[Event "Sudety op 4th"]
[Site "Szklarska Poreba"]
[Date "2011.06.04"]
[Round "9"]
[White "Gradalski, Bartosz"]
[Black "Lach, Marek"]
[Result "1-0"]
[ECO "E61"]
[WhiteElo "1627"]
[PlyCount "68"]
[EventDate "2011.05.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 142 Extra"]
[Source "ChessBase"]
[SourceDate "2011.06.27"]
[SourceVersion "1"]
[SourceVersionDate "2011.06.27"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d6 3. Nf3 g6 4. Nc3 Bg7 5. e3 0-0 6. Be2 Nbd7 7. 0-0 c6 8. b4 a5 9. b5 c5 10. Rb1 Nb6 11. h3 h6 12. e4 cxd4 13. Nxd4 Nfd7 14. Nd5 Nc5 15. f3 e6 16. Nxb6 Qxb6 17. Be3 Qc7 18. b6 Qe7 19. Qd2 Bd7 20. Bxh6 Bxh6 21. Qxh6 Qf6 22. Qd2 Rfd8 23. Nb5 Bxb5 24. Rxb5 a4 25. Rd1 Kg7 26. Qe3 e5 27. Rd2 Qe7 28. Bd1 Ne6 29. Rb4 Nc5 30. Bc2 Qe8 31. f4 Ne6 32. f5 Nd4 33. fxg6 fxg6 34. Bd1 Rd7 1-0

[Event "Sudety op 4th"]
[Site "Szklarska Poreba"]
[Date "2011.06.03"]
[Round "8"]
[White "Musialkiewicz, Pawel"]
[Black "Lach, Marek"]
[Result "1-0"]
[ECO "E90"]
[WhiteElo "1970"]
[PlyCount "37"]
[EventDate "2011.05.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 142 Extra"]
[Source "ChessBase"]
[SourceDate "2011.06.27"]
[SourceVersion "1"]
[SourceVersionDate "2011.06.27"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d6 3. Nc3 g6 4. e4 Bg7 5. Nf3 0-0 6. Be3 Nbd7 7. Qd2 e5 8. d5 a5 9. Bd3 Nc5 10. Bc2 Ne8 11. Ne2 f5 12. exf5 gxf5 13. 0-0-0 Nf6 14. h3 Qe8 15. Bxc5 dxc5 16. g4 e4 17. Ng3 fxg4 18. hxg4 Ra6 19. g5 1-0

[Event "Sudety op 4th"]
[Site "Szklarska Poreba"]
[Date "2011.06.02"]
[Round "6"]
[White "Bernaszuk, Krzysztof"]
[Black "Lach, Marek"]
[Result "1/2-1/2"]
[ECO "C64"]
[WhiteElo "1552"]
[PlyCount "57"]
[EventDate "2011.05.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 142 Extra"]
[Source "ChessBase"]
[SourceDate "2011.06.27"]
[SourceVersion "1"]
[SourceVersionDate "2011.06.27"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. 0-0 d6 5. h3 Nf6 6. Re1 0-0 7. c3 a6 8. Ba4 b5 9. Bc2 Bb6 10. d3 h6 11. Nbd2 Bb7 12. Nf1 Ne7 13. Ng3 c5 14. Be3 Qc7 15. Qd2 Kh7 16. Nh4 Rad8 17. Nhf5 Nxf5 18. Nxf5 Bc8 19. g4 Bxf5 20. gxf5 d5 21. Qe2 dxe4 22. dxe4 c4 23. Kh1 g6 24. Rg1 Bxe3 25. fxe3 Qc6 26. Raf1 g5 27. Kh2 Rg8 28. Rg2 Rg7 29. Rfg1 1/2-1/2

[Event "Sudety op 4th"]
[Site "Szklarska Poreba"]
[Date "2011.06.01"]
[Round "5"]
[White "Lach, Marek"]
[Black "Koitka, Jakub"]
[Result "0-1"]
[ECO "A41"]
[BlackElo "1920"]
[PlyCount "44"]
[EventDate "2011.05.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 142 Extra"]
[Source "ChessBase"]
[SourceDate "2011.06.27"]
[SourceVersion "1"]
[SourceVersionDate "2011.06.27"]
[SourceQuality "1"]

1. d4 d6 2. c4 e5 3. dxe5 dxe5 4. Qxd8+ Kxd8 5. e4 Be6 6. Nc3 c6 7. Nf3 Nd7 8. Ng5 Bc5 9. Nxe6+ fxe6 10. f3 Ne7 11. Bg5 h6 12. Bd2 Kc7 13. h4 Rhf8 14. h5 a5 15. 0-0-0 Bd4 16. Ne2 c5 17. Bc3 Nc6 18. a3 b6 19. Kc2 a4 20. Nxd4 exd4 21. f4 Nf6 22. Kd3 Ng4 0-1

[Event "Sudety op 4th"]
[Site "Szklarska Poreba"]
[Date "2011.05.31"]
[Round "3"]
[White "Lach, Marek"]
[Black "Swiderski, Radoslaw"]
[Result "1-0"]
[ECO "E87"]
[BlackElo "1817"]
[PlyCount "99"]
[EventDate "2011.05.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 142 Extra"]
[Source "ChessBase"]
[SourceDate "2011.06.27"]
[SourceVersion "1"]
[SourceVersionDate "2011.06.27"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 e5 7. d5 Ne8 8. Bd3 f5 9. Qd2 Nf6 10. 0-0-0 fxe4 11. Nxe4 Nxe4 12. Bxe4 Nd7 13. Ne2 Nf6 14. Ng3 Nxe4 15. Nxe4 Qe8 16. h4 Qa4 17. b3 Qa3+ 18. Qb2 Qxb2+ 19. Kxb2 Bf5 20. h5 Rae8 21. Kc1 Bxe4 22. fxe4 Rf6 23. Rdf1 Rxf1+ 24. Rxf1 gxh5 25. Rf5 Rf8 26. Rxf8+ Kxf8 27. Bxa7 Kf7 28. Bb8 Bh6+ 29. Kd1 Be3 30. Bxc7 Bd4 31. Bd8 Ke8 32. Ba5 Kd7 33. Ke2 Ke7 34. Bd2 Kd7 35. Kd3 Kc7 36. b4 Bf2 37. Be3 Be1 38. a3 b6 39. c5 b5 40. c6 h4 41. Kc2 Bg3 42. Kb3 Bf4 43. Bg1 Bd2 44. a4 bxa4+ 45. Kxa4 Bc3 46. Kb3 Be1 47. Ka4 Bc3 48. b5 Bd4 49. Bxd4 exd4 50. Kb4 1-0

[Event "Sudety op 4th"]
[Site "Szklarska Poreba"]
[Date "2011.05.31"]
[Round "4"]
[White "Wisniowska, Klaudia"]
[Black "Lach, Marek"]
[Result "1-0"]
[ECO "C64"]
[WhiteElo "2022"]
[PlyCount "75"]
[EventDate "2011.05.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 142 Extra"]
[Source "ChessBase"]
[SourceDate "2011.06.27"]
[SourceVersion "1"]
[SourceVersionDate "2011.06.27"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. 0-0 Nge7 5. c3 Bb6 6. d4 exd4 7. cxd4 0-0 8. d5 a6 9. Ba4 Na7 10. Nc3 d6 11. Bg5 f6 12. Bc1 Ng6 13. Nd4 Kh8 14. Bc2 Ne5 15. Kh1 Bg4 16. f3 Bd7 17. a4 Nc8 18. Nce2 Ne7 19. Nf4 Bxd4 20. Qxd4 N7g6 21. Nxg6+ Nxg6 22. Bd2 Qe7 23. Qb4 b6 24. Rae1 Rae8 25. f4 Qd8 26. Bc3 a5 27. Qd4 Rf7 28. b4 axb4 29. Bxb4 Rfe7 30. Qc3 Qa8 31. Ra1 Bc8 32. a5 b5 33. Bd3 Ba6 34. Rac1 Qa7 35. Rf3 Qb7 36. Qd2 Rxe4 37. Bxe4 Rxe4 38. Re3 1-0

[Event "Sudety op 4th"]
[Site "Szklarska Poreba"]
[Date "2011.05.29"]
[Round "1"]
[White "Zurel, Maxim"]
[Black "Lach, Marek"]
[Result "1-0"]
[ECO "C64"]
[WhiteElo "1852"]
[PlyCount "78"]
[EventDate "2011.05.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 142 Extra"]
[Source "ChessBase"]
[SourceDate "2011.06.27"]
[SourceVersion "1"]
[SourceVersionDate "2011.06.27"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. 0-0 Nge7 5. c3 0-0 6. b4 Bb6 7. a4 a6 8. Bc4 d5 9. exd5 Nxd5 10. Re1 Be6 11. a5 Ba7 12. d3 h6 13. Ra2 Kh8 14. Qe2 Nf4 15. Bxf4 Bxc4 16. dxc4 exf4 17. Rd2 Qf6 18. c5 Rad8 19. Red1 Rxd2 20. Rxd2 Rd8 21. Rxd8+ Qxd8 22. Qd2 b6 23. Qxd8+ Nxd8 24. axb6 cxb6 25. cxb6 Bxb6 26. Nd4 Ne6 27. Nc6 Nd8 28. Nb8 a5 29. Nd7 Bc7 30. b5 Bd6 31. Nd2 a4 32. c4 Nb7 33. Nb6 Bb4 34. Nxa4 Bxd2 35. c5 Na5 36. c6 Nxc6 37. bxc6 Ba5 38. Nc3 g5 39. Nd5 Kg7 1-0

