[Event "Santa Fe Laguna Paiva op"]
[Site "Santa Fe"]
[Date "2019.03.10"]
[Round "4"]
[White "Barrera, Ulises"]
[Black "Lerch, Juan"]
[Result "1-0"]
[ECO "C50"]
[PlyCount "75"]
[EventDate "2019.03.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "ARG"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. Bc4 Nf6 4. Nc3 Be7 5. h3 0-0 6. d4 Nc6 7. d5 Na5 8. Be2 a6 9. b4 c6 10. bxa5 Qxa5 11. Bd2 Nxe4 12. Nxe4 Qxd5 13. Nc3 Qc5 14. 0-0 f5 15. Na4 Qa7 16. Rb1 b5 17. Be3 c5 18. Qd5+ Kh8 19. Nb2 f4 20. Bc1 Bf5 21. Bd3 Qd7 22. Re1 Be6 23. Qe4 g6 24. Bxf4 Bf5 25. Bxe5+ Kg8 26. Qe3 Rf7 27. Bxf5 Qxf5 28. Bg3 Qd7 29. Ng5 Bxg5 30. Qxg5 Qf5 31. Qxf5 Rxf5 32. Re7 d5 33. Rbe1 d4 34. Rd7 a5 35. Ree7 a4 36. Rxh7 c4 37. Rdg7+ Kf8 38. Bd6+ 1-0

[Event "Santa Fe Laguna Paiva op"]
[Site "Santa Fe"]
[Date "2019.03.09"]
[Round "2"]
[White "Lerch, Juan"]
[Black "Hase, Salim"]
[Result "0-1"]
[ECO "C10"]
[BlackElo "1430"]
[PlyCount "41"]
[EventDate "2019.03.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "ARG"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. Nc3 Nc6 5. Bb5 Bd7 6. Nf3 Qb6 7. Be3 cxd4 8. Bxd4 Qc7 9. a3 a6 10. Ba4 b5 11. Bb3 Nge7 12. Qd2 Ng6 13. 0-0-0 Ncxe5 14. Nxe5 Rc8 15. f4 Bxa3 16. Nb1 Be7 17. g3 a5 18. Nc3 Bb4 19. Qd3 Bxc3 20. Qxc3 Qxc3 21. bxc3 0-1

[Event "Santa Fe Laguna Paiva op"]
[Site "Santa Fe"]
[Date "2019.03.09"]
[Round "3"]
[White "Monserrat, Marcelo"]
[Black "Lerch, Juan"]
[Result "1/2-1/2"]
[ECO "C30"]
[WhiteElo "1490"]
[PlyCount "87"]
[EventDate "2019.03.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "ARG"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. e4 e5 2. f4 Nc6 3. Nf3 d6 4. f5 Nf6 5. Nc3 a6 6. d3 Be7 7. Be2 b5 8. a3 Bb7 9. Bg5 Qd7 10. Bxf6 Bxf6 11. Qd2 0-0-0 12. Nd5 Ne7 13. Nxf6 gxf6 14. a4 d5 15. axb5 Qxb5 16. d4 Qxb2 17. 0-0 Qb6 18. Rfb1 Qc6 19. c4 dxe4 20. Qb4 Nxf5 21. d5 Qb6+ 22. Qxb6 cxb6 23. Nd2 Kc7 24. Nxe4 Nd4 25. Bd1 f5 26. Nc3 f4 27. Ne4 Rhg8 28. d6+ Kc6 29. Ba4+ b5 30. cxb5+ axb5 31. Bd1 Kb6 32. Nc3 Bxg2 33. Kf2 Rxd6 34. Na4+ Kc7 35. Rc1+ Bc6 36. Nc5 Rg2+ 37. Kf1 Rdg6 38. Ra7+ Kb6 39. Ra6+ Kc7 40. Rxc6+ Nxc6 41. Nd3 Kd7 42. Rxc6 Kxc6 43. Bf3+ Kd6 44. Bxg2 1/2-1/2

[Event "Santa Fe Laguna Paiva op"]
[Site "Santa Fe"]
[Date "2019.03.09"]
[Round "1"]
[White "Rodriguez, Lisandro"]
[Black "Lerch, Juan"]
[Result "1-0"]
[ECO "C66"]
[WhiteElo "1614"]
[PlyCount "59"]
[EventDate "2019.03.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "ARG"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 Be7 5. Re1 d6 6. h3 Be6 7. c3 Qd7 8. d4 a6 9. Bxc6 bxc6 10. dxe5 dxe5 11. Qxd7+ Bxd7 12. Nxe5 0-0 13. Bg5 Rad8 14. Rd1 Rfe8 15. Bxf6 Bxh3 16. Rxd8 Rxd8 17. Bxe7 Rd1+ 18. Kh2 Bd7 19. Ba3 Be8 20. b3 h5 21. Bb2 f6 22. Nf3 g5 23. Nbd2 Rxa1 24. Bxa1 Kh7 25. e5 g4 26. Ne4 fxe5 27. Nxe5 Kh6 28. Bb2 h4 29. Nxg4+ Kh5 30. Ngf6+ 1-0

