42. Rd3+ Kc7 43. Rc3 Kb6 44. Kd5 Rc8 45. Rb3+ Ka5 46. Kc4 Rc6 47. Rb5+ Ka6 48. Rxc5 Kb6 49. Rxc6+ Kxc6 50. Kd4 Kd6 51. Ke4 Ke6 52. Kf4 Kf6 53. g4 hxg4 1/2-1/2

[Event "Polanica Zdroj op 59th"]
[Site "Polanica Zdroj"]
[Date "2023.08.21"]
[Round "3"]
[White "Iwanczuk, Krzysztof"]
[Black "Krawczyk, Wojciech"]
[Result "1/2-1/2"]
[ECO "E33"]
[WhiteElo "1950"]
[BlackElo "2034"]
[PlyCount "153"]
[EventDate "2023.08.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 e6 2. c4 Bb4+ 3. Bd2 a5 4. Nf3 Nf6 5. Qc2 Nc6 6. e3 d6 7. Nc3 0-0 8. a3 Bxc3 9. Bxc3 Qe7 10. Be2 b6 11. 0-0 Bb7 12. b4 Nd7 13. Rfb1 axb4 14. axb4 Rxa1 15. Rxa1 Rc8 16. Qb2 Nd8 17. b5 f5 18. Bb4 Ra8 19. Rxa8 Bxa8 20. Qa2 Bb7 21. Nd2 Nf6 22. Bf3 Bxf3 23. Nxf3 Qd7 24. h3 h6 25. Nd2 Kh7 26. Qa8 d5 27. Qa2 Nf7 28. Nf3 Ne4 29. Qe2 Ned6 30. Bxd6 Qxd6 31. Qc2 dxc4 32. Qxc4 Qd7 33. Kf1 Kg8 34. Ke2 Kf8 35. Nh4 Nd6 36. Ng6+ Ke8 37. Qc6 Qxc6 38. bxc6 Nc8 39. Kd3 Na7 40. Ne5 Ke7 41. e4 fxe4+ 42. Kxe4 Kd6 43. f4 Nxc6 44. Nc4+ Ke7 45. g4 Nd8 46. Ne3 Nf7 47. f5 Nd6+ 48. Ke5 b5 49. Nc2 Nc4+ 50. Ke4 Kd6 51. h4 Nb6 52. fxe6 Nd5 53. e7 Nxe7 54. Nb4 c6 55. Nd3 Ng6 56. h5 Ne7 57. Nc5 Ng8 58. Nb7+ Kc7 59. Nc5 Kd6 60. Nb7+ Ke7 61. Na5 Nf6+ 62. Kf5 Kd6 63. Kg6 Nxg4 64. Kxg7 b4 65. Kg6 Ke6 66. Nb3 Kd5 67. Kf5 Ne3+ 68. Kg6 Kc4 69. Na5+ Kb5 70. Nb3 Nd5 71. Kxh6 Nf4 72. Kg5 Nxh5 73. Kxh5 Kc4 74. Na5+ Kc3 75. Kg4 b3 76. Nxb3 Kxb3 77. Kf5 1/2-1/2

[Event "Polanica Zdroj op 59th"]
[Site "Polanica Zdroj"]
[Date "2023.08.20"]
[Round "2"]
[White "Lambrecht, Tomasz"]
[Black "Iwanczuk, Krzysztof"]
[Result "1/2-1/2"]
[ECO "C67"]
[WhiteElo "2027"]
[BlackElo "1950"]
[PlyCount "17"]
[EventDate "2023.08.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. dxe5 Nf5 8. Qxd8+ Kxd8 9. h3 1/2-1/2

[Event "Polanica Zdroj op 59th"]
[Site "Polanica Zdroj"]
[Date "2023.08.19"]
[Round "1"]
[White "Iwanczuk, Krzysztof"]
[Black "Zysko, Jan"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1950"]
[BlackElo "2152"]
[PlyCount "102"]
[EventDate "2023.08.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. Nc3 d5 3. Bf4 e6 4. Nb5 Na6 5. e3 Be7 6. Nf3 0-0 7. h4 c6 8. Nc3 c5 9. h5 Bd7 10. h6 g6 11. Bxa6 bxa6 12. dxc5 Qa5 13. Ne5 Qxc5 14. Bg5 Rad8 15. Qf3 Ne8 16. Nd3 Qd6 17. Bf4 Qb6 18. 0-0 Bc6 19. Qh3 Nd6 20. Ne2 Bd7 21. Qh2 f6 22. Nc3 Rc8 23. Rfd1 Rfd8 24. a3 a5 25. Rab1 Ne4 26. Nxe4 dxe4 27. Ne1 e5 28. Bxe5 fxe5 29. Qxe5 Qf6 30. Qxe4 Bc6 31. Rxd8+ Rxd8 32. Qg4 Bf8 33. Nd3 Bxh6 34. b4 Bf8 35. Nf4 Bd6 36. Nh5 Qe5 37. Qc4+ Kh8 38. Nf4 Qe4 39. Qe6 Qxe6 40. Nxe6 Rb8 41. Rd1 Be7 42. Nd4 Be8 43. b5 Bxa3 44. c4 Rc8 45. Ne6 Bf7 46. Ng5 Bxc4 47. Rd7 h6 48. Ne4 Bc5 49. Nf6 Bg8 50. Rb7 Bb6 51. Ng4 Rc7 0-1

[Event "Wroclaw Anderssen Memorial op-A"]
[Site "Wroclaw"]
[Date "2023.08.13"]
[Round "9"]
[White "Iwanczuk, Krzysztof"]
[Black "Kowalczyk, Rafal"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "1950"]
[BlackElo "2171"]
[PlyCount "131"]
[EventDate "2023.08.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. e5 d5 7. Bb5 Ne4 8. cxd4 Bb6 9. Nc3 0-0 10. Be3 Bg4 11. h3 Bh5 12. Qc2 Bg6 13. Qb3 Ne7 14. 0-0 c6 15. Bd3 Nd2 16. Nxd2 Bxd3 17. Rfe1 Bg6 18. Na4 h6 19. Rac1 Nf5 20. Nf3 Bh7 21. Nc5 Qe7 22. Qa4 g5 23. Bd2 Bxc5 24. Rxc5 Ng7 25. Bb4 Qd7 26. Ra5 b5 27. Qa3 Rfe8 28. Nd2 Ne6 29. Qc3 Nf4 30. Re3 f6 31. Nf3 Be4 32. exf6 Bxf3 33. Rxe8+ Qxe8 34. Qxf3 Qe2 35. Qe3 Re8 36. Qxe2 Nxe2+ 37. Kf1 Kf7 38. Rxa7+ Kxf6 39. Be7+ Rxe7 40. Rxe7 Nxd4 41. Rc7 h5 42. Ke1 Ke5 43. Kd2 b4 44. Rc8 h4 45. a4 bxa3 46. bxa3 c5 47. a4 c4 48. Re8+ Kd6 49. Rg8 Kc5 50. Rxg5 Ne6 51. Rh5 Nc7 52. Kc3 Ne6 53. Rf5 Nd4 54. Re5 Nb3 55. Rh5 Nc1 56. a5 Na2+ 57. Kd2 Nb4 58. Rxh4 d4 59. Rh5+ Kc6 60. Rh8 c3+ 61. Kd1 Kb5 62. Rc8 Na2 63. a6 Kb6 64. Rc4 d3 65. a7 c2+ 66. Kd2 1-0

[Event "Wroclaw Anderssen Memorial op-A"]
[Site "Wroclaw"]
[Date "2023.08.12"]
[Round "8"]
[White "Kukula, Karol"]
[Black "Iwanczuk, Krzysztof"]
[Result "1/2-1/2"]
[ECO "C48"]
[WhiteElo "1939"]
[BlackElo "1950"]
[PlyCount "29"]
[EventDate "2023.08.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Nd4 5. Nxd4 exd4 6. e5 dxc3 7. exf6 Qxf6 8. dxc3 Bc5 9. 0-0 0-0 10. Bd3 d6 11. Qh5 h6 12. Bd2 Bd7 13. Rae1 Rae8 14. Be4 Bb5 15. Bd3 1/2-1/2

[Event "Wroclaw Anderssen Memorial op-A"]
[Site "Wroclaw"]
[Date "2023.08.11"]
[Round "7"]
[White "Iwanczuk, Krzysztof"]
[Black "Ugorek, Kacper"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "1950"]
[BlackElo "1990"]
[PlyCount "119"]
[EventDate "2023.08.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. Nc3 d5 3. Bf4 c5 4. e4 Nxe4 5. Nxe4 dxe4 6. dxc5 Qa5+ 7. c3 Qxc5 8. Qa4+ Nc6 9. Qxe4 g6 10. Nf3 Bg7 11. Rd1 Bf5 12. Qa4 0-0 13. Be3 Qa5 14. Qxa5 Nxa5 15. Nd4 Bg4 16. f3 Bxd4 17. Rxd4 Be6 18. Ra4 b6 19. Ba6 Rfd8 20. c4 Bd7 21. Ra3 Bc8 22. Bb5 Bd7 23. Bxd7 Rxd7 24. Rc3 Rc8 25. b3 b5 26. c5 Nc6 27. Ke2 Rcd8 28. a3 a6 29. Ra1 f6 30. Ra2 Kf7 31. Rcc2 e5 32. Rd2 Rxd2+ 33. Rxd2 Rxd2+ 34. Kxd2 Ke6 35. Kc3 Kd5 36. b4 f5 37. g3 Nd8 38. f4 Ke4 39. Bc1 Nc6 40. fxe5 Nxe5 41. Bf4 Nc6 42. h4 Kf3 43. Kd3 h6 44. Bc7 g5 45. hxg5 hxg5 46. Bd6 Kf2 47. Bc7 Ke1 48. Bd6 Kd1 49. g4 fxg4 50. Ke4 a5 51. bxa5 Nxa5 52. Kd5 Nc4 53. Bg3 Nxa3 54. c6 Nc4 55. Kc5 Nd2 56. c7 Ne4+ 57. Kxb5 Nxg3 58. c8Q Ne2 59. Qxg4 Kd2 60. Qxg5+ 1-0

[Event "Wroclaw Anderssen Memorial op-A"]
[Site "Wroclaw"]
[Date "2023.08.10"]
[Round "6"]
[White "Miasik, Adrian"]
[Black "Iwanczuk, Krzysztof"]
[Result "1/2-1/2"]
[ECO "D85"]
[WhiteElo "2018"]
[BlackElo "1950"]
[PlyCount "97"]
[EventDate "2023.08.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. Bd2 Bg7 6. e4 Nxc3 7. Bxc3 0-0 8. Qd2 Nd7 9. Rd1 b6 10. Bc4 Bb7 11. f3 e6 12. Ne2 c5 13. d5 exd5 14. Bxg7 Kxg7 15. Bxd5 Bxd5 16. Qxd5 Nf6 17. Qe5 Qe8 18. Qc3 Rd8 19. g4 Rxd1+ 20. Kxd1 Qd8+ 21. Kc2 Kg8 22. Rd1 Qe7 23. Qd3 Re8 24. Nf4 Qe5 25. Qd6 g5 26. Qxe5 Rxe5 27. Ng2 h5 28. h3 h4 29. Ne3 Re7 30. Rd8+ Re8 31. Rd2 Re7 32. Nd5 Re6 33. Ne3 Re7 34. Rd6 Re6 35. Rd3 Re7 36. Nd5 Re6 37. Nxf6+ Rxf6 38. Kd2 c4 39. Rd8+ Kg7 40. Ke2 Rc6 41. Kd2 a6 42. Rd5 Kg6 43. a4 Rf6 44. Ke3 Rc6 45. Kd4 Rf6 46. Ke3 Rc6 47. Kd4 Rf6 48. Rf5 Rc6 49. Rd5 1/2-1/2

[Event "Wroclaw Anderssen Memorial op-A"]
[Site "Wroclaw"]
[Date "2023.08.09"]
[Round "5"]
[White "Iwanczuk, Krzysztof"]
[Black "Kolbus, Dietmar"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1950"]
[BlackElo "2270"]
[PlyCount "81"]
[EventDate "2023.08.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. Nc3 d5 3. Bf4 c6 4. e3 Bf5 5. Nf3 e6 6. Ne5 h6 7. g4 Bh7 8. h4 Nfd7 9. Bd3 Nxe5 10. dxe5 Be7 11. Bxh7 Rxh7 12. Qd3 Rh8 13. Bg3 Nd7 14. 0-0-0 Qa5 15. Kb1 0-0-0 16. Ne2 Nc5 17. Qd4 Ne4 18. c3 Qa6 19. Qd3 Qxd3+ 20. Rxd3 h5 21. g5 g6 22. f3 Nc5 23. Rd2 a5 24. Nf4 b5 25. Nd3 Na4 26. Kc2 Nb6 27. b4 Nc4 28. Re2 Kc7 29. e4 axb4 30. cxb4 Ra8 31. Kb1 Rhd8 32. Rd1 Ra3 33. Ne1 dxe4 34. Rxd8 Kxd8 35. Nc2 exf3 36. Re1 Rd3 37. Bf2 Rd2 38. Bg3 f2 39. Rc1 f1Q 40. Rxf1 Rxc2 41. Rxf7 0-1

[Event "Wroclaw Anderssen Memorial op-A"]
[Site "Wroclaw"]
[Date "2023.08.08"]
[Round "4"]
[White "Damen, Jip"]
[Black "Iwanczuk, Krzysztof"]
[Result "1/2-1/2"]
[ECO "C77"]
[WhiteElo "2199"]
[BlackElo "1950"]
[PlyCount "151"]
[EventDate "2023.08.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. d3 b5 7. Bb3 d6 8. a3 0-0 9. Nc3 Na5 10. Ba2 Be6 11. b4 Bxa2 12. Nxa2 Nc6 13. c4 Nd4 14. Nc3 Nxf3+ 15. Qxf3 c6 16. Bd2 Qd7 17. Ne2 d5 18. cxd5 cxd5 19. Bg5 Rac8 20. Rfc1 d4 21. Ng3 Rxc1+ 22. Rxc1 Rc8 23. Rxc8+ Qxc8 24. Nf5 Qc7 25. h4 Bd8 26. h5 Ne8 27. Qg4 Bxg5 28. Qxg5 f6 29. Qg4 Kf7 30. Kh2 Qc2 31. h6 Qxf2 32. hxg7 Qf4+ 33. Qxf4 exf4 34. Kh3 Nc7 35. Nxd4 Kxg7 36. Kg4 Kf7 37. Kxf4 Ke7 38. Kf5 Kf7 39. Nb3 Ne6 40. d4 Ng7+ 41. Kf4 Ne6+ 42. Ke3 Ke7 43. Nc5 Nc7 44. Kf4 Kd6 45. Kf5 Ke7 46. g4 Ne8 47. Kf4 Nd6 48. a4 bxa4 49. Nxa4 Nc4 50. d5 h6 51. Nc5 a5 52. bxa5 Nxa5 53. Ne6 Nc4 54. Ng7 Kf7 55. Nf5 Kg6 56. d6 Ne5 57. Ne7+ Kf7 58. Kf5 Nf3 59. Kf4 Ne5 60. Nf5 Kg6 61. Kg3 Nd7 62. Kh4 Ne5 63. Ne7+ Kf7 64. Kh5 Ke6 65. Nf5 Nf7 66. Kg6 Ne5+ 67. Kh5 Nf7 68. Ng7+ Kxd6 69. Kg6 Ke7 70. Nh5 Ne5+ 71. Kf5 Nd7 72. Nf4 Kf7 73. Nd5 Kg7 74. Nf4 Kf7 75. Nd3 Nf8 76. Nf4 1/2-1/2

[Event "Wroclaw Anderssen Memorial op-A"]
[Site "Wroclaw"]
[Date "2023.08.07"]
[Round "3"]
[White "Iwanczuk, Krzysztof"]
[Black "Demski, Michal"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "1950"]
[BlackElo "2097"]
[PlyCount "91"]
[EventDate "2023.08.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 d6 2. e4 g6 3. Nf3 Bg7 4. c3 Nf6 5. Bd3 0-0 6. 0-0 c6 7. a4 Qc7 8. Re1 e5 9. Nbd2 b6 10. h3 Nbd7 11. Nf1 Bb7 12. Ng3 a6 13. Be3 b5 14. Qd2 Rfe8 15. Bh6 Bh8 16. Bf1 Rad8 17. Qc2 Nf8 18. Rad1 Ne6 19. Rd2 Nd7 20. Red1 Bg7 21. Bxg7 Kxg7 22. d5 cxd5 23. exd5 Nf4 24. axb5 axb5 25. Bxb5 Qc5 26. c4 Re7 27. Bxd7 Rexd7 28. Ne4 Qc7 29. g3 Nxh3+ 30. Kh2 f5 31. Kxh3 fxe4 32. Ng5 Re7 33. Ne6+ Rxe6 34. dxe6 Qe7 35. Qc3 Qxe6+ 36. Kh2 Bc8 37. Rh1 e3 38. Qxe3 Qxc4 39. Kg2 Bb7+ 40. f3 Kg8 41. Rh4 Qf7 42. Rb4 Rd7 43. Rb6 Qe7 44. Re2 Qe6 45. Qa3 Rf7 46. Rxb7 1-0

[Event "Wroclaw Anderssen Memorial op-A"]
[Site "Wroclaw"]
[Date "2023.08.06"]
[Round "1"]
[White "Iwanczuk, Krzysztof"]
[Black "Stemmler, Fabian"]
[Result "1/2-1/2"]
[ECO "C01"]
[WhiteElo "1950"]
[BlackElo "2141"]
[PlyCount "40"]
[EventDate "2023.08.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Nc6 5. Bb5 Bd6 6. c4 dxc4 7. d5 a6 8. Ba4 b5 9. dxc6 bxa4 10. 0-0 Ne7 11. Nbd2 c3 12. Ne4 0-0 13. Qxa4 Qe8 14. Nxd6 cxd6 15. bxc3 Qxc6 16. Qxc6 Nxc6 17. Rd1 Rd8 18. Bf4 d5 19. Nd4 Nxd4 20. cxd4 Bf5 1/2-1/2

[Event "Wroclaw Anderssen Memorial op-A"]
[Site "Wroclaw"]
[Date "2023.08.06"]
[Round "2"]
[White "Kazmierowski, Tymon"]
[Black "Iwanczuk, Krzysztof"]
[Result "1/2-1/2"]
[ECO "C89"]
[WhiteElo "2063"]
[BlackElo "1950"]
[PlyCount "114"]
[EventDate "2023.08.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. c3 d5 9. exd5 Nxd5 10. Nxe5 Nxe5 11. Rxe5 c6 12. d4 Bd6 13. Re1 Qh4 14. g3 Qh3 15. Qf3 Bg4 16. Qg2 Qh5 17. Be3 Bf3 18. Qf1 f5 19. Nd2 f4 20. Nxf3 fxe3 21. Bd1 Rxf3 22. Bxf3 Qxf3 23. fxe3 Qe4 24. Qg2 Re8 25. Qxe4 Rxe4 26. Kf2 Kf7 27. Kf3 Nf6 28. a4 b4 29. Rac1 g5 30. Rc2 h5 31. Ke2 h4 32. gxh4 Rxh4 33. Kd3 bxc3 34. bxc3 Rxh2 35. Rxh2 Bxh2 36. Rh1 Bc7 37. e4 Kg6 38. e5 Nh5 39. Rb1 Kf5 40. Rb7 Nf4+ 41. Ke3 c5 42. Kf3 g4+ 43. Kg3 Ne6 44. a5 cxd4 45. cxd4 Bxa5 46. Rf7+ Kg5 47. d5 Be1+ 48. Kg2 Nf4+ 49. Kf1 Bb4 50. d6 g3 51. Rg7+ Kf5 52. d7 Ne6 53. Rxg3 Be7 54. Re3 Nc5 55. Rc3 Nxd7 56. Rc7 Ke6 57. Rc6+ Kxe5 1/2-1/2

[Event "POL-ch Universities"]
[Site "Bydgoszcz"]
[Date "2023.03.10"]
[Round "4"]
[White "Iwanczuk, Krzysztof"]
[Black "Galuszka, Tomasz"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "1934"]
[BlackElo "2189"]
[PlyCount "53"]
[EventDate "2023.03.10"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. h4 h5 5. Bd3 Bxd3 6. Qxd3 Qa5+ 7. Nd2 e6 8. Ngf3 Qa6 9. c4 Ne7 10. 0-0 Nf5 11. b3 Nd7 12. a4 Rd8 13. Qc2 Be7 14. Ba3 Bxa3 15. Rxa3 dxc4 16. bxc4 Nf8 17. Rd3 Ng6 18. Ne4 b6 19. d5 cxd5 20. cxd5 0-0 21. Rfd1 Nf4 22. R3d2 Rc8 23. Qb1 Nxd5 24. Rxd5 exd5 25. Neg5 g6 26. e6 f6 27. e7 1-0

[Event "POL-ch Universities"]
[Site "Bydgoszcz"]
[Date "2023.03.10"]
[Round "5"]
[White "Kumala, Aleksander"]
[Black "Iwanczuk, Krzysztof"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "2165"]
[BlackElo "1934"]
[PlyCount "91"]
[EventDate "2023.03.10"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 d5 3. Bxf6 gxf6 4. e3 c5 5. dxc5 e6 6. Nf3 Nc6 7. Be2 Bxc5 8. 0-0 0-0 9. c4 dxc4 10. Qc2 Qc7 11. Qxc4 Be7 12. Nc3 f5 13. Rfd1 a6 14. Rac1 Bd7 15. e4 fxe4 16. Qxe4 Rad8 17. Bd3 f5 18. Qe3 Bf6 19. Bc4 Kh8 20. Re1 Rde8 21. Bb3 Bc8 22. Na4 Qg7 23. Rc2 Nd4 24. Nxd4 Bxd4 25. Qe2 Rg8 26. g3 f4 27. Kg2 b5 28. Nc5 Bxc5 29. Rxc5 Bb7+ 30. Bd5 Bxd5+ 31. Rxd5 f3+ 32. Qxf3 exd5 33. Rxe8 Rxe8 34. Qxd5 Qe5 35. Qf7 Qe6 36. Qc7 Rf8 37. Qc5 Qe4+ 38. Kg1 Rd8 39. Qh5 Qe1+ 40. Kg2 Qe7 41. h4 Rf8 42. Qd5 Qf6 43. Qc5 Qf3+ 44. Kg1 Qf5 45. Qb6 Re8 46. Qd4+ 0-1

[Event "Krakow op-B 33rd"]
[Site "Krakow"]
[Date "2023.01.04"]
[Round "9"]
[White "Iwanczuk, Krzysztof"]
[Black "Janus, Przemyslaw"]
[Result "0-1"]
[ECO "C00"]
[WhiteElo "1945"]
[BlackElo "2030"]
[PlyCount "168"]
[EventDate "2022.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. 0-0 c5 5. d3 Nc6 6. Nbd2 Be7 7. e4 Qc7 8. Re1 b6 9. Nf1 dxe4 10. dxe4 Bb7 11. e5 Nd5 12. Ne3 Nxe3 13. Bxe3 Nb4 14. a3 Rd8 15. Bd2 Nc6 16. Qe2 0-0 17. Rad1 Rd7 18. Bf4 Rfd8 19. h4 h6 20. c3 Bf8 21. Nd2 Ne7 22. g4 Bxg2 23. Kxg2 Ng6 24. Bg3 Qc6+ 25. Nf3 Qa4 26. Rxd7 Rxd7 27. Qe4 Qb5 28. h5 Ne7 29. Re2 Rd1 30. Bf4 Nd5 31. c4 Nxf4+ 32. Qxf4 Qd7 33. Rd2 Qa4 34. Rxd1 Qxd1 35. Qd2 Qb3 36. Qe2 a6 37. g5 b5 38. cxb5 axb5 39. gxh6 gxh6 40. Nh2 Qd5+ 41. f3 c4 42. Ng4 Bg7 43. Qe3 Qd1 44. Qe4 Qd2+ 45. Kh3 Qxb2 46. Qa8+ Bf8 47. Nxh6+ Kg7 48. Qe8 Qb1 49. Qxf7+ Kxh6 50. Qxf8+ Kxh5 51. Qh8+ Kg5 52. Qd8+ Kf4 53. Qd4+ Kxf3 54. Qg4+ Ke3 55. Qxe6 Qf1+ 56. Kh2 c3 57. Qh6+ Kd3 58. Qg6+ Kd2 59. e6 c2 60. Qg5+ Kc3 61. e7 Qe2+ 62. Kg3 Kb2 63. Qg7+ Kxa3 64. Qc3+ Ka4 65. e8Q Qxe8 66. Qxc2+ Ka5 67. Qa2+ Kb6 68. Kf4 b4 69. Qc4 Qb5 70. Qd4+ Qc5 71. Qd8+ Kb5 72. Qe8+ Kc4 73. Qe2+ Kb3 74. Qd3+ Kb2 75. Qe2+ Qc2 76. Qe5+ Kb1 77. Qb5 b3 78. Kg3 Qc3+ 79. Kh4 b2 80. Qf1+ Kc2 81. Qe2+ Kb3 82. Qd1+ Ka3 83. Kh5 Qc5+ 84. Kg6 Qb6+ 0-1

[Event "Krakow op-B 33rd"]
[Site "Krakow"]
[Date "2022.12.29"]
[Round "3"]
[White "Kulesza, Andrzej"]
[Black "Iwanczuk, Krzysztof"]
[Result "1-0"]
[ECO "B99"]
[WhiteElo "2053"]
[BlackElo "1945"]
[PlyCount "111"]
[EventDate "2022.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. 0-0-0 Nbd7 10. g4 h6 11. Bxf6 Bxf6 12. Bg2 Nb6 13. h4 Bd7 14. g5 Be7 15. Kb1 0-0-0 16. Bh3 g6 17. Nb3 Kb8 18. Rhe1 Rc8 19. f5 hxg5 20. f6 Bf8 21. hxg5 Rh5 22. Rg1 Nc4 23. Bf1 Ne5 24. Qe3 d5 25. Be2 Rh2 26. exd5 Bb4 27. d6 Bxd6 28. Qd4 Bc5 29. Nxc5 Qxc5 30. Qxc5 Rxc5 31. Rh1 Rg2 32. Rdg1 Bc6 33. Rh8+ Kc7 34. Rxg2 Bxg2 35. Rf8 Rc6 36. Kc1 Rd6 37. Rh8 Rd4 38. Rh7 b6 39. Bxa6 Rg4 40. Rh8 Rxg5 41. Nb5+ Kd7 42. b3 Ng4 43. Rf8 Nh6 44. c4 e5 45. Rb8 e4 46. Rb7+ Ke6 47. Rxb6+ Ke5 48. Nc3 Nf5 49. c5 e3 50. c6 Bxc6 51. Rxc6 Rg1+ 52. Kb2 Nd4 53. Rc8 Rg2+ 54. Ka3 g5 55. Re8+ Ne6 56. Bc4 1-0

[Event "Krakow op-B 33rd"]
[Site "Krakow"]
[Date "2022.12.28"]
[Round "2"]
[White "Iwanczuk, Krzysztof"]
[Black "Niezhentsev, Kyrylo"]
[Result "1-0"]
[ECO "A07"]
[WhiteElo "1945"]
[BlackElo "2052"]
[PlyCount "163"]
[EventDate "2022.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 c6 3. Bg2 Nf6 4. 0-0 Bg4 5. h3 Bh5 6. c4 e6 7. Qb3 Qb6 8. d3 Nbd7 9. cxd5 exd5 10. Qc2 Bd6 11. Be3 Qc7 12. Nh4 Bg6 13. Nc3 0-0 14. Bd4 Nh5 15. e4 dxe4 16. dxe4 Rad8 17. Rad1 Rfe8 18. Nxg6 hxg6 19. a3 Ne5 20. b4 Nc4 21. Qb3 b5 22. a4 a6 23. Rd3 Qe7 24. Rb1 Rd7 25. Ne2 Be5 26. Rbd1 Red8 27. f4 Bxd4+ 28. Nxd4 Kh7 29. Nxc6 Rxd3 30. Rxd3 Rxd3 31. Qxd3 Qc7 32. axb5 axb5 33. e5 Qb6+ 34. Kh2 Qf2 35. Qf3 Qd2 36. f5 Qe1 37. e6 Nd2 38. Qd3 fxe6 39. fxg6+ Kh6 40. Ne7 Qf2 41. Ng8+ Kg5 42. Qxb5+ Kxg6 43. Qe8+ Kh7 44. Qxh5+ Kxg8 45. Qd1 e5 46. Kh1 e4 47. Bxe4 Nxe4 48. Qd5+ Kh8 49. Qa8+ Kh7 50. Qxe4+ Kg8 51. Qc4+ Kh8 52. Qh4+ Kg8 53. Qd8+ Kh7 54. Qd3+ Kh8 55. b5 Kg8 56. Qd5+ Kh8 57. Qg2 Qe3 58. Kh2 Qd4 59. Qe2 Kh7 60. h4 Kh8 61. Qc2 Kg8 62. Qc8+ Kh7 63. Qf5+ Kh8 64. Kh3 Qg1 65. Kg4 Qd4+ 66. Kh5 Qd1+ 67. g4 Qd6 68. g5 Qd1+ 69. Kg6 Qd6+ 70. Kf7 Qc7+ 71. Ke8 Qb8+ 72. Ke7 Qc7+ 73. Qd7 Qe5+ 74. Kf8 Qf4+ 75. Qf7 Qb8+ 76. Qe8 Qf4+ 77. Ke7+ Kh7 78. g6+ Kh6 79. Qh8+ Kxg6 80. h5+ Kg5 81. Qxg7+ Kh4 82. Qf6+ 1-0

[Event "Polanica Zdroj op-A 58th"]
[Site "Polanica Zdroj"]
[Date "2022.08.21"]
[Round "9"]
[White "Iwanczuk, Krzysztof"]
[Black "Nowak, Filip"]
[Result "0-1"]
[ECO "D30"]
[WhiteElo "1947"]
[BlackElo "1957"]
[PlyCount "54"]
[EventDate "2022.08.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nbd2 e6 5. Qc2 Nbd7 6. e4 dxe4 7. Nxe4 Nxe4 8. Qxe4 Nf6 9. Qc2 c5 10. Be3 cxd4 11. 0-0-0 Qa5 12. Nxd4 Be7 13. Kb1 0-0 14. Bd3 Bd7 15. h4 Rfc8 16. Qe2 a6 17. g4 b5 18. g5 bxc4 19. Bxc4 Nd5 20. Nb3 Qb4 21. Rd4 Bc5 22. Nxc5 Nc3+ 23. Ka1 Nxe2 24. Bxe2 Qxc5 25. Rxd7 Qc2 26. Bf3 Rab8 27. Rb1 a5 0-1

[Event "Polanica Zdroj op-A 58th"]
[Site "Polanica Zdroj"]
[Date "2022.08.20"]
[Round "8"]
[White "Skrzyczek, Tomasz"]
[Black "Iwanczuk, Krzysztof"]
[Result "0-1"]
[ECO "D80"]
[WhiteElo "1909"]
[BlackElo "1947"]
[PlyCount "106"]
[EventDate "2022.08.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Bg5 Ne4 6. Bf4 Nxc3 7. bxc3 c5 8. cxd5 Qxd5 9. e3 cxd4 10. cxd4 Nc6 11. Be2 0-0 12. 0-0 Bf5 13. Qa4 Rfc8 14. Bc4 Qd7 15. Bb5 a6 16. Bxc6 Qxc6 17. Qa3 e6 18. Rac1 Bf8 19. Qb2 Qb5 20. Qa1 Ba3 21. Rc5 Bxc5 22. dxc5 Qxc5 23. Be5 h6 24. Bh8 e5 25. Bxe5 Kh7 26. Bd4 Qc2 27. a4 b5 28. Qa3 Qc7 29. Ba1 Qc2 30. Bd4 Qc7 31. Ba1 bxa4 32. Qb2 f6 33. Qxf6 Rf8 34. Qb2 Rfc8 35. Qf6 Rf8 36. Qh4 Qd8 37. Qxa4 Qd7 38. Qh4 Qd8 39. Qa4 Rc8 40. Rd1 Ra8 41. Rf1 Qd7 42. Qh4 Qd8 43. Qa4 Rc8 44. Rd1 Rc4 45. Rf1 Rc8 46. Rd1 Rc4 47. Qb3 Rb4 48. Qa4 Rc4 49. Qb3 Rb4 50. Qa4 Rc4 51. Qb3 Rb4 52. Qxb4 Qxd1+ 53. Ne1 Qxa1 0-1

[Event "Polanica Zdroj op-A 58th"]
[Site "Polanica Zdroj"]
[Date "2022.08.19"]
[Round "7"]
[White "Smietanska, Wiktoria"]
[Black "Iwanczuk, Krzysztof"]
[Result "1/2-1/2"]
[ECO "B51"]
[WhiteElo "1919"]
[BlackElo "1947"]
[PlyCount "53"]
[EventDate "2022.08.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. Ba4 Ngf6 5. 0-0 Nxe4 6. Re1 Nef6 7. d4 cxd4 8. Nxd4 e6 9. Nb5 a6 10. Nxd6+ Bxd6 11. Qxd6 Qe7 12. Bf4 Qxd6 13. Bxd6 b5 14. Bb3 Bb7 15. Nc3 Nb6 16. a4 Nc4 17. Bb4 Nd5 18. Nxd5 Bxd5 19. axb5 axb5 20. Bc3 0-0 21. Bxc4 bxc4 22. f3 f6 23. Kf2 Kf7 24. Bb4 Rfb8 25. c3 Rd8 26. Ke2 e5 27. Red1 1/2-1/2

[Event "Polanica Zdroj op-A 58th"]
[Site "Polanica Zdroj"]
[Date "2022.08.18"]
[Round "6"]
[White "Iwanczuk, Krzysztof"]
[Black "Rog, Bartlomiej"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "1947"]
[BlackElo "2091"]
[PlyCount "64"]
[EventDate "2022.08.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 d6 2. d4 g6 3. Nc3 Bg7 4. Be3 Nf6 5. Qd2 a6 6. 0-0-0 b5 7. f3 Nbd7 8. Bh6 Bxh6 9. Qxh6 Bb7 10. e5 b4 11. Nb1 Nd5 12. e6 fxe6 13. Qg7 Rf8 14. Qxh7 Rf6 15. Re1 c5 16. Nd2 Qa5 17. Bc4 cxd4 18. Ne4 b3 19. Nxf6+ N7xf6 20. Qxg6+ Kd7 21. Ne2 bxa2 22. Bxa2 Qxa2 23. Nxd4 Rg8 24. Qd3 Qa1+ 25. Kd2 Rxg2+ 26. Ne2 Qa5+ 27. c3 Nf4 28. Qe3 N6d5 29. Qd4 Qb5 30. c4 Qb4+ 31. Kd1 Qb3+ 32. Kd2 e5 0-1

[Event "Polanica Zdroj op-A 58th"]
[Site "Polanica Zdroj"]
[Date "2022.08.17"]
[Round "5"]
[White "Czechowski, Jakub"]
[Black "Iwanczuk, Krzysztof"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2003"]
[BlackElo "1947"]
[PlyCount "69"]
[EventDate "2022.08.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. g3 c5 4. c3 Nc6 5. Bg2 e6 6. 0-0 Be7 7. b3 0-0 8. e3 b6 9. Qe2 a5 10. Rd1 a4 11. Bb2 Qc7 12. c4 Ba6 13. Nbd2 Rac8 14. Ne5 Na5 15. Rac1 axb3 16. axb3 Rfd8 17. Qf3 dxc4 18. Nexc4 Bb7 19. Qe2 Bxg2 20. Kxg2 Nc6 21. dxc5 bxc5 22. Qf3 Rb8 23. Bxf6 Bxf6 24. Ne4 Be7 25. Rxd8+ Rxd8 26. Rd1 Rd5 27. Nc3 Rxd1 28. Qxd1 Ne5 29. Nxe5 Qxe5 30. Qd3 f5 31. f4 Qc7 32. e4 Qb7 33. Qc4 Kf7 34. Kg1 g6 35. e5 1/2-1/2

[Event "Polanica Zdroj op-A 58th"]
[Site "Polanica Zdroj"]
[Date "2022.08.16"]
[Round "4"]
[White "Iwanczuk, Krzysztof"]
[Black "Antoniewicz, Jakub"]
[Result "0-1"]
[ECO "B32"]
[WhiteElo "1947"]
[BlackElo "1931"]
[PlyCount "78"]
[EventDate "2022.08.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 a6 6. Nd6+ Bxd6 7. Qxd6 Qe7 8. Qd1 Nf6 9. Nc3 d6 10. Bg5 Be6 11. Nd5 Bxd5 12. exd5 Nb8 13. Be2 h6 14. Be3 0-0 15. 0-0 Nbd7 16. c4 Nh7 17. b4 f5 18. f3 f4 19. Bf2 Ng5 20. Bd3 e4 21. Bxe4 Nxe4 22. Qe2 Rae8 23. Qxe4 Qxe4 24. fxe4 Rxe4 25. Rac1 Ne5 26. c5 Rd8 27. Rfd1 Rxb4 28. cxd6 Nf7 29. Rc7 Nxd6 30. Bc5 Re4 31. Bxd6 Rxd6 32. Rxb7 Re2 33. Rd4 Rg6 34. d6 Rgxg2+ 35. Kf1 Ref2+ 36. Ke1 Rxa2 37. Kf1 Rxh2 38. Kg1 Rag2+ 39. Kf1 f3 0-1

[Event "Polanica Zdroj op-A 58th"]
[Site "Polanica Zdroj"]
[Date "2022.08.15"]
[Round "3"]
[White "Iwanczuk, Krzysztof"]
[Black "Betkowski, Andrzej"]
[Result "1/2-1/2"]
[ECO "C18"]
[WhiteElo "1947"]
[BlackElo "2063"]
[PlyCount "62"]
[EventDate "2022.08.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Qa5 7. Bd2 Qa4 8. Qg4 Kf8 9. h4 Nc6 10. Nf3 Nge7 11. h5 h6 12. Ra2 b6 13. Bd3 Ba6 14. Qf4 Bxd3 15. cxd3 Qb5 16. Ke2 c4 17. Rd1 cxd3+ 18. Kf1 Na5 19. a4 Qc4 20. Ra3 Rc8 21. Rb1 Ke8 22. Ne1 Qa6 23. Raa1 Rf8 24. Kg1 Kd7 25. Qf3 Qc4 26. Rb4 Qa6 27. Nxd3 Rc4 28. Be1 Nac6 29. Rxc4 Qxc4 30. Qd1 Na5 31. Ra3 Qc7 1/2-1/2

[Event "Polanica Zdroj op-A 58th"]
[Site "Polanica Zdroj"]
[Date "2022.08.14"]
[Round "2"]
[White "Walkusz, Witoslaw"]
[Black "Iwanczuk, Krzysztof"]
[Result "0-1"]
[ECO "D85"]
[WhiteElo "2001"]
[BlackElo "1947"]
[PlyCount "76"]
[EventDate "2022.08.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. Na4 Bg7 6. e4 Nb6 7. Be3 0-0 8. Nf3 Nc6 9. Bb5 Na5 10. Rc1 c6 11. Be2 Nxa4 12. Qxa4 b5 13. Qa3 Be6 14. b3 Rc8 15. 0-0 Nb7 16. Rfd1 Nd6 17. d5 cxd5 18. Rxc8 Bxc8 19. Nd4 dxe4 20. Qxa7 Bd7 21. Nxb5 Bxb5 22. Bxb5 Nxb5 23. Qd7 Qxd7 24. Rxd7 e6 25. a4 Ra8 26. g4 Nc3 27. a5 Nd5 28. Bd2 Bf8 29. Rb7 Bd6 30. b4 Rb8 31. Rxb8+ Bxb8 32. b5 Kf8 33. g5 Ke7 34. Bc1 Kd7 35. Ba3 Bd6 36. Bb2 Bb4 37. a6 Bc5 38. Kg2 Nc7 0-1

[Event "Polanica Zdroj op-A 58th"]
[Site "Polanica Zdroj"]
[Date "2022.08.13"]
[Round "1"]
[White "Paprocki, Antoni"]
[Black "Iwanczuk, Krzysztof"]
[Result "1-0"]
[ECO "D10"]
[WhiteElo "1981"]
[BlackElo "1947"]
[PlyCount "37"]
[EventDate "2022.08.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. e4 b5 4. a4 c6 5. Nc3 b4 6. Na2 e5 7. Nf3 Bg4 8. Bxc4 Nd7 9. Qb3 Qf6 10. Nxe5 Nxe5 11. dxe5 Qg6 12. 0-0 Bc5 13. Kh1 Ne7 14. Be3 Bxe3 15. Qxe3 a5 16. f4 Qh6 17. Qc5 Be6 18. f5 Bxc4 19. f6 1-0

[Event "Warsaw Najdorf Memorial op-A"]
[Site "Warsaw"]
[Date "2022.07.17"]
[Round "9"]
[White "Iwanczuk, Krzysztof"]
[Black "Kotowicz, Kamil"]
[Result "1-0"]
[ECO "C03"]
[WhiteElo "1947"]
[BlackElo "1770"]
[PlyCount "85"]
[EventDate "2022.07.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 b6 5. Nf3 Bb7 6. Bb5+ c6 7. Bd3 Nd7 8. 0-0 Ngf6 9. Nxf6+ Nxf6 10. c3 Be7 11. Ne5 0-0 12. Qf3 Qc8 13. Qh3 c5 14. Ng4 g6 15. Bg5 Qd8 16. Ne5 cxd4 17. c4 Nd7 18. Nxd7 Qxd7 19. Bh6 Rfe8 20. f4 Bf8 21. Bxf8 Rxf8 22. Rae1 Rac8 23. g4 f5 24. Re5 Rc5 25. Rfe1 Rxe5 26. Rxe5 Qa4 27. gxf5 Qd1+ 28. Bf1 gxf5 29. Rxe6 Kh8 30. Qh6 Rg8+ 31. Kf2 Qc2+ 32. Re2 d3 33. Rxc2 dxc2 34. Qf6+ Rg7 35. Qc3 Be4 36. Be2 Kg8 37. Bf3 Bd3 38. Bd5+ Kf8 39. Qf6+ Ke8 40. Bc6+ Rd7 41. Bxd7+ Kxd7 42. Qc3 Be4 43. Ke3 1-0

[Event "Warsaw Najdorf Memorial op-A"]
[Site "Warsaw"]
[Date "2022.07.16"]
[Round "8"]
[White "Siekanska, Zuzanna"]
[Black "Iwanczuk, Krzysztof"]
[Result "1/2-1/2"]
[ECO "D85"]
[WhiteElo "1712"]
[BlackElo "1947"]
[PlyCount "91"]
[EventDate "2022.07.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Qa4+ Nd7 8. Nf3 0-0 9. Be2 Nb6 10. Qa3 Be6 11. Bg5 Re8 12. 0-0 Qd6 13. Qc1 Bc4 14. Re1 e5 15. dxe5 Bxe5 16. Nxe5 Qxe5 17. Bf3 Nd7 18. Qe3 Qe6 19. Rab1 Ba6 20. Bd1 Ne5 21. Ba4 c6 22. Bb3 Bc4 23. h3 f6 24. Bh4 b6 25. Rbd1 Rad8 26. f4 Bxb3 27. axb3 Rxd1 28. Rxd1 Qxb3 29. Qd4 c5 30. Qd2 Nf7 31. Bxf6 Rxe4 32. Re1 Qe6 33. Rxe4 Qxe4 34. Qd7 Qa8 35. f5 g5 36. Qe6 Qf8 37. Be7 Qb8 38. Bxg5 Qd6 39. Qe8+ Qf8 40. Qe6 Qd6 41. Qe3 Nxg5 42. Qxg5+ Kf7 43. Qh5+ Kg7 44. Qg5+ Kf7 45. Qh5+ Kg7 46. Qg5+ 1/2-1/2

[Event "Warsaw Najdorf Memorial op-A"]
[Site "Warsaw"]
[Date "2022.07.15"]
[Round "7"]
[White "Iwanczuk, Krzysztof"]
[Black "Skrzypczynski, Kacper"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "1947"]
[BlackElo "1793"]
[PlyCount "101"]
[EventDate "2022.07.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. 0-0 0-0 7. Re1 c6 8. a4 a5 9. h3 h6 10. Be3 Re8 11. Nh4 Qc7 12. Nf5 Bf8 13. Qf3 exd4 14. Bxd4 Ne5 15. Bxe5 Rxe5 16. Nxh6+ gxh6 17. Qxf6 Bg7 18. Qf3 Be6 19. Bxe6 Rxe6 20. Rad1 Rae8 21. Re2 Qb6 22. b3 Qb4 23. Na2 Qc5 24. Rde1 b5 25. axb5 cxb5 26. c3 Qa3 27. Nc1 Qc5 28. Re3 a4 29. Nd3 Qa3 30. bxa4 bxa4 31. Nf4 Rf6 32. Nd3 Rfe6 33. Nf4 Rf6 34. Qg4 Kh7 35. Rg3 Rg8 36. Nd5 Rg6 37. Qf5 Kh8 38. Rxg6 fxg6 39. Qxg6 Rf8 40. Qg3 Qb2 41. Ne7 Qxc3 42. Re3 Qc1+ 43. Kh2 Rf7 44. Qxd6 Rxf2 45. Rg3 Qc4 46. Nf5 Rxf5 47. exf5 Qf7 48. Rf3 Bf6 49. Qf4 Qg7 50. Qxa4 h5 51. Qe8+ 1-0

[Event "Warsaw Najdorf Memorial op-A"]
[Site "Warsaw"]
[Date "2022.07.14"]
[Round "6"]
[White "Fiedorek, Michal"]
[Black "Iwanczuk, Krzysztof"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2289"]
[BlackElo "1947"]
[PlyCount "73"]
[EventDate "2022.07.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 0-0 6. 0-0 d5 7. exd5 Nxd5 8. Bb5 Bd6 9. Re1 Re8 10. Nbd2 Nb6 11. a4 a6 12. Bxc6 bxc6 13. a5 Nd5 14. Nc4 f6 15. h3 Bf5 16. d4 e4 17. Nh2 Qd7 18. Nf1 Bg6 19. Qa4 Rad8 20. Nxd6 Qxd6 21. Ne3 Bf7 22. Qd1 g6 23. Ng4 Kh8 24. Qe2 Ra8 25. Nh6 Qd7 26. Bd2 f5 27. c4 Nf6 28. Nxf7+ Qxf7 29. Bf4 c5 30. d5 Nh5 31. Bd2 f4 32. Qg4 Kg8 33. Rad1 c6 34. dxc6 Qxc4 35. Bxf4 Nf6 36. Qg5 Re6 37. c7 1-0

[Event "Warsaw Najdorf Memorial op-A"]
[Site "Warsaw"]
[Date "2022.07.13"]
[Round "5"]
[White "Iwanczuk, Krzysztof"]
[Black "Bojczewski, Mateusz"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "1947"]
[BlackElo "1735"]
[PlyCount "108"]
[EventDate "2022.07.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nd2 e6 5. Nb3 Nd7 6. Nf3 Qc7 7. Be2 h6 8. 0-0 c5 9. dxc5 Ne7 10. c4 dxc4 11. Bxc4 Nxe5 12. Nxe5 Qxe5 13. Re1 Qc7 14. Bb5+ Nc6 15. Nd4 0-0-0 16. Bxc6 bxc6 17. Qa4 Bxc5 18. Nxc6 Rd6 19. Ne5 f6 20. Nc4 Rc6 21. Be3 Bc2 22. b3 Bxe3 23. Nxe3 Rd8 24. Nxc2 Rxc2 25. Qa6+ Kb8 26. Qxe6 Qf4 27. Re2 Rdd2 28. Qe8+ Kc7 29. Qe7+ Kb8 30. Qe8+ Kc7 31. Qf7+ Kb6 32. Re6+ Rd6 33. Rxd6+ Qxd6 34. Qxg7 Rxf2 35. Qg3 Qxg3 36. hxg3 Rf5 37. Rf1 Rxf1+ 38. Kxf1 Kc5 39. Ke2 Kb4 40. Kd3 Ka3 41. Kc4 Kxa2 42. b4 Ka3 43. b5 Ka4 44. g4 Ka5 45. Kc5 Ka4 46. b6 axb6+ 47. Kxb6 Kb4 48. Kc6 Kc4 49. Kd6 Kd4 50. Ke6 Ke4 51. Kxf6 Kf4 52. Kg6 Kxg4 53. Kxh6 Kg3 54. Kg5 Kxg2 1/2-1/2

[Event "Warsaw Najdorf Memorial op-A"]
[Site "Warsaw"]
[Date "2022.07.12"]
[Round "4"]
[White "Mazur, Maciej"]
[Black "Iwanczuk, Krzysztof"]
[Result "0-1"]
[ECO "B51"]
[WhiteElo "1757"]
[BlackElo "1947"]
[PlyCount "65"]
[EventDate "2022.07.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. c4 Ngf6 5. Nc3 g6 6. d4 cxd4 7. Nxd4 Bg7 8. 0-0 0-0 9. Bxd7 Bxd7 10. Be3 Rc8 11. b3 Ng4 12. Qd2 Nxe3 13. Qxe3 Qa5 14. a4 Rfe8 15. h3 a6 16. Rfd1 e6 17. Qd2 Bc6 18. Nxc6 bxc6 19. Rac1 d5 20. Nb1 Qb6 21. cxd5 cxd5 22. Rxc8 Rxc8 23. exd5 Qxb3 24. dxe6 Qxe6 25. Qa5 Bf8 26. Re1 Qf6 27. Qd5 Rc2 28. Nd2 Qc3 29. Nf3 Bc5 30. Re8+ Kg7 31. Qe5+ Qxe5 32. Nxe5 Rxf2 33. Rc8 0-1

[Event "Warsaw Najdorf Memorial op-A"]
[Site "Warsaw"]
[Date "2022.07.11"]
[Round "3"]
[White "Iwanczuk, Krzysztof"]
[Black "Dalkowski, Rafal"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "1947"]
[BlackElo "2120"]
[PlyCount "86"]
[EventDate "2022.07.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. h4 h5 5. Bd3 Bxd3 6. Qxd3 e6 7. Nf3 Ne7 8. Bg5 Nd7 9. Nbd2 Qc7 10. c4 0-0-0 11. 0-0 f6 12. Bf4 dxc4 13. Qxc4 Nd5 14. Bh2 f5 15. Ng5 N7b6 16. Qc2 Qd7 17. Nb3 Kb8 18. Rfd1 Na8 19. Rac1 Nac7 20. Nc5 Qe8 21. Qa4 Rc8 22. Rd3 b6 23. Rb3 Ka8 24. Nd3 Kb7 25. Nc5+ Ka8 26. Nd3 Kb7 27. Qc4 Be7 28. Nc5+ Bxc5 29. dxc5 b5 30. a4 Nb6 31. Qb4 Nbd5 32. Qa5 a6 33. Nf3 Rg8 34. Nd2 Ka7 35. axb5 cxb5 36. Nf3 b4 37. c6 Nb5 38. Nd4 Nxd4 39. Qc5+ Ka8 40. Qxd4 Rxc6 41. Ra1 Qc8 42. Bf4 Rc4 43. Qd3 Nxf4 0-1

[Event "Warsaw Najdorf Memorial op-A"]
[Site "Warsaw"]
[Date "2022.07.09"]
[Round "1"]
[White "Golubka, Petr"]
[Black "Iwanczuk, Krzysztof"]
[Result "1-0"]
[ECO "B20"]
[WhiteElo "2378"]
[BlackElo "1947"]
[PlyCount "85"]
[EventDate "2022.07.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 c5 2. a3 g6 3. Nf3 Bg7 4. d4 cxd4 5. Nxd4 Nf6 6. Nc3 d6 7. Bd3 Nc6 8. Nde2 0-0 9. 0-0 d5 10. exd5 Nxd5 11. Bd2 e5 12. Re1 h6 13. Nxd5 Qxd5 14. Nc3 Qd8 15. Be3 Be6 16. Qd2 Kh7 17. Rad1 f5 18. f3 Qf6 19. Qe2 Rac8 20. Nb5 b6 21. Nd6 Rcd8 22. Bb5 Ne7 23. c4 Bg8 24. Nb7 Rb8 25. Ba6 Qc6 26. Rd6 Qc7 27. Red1 Bxc4 28. Bxc4 Rxb7 29. Ba6 Nc8 30. R6d2 Rb8 31. Rd7 Qc6 32. Bb5 Qf6 33. f4 Rf7 34. fxe5 Qe6 35. Qc4 Rxd7 36. Rxd7 Qxc4 37. Bxc4 b5 38. Bb3 g5 39. Bd4 Nb6 40. Rxa7 Kh8 41. Kf1 Nc4 42. Bxc4 bxc4 43. Rc7 1-0

[Event "POL-chT Academic"]
[Site "Chorzow"]
[Date "2022.04.02"]
[Round "1.7"]
[White "Iwanczuk, Krzysztof"]
[Black "Brzezinski, Mateusz"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "1780"]
[BlackElo "2091"]
[PlyCount "63"]
[EventDate "2022.04.02"]
[EventType "team-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 c6 2. d4 d5 3. e5 c5 4. Nf3 Nc6 5. dxc5 e6 6. Be3 Nge7 7. c3 Nf5 8. Bd4 Nfxd4 9. cxd4 b6 10. Bb5 Bd7 11. Bxc6 Bxc6 12. cxb6 Qxb6 13. 0-0 Qxb2 14. Nbd2 Be7 15. Qc1 Qb6 16. Rb1 Qa6 17. Rb3 0-0 18. Qb2 Rac8 19. Rc1 Ba4 20. Rbc3 Rb8 21. Nb3 Bb4 22. Rc7 Ba5 23. R7c2 Qb5 24. Rc5 Qb4 25. Qc2 Bb6 26. Rc3 h6 27. Qd2 Bxb3 28. axb3 Ba5 29. Qe3 Qa3 30. Rd3 Rfc8 31. Rb1 Qa2 32. Nd2 0-1

[Event "POL-ch Academic"]
[Site "Chorzow"]
[Date "2022.04.01"]
[Round "2"]
[White "Iwanczuk, Krzysztof"]
[Black "Smolka, Marcin"]
[Result "0-1"]
[ECO "C58"]
[WhiteElo "1780"]
[BlackElo "2205"]
[PlyCount "78"]
[EventDate "2022.04.01"]
[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 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5+ c6 7. dxc6 bxc6 8. Bd3 Bc5 9. Ne4 Nxe4 10. Bxe4 Bxf2+ 11. Kxf2 Qh4+ 12. g3 Qxe4 13. Nc3 Qd4+ 14. Kg2 c5 15. Re1 Bb7+ 16. Kf1 0-0 17. d3 Qd7 18. Qe2 Qh3+ 19. Kg1 Nc6 20. Be3 Nd4 21. Bxd4 exd4 22. Ne4 Bc6 23. Nxc5 Rae8 24. Qf2 Qh5 25. Ne4 f5 26. Nd6 Rxe1+ 27. Rxe1 f4 28. Qe2 f3 29. Qe6+ Kh8 30. Nf7+ Qxf7 31. Qxf7 Rxf7 32. Kf2 g5 33. Re5 h6 34. Rc5 Rf6 35. c3 dxc3 36. bxc3 Re6 37. d4 Re2+ 38. Kf1 Be4 39. d5 Rxh2 0-1

[Event "Krakow op-B 32nd"]
[Site "Krakow"]
[Date "2022.01.04"]
[Round "9"]
[White "Iwanczuk, Krzysztof"]
[Black "Koudounis, Vasileios"]
[Result "1/2-1/2"]
[ECO "B48"]
[WhiteElo "1896"]
[BlackElo "2004"]
[PlyCount "88"]
[EventDate "2021.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. g4 Bb4 8. Nxc6 Bxc3+ 9. bxc3 dxc6 10. Qf3 e5 11. g5 Be6 12. Bh3 Bxh3 13. Qxh3 Rd8 14. 0-0 Ne7 15. Rab1 c5 16. Qg4 Ng6 17. Rfd1 0-0 18. c4 b6 19. Rb3 Ne7 20. Rbd3 Rxd3 21. Rxd3 Rd8 22. Qd1 Rxd3 23. Qxd3 g6 24. f3 Kg7 25. Bf2 f6 26. gxf6+ Kxf6 27. Qd2 Ke6 28. Bh4 Qd6 29. Qxd6+ Kxd6 30. Bxe7+ Kxe7 31. a4 Kf6 32. Kf2 Kg5 33. Kg3 Kf6 34. Kg4 h6 35. Kh4 Ke6 36. Kg4 Kf6 37. Kh4 Ke7 38. Kg3 Ke6 39. Kg4 Kd6 40. h4 Ke6 41. Kh3 Kf7 42. Kg4 Ke6 43. Kh3 Kf6 44. Kg3 Kf7 1/2-1/2

[Event "Krakow op-B 32nd"]
[Site "Krakow"]
[Date "2022.01.03"]
[Round "8"]
[White "Vishal Choudary, B."]
[Black "Iwanczuk, Krzysztof"]
[Result "0-1"]
[ECO "A03"]
[WhiteElo "1846"]
[BlackElo "1896"]
[PlyCount "84"]
[EventDate "2021.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 g6 3. e3 Nf6 4. Be2 Bg7 5. 0-0 0-0 6. d3 c5 7. Qe1 Nc6 8. Nbd2 Qc7 9. Qh4 e5 10. Nxe5 Nxe5 11. fxe5 Qxe5 12. Nf3 Qe7 13. Ng5 h6 14. Nh3 Bxh3 15. Qxh3 Rfe8 16. Kh1 Rac8 17. e4 c4 18. Bxh6 cxd3 19. cxd3 Rc2 20. Bd1 Rxb2 21. Ba4 Rd8 22. e5 Qxe5 23. Rae1 Re2 24. Bxg7 Kxg7 25. Qh4 Rxe1 26. Rxe1 Qd6 27. Rf1 Rh8 28. Qf4 Qxf4 29. Rxf4 Rc8 30. h3 a6 31. g4 g5 32. Rf3 b5 33. Bb3 Rc3 34. Kg2 d4 35. h4 Nxg4 36. Rxf7+ Kg6 37. Ra7 gxh4 38. Rxa6+ Kg5 39. Ra5 Rxd3 40. Rxb5+ Kf4 41. Rh5 Rg3+ 42. Kf1 h3 0-1

[Event "Krakow op-B 32nd"]
[Site "Krakow"]
[Date "2022.01.02"]
[Round "7"]
[White "Iwanczuk, Krzysztof"]
[Black "Kumor, Lukasz"]
[Result "0-1"]
[ECO "C11"]
[WhiteElo "1896"]
[BlackElo "2075"]
[PlyCount "54"]
[EventDate "2021.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 cxd4 8. Nxd4 Bc5 9. Qd2 0-0 10. 0-0-0 a6 11. a3 Nxd4 12. Bxd4 b5 13. Bxc5 Nxc5 14. b4 Nd7 15. h4 Bb7 16. h5 f6 17. h6 g6 18. f5 gxf5 19. g4 fxg4 20. Qf4 Nxe5 21. Rg1 Ng6 22. Rxg4 f5 23. Rg3 Rc8 24. Be2 Qf6 25. Qd2 f4 26. Rh3 Rc7 27. Rg1 Rfc8 0-1

[Event "Krakow op-B 32nd"]
[Site "Krakow"]
[Date "2022.01.02"]
[Round "6"]
[White "Iwanczuk, Krzysztof"]
[Black "Mirski, Michal"]
[Result "1-0"]
[ECO "B42"]
[WhiteElo "1896"]
[BlackElo "2039"]
[PlyCount "65"]
[EventDate "2021.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Qc7 6. 0-0 Nf6 7. Qe2 d6 8. c4 Nbd7 9. Nc3 b6 10. Be3 Bb7 11. Rac1 Be7 12. Rfd1 0-0 13. f3 Rac8 14. b3 Rfd8 15. Qf2 Qb8 16. Na4 d5 17. exd5 exd5 18. Nf5 Ba3 19. Nxb6 Nxb6 20. Bxb6 Rd7 21. Rb1 dxc4 22. bxc4 Qe5 23. Bd4 Rxd4 24. Nxd4 Bc5 25. Rxb7 Rd8 26. Kh1 Rxd4 27. Qe2 Qd6 28. Bc2 g5 29. Rxd4 Qxd4 30. Rb1 Qh4 31. Qe5 Bd4 32. Qd6 Nh5 33. g3 1-0

[Event "Krakow op-B 32nd"]
[Site "Krakow"]
[Date "2021.12.31"]
[Round "5"]
[White "Skurniak, Szymon"]
[Black "Iwanczuk, Krzysztof"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2050"]
[BlackElo "1896"]
[PlyCount "83"]
[EventDate "2021.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[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. Bd3 e5 7. Nde2 Be7 8. 0-0 b5 9. f4 Nbd7 10. Ng3 exf4 11. Nf5 0-0 12. Bxf4 Ne5 13. Nxe7+ Qxe7 14. Bg5 Qa7+ 15. Kh1 Nfg4 16. Qe2 h6 17. Bd2 Ng6 18. a4 b4 19. Nd5 a5 20. h3 N4e5 21. Be3 Qb7 22. Nb6 Rb8 23. Nxc8 Rfxc8 24. Ba6 Qxe4 25. Bxc8 Rxc8 26. Rf2 Nc4 27. Bc1 Qd4 28. Rb1 Kf8 29. c3 bxc3 30. bxc3 Qxc3 31. Qe6 Nce5 32. Bb2 Qc5 33. Rc1 Re8 34. Rxc5 Rxe6 35. Rxa5 Ke8 36. Ra8+ Kd7 37. Bxe5 Nxe5 38. a5 d5 39. a6 Kc7 40. Ra2 Nc6 41. a7 Kb7 42. Rb8+ 1-0

[Event "Krakow op-B 32nd"]
[Site "Krakow"]
[Date "2021.12.30"]
[Round "4"]
[White "Iwanczuk, Krzysztof"]
[Black "Fritz, Antoni"]
[Result "1/2-1/2"]
[ECO "B05"]
[WhiteElo "1896"]
[BlackElo "2021"]
[PlyCount "60"]
[EventDate "2021.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. Be2 e6 6. 0-0 Be7 7. c4 Nb6 8. Nc3 0-0 9. h3 Bh5 10. Be3 d5 11. c5 Bxf3 12. gxf3 Nc8 13. f4 Bh4 14. Bd3 f5 15. Kh2 g6 16. Rg1 Rf7 17. Qd2 Qf8 18. f3 Nc6 19. Ne2 Kh8 20. b4 Nd8 21. a4 Qh6 22. Raf1 Rg7 23. Rg2 Nf7 24. b5 Ne7 25. a5 g5 26. fxg5 Bxg5 27. f4 Bh4 28. Rxg7 Qxg7 29. Rg1 Qh6 30. Rg2 Rg8 1/2-1/2

[Event "Krakow op-B 32nd"]
[Site "Krakow"]
[Date "2021.12.29"]
[Round "3"]
[White "Gromovs, Sergejs"]
[Black "Iwanczuk, Krzysztof"]
[Result "1/2-1/2"]
[ECO "D85"]
[WhiteElo "2094"]
[BlackElo "1896"]
[PlyCount "97"]
[EventDate "2021.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 c5 8. Rb1 0-0 9. Be2 cxd4 10. cxd4 Qa5+ 11. Bd2 Qxa2 12. 0-0 Bg4 13. Be3 Nc6 14. Rxb7 Rab8 15. Rxb8 Rxb8 16. h3 Bd7 17. Bd3 a5 18. Qc1 Qb2 19. Qc5 Qb4 20. Qd5 Qd6 21. Qxd6 exd6 22. Bc4 a4 23. Ng5 Nxd4 24. Bxf7+ Kf8 25. Bd5 h6 26. Nf7 Be6 27. Bxd4 Bxf7 28. Bxg7+ Kxg7 29. Bxf7 Kxf7 30. Ra1 Ra8 31. Ra3 Ke6 32. f4 d5 33. e5 d4 34. Kf2 g5 35. g3 gxf4 36. gxf4 Kf5 37. Kf3 Ra6 38. h4 h5 39. e6 Rxe6 40. Rxa4 Re3+ 41. Kf2 Ke4 42. Ra5 Rf3+ 43. Ke1 Kxf4 44. Rxh5 Kg4 45. Rh8 Rh3 46. Kd2 Rxh4 47. Rxh4+ Kxh4 48. Kd3 Kh3 49. Kxd4 1/2-1/2

[Event "Krakow op-B 32nd"]
[Site "Krakow"]
[Date "2021.12.28"]
[Round "2"]
[White "Iwanczuk, Krzysztof"]
[Black "Gorkiewicz, Mateusz"]
[Result "1-0"]
[ECO "C58"]
[WhiteElo "1896"]
[BlackElo "2028"]
[PlyCount "83"]
[EventDate "2021.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5+ c6 7. dxc6 bxc6 8. Bd3 Nd5 9. Nf3 Bd6 10. 0-0 0-0 11. Re1 Re8 12. Nc3 f5 13. Bf1 e4 14. Nxd5 cxd5 15. Nd4 Be5 16. c3 Qc7 17. h3 Bxd4 18. cxd4 Nc6 19. d3 Be6 20. dxe4 fxe4 21. Be3 Ne7 22. Rc1 Qd6 23. Qd2 Ng6 24. Rc5 h6 25. g3 Rab8 26. Rec1 Rb6 27. b4 Qf8 28. b5 h5 29. a4 h4 30. a5 Rb7 31. g4 Reb8 32. Rc7 Rxb5 33. Bxb5 Rxb5 34. Qe2 Rxa5 35. R1c6 Ra1+ 36. Kg2 Ra2 37. Qxa2 Qf3+ 38. Kh2 Nf4 39. Bxf4 Qxf4+ 40. Kg1 Bxg4 41. Qxd5+ Kh7 42. Qe5 1-0

[Event "Krakow op-B 32nd"]
[Site "Krakow"]
[Date "2021.12.27"]
[Round "1"]
[White "Golenia, Wojciech"]
[Black "Iwanczuk, Krzysztof"]
[Result "0-1"]
[ECO "A21"]
[WhiteElo "2059"]
[BlackElo "1896"]
[PlyCount "111"]
[EventDate "2021.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. d3 Bb4 6. Nf3 0-0 7. 0-0 Bxc3 8. bxc3 d6 9. Qb3 Kh8 10. c5 dxc5 11. Ba3 h6 12. Bxc5 Re8 13. Nh4 e4 14. Rfd1 Qd5 15. Qxd5 Nxd5 16. Rac1 Nf6 17. Bh1 Be6 18. c4 g5 19. Ng2 Rad8 20. Ne3 b6 21. Ba3 Nd4 22. Bb2 c5 23. Nd5 Bxd5 24. cxd5 Nxe2+ 25. Kf1 Nd4 26. dxe4 fxe4 27. Rxd4 cxd4 28. Bxd4 Rd6 29. f3 Kg8 30. fxe4 Nxe4 31. Re1 Nd2+ 32. Kf2 Rxe1 33. Kxe1 Nc4 34. Ke2 Rd8 35. Kd3 Nd6 36. Bf6 Re8 37. Bg2 Kf7 38. Bc3 g4 39. Bb4 Nf5 40. Be4 Kg6 41. Bd2 h5 42. Bf4 Kf6 43. Bd2 Nd6 44. Bc3+ Kf7 45. Bh7 Rc8 46. Bb2 Re8 47. a4 Re1 48. Kd2 Rh1 49. Bd4 Rxh2+ 50. Kc3 Re2 51. Bd3 Ne4+ 52. Kc4 Nxg3 53. Bxe2 Nxe2 54. Be3 h4 55. a5 h3 56. Bxb6 0-1

[Event "Polanica Zdroj op-C 56th"]
[Site "Polanica Zdroj"]
[Date "2020.08.23"]
[Round "9"]
[White "Iwanczuk, Krzysztof"]
[Black "Komendecki, Antoni"]
[Result "0-1"]
[ECO "B27"]
[WhiteElo "1929"]
[BlackElo "1631"]
[PlyCount "68"]
[EventDate "2020.08.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 198 Extra"]
[Source "ChessBase"]
[SourceDate "2020.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.11.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Qxd4 Nf6 5. Nc3 Nc6 6. Qa4 d6 7. e5 dxe5 8. Nxe5 Bd7 9. Nxd7 Qxd7 10. Be3 Bg7 11. Rd1 Qc8 12. Be2 0-0 13. 0-0 a6 14. Rfe1 Qf5 15. g4 Qc8 16. g5 Nd7 17. Qh4 e6 18. Ne4 Ne7 19. Bg4 Nf5 20. Bxf5 exf5 21. Nf6+ Nxf6 22. gxf6 Bh8 23. c3 Qc6 24. Bd4 Rfd8 25. Be5 Re8 26. Re3 Rxe5 27. Rxe5 Bxf6 28. Qf4 Bxe5 29. Qxe5 Re8 30. Qf4 Re4 31. Qb8+ Kg7 32. f3 Re2 33. Qf4 Rxb2 34. Rd8 Qxc3 0-1

[Event "Polanica Zdroj op-C 56th"]
[Site "Polanica Zdroj"]
[Date "2020.08.22"]
[Round "8"]
[White "Raclawicki, Kacper"]
[Black "Iwanczuk, Krzysztof"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "1879"]
[BlackElo "1929"]
[PlyCount "46"]
[EventDate "2020.08.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 198 Extra"]
[Source "ChessBase"]
[SourceDate "2020.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.11.30"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 d5 3. e3 c5 4. Nc3 cxd4 5. exd4 a6 6. Nf3 Bg4 7. h3 Bxf3 8. Qxf3 Nc6 9. 0-0-0 e6 10. g4 Bd6 11. g5 Ne4 12. Nxe4 dxe4 13. Qxe4 Bxf4+ 14. Qxf4 Qd5 15. Bd3 Qxa2 16. c3 0-0 17. Qe4 g6 18. h4 Na5 19. h5 Rac8 20. hxg6 fxg6 21. f4 Rf7 22. Bc2 Nc4 23. Qe5 Nxe5 0-1

[Event "Polanica Zdroj op-C 56th"]
[Site "Polanica Zdroj"]
[Date "2020.08.21"]
[Round "7"]
[White "Iwanczuk, Krzysztof"]
[Black "Siekanska, Zuzanna"]
[Result "1-0"]
[ECO "B81"]
[WhiteElo "1929"]
[BlackElo "1680"]
[PlyCount "55"]
[EventDate "2020.08.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 198 Extra"]
[Source "ChessBase"]
[SourceDate "2020.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.11.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. Nc3 d6 4. d4 cxd4 5. Nxd4 Nf6 6. Be3 a6 7. g4 b5 8. g5 Nfd7 9. a3 Nb6 10. h4 N8d7 11. f4 Bb7 12. Qf3 Rc8 13. h5 Nc4 14. Bxc4 Rxc4 15. g6 Qf6 16. gxf7+ Kxf7 17. 0-0-0 Nc5 18. Rhg1 Be7 19. f5 e5 20. Ne6 Nxe6 21. fxe6+ Ke8 22. Qg4 Bc8 23. Nd5 Qxe6 24. Qxg7 Rf8 25. Qxh7 Bb7 26. Rg7 Rf7 27. h6 Bf6 28. Qg8+ 1-0

[Event "Polanica Zdroj op-C 56th"]
[Site "Polanica Zdroj"]
[Date "2020.08.20"]
[Round "6"]
[White "Janzer, Hubert"]
[Black "Iwanczuk, Krzysztof"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "1893"]
[BlackElo "1929"]
[PlyCount "97"]
[EventDate "2020.08.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 198 Extra"]
[Source "ChessBase"]
[SourceDate "2020.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.11.30"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 d5 3. e3 c5 4. c3 Nc6 5. Nd2 Bf5 6. Ngf3 Qb6 7. Qb3 c4 8. Qxb6 axb6 9. Be2 e6 10. 0-0 b5 11. Nh4 Be4 12. f3 Bd3 13. Bxd3 cxd3 14. g4 Be7 15. Ng2 b4 16. c4 0-0 17. g5 Nh5 18. cxd5 exd5 19. h4 Ra6 20. Nb3 Rfa8 21. Rab1 Rxa2 22. Rfd1 Rc8 23. Nc1 Raa8 24. Nxd3 Na5 25. e4 Nxf4 26. Ngxf4 dxe4 27. fxe4 b3 28. Nd5 Bd8 29. Nc5 b6 30. Nd7 Rc2 31. Ne3 f6 32. gxf6 gxf6 33. e5 fxe5 34. Rf1 Bxh4 35. Nxc2 bxc2 36. Rbc1 Rc8 37. Nxb6 Rc6 38. d5 Rxb6 39. Rxc2 Bg5 40. Kg2 Rd6 41. Rc5 Nb3 42. Rc8+ Bd8 43. Rd1 Nd4 44. Re1 Rxd5 45. Rxe5 Rxe5 46. Rxd8+ Kg7 47. Rxd4 Re2+ 48. Kg3 Rxb2 49. Rd6 1/2-1/2

[Event "Polanica Zdroj op-C 56th"]
[Site "Polanica Zdroj"]
[Date "2020.08.19"]
[Round "5"]
[White "Iwanczuk, Krzysztof"]
[Black "Szopa, Emilia"]
[Result "1/2-1/2"]
[ECO "B33"]
[WhiteElo "1929"]
[BlackElo "1628"]
[PlyCount "96"]
[EventDate "2020.08.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 198 Extra"]
[Source "ChessBase"]
[SourceDate "2020.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.11.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Nd5 Nxd5 8. exd5 Nb8 9. a4 a6 10. Na3 Be7 11. Be2 0-0 12. 0-0 f5 13. f4 Bf6 14. Nc4 Nd7 15. a5 Qc7 16. Kh1 b5 17. axb6 Nxb6 18. Na5 Bd7 19. c3 Kh8 20. Be3 exf4 21. Bxf4 Be5 22. Be3 Qd8 23. Bxb6 Qxb6 24. Nc4 Qb7 25. Nxe5 dxe5 26. Qd2 f4 27. c4 Rfb8 28. Ra2 Qb3 29. Rfa1 Bf5 30. Rxa6 Rxa6 31. Rxa6 Bc2 32. Qc1 Be4 33. Ra3 Qb6 34. c5 Qd8 35. d6 Bc6 36. Ra6 Qc8 37. Qc2 e4 38. Qc3 f3 39. gxf3 exf3 40. Rxc6 Qxc6 41. Bxf3 Qb5 42. Kg2 Rc8 43. b4 Qd7 44. Qd4 Rf8 45. Qe4 h6 46. Bg4 Qf7 47. Bf3 Qf6 48. d7 Qg5+ 1/2-1/2

[Event "Polanica Zdroj op-C 56th"]
[Site "Polanica Zdroj"]
[Date "2020.08.18"]
[Round "4"]
[White "Plichta, Krzysztof"]
[Black "Iwanczuk, Krzysztof"]
[Result "1/2-1/2"]
[ECO "B04"]
[WhiteElo "1605"]
[BlackElo "1929"]
[PlyCount "97"]
[EventDate "2020.08.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 198 Extra"]
[Source "ChessBase"]
[SourceDate "2020.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.11.30"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Bc4 c6 5. Nf3 dxe5 6. Nxe5 Nd7 7. Nc3 Nxe5 8. dxe5 Be6 9. Nxd5 Bxd5 10. Bxd5 cxd5 11. Be3 e6 12. 0-0 Be7 13. c4 0-0 14. cxd5 Qxd5 15. Qxd5 exd5 16. Rfd1 Rfd8 17. Rd3 f6 18. exf6 Bxf6 19. Bd4 Bxd4 20. Rxd4 Rac8 21. Rd2 Kf7 22. Kf1 Ke6 23. Re1+ Kd6 24. Red1 Ke5 25. Re1+ Kf6 26. Red1 Rc5 27. Ke2 a5 28. Kd3 a4 29. Re2 a3 30. Rde1 axb2 31. Rxb2 Rd7 32. Reb1 Rcc7 33. Rb6+ Ke7 34. Re1+ Kd8 35. Rb5 d4 36. Rb3 Rc5 37. Re4 Rc1 38. Rb4 Rd1+ 39. Ke2 Ra1 40. Rb2 Rc1 41. h4 Kc7 42. Kd2 Rc4 43. Rc2 b5 44. Kd3 Rxc2 45. Kxc2 Kc6 46. Kd3 Ra7 47. Re2 Kd5 48. Rb2 Ra3+ 49. Rb3 1/2-1/2

[Event "Polanica Zdroj op-C 56th"]
[Site "Polanica Zdroj"]
[Date "2020.08.17"]
[Round "3"]
[White "Iwanczuk, Krzysztof"]
[Black "Kieca, Aleksandra"]
[Result "1-0"]
[ECO "B28"]
[WhiteElo "1929"]
[BlackElo "1594"]
[PlyCount "61"]
[EventDate "2020.08.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 198 Extra"]
[Source "ChessBase"]
[SourceDate "2020.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.11.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 a6 3. c3 d5 4. exd5 Qxd5 5. d4 Nf6 6. dxc5 Qxc5 7. Be3 Qc7 8. h3 e5 9. Nbd2 Be7 10. Nc4 Nbd7 11. a4 b6 12. Be2 0-0 13. 0-0 Bb7 14. Qb3 Nd5 15. Rfd1 Nxe3 16. Nxe3 Nc5 17. Qc4 a5 18. Nd5 Bxd5 19. Rxd5 e4 20. Nd4 Rfd8 21. Nb5 Qb7 22. Rad1 Rxd5 23. Rxd5 Rc8 24. Bg4 Rd8 25. Rxd8+ Bxd8 26. Nd6 Qe7 27. Qd5 Nxa4 28. Nxf7 Kf8 29. Nxd8 e3 30. Ne6+ Ke8 31. Qb5+ 1-0

[Event "Polanica Zdroj op-C 56th"]
[Site "Polanica Zdroj"]
[Date "2020.08.16"]
[Round "2"]
[White "Raczek, Krzysztof"]
[Black "Iwanczuk, Krzysztof"]
[Result "1-0"]
[ECO "B38"]
[WhiteElo "1712"]
[BlackElo "1929"]
[PlyCount "115"]
[EventDate "2020.08.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 198 Extra"]
[Source "ChessBase"]
[SourceDate "2020.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.11.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Nf6 6. Nc3 d6 7. Be2 Bg7 8. Be3 0-0 9. 0-0 Nxd4 10. Bxd4 Bd7 11. Qd2 Bc6 12. f3 a5 13. b3 Nd7 14. Be3 Nc5 15. Rab1 e6 16. Rfd1 Be5 17. g3 f5 18. exf5 Rxf5 19. Bxc5 Bxc3 20. Qxd6 Qxd6 21. Bxd6 Bxf3 22. Bxf3 Rxf3 23. Kg2 Rf7 24. a3 e5 25. Rbc1 Bd4 26. Rc2 Rf6 27. c5 Rc8 28. Re2 Bxc5 29. Rc2 Rd8 30. Rxc5 Rdxd6 31. Rxd6 Rxd6 32. Rxa5 Rd2+ 33. Kf1 Rxh2 34. Rb5 Kf7 35. Rxb7+ Ke6 36. a4 h5 37. a5 Ra2 38. b4 Kf5 39. Rb6 g5 40. a6 Kg4 41. Rc6 e4 42. b5 Kf3 43. Rf6+ Kxg3 44. Rf7 h4 45. a7 h3 46. b6 h2 47. Rh7 g4 48. Rxh2 Kxh2 49. b7 g3 50. b8Q Ra1+ 51. Ke2 Rxa7 52. Qxa7 g2 53. Qh7+ Kg3 54. Qg6+ Kh2 55. Qh5+ Kg3 56. Qg5+ Kh2 57. Qh4+ Kg1 58. Ke3 1-0

[Event "Polanica Zdroj op-C 56th"]
[Site "Polanica Zdroj"]
[Date "2020.08.15"]
[Round "1"]
[White "Iwanczuk, Krzysztof"]
[Black "Wojcik, Jagoda"]
[Result "1-0"]
[ECO "C24"]
[WhiteElo "1929"]
[BlackElo "1640"]
[PlyCount "53"]
[EventDate "2020.08.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 198 Extra"]
[Source "ChessBase"]
[SourceDate "2020.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.11.30"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. d4 exd4 4. Nf3 Bb4+ 5. c3 dxc3 6. bxc3 Ba5 7. e5 d5 8. exf6 dxc4 9. Qa4+ Nc6 10. fxg7 Qe7+ 11. Be3 Rg8 12. Nd4 Qf6 13. 0-0 Bd7 14. Nxc6 Bxc6 15. Qxa5 Rxg7 16. f3 Bxf3 17. g3 b6 18. Qa3 Qc6 19. Bd4 Rg6 20. Nd2 Bd5 21. Rae1+ Re6 22. Bf6 Kd7 23. Bg5 Bh1 24. Rxf7+ Kc8 25. Qa6+ Qb7 26. Qxb7+ Kxb7 27. Rxe6 1-0

[Event "POL-ch U18"]
[Site "Szklarska Poreba"]
[Date "2020.03.13"]
[Round "8"]
[White "Derylo, Kamil"]
[Black "Iwanczuk, Krzysztof"]
[Result "1-0"]
[ECO "E60"]
[WhiteElo "2083"]
[BlackElo "1887"]
[PlyCount "105"]
[EventDate "2020.03.07"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. d4 Bg7 4. e3 0-0 5. Be2 c5 6. d5 e6 7. Nc3 exd5 8. cxd5 d6 9. 0-0 Re8 10. Nd2 Na6 11. e4 Nc7 12. a4 Rb8 13. f3 b6 14. Nc4 a6 15. Bf4 Bf8 16. Qd2 b5 17. axb5 axb5 18. e5 bxc4 19. exf6 Qxf6 20. Bxc4 Rb4 21. b3 Bg7 22. Rac1 Ba6 23. Ne4 Qd4+ 24. Rf2 Bxc4 25. bxc4 Rxc4 26. Rxc4 Qxc4 27. Nxd6 Qxf4 28. Nxe8 Qxd2 29. Rxd2 Nxe8 30. d6 Bf6 31. d7 Nc7 32. d8Q+ Bxd8 33. Rxd8+ Kg7 34. Kf2 Kf6 35. g4 Ne6 36. Ra8 h5 37. gxh5 gxh5 38. Ke3 Ke5 39. Rh8 Nf4 40. Re8+ Ne6 41. h3 Kf5 42. Rg8 Nf4 43. Rc8 Ne6 44. f4 Kg6 45. Ke4 f5+ 46. Ke5 Nd4 47. Rxc5 Nf3+ 48. Ke6 h4 49. Rc3 Nd4+ 50. Ke5 Ne2 51. Rc6+ Kh5 52. Rf6 Ng3 53. Rxf5+ 1-0

[Event "POL-ch U18"]
[Site "Szklarska Poreba"]
[Date "2020.03.13"]
[Round "7"]
[White "Iwanczuk, Krzysztof"]
[Black "Piekielny, Pawel"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "1887"]
[BlackElo "2104"]
[PlyCount "161"]
[EventDate "2020.03.07"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 e6 3. e3 c5 4. Nf3 Nc6 5. c3 d5 6. Nbd2 Bd6 7. Bg3 0-0 8. Bd3 Re8 9. Qe2 e5 10. dxc5 Bxc5 11. e4 d4 12. 0-0 Bg4 13. h3 Bxf3 14. Qxf3 dxc3 15. bxc3 Nd7 16. Bc4 Qf6 17. Qg4 Nb6 18. Bd5 Rac8 19. Nf3 Nxd5 20. exd5 Na5 21. Bxe5 Qg6 22. Qxg6 hxg6 23. Rfe1 f6 24. Bg3 Red8 25. Rad1 Bd6 26. Bxd6 Rxd6 27. Re6 Rd7 28. Rd3 Rc5 29. d6 Rc6 30. Nh4 Kh7 31. Rg3 Rdxd6 32. Rxd6 Rxd6 33. Nxg6 Rd1+ 34. Kh2 Rd2 35. Nf8+ Kh8 36. f4 Rxa2 37. Rd3 Kg8 38. Ng6 Kf7 39. f5 Rf2 40. Rd5 Nc6 41. Kg1 Rb2 42. Rd7+ Ke8 43. Rxg7 a5 44. h4 a4 45. h5 a3 46. h6 a2 47. Rg8+ Kd7 48. Ra8 Rb1+ 49. Kh2 a1Q 50. Rxa1 Rxa1 51. Nf8+ Ke7 52. h7 Ra8 53. h8Q Rxf8 54. Qh4 Rf7 55. Qe4+ Kf8 56. g4 Kg7 57. Kg3 Ne7 58. Qe6 Ng8 59. g5 fxg5 60. Qg6+ Kf8 61. Qd6+ Kg7 62. Qg6+ Kf8 63. Kg4 Ne7 64. Qh6+ Ke8 65. f6 Nd5 66. Kxg5 Nxf6 67. Qh8+ Ke7 68. Qc8 Ne4+ 69. Kg4 Nd6 70. Qc5 b5 71. Qe5+ Kd7 72. Qd5 Rf5 73. Qxf5+ Nxf5 74. Kxf5 Kd6 75. Ke4 Kc5 76. Kd3 Kd5 77. Kc2 Kc4 78. Kb2 Kd3 79. Kb3 Kd2 80. c4 bxc4+ 81. Kxc4 1/2-1/2

[Event "POL-ch U18"]
[Site "Szklarska Poreba"]
[Date "2020.03.12"]
[Round "6"]
[White "Dzwierzynski, Bartosz"]
[Black "Iwanczuk, Krzysztof"]
[Result "1/2-1/2"]
[ECO "D98"]
[WhiteElo "1944"]
[BlackElo "1887"]
[PlyCount "122"]
[EventDate "2020.03.07"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 dxc4 6. Qxc4 Nc6 7. e4 Bg4 8. Be3 0-0 9. Be2 Bxf3 10. Bxf3 e5 11. d5 Nd4 12. Ne2 Re8 13. 0-0-0 c5 14. dxc6 Rc8 15. Kb1 Rxc6 16. Qa4 Ra6 17. Qb4 Rb6 18. Qd2 Qe7 19. Nxd4 exd4 20. Bxd4 Nxe4 21. Qe3 Bxd4 22. Qxd4 Rb4 23. Qe3 Qe5 24. Qa3 Nc3+ 25. Ka1 Nxd1 26. Qxb4 Nxf2 27. Rf1 Nd3 28. Qd2 Nc5 29. h3 Re7 30. Rd1 a5 31. Qc2 a4 32. Rd5 Qe1+ 33. Rd1 Qb4 34. Qc3 Qxc3 35. bxc3 a3 36. Kb1 Re3 37. Kc2 b6 38. Rb1 Re6 39. c4 Kg7 40. Kc3 Re3+ 41. Kb4 Kf6 42. Kb5 Rc3 43. Kb4 Rd3 44. Rd1 Rxd1 45. Bxd1 Ke5 46. Kxa3 Na6 47. Ka4 Nc7 48. Kb4 Kd4 49. a4 f5 50. Bc2 h5 51. Bd1 h4 52. Bf3 g5 53. Bb7 g4 54. hxg4 fxg4 55. Bc8 h3 56. gxh3 g3 57. Bb7 Na6+ 58. Kb5 Nc5 59. Bg2 Nxa4 60. h4 Nb2 61. h5 Ke5 1/2-1/2

[Event "POL-ch U18"]
[Site "Szklarska Poreba"]
[Date "2020.03.11"]
[Round "5"]
[White "Iwanczuk, Krzysztof"]
[Black "Kucharski, Bartlomiej"]
[Result "1-0"]
[ECO "C24"]
[WhiteElo "1887"]
[BlackElo "2050"]
[PlyCount "67"]
[EventDate "2020.03.07"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. d4 exd4 4. Nf3 Nxe4 5. Qxd4 Nf6 6. Nc3 Be7 7. Bg5 Nc6 8. Qh4 d6 9. 0-0-0 Be6 10. Bb5 0-0 11. Bd3 g6 12. Rhe1 h5 13. Bxg6 fxg6 14. Rxe6 Kg7 15. Rde1 Qd7 16. Qf4 Ng8 17. Qe4 Ne5 18. Rxe7+ Nxe7 19. Nxe5 dxe5 20. Qxe5+ Kg8 21. Bxe7 Rf5 22. Qg3 Qc6 23. Bg5 Raf8 24. f3 R8f7 25. h4 Rc5 26. Re4 Kh7 27. Qe1 Rcf5 28. Re8 Qc4 29. Qe2 Qc5 30. Be3 Qb4 31. Ne4 Rd7 32. Bd2 Qb6 33. Ng5+ Rxg5 34. hxg5 1-0

[Event "POL-ch U18"]
[Site "Szklarska Poreba"]
[Date "2020.03.10"]
[Round "4"]
[White "Musial, Tomasz"]
[Black "Iwanczuk, Krzysztof"]
[Result "1/2-1/2"]
[ECO "E63"]
[WhiteElo "2051"]
[BlackElo "1887"]
[PlyCount "116"]
[EventDate "2020.03.07"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 0-0 5. Bg2 d6 6. 0-0 Nc6 7. Nc3 a6 8. Qc2 Bf5 9. e4 Bg4 10. Be3 Nd7 11. Rad1 e5 12. d5 Nd4 13. Bxd4 exd4 14. Ne2 Bxf3 15. Bxf3 Ne5 16. Nxd4 c5 17. dxc6 bxc6 18. Bg2 c5 19. Ne2 Rb8 20. b3 Nc6 21. e5 Nxe5 22. Qd2 Re8 23. Nc3 Qf6 24. Ne4 Nf3+ 25. Bxf3 Qxf3 26. Nxd6 Re2 27. Qd5 Qxd5 28. Rxd5 Bd4 29. g4 Rxa2 30. Ne4 Rxb3 31. Nxc5 Bxc5 32. Rxc5 Rc3 33. Kg2 Ra4 34. Rb1 Rcxc4 35. Rxc4 Rxc4 36. Rb8+ Kg7 37. Kg3 Rc1 38. Ra8 Ra1 39. Ra7 a5 40. Ra6 a4 41. h3 a3 42. Kf3 g5 43. Kg2 Kf8 44. Ra7 Ke8 45. Kh2 a2 46. Kg2 Kd8 47. Kh2 Kc8 48. Kg2 Kb8 49. Ra3 Kc7 50. Ra7+ Kb6 51. Ra3 Kc5 52. Ra5+ Kc4 53. Ra8 Kd3 54. Ra3+ Kc2 55. Ra8 Kc3 56. Rc8+ Kd4 57. Ra8 Ke5 58. Ra5+ Kd4 1/2-1/2

[Event "POL-ch U18"]
[Site "Szklarska Poreba"]
[Date "2020.03.09"]
[Round "3"]
[White "Iwanczuk, Krzysztof"]
[Black "Ossolinski, Ziemowit"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1887"]
[BlackElo "1880"]
[PlyCount "59"]
[EventDate "2020.03.07"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. c3 Nf6 4. e5 Nd5 5. d4 cxd4 6. cxd4 d6 7. Bc4 dxe5 8. dxe5 Bb4+ 9. Nbd2 0-0 10. 0-0 Nc6 11. a3 Ba5 12. b4 Bc7 13. Bb2 Nf4 14. Qc2 Ng6 15. Rfe1 a6 16. g3 Bd7 17. h4 Qb8 18. Qe4 Rd8 19. h5 Nf8 20. Qg4 Be8 21. Ne4 h6 22. Nf6+ Kh8 23. Qf4 b5 24. Ba2 Rd3 25. Ng4 Qa7 26. Nxh6 gxh6 27. Qxh6+ Kg8 28. Qg5+ Kh8 29. h6 Nh7 30. Qg7# 1-0

[Event "POL-ch U18"]
[Site "Szklarska Poreba"]
[Date "2020.03.08"]
[Round "2"]
[White "Golenia, Wojciech"]
[Black "Iwanczuk, Krzysztof"]
[Result "1-0"]
[ECO "A35"]
[WhiteElo "2050"]
[BlackElo "1887"]
[PlyCount "97"]
[EventDate "2020.03.07"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. e3 Bg7 5. Nf3 0-0 6. Be2 c5 7. 0-0 cxd4 8. Nxd4 Nc6 9. cxd5 Nxd5 10. Bf3 Nxc3 11. bxc3 Na5 12. Rb1 e5 13. Nb5 Bf5 14. e4 Be6 15. Ba3 Qxd1 16. Rfxd1 Rfc8 17. Nd6 Rc7 18. Bb4 Nc4 19. Nxc4 Bxc4 20. Bd6 Rd7 21. Bg4 Be6 22. Bxe6 fxe6 23. Ba3 Rad8 24. Rxd7 Rxd7 25. Kf1 Bf8 26. Bxf8 Kxf8 27. Rb5 Rc7 28. Ke1 Ke7 29. Kd2 Kd6 30. Kc2 b6 31. f3 g5 32. Rb1 Rf7 33. Rd1+ Kc7 34. h3 h5 35. Rh1 g4 36. fxg4 hxg4 37. Kd3 Rf2 38. h4 Rxg2 39. Ke3 Rg3+ 40. Kf2 Rf3+ 41. Kg2 Rxc3 42. h5 Kd7 43. h6 Rc8 44. Kg3 Ke7 45. Kxg4 Kf6 46. Kh5 Rg8 47. Rf1+ Ke7 48. h7 Rg2 49. Rh1 1-0

[Event "POL-ch U18"]
[Site "Szklarska Poreba"]
[Date "2020.03.07"]
[Round "1"]
[White "Iwanczuk, Krzysztof"]
[Black "Polczyk, Mikolaj"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1887"]
[BlackElo "2132"]
[PlyCount "100"]
[EventDate "2020.03.07"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 d5 3. e3 c5 4. Nc3 e6 5. Nb5 Na6 6. c3 Be7 7. dxc5 Bxc5 8. Nf3 0-0 9. Bd3 Bd7 10. a4 Be7 11. Nbd4 Nc5 12. Bc2 Nfe4 13. Nd2 f5 14. 0-0 Nxd2 15. Qxd2 Rc8 16. f3 Bf6 17. Bd6 Re8 18. Bxc5 Rxc5 19. Nb3 Rc8 20. e4 fxe4 21. fxe4 Bc6 22. exd5 Qxd5 23. Qxd5 Bxd5 24. Rfd1 Bg5 25. Nd4 Be3+ 26. Kh1 Rcd8 27. Rd3 Bh6 28. Re1 Bg5 29. Re5 Bf6 30. Re1 a6 31. h3 Bc4 32. Rdd1 e5 33. Bb3 Rxd4 34. Rxd4 Bxb3 35. Rd7 e4 36. Rxb7 Bc2 37. Rd7 e3 38. Re2 Bxa4 39. Rd3 Bg5 40. c4 Rb8 41. h4 Bh6 42. Kh2 Bb3 43. Rd4 Rc8 44. g4 Rxc4 45. Rd8+ Kf7 46. g5 Rxh4+ 47. Kg3 Bxg5 48. Rd7+ Kg6 49. Rxe3 Bxe3 50. Kxh4 Be6 0-1

[Event "Dobczyce Dominik Memorial 27th"]
[Site "Dobczyce"]
[Date "2019.07.11"]
[Round "9"]
[White "Mirowska, Oliwia"]
[Black "Iwanczuk, Krzysztof"]
[Result "0-1"]
[ECO "A07"]
[WhiteElo "1735"]
[BlackElo "1775"]
[PlyCount "88"]
[EventDate "2019.07.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. g3 d5 2. Nf3 Bg4 3. Bg2 Nd7 4. d3 Ngf6 5. c3 e5 6. 0-0 Bd6 7. Nbd2 c6 8. e4 0-0 9. h3 Bh5 10. g4 Bg6 11. Nh4 Nc5 12. Nxg6 hxg6 13. exd5 cxd5 14. Nf3 e4 15. dxe4 dxe4 16. Nd4 Re8 17. Qc2 Rc8 18. Bg5 Qe7 19. Bh4 Nd3 20. Qe2 Nf4 21. Qe3 Nxg2 22. Kxg2 Nxg4 23. Bxe7 Nxe3+ 24. fxe3 Rxe7 25. Rf2 Rc5 26. h4 Rh5 27. Rh1 Ree5 28. a3 Rh6 29. Rf4 g5 30. Rg4 gxh4 31. Rhxh4 Rxh4 32. Rxh4 Rg5+ 33. Kf1 f5 34. Ne6 Rg3 35. Kf2 Rg6 36. Nf4 Bxf4 37. Rxf4 Rf6 38. Kg3 g5 39. Rf2 Kf7 40. Rd2 f4+ 41. exf4 gxf4+ 42. Kg2 Ke6 43. Rd8 f3+ 44. Kf2 e3+ 0-1

[Event "Dobczyce Dominik Memorial 27th"]
[Site "Dobczyce"]
[Date "2019.07.10"]
[Round "8"]
[White "Iwanczuk, Krzysztof"]
[Black "Kyc, Jerzy"]
[Result "0-1"]
[ECO "B53"]
[WhiteElo "1775"]
[BlackElo "2279"]
[PlyCount "76"]
[EventDate "2019.07.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[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. Qxd4 Bd7 5. c4 Nc6 6. Qd2 g6 7. b3 Bg7 8. Bb2 Nf6 9. Nc3 Qa5 10. Rb1 0-0 11. Be2 Bg4 12. 0-0 Rfd8 13. Rfe1 a6 14. a3 Rac8 15. h3 Bxf3 16. Bxf3 Ne5 17. Be2 b5 18. b4 Qb6 19. cxb5 axb5 20. Nxb5 Nxe4 21. Qf4 f5 22. Bd4 Qb8 23. Rec1 Bf6 24. h4 Nd7 25. Bxf6 Ndxf6 26. Qe3 e5 27. Na7 Nd5 28. Rxc8 Rxc8 29. Qb3 Qxa7 30. Qxd5+ Kg7 31. Kh2 Rc2 32. Bd3 Rd2 33. Qc4 Qxf2 34. Bxe4 fxe4 35. Qf1 Qxh4+ 36. Kg1 e3 37. b5 e2 38. Qe1 Qd4+ 0-1

[Event "Dobczyce Dominik Memorial 27th"]
[Site "Dobczyce"]
[Date "2019.07.09"]
[Round "6"]
[White "Iwanczuk, Krzysztof"]
[Black "Jalowiec, Halina"]
[Result "1-0"]
[ECO "C24"]
[WhiteElo "1775"]
[BlackElo "1919"]
[PlyCount "101"]
[EventDate "2019.07.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. d4 Qe7 4. Nf3 d5 5. exd5 exd4+ 6. Be2 Nxd5 7. 0-0 Qd8 8. Qxd4 Be6 9. Ng5 Qf6 10. Nxe6 fxe6 11. Qe4 c6 12. Bg4 Nc7 13. Bf4 Nba6 14. Bh5+ Kd7 15. Rd1+ Kc8 16. Nd2 Nc5 17. Qe5 Nd5 18. Bg3 Nd7 19. Qe2 Bc5 20. c4 Nf4 21. Bxf4 Qxf4 22. Qxe6 Qxf2+ 23. Kh1 Qf6 24. Qh3 Kc7 25. Ne4 Qe7 26. Rxd7+ Qxd7 27. Qxd7+ Kxd7 28. Nxc5+ Ke7 29. Re1+ Kf6 30. Re6+ Kg5 31. Re5+ Kh6 32. Nxb7 g6 33. Bf3 Rhe8 34. Rxe8 Rxe8 35. h3 Re1+ 36. Kh2 Rb1 37. b3 Rb2 38. Bxc6 Rxa2 39. Bd5 Rd2 40. Kg3 Kg5 41. Nc5 Kf5 42. Kf3 Ke5 43. Ke3 Rd1 44. Nd3+ Kd6 45. Kd4 a5 46. c5+ Kc7 47. Bf3 Ra1 48. Nf4 Rc1 49. Ne6+ Kd7 50. Kd5 Rc3 51. Nd4 1-0

[Event "Dobczyce Dominik Memorial 27th"]
[Site "Dobczyce"]
[Date "2019.07.09"]
[Round "7"]
[White "Slabek, Grzegorz"]
[Black "Iwanczuk, Krzysztof"]
[Result "1/2-1/2"]
[ECO "D12"]
[WhiteElo "1953"]
[BlackElo "1775"]
[PlyCount "57"]
[EventDate "2019.07.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. e3 Bf5 4. c4 c6 5. Nc3 e6 6. Qb3 Qb6 7. c5 Qc7 8. Ne5 Nbd7 9. f4 Nxe5 10. fxe5 Ne4 11. Be2 Be7 12. 0-0 0-0 13. Nxe4 Bxe4 14. Bd2 b6 15. cxb6 axb6 16. Rac1 Rfc8 17. a3 Qa7 18. Bh5 Bg6 19. Be2 c5 20. Qb5 c4 21. Bb4 Bxb4 22. Qxb4 Qa5 23. Qc3 b5 24. Qxa5 Rxa5 25. Bd1 b4 26. axb4 Rb5 27. b3 Rxb4 28. bxc4 Rbxc4 29. Ra1 1/2-1/2

[Event "Dobczyce Dominik Memorial 27th"]
[Site "Dobczyce"]
[Date "2019.07.08"]
[Round "5"]
[White "Seredyn, Dominik"]
[Black "Iwanczuk, Krzysztof"]
[Result "1/2-1/2"]
[ECO "D46"]
[WhiteElo "1737"]
[BlackElo "1775"]
[PlyCount "88"]
[EventDate "2019.07.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. c4 c6 4. e3 e6 5. Bd3 Nbd7 6. 0-0 Bd6 7. Nbd2 0-0 8. e4 dxe4 9. Nxe4 Nxe4 10. Bxe4 f5 11. Bc2 e5 12. Bg5 Be7 13. Bxe7 Qxe7 14. Nxe5 Nxe5 15. Re1 Qb4 16. dxe5 Be6 17. Qd6 Qxd6 18. exd6 Bxc4 19. Re7 Rf7 20. Rxf7 Kxf7 21. Bxf5 g6 22. Bh3 Rd8 23. d7 Be6 24. Bxe6+ Kxe6 25. Re1+ Kxd7 26. Rd1+ Ke7 27. Rxd8 Kxd8 28. f4 Ke7 29. Kf2 Ke6 30. Kf3 Kd5 31. b4 b6 32. Ke3 c5 33. bxc5 bxc5 34. Kd3 c4+ 35. Kc3 h5 36. g3 Ke4 37. Kxc4 Kf3 38. Kd3 Kg2 39. Ke2 Kxh2 40. Kf2 a6 41. a3 a5 42. a4 Kh3 43. Kf3 Kh2 44. Kf2 Kh3 1/2-1/2

[Event "Dobczyce Dominik Memorial 27th"]
[Site "Dobczyce"]
[Date "2019.07.07"]
[Round "4"]
[White "Iwanczuk, Krzysztof"]
[Black "Luberanski, Jakub"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "1775"]
[BlackElo "2010"]
[PlyCount "58"]
[EventDate "2019.07.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 g6 3. Nc3 d5 4. e3 Bg7 5. h4 c6 6. h5 Nxh5 7. Rxh5 gxh5 8. Qxh5 Nd7 9. Qh2 Nf6 10. Bd3 Bg4 11. Nf3 Bh5 12. 0-0-0 Bg6 13. Ne5 Nd7 14. Nf3 e6 15. e4 dxe4 16. Nxe4 Bxe4 17. Bxe4 Nf6 18. Bd3 Qd5 19. c4 Qh5 20. Ne5 Qxh2 21. Bxh2 Rd8 22. Bc2 h5 23. Bb3 Ng4 24. Bf4 Nxe5 25. Bxe5 Bxe5 26. dxe5 Rxd1+ 27. Bxd1 h4 28. f4 Rg8 29. Bf3 Rg3 0-1

[Event "Dobczyce Dominik Memorial 27th"]
[Site "Dobczyce"]
[Date "2019.07.06"]
[Round "2"]
[White "Iwanczuk, Krzysztof"]
[Black "Dziewonski, Dariusz"]
[Result "1/2-1/2"]
[ECO "B13"]
[WhiteElo "1775"]
[BlackElo "1879"]
[PlyCount "46"]
[EventDate "2019.07.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 c5 3. e3 cxd4 4. exd4 Bf5 5. c3 Nf6 6. Nf3 e6 7. Bxb8 Rxb8 8. Bb5+ Ke7 9. Bd3 Bxd3 10. Qxd3 g6 11. Nbd2 Bg7 12. 0-0 Re8 13. Ne5 Kf8 14. f4 Kg8 15. g4 Nd7 16. Ndf3 Nxe5 17. fxe5 b5 18. a3 Re7 19. h4 h6 20. h5 g5 21. Nd2 Rc7 22. Rf3 a5 23. b4 a4 1/2-1/2

[Event "Dobczyce Dominik Memorial 27th"]
[Site "Dobczyce"]
[Date "2019.07.06"]
[Round "3"]
[White "Kawula, Andrzej"]
[Black "Iwanczuk, Krzysztof"]
[Result "0-1"]
[ECO "A52"]
[WhiteElo "1876"]
[BlackElo "1775"]
[PlyCount "94"]
[EventDate "2019.07.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Nf3 Bc5 5. e3 Nc6 6. Be2 0-0 7. 0-0 Re8 8. b3 Ngxe5 9. Nbd2 Nxf3+ 10. Nxf3 Ne5 11. Bb2 Nxf3+ 12. Bxf3 a5 13. Qd5 Qe7 14. Rad1 Ra6 15. Bd4 Bb4 16. c5 Rh6 17. g3 c6 18. Qc4 d6 19. cxd6 Bxd6 20. Qc3 Bb4 21. Qb2 Bh3 22. Bg2 Bxg2 23. Kxg2 Qe6 24. h4 Rxh4 25. Rh1 Qd5+ 26. f3 Rxh1 27. Rxh1 c5 28. Bxg7 Rxe3 29. Rf1 Qd2+ 30. Rf2 Qxb2 31. Bxb2 Bc3 32. Bc1 Re1 33. Rc2 Bd4 34. f4 f5 35. Kf3 Kf7 36. a3 Ke6 37. b4 axb4 38. axb4 cxb4 39. Bb2 Re3+ 40. Kg2 Kd5 41. Bxd4 Kxd4 42. Rc7 b5 43. Kf2 Re4 44. Rb7 b3 45. Rxb5 Kc3 46. Rc5+ Rc4 47. Re5 b2 0-1

[Event "Dobczyce Dominik Memorial 27th"]
[Site "Dobczyce"]
[Date "2019.07.05"]
[Round "1"]
[White "Kuciel, Wladyslaw"]
[Black "Iwanczuk, Krzysztof"]
[Result "1/2-1/2"]
[ECO "E92"]
[WhiteElo "1966"]
[BlackElo "1775"]
[PlyCount "111"]
[EventDate "2019.07.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[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. Be2 0-0 6. Be3 e5 7. d5 a5 8. h3 Na6 9. Nf3 Nd7 10. g4 Ndc5 11. Rg1 c6 12. Qd2 cxd5 13. cxd5 Bd7 14. Bh6 b5 15. Bxg7 Kxg7 16. Qe3 Qb6 17. Kf1 Rac8 18. Kg2 Nc7 19. b3 Ne8 20. Rac1 Nf6 21. Nd2 Qb7 22. Kh2 Rc7 23. g5 Ng8 24. f4 f5 25. gxf6+ Nxf6 26. fxe5 dxe5 27. Rcf1 b4 28. Nd1 Bb5 29. Bxb5 Qxb5 30. Nb2 Ncxe4 31. Nxe4 Nxd5 32. Qd3 Qxd3 33. Nxd3 Rc2+ 34. Kg3 Rxf1 35. Rxf1 Rxa2 36. Nxe5 Re2 37. Rf7+ Kg8 38. Rd7 Rxe4 39. Rxd5 Re3+ 40. Kg4 Rxb3 41. Kg5 Kf8 42. Kf6 Ke8 43. Rxa5 Kd8 44. Ra8+ Kc7 45. Ra7+ Kb6 46. Rxh7 Rg3 47. Nxg6 b3 48. Ne5 Kc5 49. h4 Rh3 50. Kg5 Kd4 51. Ng6 Kc3 52. Rb7 b2 53. h5 Rxh5+ 54. Kxh5 Kc2 55. Rc7+ Kd1 56. Rc8 1/2-1/2

[Event "POL-ch U18"]
[Site "Szklarska Poreba"]
[Date "2019.03.16"]
[Round "9"]
[White "Kukula, Karol"]
[Black "Iwanczuk, Krzysztof"]
[Result "1/2-1/2"]
[ECO "B13"]
[WhiteElo "1785"]
[BlackElo "1749"]
[PlyCount "102"]
[EventDate "2019.03.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 Nc6 6. Bg5 Be6 7. Bxf6 exf6 8. c5 g6 9. Bb5 Bg7 10. Nge2 0-0 11. 0-0 Ne7 12. Nf4 b6 13. Qe2 Bd7 14. b4 Nf5 15. Bxd7 Qxd7 16. Rad1 Ne7 17. Rfe1 Rfe8 18. Qb5 Qxb5 19. Nxb5 Nc6 20. Rxe8+ Rxe8 21. Nd6 Rd8 22. b5 Ne7 23. Re1 Bf8 24. Nb7 Rc8 25. c6 Nxc6 26. bxc6 Rxc6 27. Nxd5 Kg7 28. a4 Rc4 29. a5 Rxd4 30. axb6 axb6 31. Nxb6 Rb4 32. Nd7 Rxb7 33. Nxf8 Kxf8 34. g3 f5 35. Kg2 Kg7 36. Ra1 Rb6 37. Ra4 Kf6 38. h4 Rb7 39. Ra6+ Kg7 40. Ra4 f6 41. Rc4 g5 42. Ra4 Kg6 43. Kf3 Rb3+ 44. Kg2 f4 45. hxg5 f3+ 46. Kh2 Rb2 47. gxf6 Rxf2+ 48. Kh3 Kxf6 49. g4 Ke5 50. Kg3 Rf1 51. Rb4 Kf6 1/2-1/2

[Event "POL-ch U18"]
[Site "Szklarska Poreba"]
[Date "2019.03.15"]
[Round "8"]
[White "Iwanczuk, Krzysztof"]
[Black "Ochowicz, Jakub"]
[Result "0-1"]
[ECO "E60"]
[WhiteElo "1749"]
[BlackElo "1988"]
[PlyCount "76"]
[EventDate "2019.03.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. b3 Nf6 2. Bb2 d6 3. e3 Nbd7 4. Nf3 g6 5. Be2 Bg7 6. 0-0 0-0 7. c4 e5 8. d4 e4 9. Nfd2 Qe7 10. Nc3 Re8 11. b4 Nf8 12. a4 h5 13. b5 Bf5 14. Nb3 Ng4 15. Nd5 Qd8 16. a5 Ne6 17. f3 exf3 18. gxf3 Nh6 19. e4 Bh3 20. Rf2 c6 21. Nb4 Nf4 22. Bf1 cxb5 23. cxb5 Bxf1 24. Qxf1 Qh4 25. Kh1 d5 26. Nc5 dxe4 27. fxe4 Ng4 28. Rc2 Nh3 29. Nd5 Nhf2+ 30. Rxf2 Nxf2+ 31. Kg1 Nxe4 32. Nxe4 Rxe4 33. Nc7 Rd8 34. b6 axb6 35. axb6 Qg4+ 36. Kh1 Re2 37. Bc3 Qe4+ 38. Kg1 Qe3+ 0-1

[Event "POL-ch U18"]
[Site "Szklarska Poreba"]
[Date "2019.03.14"]
[Round "7"]
[White "Iwanczuk, Krzysztof"]
[Black "Marczak, Szymon"]
[Result "1/2-1/2"]
[ECO "A14"]
[WhiteElo "1749"]
[BlackElo "1931"]
[PlyCount "106"]
[EventDate "2019.03.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. c4 e6 2. Nf3 c5 3. Nc3 Nf6 4. g3 b6 5. Bg2 Bb7 6. 0-0 Be7 7. b3 Nc6 8. Bb2 0-0 9. e3 d5 10. cxd5 Nxd5 11. Nxd5 Qxd5 12. Ne5 Qd6 13. Nxc6 Bxc6 14. Qg4 g6 15. Bxc6 Qxc6 16. d4 Bf6 17. Ba3 Qb5 18. Rfd1 Rfd8 19. Bb2 Rac8 20. Rab1 cxd4 21. Bxd4 Bxd4 22. Rxd4 Rxd4 23. Qxd4 Rc2 24. a4 Qf5 25. Rf1 Qd5 26. Qxd5 exd5 27. Rd1 Rc5 28. b4 Rc4 29. Rxd5 Rxb4 30. a5 Rc4 31. axb6 axb6 32. Rd8+ Kg7 33. Rb8 Rb4 34. Kg2 h5 35. h4 Rb2 36. Kf3 b5 37. e4 b4 38. Rb6 b3 39. Kg2 Rb1 40. e5 b2 41. Kh2 Kf8 42. Kg2 Ke7 43. Kh2 Kd7 44. Kg2 Kc7 45. Rb3 Kc6 46. f4 Kd5 47. Rb8 Ke4 48. Rb7 Ke3 49. Rb8 Kd4 50. Rd8+ Ke4 51. Rb8 Kf5 52. Rb6 Kg4 53. Kh2 Kf3 1/2-1/2

[Event "POL-ch U18"]
[Site "Szklarska Poreba"]
[Date "2019.03.13"]
[Round "6"]
[White "Kaminski, Maciej1111"]
[Black "Iwanczuk, Krzysztof"]
[Result "0-1"]
[ECO "E94"]
[WhiteElo "1796"]
[BlackElo "1749"]
[PlyCount "68"]
[EventDate "2019.03.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 Na6 7. 0-0 e5 8. d5 Nc5 9. Qc2 a5 10. Be3 b6 11. a3 Ng4 12. Bg5 f6 13. Bh4 g5 14. b4 Na6 15. b5 Nc5 16. Bg3 f5 17. h3 Nh6 18. Nd2 f4 19. Bh2 g4 20. hxg4 Bxg4 21. f3 Bd7 22. Rfd1 Qh4 23. Nf1 Rf6 24. g3 Qh3 25. Rd2 Nf7 26. Nd1 fxg3 27. Bxg3 Rg6 28. Kf2 Rxg3 29. Nxg3 Qh2+ 30. Ke1 Qxg3+ 31. Nf2 Bh6 32. Rdd1 Ng5 33. Kf1 Nh3 34. Bd3 Qg1+ 0-1

[Event "POL-ch U18"]
[Site "Szklarska Poreba"]
[Date "2019.03.12"]
[Round "5"]
[White "Iwanczuk, Krzysztof"]
[Black "Burzak, Wojciech"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "1749"]
[BlackElo "1666"]
[PlyCount "87"]
[EventDate "2019.03.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 g6 3. Nc3 Bg7 4. e4 d6 5. Qd2 c6 6. f3 b5 7. Bh6 Bxh6 8. Qxh6 Nbd7 9. 0-0-0 b4 10. Nb1 Qa5 11. Bc4 d5 12. Bb3 dxe4 13. Qg7 Rf8 14. Nd2 Ba6 15. fxe4 e6 16. e5 Nd5 17. Ne4 Ne3 18. Nd6+ Ke7 19. Qh6 Nf5 20. Nxf5+ gxf5 21. Qh4+ Ke8 22. Nf3 Qd8 23. Qxh7 Be2 24. Rd2 Bxf3 25. gxf3 Qg5 26. h4 Qg3 27. Qh5 Ke7 28. Qg5+ Qxg5 29. hxg5 Nb6 30. Rh7 Rg8 31. f4 a5 32. a4 Rab8 33. Rdh2 Rg6 34. c3 bxc3 35. bxc3 Nd5 36. Bxd5 cxd5 37. Rb2 Rxb2 38. Kxb2 Rg8 39. Kc2 Kf8 40. Kd3 Ke7 41. c4 dxc4+ 42. Kxc4 Rc8+ 43. Kb5 Rc3 44. g6 1-0

[Event "POL-ch U18"]
[Site "Szklarska Poreba"]
[Date "2019.03.11"]
[Round "4"]
[White "Lis, Mateusz"]
[Black "Iwanczuk, Krzysztof"]
[Result "1-0"]
[ECO "B38"]
[WhiteElo "2156"]
[BlackElo "1749"]
[PlyCount "85"]
[EventDate "2019.03.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Bg7 5. c4 Nc6 6. Be3 Nf6 7. Nc3 d6 8. Be2 0-0 9. Qd2 Ng4 10. Nxc6 bxc6 11. Bg5 Be6 12. 0-0 Re8 13. Na4 c5 14. Bxg4 Bxg4 15. Rab1 Bd7 16. Nc3 Rb8 17. Nd5 Bc6 18. Rfe1 Qd7 19. b3 Bxd5 20. Qxd5 Be5 21. Be3 Qg4 22. h3 Qc8 23. f4 Bg7 24. Rf1 Qb7 25. Qd3 Red8 26. f5 e6 27. f6 Bf8 28. Rbd1 d5 29. Bf4 Rbc8 30. exd5 exd5 31. cxd5 Rd7 32. d6 Rcd8 33. Rfe1 Qb6 34. Kh2 h6 35. Re7 Bxe7 36. fxe7 Re8 37. Qc3 Kh7 38. Qe5 Qc6 39. Bg3 a6 40. h4 h5 41. Rf1 Kg8 42. Qf6 Qd5 43. Be5 1-0

[Event "POL-ch U18"]
[Site "Szklarska Poreba"]
[Date "2019.03.10"]
[Round "3"]
[White "Iwanczuk, Krzysztof"]
[Black "Majocha, Piotr"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1749"]
[BlackElo "2028"]
[PlyCount "70"]
[EventDate "2019.03.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 e6 3. e3 d5 4. Nf3 c5 5. c3 Nbd7 6. Nbd2 Be7 7. Bd3 0-0 8. h4 b6 9. Ne5 Bb7 10. Qf3 a6 11. g4 Nxe5 12. dxe5 Nd7 13. g5 Qc7 14. Qg3 c4 15. Bxh7+ Kxh7 16. h5 Nc5 17. g6+ Kg8 18. h6 d4 19. hxg7 Bxh1 20. gxf8Q+ Rxf8 21. g7 Rd8 22. Qh2 Nd3+ 23. Kf1 Kxg7 24. Qg1+ Kf8 25. Qxh1 Ke8 26. Qe4 dxc3 27. bxc3 Nxf4 28. Nxc4 Ng6 29. f4 b5 30. Nd6+ Bxd6 31. exd6 Qxd6 32. f5 Ne5 33. fxe6 Qxe6 34. a4 Qc4+ 35. Qxc4 bxc4 0-1

[Event "POL-ch U18"]
[Site "Szklarska Poreba"]
[Date "2019.03.09"]
[Round "1"]
[White "Lukasiewicz, Krzysztof"]
[Black "Iwanczuk, Krzysztof"]
[Result "1-0"]
[ECO "B92"]
[WhiteElo "2155"]
[BlackElo "1749"]
[PlyCount "107"]
[EventDate "2019.03.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nf3 Be7 8. Bg5 Nbd7 9. a4 h6 10. Bxf6 Nxf6 11. Nd2 Be6 12. 0-0 Rc8 13. Re1 d5 14. exd5 Nxd5 15. Nxd5 Bxd5 16. Bg4 Rc7 17. Rxe5 0-0 18. c3 Bf6 19. Re1 b5 20. axb5 axb5 21. Ne4 Bxe4 22. Rxe4 Qxd1+ 23. Bxd1 Rd8 24. Rb4 Rc5 25. Be2 Rdd5 26. Kf1 Bd8 27. Ra8 Kh7 28. Rb8 Bc7 29. R8xb5 Rxb5 30. Rxb5 Rxb5 31. Bxb5 Kg6 32. Be8 Kf6 33. h3 Ke7 34. Ba4 Kd6 35. Ke2 Bb6 36. b4 g5 37. c4 Bd4 38. c5+ Kd5 39. Kd3 Bxf2 40. Bb3+ Kc6 41. Kc4 f5 42. Bc2 g4 43. Bxf5 gxh3 44. Bxh3 h5 45. b5+ Kb7 46. Bf5 Bg3 47. Be4+ Kb8 48. b6 h4 49. Bf5 Bf2 50. Kb5 Be3 51. c6 Bf4 52. c7+ Bxc7 53. bxc7+ Kxc7 54. Kc5 1-0

[Event "POL-ch U18"]
[Site "Szklarska Poreba"]
[Date "2019.03.09"]
[Round "2"]
[White "Paliwoda, Borys"]
[Black "Iwanczuk, Krzysztof"]
[Result "1/2-1/2"]
[ECO "B38"]
[WhiteElo "1974"]
[BlackElo "1749"]
[PlyCount "141"]
[EventDate "2019.03.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Bg7 5. c4 Nc6 6. Be3 Nf6 7. Nc3 d6 8. f3 0-0 9. Be2 Bd7 10. Nb3 Rc8 11. Rc1 Ne5 12. Nd2 Qa5 13. h3 Be6 14. b3 Nh5 15. Ndb1 Ng3 16. Rg1 a6 17. Kf2 Nxe2 18. Qxe2 f5 19. Nd5 Bxd5 20. exd5 f4 21. Bd2 Qxa2 22. Rgd1 Qxb3 23. Rc3 Qb6+ 24. Kf1 g5 25. Na3 Ng6 26. Rb1 Qc7 27. Rcb3 Rb8 28. Qf2 Ne5 29. Qb6 Qd7 30. Bc3 Qf5 31. Bxe5 Bxe5 32. Qc7 Bf6 33. Ke2 Qe5+ 34. Kf1 b5 35. Qc6 Rbc8 36. Qxa6 bxc4 37. Nxc4 Qxd5 38. Nb6 Qc6 39. Qa2 Kg7 40. Nxc8 Rxc8 41. Qe2 Qc4 42. Qxc4 Rxc4 43. Rd3 Bd4 44. Ke2 Be3 45. Rb2 Bd4 46. Ra2 Kg6 47. Rb3 Rc1 48. Kd3 Bc5 49. Re2 e5 50. Rb7 Ra1 51. Rc2 h5 52. Rb8 Ra7 53. Ke4 Ra4+ 54. Kd5 Kf7 55. Rcb2 Rd4+ 56. Kc6 e4 57. R2b7+ Kg6 58. Rg8+ Kf6 59. Rf8+ Kg6 60. Rbf7 exf3 61. gxf3 Rd3 62. Rf6+ Kg7 63. R8f7+ Kg8 64. Rb7 Rxf3 65. Rg6+ Kh8 66. Rh6+ Kg8 67. Rg6+ Kf8 68. Rgg7 Re3 69. Rgf7+ Kg8 70. Rg7+ Kf8 71. Rgf7+ 1/2-1/2

[Event "EU-ch rapid"]
[Site "Katowice"]
[Date "2017.12.16"]
[Round "1"]
[White "Aleksandrov, Aleksej"]
[Black "Iwanczuk, Krzysztof"]
[Result "1-0"]
[ECO "E90"]
[WhiteElo "2589"]
[BlackElo "1655"]
[PlyCount "89"]
[EventDate "2017.12.16"]
[EventType "swiss (rapid)"]
[EventRounds "11"]
[EventCountry "POL"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 0-0 6. Be3 e5 7. d5 a5 8. Nf3 Na6 9. g4 Nd7 10. Rg1 Ndc5 11. h4 c6 12. h5 cxd5 13. cxd5 Bd7 14. a4 Qb6 15. Bb5 Bxb5 16. Nxb5 Nb4 17. Kf1 Rac8 18. Nd2 Qd8 19. b3 Qe7 20. Na7 Rc7 21. Nb5 Rcc8 22. Rc1 Ncd3 23. Rxc8 Rxc8 24. Nc4 Rd8 25. Nxa5 Nf4 26. Rg3 Qh4 27. Kg1 Nh3+ 28. Kg2 Nf4+ 29. Bxf4 exf4 30. Rh3 Qe7 31. Qf3 g5 32. Rh1 Rc8 33. Nc4 Be5 34. Rd1 h6 35. Qe2 Na6 36. Rc1 Nc5 37. Nxe5 Qxe5 38. b4 Qd4 39. Nxd6 Rd8 40. bxc5 Qxa4 41. Nxb7 Re8 42. Nd6 Rd8 43. c6 Qa3 44. c7 Qxd6 45. c8Q 1-0

