[Event "Warsaw Najdorf Memorial op-B 11th"]
[Site "Warsaw"]
[Date "2013.08.07"]
[Round "3"]
[White "Traczyk, Pawel"]
[Black "Pietras, Zbigniew"]
[Result "1-0"]
[ECO "E27"]
[WhiteElo "1753"]
[BlackElo "1340"]
[PlyCount "58"]
[EventDate "2013.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 Nc6 5. a3 Bxc3+ 6. bxc3 d6 7. e4 0-0 8. Bd3 Qe7 9. Ne2 e5 10. 0-0 b6 11. Bg5 h6 12. Bh4 g5 13. Bf2 Nh5 14. g4 Ng7 15. Ng3 f6 16. Nf5 Bxf5 17. exf5 h5 18. Be4 Qe8 19. c5 dxc5 20. dxc5 Rd8 21. Qb3+ Kh7 22. cxb6 axb6 23. Rfd1 Na5 24. Qc2 Rf7 25. h4 Rfd7 26. hxg5 hxg4 27. fxg4 Rxd1+ 28. Rxd1 Rxd1+ 29. Qxd1 Qa4 1-0

[Event "Warsaw-ch opB 66th"]
[Site "Warsaw"]
[Date "2013.05.19"]
[Round "9"]
[White "Gajewski, Zbigniew"]
[Black "Pietras, Zbigniew"]
[Result "1-0"]
[ECO "B41"]
[WhiteElo "1455"]
[PlyCount "89"]
[EventDate "2013.05.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 154 Extra"]
[Source "ChessBase"]
[SourceDate "2013.06.25"]
[SourceVersion "2"]
[SourceVersionDate "2013.06.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. c3 Qc7 6. Be3 Nf6 7. Be2 Be7 8. 0-0 Nxe4 9. Qc2 d5 10. Nd2 Nf6 11. f4 Bd7 12. Rad1 Nc6 13. N2f3 0-0 14. Ne5 Nxe5 15. fxe5 Qxe5 16. Bf4 Qe4 17. Bd3 Qxf4 18. Rxf4 e5 19. Rff1 exd4 20. cxd4 Rac8 21. Qe2 Rfe8 22. Rc1 Bd8 23. Qd2 Bb6 24. Rxc8 Bxd4+ 25. Kh1 Bxc8 26. Bxh7+ Kxh7 27. Qxd4 Re4 28. Qc5 Bd7 29. h3 Bc6 30. Rf3 Re2 31. Qf8 Be8 32. Rf4 Kg6 33. Qa3 Ne4 34. Qf3 Rf2 35. Qg4+ Kh7 36. Qh4+ Kg8 37. Rxf2 Nxf2+ 38. Qxf2 f5 39. Qd4 Bc6 40. Kh2 Kf7 41. g4 g5 42. Kg3 Ke6 43. h4 gxh4+ 44. Kxh4 Kf7 45. Kh5 1-0

[Event "Warsaw-ch opB 66th"]
[Site "Warsaw"]
[Date "2013.05.18"]
[Round "8"]
[White "Pietras, Zbigniew"]
[Black "Budrewicz, Henryk"]
[Result "0-1"]
[ECO "A00"]
[BlackElo "1573"]
[PlyCount "38"]
[EventDate "2013.05.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 154 Extra"]
[Source "ChessBase"]
[SourceDate "2013.06.25"]
[SourceVersion "2"]
[SourceVersionDate "2013.06.25"]
[SourceQuality "1"]

1. b4 e5 2. Bb2 Bxb4 3. Bxe5 Nf6 4. c4 0-0 5. e3 Re8 6. Nf3 d5 7. cxd5 Nxd5 8. Be2 Nc6 9. Bb2 Bg4 10. 0-0 Qe7 11. a3 Bd6 12. d4 Nxe3 13. fxe3 Qxe3+ 14. Rf2 Bxf3 15. Bxf3 Bxh2+ 16. Kf1 Bg3 17. Re2 Qh6 18. Rxe8+ Rxe8 19. Bh5 Qxh5 0-1

[Event "Warsaw-ch opB 66th"]
[Site "Warsaw"]
[Date "2013.05.17"]
[Round "7"]
[White "Herman, Monika"]
[Black "Pietras, Zbigniew"]
[Result "1-0"]
[ECO "B43"]
[WhiteElo "1693"]
[PlyCount "61"]
[EventDate "2013.05.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 154 Extra"]
[Source "ChessBase"]
[SourceDate "2013.06.25"]
[SourceVersion "2"]
[SourceVersionDate "2013.06.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Be2 Nf6 7. Qd3 Be7 8. Be3 d6 9. 0-0 Nbd7 10. f3 b5 11. a3 Bb7 12. Qd2 h6 13. Rfd1 0-0 14. Rac1 Rfe8 15. Bf1 Rac8 16. Ndxb5 axb5 17. Nxb5 Qb8 18. Nxd6 Bxd6 19. Qxd6 Qxd6 20. Rxd6 Ne5 21. c4 Red8 22. Rxd8+ Rxd8 23. c5 Ra8 24. Bb5 Ba6 25. a4 Bxb5 26. axb5 Nd3 27. Rb1 Ra5 28. c6 Ne8 29. b6 Ra8 30. b7 Rb8 31. Ba7 1-0

[Event "Warsaw-ch opB 66th"]
[Site "Warsaw"]
[Date "2013.05.16"]
[Round "6"]
[White "Pietras, Zbigniew"]
[Black "Wyszomirski, Krzysztof"]
[Result "0-1"]
[ECO "A00"]
[BlackElo "1747"]
[PlyCount "100"]
[EventDate "2013.05.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 154 Extra"]
[Source "ChessBase"]
[SourceDate "2013.06.25"]
[SourceVersion "2"]
[SourceVersionDate "2013.06.25"]
[SourceQuality "1"]

1. b4 e6 2. b5 Be7 3. Bb2 Bf6 4. d4 d5 5. e3 c6 6. c4 Bd7 7. a4 Ne7 8. Nf3 0-0 9. Be2 a6 10. Nc3 dxc4 11. Bxc4 axb5 12. axb5 Rxa1 13. Qxa1 cxb5 14. Nxb5 Bc6 15. Be2 Nd7 16. 0-0 Nb6 17. Nc3 Qd7 18. Rd1 Ra8 19. Qb1 Ned5 20. e4 Nf4 21. Bf1 Na4 22. g3 Ng6 23. Nxa4 Bxa4 24. Rd2 Bc6 25. Bh3 Qd8 26. Bc3 h5 27. Bg2 h4 28. Ne1 hxg3 29. hxg3 Ne7 30. Nc2 Nc8 31. Ne3 Nb6 32. f3 Na4 33. Ba1 Qa5 34. Nc4 Nc3 35. Nxa5 Nxb1 36. Rd1 Rxa5 37. Rxb1 Rxa1 38. Rxa1 Bxd4+ 39. Kf1 Bxa1 40. Ke1 Kf8 41. Kd2 Ke7 42. Bf1 Kd6 43. Ke3 Kc5 44. f4 b5 45. Kd3 b4 46. Bg2 Bd4 47. g4 b3 48. f5 b2 49. Kc2 Bb5 50. Bf3 Bd3+ 0-1

[Event "Warsaw-ch opB 66th"]
[Site "Warsaw"]
[Date "2013.05.15"]
[Round "5"]
[White "Kalhorn, Marcin"]
[Black "Pietras, Zbigniew"]
[Result "0-1"]
[ECO "D04"]
[WhiteElo "1645"]
[PlyCount "74"]
[EventDate "2013.05.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 154 Extra"]
[Source "ChessBase"]
[SourceDate "2013.06.25"]
[SourceVersion "2"]
[SourceVersionDate "2013.06.25"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. e3 Bg4 4. h3 Bh5 5. g4 Bg6 6. Ne5 e6 7. h4 c5 8. h5 Be4 9. f3 cxd4 10. exd4 Bb4+ 11. Nd2 Qb6 12. c3 Bd6 13. fxe4 dxe4 14. Ndc4 Qc7 15. Nxd6+ Qxd6 16. Bb5+ Nbd7 17. Qe2 0-0 18. Bxd7 Nxd7 19. Nxd7 Qxd7 20. Qxe4 f5 21. Qg2 e5 22. d5 f4 23. 0-0 Rae8 24. c4 Qd6 25. b3 e4 26. Bb2 f3 27. Qh2 Qc5+ 28. Kh1 e3 29. Rae1 f2 30. Re2 Re4 31. Be5 b5 32. Bd6 Qd4 33. Bxf8 Rxg4 34. Rfxf2 Qd1+ 35. Re1 Qxe1+ 36. Rf1 Qxf1+ 37. Qg1 Qxg1# 0-1

[Event "Warsaw-ch opB 66th"]
[Site "Warsaw"]
[Date "2013.05.14"]
[Round "4"]
[White "Pietras, Zbigniew"]
[Black "Tomczyk, Ryszard"]
[Result "1-0"]
[ECO "A00"]
[BlackElo "1502"]
[PlyCount "120"]
[EventDate "2013.05.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 154 Extra"]
[Source "ChessBase"]
[SourceDate "2013.06.25"]
[SourceVersion "2"]
[SourceVersionDate "2013.06.25"]
[SourceQuality "1"]

1. b4 e6 2. b5 b6 3. Bb2 Nf6 4. e3 Bb7 5. c4 Be7 6. Nf3 d6 7. Be2 Nbd7 8. a4 Nc5 9. 0-0 h6 10. d3 Qd7 11. Nbd2 e5 12. Nb3 Ne6 13. d4 exd4 14. Nbxd4 Nxd4 15. Nxd4 a5 16. Bf3 Bxf3 17. Qxf3 0-0 18. Nc6 Nh7 19. Rfe1 Bf6 20. Bd4 Rae8 21. Rad1 Qe6 22. Qe2 Ng5 23. f3 g6 24. h4 Nh7 25. g3 Bg7 26. Kg2 Nf6 27. g4 Nd7 28. g5 h5 29. Qd3 Kh7 30. Qc3 f6 31. e4 Rf7 32. Qc2 Ref8 33. Re3 f5 34. Bxg7 Kxg7 35. Qe2 Re8 36. Re1 Ne5 37. Nxe5 dxe5 38. Rd1 fxe4 39. Rxe4 Qe7 40. Rd5 Qa3 41. Rexe5 Ref8 42. Re3 Qb4 43. Qd3 Qb2+ 44. Kg3 Qc1 45. Qc3+ Qxc3 46. Rxc3 Rf4 47. Rd7+ R4f7 48. Rxf7+ Rxf7 49. c5 Rd7 50. cxb6 cxb6 51. Rc6 Rd4 52. Rxb6 Rxa4 53. Ra6 Ra1 54. b6 Rb1 55. Ra7+ Kf8 56. b7 a4 57. Ra8+ Ke7 58. b8Q Rxb8 59. Rxb8 Kd6 60. Ra8 Ke6 1-0

[Event "Warsaw-ch opB 66th"]
[Site "Warsaw"]
[Date "2013.05.13"]
[Round "3"]
[White "Cuch, Dariusz"]
[Black "Pietras, Zbigniew"]
[Result "0-1"]
[ECO "B40"]
[WhiteElo "1397"]
[PlyCount "66"]
[EventDate "2013.05.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 154 Extra"]
[Source "ChessBase"]
[SourceDate "2013.06.25"]
[SourceVersion "2"]
[SourceVersionDate "2013.06.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Bg5 Be7 6. Bd3 h6 7. Bh4 Qb6 8. Nb3 d6 9. Nc3 a6 10. f4 Nc6 11. a3 Qe3+ 12. Qe2 Qxf4 13. Bg3 Qg4 14. 0-0 Qxe2 15. Nxe2 0-0 16. c4 Bd7 17. Nbd4 Rab8 18. b4 e5 19. Nf3 Na7 20. Nc3 b5 21. Nd5 Nxd5 22. cxd5 Rfc8 23. Rac1 Rxc1 24. Rxc1 Rc8 25. Rc2 g6 26. Bf2 Rxc2 27. Bxc2 Nc8 28. Nh4 Kg7 29. h3 Bd8 30. g4 Nb6 31. Bd3 Nc4 32. Bxc4 bxc4 33. Be3 Bxh4 0-1

[Event "Warsaw-ch opB 66th"]
[Site "Warsaw"]
[Date "2013.05.12"]
[Round "2"]
[White "Pietras, Zbigniew"]
[Black "Szymankiewicz, Jan"]
[Result "0-1"]
[ECO "A00"]
[BlackElo "1481"]
[PlyCount "88"]
[EventDate "2013.05.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 154 Extra"]
[Source "ChessBase"]
[SourceDate "2013.06.25"]
[SourceVersion "2"]
[SourceVersionDate "2013.06.25"]
[SourceQuality "1"]

1. b4 Nf6 2. Bb2 d5 3. e3 Bf5 4. Nf3 Nbd7 5. d4 e6 6. a3 c6 7. Be2 Qc7 8. h3 Be7 9. Nbd2 0-0 10. c4 b6 11. Qb3 a5 12. 0-0 a4 13. Qc3 Ne4 14. Nxe4 Bxe4 15. Nd2 Bg6 16. cxd5 exd5 17. Bb5 Rfc8 18. Rac1 Nb8 19. Nf3 f6 20. Nh4 Ra7 21. Nxg6 hxg6 22. Qd3 Kf7 23. Qd1 Qd7 24. Bxa4 Qf5 25. Bb3 Rh8 26. Qg4 Qxg4 27. hxg4 Rc7 28. g3 Rcc8 29. Bxd5+ cxd5 30. f4 Nd7 31. Kg2 b5 32. Rf2 Nb6 33. Rcc2 Nc4 34. Bc1 Ra8 35. Rc3 Rhc8 36. Rfc2 Nd6 37. Rc5 Ke6 38. Kf3 Nc4 39. Rxb5 Ne5+ 40. fxe5 Rxc2 41. exf6 gxf6 42. Rb6+ Bd6 43. a4 Rxa4 44. b5 Rxc1 0-1

[Event "Warsaw-ch opB 66th"]
[Site "Warsaw"]
[Date "2013.05.11"]
[Round "1"]
[White "Grzenkowicz, Lukasz"]
[Black "Pietras, Zbigniew"]
[Result "1-0"]
[ECO "B40"]
[WhiteElo "1605"]
[PlyCount "105"]
[EventDate "2013.05.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 154 Extra"]
[Source "ChessBase"]
[SourceDate "2013.06.25"]
[SourceVersion "2"]
[SourceVersionDate "2013.06.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nxc6 bxc6 6. c4 Qc7 7. Bd3 Nf6 8. 0-0 Be7 9. f4 d6 10. Qe2 Bd7 11. e5 Ng8 12. Nc3 d5 13. Qg4 g6 14. cxd5 exd5 15. Qf3 Nh6 16. f5 Nxf5 17. g4 Qxe5 18. gxf5 f6 19. Bf4 Qd4+ 20. Qe3 Qxe3+ 21. Bxe3 g5 22. Rae1 Kf7 23. Na4 Bb4 24. Re2 Rhe8 25. Bc5 Ba5 26. b4 Bc7 27. Rfe1 Rxe2 28. Rxe2 Bd8 29. Bd4 h5 30. Nc5 Bc8 31. Ne6 Bb6 32. Bc5 Bd7 33. a4 Re8 34. Bxb6 axb6 35. a5 b5 36. Nc5 Rd8 37. Nb7 Ra8 38. Nc5 Rd8 39. Nxd7 Rxd7 40. Rc2 Rd6 41. a6 c5 42. Bxb5 cxb4 43. Rc7+ Kf8 44. Rc8+ Ke7 45. a7 Rb6 46. a8Q Rxb5 47. Rc7+ Kd6 48. Qc6+ Ke5 49. Qxb5 b3 50. Re7+ Kxf5 51. Qxd5+ Kg6 52. Qe4+ f5 53. Qe6# 1-0

