[Event "IECG Q1.2001.0.00136"]
[Site "IECG email"]
[Date "2001.02.05"]
[Round "?"]
[White "Eremin, Nikolay Ivanovich"]
[Black "Leibson, Leonardo Jose"]
[Result "1-0"]
[ECO "E32"]
[WhiteElo "2000"]
[BlackElo "2101"]
[PlyCount "33"]
[EventDate "2001.02.05"]
[EventType "tourn (corr)"]
[EventRounds "4"]
[SourceTitle "Corr 2008"]
[Source "ChessBase"]
[SourceDate "2008.06.24"]
[SourceVersion "1"]
[SourceVersionDate "2008.06.24"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 b6 4. e4 Bb4 5. Bd3 Bb7 6. Qc2 c5 7. d5 b5 8. b3 bxc4 9. bxc4 Ng4 10. Nf3 0-0 11. 0-0 d6 12. Bd2 Nd7 13. Rab1 Nb6 14. h3 Nf6 15. dxe6 fxe6 16. e5 dxe5 17. Nxe5 1-0

[Event "IECG Q1.2001.0.00136"]
[Site "IECG email"]
[Date "2001.02.05"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Eremin, Nikolay Ivanovich"]
[Result "0-1"]
[ECO "D87"]
[WhiteElo "2101"]
[BlackElo "2000"]
[PlyCount "30"]
[EventDate "2001.02.05"]
[EventType "tourn (corr)"]
[EventRounds "4"]
[SourceTitle "Corr 2008"]
[Source "ChessBase"]
[SourceDate "2008.06.24"]
[SourceVersion "1"]
[SourceVersionDate "2008.06.24"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 c5 8. Ne2 Nc6 9. Be3 0-0 10. 0-0 Bg4 11. f3 Na5 12. Bd5 Bd7 13. Rb1 Qc7 14. Bf4 Qc8 15. a3 a6 0-1

[Event "CAPA 7/I/21 email"]
[Site "Argentina"]
[Date "2001.??.??"]
[Round "2"]
[White "Boy, Ricardo"]
[Black "Leibson, Leonardo Jose"]
[Result "1-0"]
[ECO "B17"]
[WhiteElo "2000"]
[BlackElo "2100"]
[PlyCount "25"]
[EventDate "2001.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "ARG"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Nc3 Nb6 7. Be2 Bg4 8. h3 Bxf3 9. Bxf3 e6 10. Qd3 Be7 11. Bg5 Na4 12. Ne2 Nxb2 13. Qb3 1-0

[Event "CAPA 7/I/21 email"]
[Site "Argentina"]
[Date "2001.??.??"]
[Round "4"]
[White "Leibson, Leonardo Jose"]
[Black "Gual, Alberto Mateo"]
[Result "0-1"]
[ECO "E12"]
[WhiteElo "2100"]
[BlackElo "2100"]
[PlyCount "28"]
[EventDate "2001.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "ARG"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 7. e3 g6 8. Bd3 Bg7 9. e4 Nxc3 10. bxc3 0-0 11. 0-0 c5 12. Bg5 Qd6 13. e5 Qd7 14. Qe2 cxd4 0-1

[Event "CAPA 7/I/21 email"]
[Site "Argentina"]
[Date "2001.??.??"]
[Round "6"]
[White "Leibson, Leonardo Jose"]
[Black "Huerga, Jorge Hugo"]
[Result "0-1"]
[ECO "A65"]
[WhiteElo "2100"]
[BlackElo "1970"]
[PlyCount "25"]
[EventDate "2001.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "ARG"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Bf4 Bg7 8. Bb5+ Bd7 9. Qb3 Qe7 10. Bd3 b6 11. Nf3 0-0 12. 0-0 Bg4 13. Nd2 0-1

[Event "CAPA 7/I/21 email"]
[Site "Argentina"]
[Date "2001.??.??"]
[Round "5"]
[White "Schatzyki, Adrian"]
[Black "Leibson, Leonardo Jose"]
[Result "1-0"]
[ECO "B13"]
[WhiteElo "2000"]
[BlackElo "2100"]
[PlyCount "22"]
[EventDate "2001.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "ARG"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Nc3 Nf6 5. Nf3 Bg4 6. Bb5+ Nc6 7. Bxc6+ bxc6 8. 0-0 e6 9. Bg5 h6 10. Bxf6 Qxf6 11. Re1 Bd6 1-0

[Event "CAPA 7/I/20 email"]
[Site "Argentina"]
[Date "2000.??.??"]
[Round "6"]
[White "Leibson, Leonardo Jose"]
[Black "Hernandez, Luis C"]
[Result "0-1"]
[ECO "E97"]
[WhiteElo "2100"]
[BlackElo "2000"]
[PlyCount "36"]
[EventDate "2000.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "ARG"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. 0-0 Nc6 8. d5 Ne7 9. Bg5 Nh5 10. Ne1 Nf4 11. Bxf4 exf4 12. Qd2 g5 13. Nf3 Ng6 14. Nd4 Qf6 15. Rfd1 Re8 16. Qc2 g4 17. a3 Qh4 18. f3 g3 0-1

[Event "CAPA 7/I/20 email"]
[Site "Argentina"]
[Date "2000.??.??"]
[Round "1"]
[White "Leibson, Leonardo Jose"]
[Black "Kalejman, Hector Miguel"]
[Result "0-1"]
[ECO "E12"]
[WhiteElo "2100"]
[BlackElo "2225"]
[PlyCount "35"]
[EventDate "2000.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "ARG"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 7. Qc2 Nxc3 8. bxc3 Be7 9. e4 0-0 10. Bd3 c5 11. 0-0 Qc8 12. Qe2 Ba6 13. Rd1 Bxd3 14. Qxd3 Rd8 15. d5 c4 16. Qe2 exd5 17. exd5 Bf6 18. Ng5 0-1

[Event "CAPA 7/I/20 email"]
[Site "Argentina"]
[Date "2000.??.??"]
[Round "3"]
[White "Leibson, Leonardo Jose"]
[Black "Zattera, Juan Italo"]
[Result "0-1"]
[ECO "D10"]
[WhiteElo "2100"]
[BlackElo "2300"]
[PlyCount "49"]
[EventDate "2000.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "ARG"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Nc3 Nf6 5. Bf4 Qb6 6. Qd2 Bf5 7. e3 Nc6 8. Bb5 a6 9. Bxc6+ Qxc6 10. Rc1 e6 11. Nge2 Bb4 12. Ng3 Bg6 13. Be5 Rc8 14. 0-0 Qd7 15. Bxf6 gxf6 16. a3 Be7 17. f4 0-0 18. f5 exf5 19. Rf2 Rfe8 20. Rcf1 Bd8 21. Nxf5 Ba5 22. b4 Bc7 23. Ne2 Qe6 24. Nc3 Qd7 25. g4 0-1

[Event "CAPA 7/I/20 email"]
[Site "Argentina"]
[Date "2000.??.??"]
[Round "2"]
[White "Nicosia, Mariano"]
[Black "Leibson, Leonardo Jose"]
[Result "1-0"]
[ECO "D23"]
[WhiteElo "2000"]
[BlackElo "2100"]
[PlyCount "55"]
[EventDate "2000.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "ARG"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d5 3. Nf3 dxc4 4. Qa4+ c6 5. Qxc4 Bf5 6. Bg5 Qb6 7. b3 Na6 8. Bxf6 Nb4 9. Na3 exf6 10. e3 Qa5 11. Nb1 Nc2+ 12. Kd1 Nxa1 13. Bd3 Bxd3 14. Qxd3 Qxa2 15. Nfd2 Bb4 16. Ke2 0-0 17. Rc1 Qb2 18. Rc4 a5 19. f4 Rfe8 20. Kf3 Rac8 21. f5 b5 22. Rxb4 axb4 23. Ne4 Nc2 24. Qd1 Qxb3 25. Nd6 Qxe3+ 26. Kg4 h5+ 27. Kh4 Qf2+ 28. Kxh5 1-0

[Event "CAPA 7/I/20 email"]
[Site "Argentina"]
[Date "2000.??.??"]
[Round "4"]
[White "Santillan, Gustavo"]
[Black "Leibson, Leonardo Jose"]
[Result "1-0"]
[ECO "B17"]
[WhiteElo "2000"]
[BlackElo "2100"]
[PlyCount "63"]
[EventDate "2000.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "ARG"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Nxf6+ Nxf6 7. Ne5 Bf5 8. c3 e6 9. g4 Bg6 10. h4 Qd5 11. f3 Bd6 12. Bc4 Qa5 13. Qe2 Nd5 14. b4 Qc7 15. h5 Bxh5 16. Rxh5 Nxc3 17. Qh2 0-0-0 18. Bd2 Nd5 19. Qe2 g6 20. Rh6 Nxb4 21. 0-0-0 Nd5 22. Rdh1 Qb6 23. Kc2 Bxe5 24. Qxe5 Nb4+ 25. Kc3 Nd5+ 26. Bxd5 exd5 27. Qf4 Qa5+ 28. Kb2 Qb5+ 29. Ka1 Rde8 30. g5 Qd3 31. R6h2 h5 32. gxh6 1-0

[Event "CAPA 7/I/20 email"]
[Site "Argentina"]
[Date "2000.??.??"]
[Round "7"]
[White "Sofia, Gerardo"]
[Black "Leibson, Leonardo Jose"]
[Result "1-0"]
[ECO "B17"]
[WhiteElo "2000"]
[BlackElo "2100"]
[PlyCount "43"]
[EventDate "2000.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "ARG"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Nxf6+ Nxf6 7. Bc4 Bf5 8. 0-0 e6 9. Bg5 Be7 10. Re1 Qb6 11. Bb3 h6 12. Bh4 0-0 13. Ne5 Rfd8 14. c3 g5 15. Bg3 c5 16. Qf3 cxd4 17. Nxf7 Kxf7 18. Qxf5 Qxb3 19. Qxf6+ Bxf6 20. axb3 dxc3 21. Rec1 cxb2 22. Rc7+ 1-0

[Event "EM/M/A083 corr"]
[Site "ICCF email"]
[Date "1999.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Baroin, Bernard"]
[Result "1/2-1/2"]
[ECO "E12"]
[WhiteElo "2120"]
[BlackElo "2079"]
[PlyCount "66"]
[EventDate "1999.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 7. Qa4+ Qd7 8. Qc2 Nxc3 9. bxc3 c5 10. e4 cxd4 11. cxd4 Be7 12. Bd3 Nc6 13. 0-0 Rc8 14. Qb1 0-0 15. Be3 f5 16. exf5 exf5 17. Re1 Rcd8 18. Bc4+ Kh8 19. Bf4 Nxd4 20. Nxd4 Qxd4 21. Rxe7 Qxf4 22. Rxb7 Qxc4 23. Rxa7 Qd4 24. Rb7 Rd6 25. Qe1 Re6 26. Qd1 Rfe8 27. h3 Qc3 28. Kh2 Qe5+ 29. Kh1 Rd6 30. Qf1 Qe4 31. Qa6 Rh6 32. Rxb6 Rxh3+ 33. Kg1 Rh4 1/2-1/2

[Event "EM/M/A083 corr"]
[Site "ICCF email"]
[Date "1999.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Czaja, Roman"]
[Result "1/2-1/2"]
[ECO "A40"]
[WhiteElo "2120"]
[BlackElo "2352"]
[PlyCount "49"]
[EventDate "1999.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 g6 2. c4 Bg7 3. Nc3 c5 4. d5 Bxc3+ 5. bxc3 f5 6. h4 Nf6 7. h5 Rg8 8. hxg6 hxg6 9. Qa4 Qb6 10. Nf3 Ne4 11. Ng5 Qf6 12. Nxe4 fxe4 13. Qc2 b6 14. g3 d6 15. Be3 Ba6 16. Rc1 Bxc4 17. Qxe4 b5 18. Bh3 Rh8 19. Bxc5 dxc5 20. d6 Nc6 21. Qxc6+ Kf7 22. Qxc5 Rh5 23. Qd4 Rd8 24. Qxf6+ exf6 25. Bg2 1/2-1/2

[Event "EM/M/A050 corr"]
[Site "ICCF email"]
[Date "1999.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Karelin, Evgeny Petrovich"]
[Result "1/2-1/2"]
[ECO "E12"]
[WhiteElo "2123"]
[BlackElo "2168"]
[PlyCount "34"]
[EventDate "1999.??.??"]
[EventType "tourn (corr)"]
[EventRounds "5"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 Ne4 6. Nxe4 Bxe4 7. Nd2 Bb7 8. e4 Qf6 9. d5 Bc5 10. Nf3 exd5 11. cxd5 Qg6 12. b4 Qxe4+ 13. Qe2 Qxe2+ 14. Bxe2 Bd6 15. Bc4 0-0 16. 0-0 Re8 17. Bb2 a5 1/2-1/2

[Event "EM/M/A083 corr"]
[Site "ICCF email"]
[Date "1999.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Ward, Richard"]
[Result "0-1"]
[ECO "E94"]
[WhiteElo "2120"]
[BlackElo "2233"]
[PlyCount "76"]
[EventDate "1999.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. d5 a5 8. 0-0 Na6 9. h3 Nc5 10. Qc2 Nh5 11. Be3 Nf4 12. a3 f5 13. Bxf4 exf4 14. Bd3 fxe4 15. Bxe4 Bxc3 16. bxc3 Qf6 17. Nd4 Bd7 18. Rae1 Rae8 19. Bf3 Re5 20. Re2 Rfe8 21. Rfe1 Qg5 22. Kh2 R8e7 23. Qd2 Kg7 24. Nb5 Bf5 25. Rxe5 dxe5 26. d6 cxd6 27. Nxd6 Qf6 28. Nxf5+ gxf5 29. Bd5 Nb3 30. Qc2 a4 31. Rg1 e4 32. g4 fxg3+ 33. Rxg3+ Kh6 34. Qe2 Qd6 35. Kg1 Qf4 36. Kg2 Qd2 37. Qxd2+ Nxd2 38. Rg8 f4 0-1

[Event "EM/M/A083 corr"]
[Site "ICCF email"]
[Date "1999.??.??"]
[Round "?"]
[White "Varberg, Kenneth"]
[Black "Leibson, Leonardo Jose"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2142"]
[BlackElo "2120"]
[PlyCount "47"]
[EventDate "1999.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nc3 e6 5. g4 Bg6 6. Nge2 c5 7. h4 cxd4 8. Nxd4 h5 9. f4 hxg4 10. Bb5+ Nd7 11. f5 Rxh4 12. Rf1 exf5 13. Qe2 Bc5 14. e6 Bxd4 15. exd7+ Kf8 16. Bg5 Bf6 17. Bxh4 Bxh4+ 18. Kd1 Nf6 19. Rh1 Ne4 20. Nxe4 dxe4 21. Qh2 a6 22. Qxh4 axb5 23. Qg3 Kg8 24. Ke2 1-0

[Event "EM/M/A023 email"]
[Site "ICCF email"]
[Date "1998.01.15"]
[Round "?"]
[White "Vodep, Otto"]
[Black "Leibson, Leonardo Jose"]
[Result "1-0"]
[ECO "E10"]
[WhiteElo "2325"]
[BlackElo "2115"]
[PlyCount "55"]
[EventDate "1998.??.??"]
[EventType "tourn (corr)"]
[EventRounds "5"]
[SourceTitle "Corr 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.19"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 d6 5. Nc3 Be7 6. e4 0-0 7. h3 Re8 8. Bd3 exd5 9. cxd5 a6 10. a4 b6 11. 0-0 Nfd7 12. Bf4 Bb7 13. Nb1 Nf6 14. Nbd2 Nbd7 15. Re1 Qc7 16. Rc1 Nf8 17. Bh2 Ng6 18. b4 a5 19. bxa5 bxa5 20. Bb5 Rec8 21. Nc4 Rd8 22. e5 Nxd5 23. exd6 Bxd6 24. Nxd6 Rxd6 25. Bxd6 Qxd6 26. Ng5 Qf8 27. Qb3 Rb8 28. Re8 1-0

[Event "EM/M/A023 email"]
[Site "ICCF email"]
[Date "1998.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Dempster, Dave"]
[Result "1-0"]
[ECO "A87"]
[WhiteElo "2115"]
[BlackElo "2225"]
[PlyCount "89"]
[EventDate "1998.??.??"]
[EventType "tourn (corr)"]
[EventRounds "5"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 f5 2. g3 Nf6 3. Bg2 d6 4. Nf3 g6 5. 0-0 Bg7 6. c4 0-0 7. Nc3 Qe8 8. Qb3 c6 9. h3 Na6 10. Bf4 Nh5 11. Bg5 e5 12. dxe5 dxe5 13. Rad1 Nc5 14. Qa3 Ne6 15. e4 Nxg5 16. Nxg5 h6 17. Nf3 Be6 18. exf5 gxf5 19. b3 Qg6 20. Ne2 f4 21. g4 e4 22. gxh5 Qxh5 23. Qd6 exf3 24. Qxe6+ Kh8 25. Bxf3 Qxf3 26. Nd4 Qc3 27. Nf5 Rf6 28. Qd7 Rg6+ 29. Kh2 Be5 30. f3 Rag8 31. Rf2 Qe3 32. Rdf1 Qc5 33. Re2 Bf6 34. Rd1 b5 35. Nd6 R8g7 36. Qf5 Bd4 37. Nf7+ Kh7 38. Re8 Rg8 39. Ne5 Bxe5 40. Rd7+ R8g7 41. Rxg7+ Kxg7 42. Qd7+ Kf6 43. Qe6+ Kg5 44. Qg4+ Kf6 45. Re6+ 1-0

[Event "EM/M/A023 email"]
[Site "ICCF email"]
[Date "1998.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Fahrbach, Manfred"]
[Result "1/2-1/2"]
[ECO "D59"]
[WhiteElo "2115"]
[BlackElo "2240"]
[PlyCount "71"]
[EventDate "1998.??.??"]
[EventType "tourn (corr)"]
[EventRounds "5"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 h6 6. Bh4 0-0 7. e3 b6 8. cxd5 Nxd5 9. Bxe7 Qxe7 10. Rc1 Bb7 11. Be2 Nf6 12. 0-0 Nbd7 13. h3 c5 14. Qc2 cxd4 15. Nxd4 Rfd8 16. Rfd1 Ne5 17. Qa4 a6 18. b4 b5 19. Qb3 Nd5 20. Nxd5 Bxd5 21. Qb1 Qb7 22. Bf1 Rac8 23. Nb3 Nd7 24. Rxc8 Rxc8 25. Qb2 Rc7 26. a3 Kf8 27. Nc1 f6 28. a4 bxa4 29. Qa3 Qc6 30. b5+ Qc5 31. Qxa4 axb5 32. Bxb5 Nb6 33. Qa6 Qc2 34. Qa3+ Kf7 35. Qd3 e5 36. Ne2 1/2-1/2

[Event "EM/M/A027 email"]
[Site "ICCF email"]
[Date "1998.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Neto, Horacio"]
[Result "1/2-1/2"]
[ECO "A70"]
[WhiteElo "2115"]
[BlackElo "2455"]
[PlyCount "57"]
[EventDate "1998.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. e4 Bg7 8. h3 0-0 9. Bd3 b5 10. Bxb5 Nxe4 11. Nxe4 Qa5+ 12. Nfd2 Qxb5 13. Nxd6 Qa6 14. N2c4 Nd7 15. 0-0 Nb6 16. Nxb6 Qxb6 17. Nxc8 Raxc8 18. Qc2 Rfd8 19. Rd1 Bd4 20. Be3 Qxb2 21. Qxb2 Bxb2 22. Rab1 Be5 23. Rbc1 Bd6 24. Rc3 Rd7 25. Rdc1 Rdc7 26. f4 c4 27. Kf2 f5 28. a3 Kf7 29. Ke2 1/2-1/2

[Event "ICCF email"]
[Site "ICCF email"]
[Date "1998.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Soberano, Joaquim Pedro"]
[Result "0-1"]
[ECO "A58"]
[PlyCount "28"]
[EventDate "1998.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "E-Mail 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 g6 6. e3 Bg7 7. d6 Nxa6 8. Na3 Bb7 9. Nc4 Ne4 10. dxe7 Qxe7 11. Na5 Bc8 12. Nb3 Nb4 13. a3 Bc3+ 14. bxc3 Qf6 0-1

[Event "EM/M/A027 email"]
[Site "ICCF email"]
[Date "1998.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Vigny, Philippe"]
[Result "0-1"]
[ECO "E70"]
[WhiteElo "2115"]
[BlackElo "2100"]
[PlyCount "38"]
[EventDate "1998.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 0-0 5. e5 Ne8 6. Nf3 d6 7. Bf4 Nc6 8. exd6 cxd6 9. d5 Ne5 10. Be2 Nxf3+ 11. Bxf3 e5 12. Be3 f5 13. 0-0 e4 14. Be2 f4 15. Bd2 f3 16. gxf3 exf3 17. Bxf3 Qh4 18. Re1 Nf6 19. Nb5 Ng4 0-1

[Event "EM/M/A027 email"]
[Site "ICCF email"]
[Date "1998.??.??"]
[Round "?"]
[White "Parry, Michael"]
[Black "Leibson, Leonardo Jose"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "2461"]
[BlackElo "2115"]
[PlyCount "65"]
[EventDate "1998.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. b4 d5 2. Bb2 e6 3. e3 Nf6 4. b5 Bd6 5. Nf3 0-0 6. c4 b6 7. Nc3 dxc4 8. Bxc4 c6 9. a4 Bb7 10. 0-0 Qc7 11. d3 a6 12. Qe2 Rd8 13. Rfc1 Ng4 14. g3 Nf6 15. Ng5 h6 16. Nge4 Be7 17. f4 Qd7 18. Nxf6+ Bxf6 19. d4 g6 20. Ba3 Bg7 21. Ra2 Rc8 22. Bd3 cxb5 23. axb5 Bxd4 24. bxa6 Bxa6 25. Bxa6 Rxc3 26. Rxc3 Bxc3 27. Bb5 Nc6 28. Qf3 Rc8 29. Kg2 Bg7 30. Rc2 Qa7 31. Rxc6 Rxc6 32. Qxc6 Qxa3 33. Qxb6 1/2-1/2

[Event "EM/M/A023 email"]
[Site "ICCF email"]
[Date "1998.??.??"]
[Round "?"]
[White "Sampieri, Maurizio"]
[Black "Leibson, Leonardo Jose"]
[Result "1-0"]
[ECO "E13"]
[WhiteElo "2205"]
[BlackElo "2115"]
[PlyCount "87"]
[EventDate "1998.??.??"]
[EventType "tourn (corr)"]
[EventRounds "5"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Bg5 Bb4+ 4. Nc3 h6 5. Bh4 Bxc3+ 6. bxc3 0-0 7. e3 d6 8. Nf3 b6 9. Bd3 Bb7 10. 0-0 Nbd7 11. Nd2 c5 12. f3 Qc7 13. Qc2 Rac8 14. a4 Rfe8 15. a5 bxa5 16. Qa4 Nb6 17. Qxa5 Nfd7 18. Rfb1 Ra8 19. Rb2 Rec8 20. Bg3 Rf8 21. Nb1 Rfc8 22. Na3 Bc6 23. Nb5 Bxb5 24. cxb5 cxd4 25. cxd4 Qc3 26. Qa3 Qxa3 27. Rxa3 Rc1+ 28. Kf2 Nc8 29. Raa2 f6 30. Rc2 Rxc2+ 31. Rxc2 Kf7 32. e4 Rb8 33. Ke3 Ke7 34. Rc6 e5 35. Be2 exd4+ 36. Kxd4 Nf8 37. Rc7+ Kd8 38. Rf7 Ne6+ 39. Kd5 Nc7+ 40. Kc4 Ne6 41. f4 Nc5 42. e5 Nb6+ 43. Kb4 Nd5+ 44. Ka3 1-0

[Event "ICCF email"]
[Site "ICCF email"]
[Date "1998.??.??"]
[Round "?"]
[White "Vujadinovic, Milan"]
[Black "Leibson, Leonardo Jose"]
[Result "1/2-1/2"]
[ECO "B12"]
[PlyCount "33"]
[EventDate "1998.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "E-Mail 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Ne7 6. 0-0 Nd7 7. Nh4 c5 8. c3 Rc8 9. Nxf5 Nxf5 10. Bd3 g6 11. Bxf5 gxf5 12. Nd2 Rg8 13. Qh5 Qg5 14. Qxg5 Rxg5 15. Nf3 Rg8 16. Be3 Be7 17. Rfc1 1/2-1/2

[Event "EM/M/A013 email"]
[Site "ICCF email"]
[Date "1997.05.02"]
[Round "?"]
[White "Kosmol, Horst"]
[Black "Leibson, Leonardo Jose"]
[Result "1/2-1/2"]
[ECO "B17"]
[WhiteElo "2260"]
[BlackElo "2175"]
[PlyCount "57"]
[EventDate "1997.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.19"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.19"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Ng5 Ngf6 6. Bd3 e6 7. N1f3 Bd6 8. Qe2 Qe7 9. 0-0 h6 10. Ne4 Nxe4 11. Qxe4 Nf6 12. Qh4 b6 13. Ne5 Bb7 14. Bg5 0-0-0 15. Be3 g5 16. Qg3 Qc7 17. f4 gxf4 18. Bxf4 Nd5 19. Qh4 c5 20. Be4 Ba6 21. Bxd5 Bxf1 22. Rxf1 exd5 23. Nxf7 Bxf4 24. Nxh8 Be3+ 25. Kh1 Bxd4 26. Ng6 Bxb2 27. Qxh6 Re8 28. Qh3+ Kb7 29. Qb3 1/2-1/2

[Event "EM/M/A012 email"]
[Site "ICCF email"]
[Date "1997.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Ejermo, Olof"]
[Result "1/2-1/2"]
[ECO "D19"]
[WhiteElo "2175"]
[BlackElo "2100"]
[PlyCount "34"]
[EventDate "1997.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5 6. e3 e6 7. Bxc4 Bb4 8. 0-0 Nbd7 9. Qe2 Bg6 10. Bd2 0-0 11. Ne4 Bxd2 12. Nexd2 Qe7 13. h3 e5 14. Nxe5 Nxe5 15. dxe5 Qxe5 16. Nf3 Qa5 17. Rfd1 Rfd8 1/2-1/2

[Event "EM/M/A012 email"]
[Site "ICCF email"]
[Date "1997.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Gysi, Adolf"]
[Result "0-1"]
[ECO "D37"]
[WhiteElo "2175"]
[BlackElo "2485"]
[PlyCount "78"]
[EventDate "1997.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Nbd7 5. Bf4 dxc4 6. a3 Nd5 7. Bd2 c5 8. e4 cxd4 9. Nxd4 N5b6 10. Be3 Be7 11. Qc2 Ne5 12. Rd1 Bd7 13. Be2 0-0 14. 0-0 Qe8 15. f4 Ng6 16. f5 Ne5 17. fxe6 fxe6 18. Rxf8+ Qxf8 19. Rf1 Qd8 20. Rd1 Bc5 21. Kh1 Qe7 22. Bf4 Qf6 23. Be3 Rf8 24. b4 cxb3 25. Qxb3 Kh8 26. a4 Nc6 27. Nxc6 Bxe3 28. Nxa7 Nxa4 29. Nxa4 Bxa7 30. Nb2 Bc6 31. Qf3 Qe7 32. Qg4 Bb8 33. Nd3 Qd6 34. e5 Qd5 35. h3 Bxe5 36. Nxe5 Qxe5 37. Bc4 Re8 38. Rf1 g6 39. Qh4 Kg7 0-1

[Event "EM/M/A013 email"]
[Site "ICCF email"]
[Date "1997.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Johnson, Bjoern"]
[Result "0-1"]
[ECO "E83"]
[WhiteElo "2175"]
[BlackElo "2250"]
[PlyCount "32"]
[EventDate "1997.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 Nc6 7. Nge2 Rb8 8. d5 Na5 9. Bxa7 Ra8 10. Bd4 Nxc4 11. Ng3 Na5 12. b4 c5 13. dxc6 Nxc6 14. Rc1 Be6 15. Bxf6 Bxf6 16. b5 Qa5 0-1

[Event "EM/M/A013 email"]
[Site "ICCF email"]
[Date "1997.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Limayo, Edgardo V"]
[Result "1-0"]
[ECO "A89"]
[WhiteElo "2175"]
[BlackElo "2168"]
[PlyCount "99"]
[EventDate "1997.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. Nf3 Bg7 5. c4 d6 6. Nc3 0-0 7. 0-0 Nc6 8. d5 Na5 9. Qa4 c5 10. dxc6 Nxc6 11. Be3 Bd7 12. Qc2 Rc8 13. Rad1 Na5 14. b3 b5 15. Nd4 bxc4 16. b4 Nc6 17. Bxc6 Bxc6 18. Ne6 Qd7 19. Nxf8 Kxf8 20. Bd4 f4 21. Bxf6 Bxf6 22. Nd5 Be5 23. Qxc4 Ba4 24. Qe4 Bxd1 25. Rxd1 Qa4 26. Rd2 Qc6 27. Qd3 fxg3 28. hxg3 e6 29. Ne3 Qb6 30. Rc2 Rxc2 31. Nxc2 Ke7 32. e4 h5 33. Kg2 g5 34. a3 a6 35. a4 h4 36. f4 gxf4 37. gxh4 Qc6 38. b5 axb5 39. axb5 Qc5 40. Ne1 Bf6 41. Nf3 Kd7 42. Qb3 Bd8 43. Qd3 Qh5 44. Kh3 Bf6 45. e5 Bxe5 46. Nxe5+ Qxe5 47. Kg4 d5 48. Qh7+ Kd6 49. b6 Kc6 50. Qc7+ 1-0

[Event "EM/M/A013 email"]
[Site "ICCF email"]
[Date "1997.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Pukropski, Goetz"]
[Result "1/2-1/2"]
[ECO "E17"]
[WhiteElo "2175"]
[BlackElo "2160"]
[PlyCount "68"]
[EventDate "1997.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. 0-0 0-0 7. d5 Na6 8. Nc3 Bb4 9. Bd2 Bxc3 10. Bxc3 exd5 11. Nh4 Ne4 12. cxd5 Nxc3 13. bxc3 Re8 14. e4 Qf6 15. Qd4 Qxd4 16. cxd4 g6 17. Rab1 c6 18. dxc6 dxc6 19. Rfd1 Rad8 20. f4 c5 21. d5 Nb4 22. Rd2 Ba6 23. e5 f6 24. exf6 Rf8 25. a3 Nd3 26. Nf3 Rxd5 27. Ne5 Rd4 28. Rbd1 c4 29. Bf1 Rxf6 30. Nxc4 Bxc4 31. Bxd3 Bxd3 32. Rxd3 Rxd3 33. Rxd3 Rf7 34. h3 Re7 1/2-1/2

[Event "EM/M/A012 email"]
[Site "ICCF email"]
[Date "1997.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Russel, Hanon W"]
[Result "1/2-1/2"]
[ECO "A51"]
[WhiteElo "2175"]
[BlackElo "2240"]
[PlyCount "119"]
[EventDate "1997.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nf3 Nc6 5. a3 d6 6. Qc2 d5 7. e3 Bg4 8. cxd5 Qxd5 9. Bc4 Qa5+ 10. b4 Bxb4+ 11. axb4 Qxa1 12. Qxe4 Bxf3 13. Qxf3 0-0 14. Qe4 Qxe5 15. Qxe5 Nxe5 16. Be2 a5 17. bxa5 Rxa5 18. Bb2 Rd8 19. Bc3 Rc5 20. 0-0 Nc6 21. Rd1 Rxd1+ 22. Bxd1 f6 23. Bb3+ Kf8 24. Kf1 Ke7 25. Ke2 Kd7 26. f4 b5 27. h3 b4 28. Bb2 Rb5 29. Kd3 Rb8 30. e4 Na5 31. Ba4+ Ke6 32. Kd4 Rb6 33. g3 h6 34. e5 fxe5+ 35. fxe5 Nc6+ 36. Ke4 Ra6 37. Bb5 Rb6 38. Be2 Rb8 39. Nd2 Nd8 40. Nb3 Nc6 41. Bc4+ Ke7 42. Kd5 Nd8 43. Nd4 Ke8 44. Nf5 g6 45. Nxh6 Nb7 46. Bf1 Rd8+ 47. Kc6 Na5+ 48. Kb5 Rd1 49. Kxa5 Rxf1 50. Kxb4 Rf3 51. g4 Rxh3 52. Ng8 Kf7 53. Nf6 Ke6 54. Kc5 Rb3 55. Bd4 Rb1 56. Nd5 Rc1+ 57. Bc3 Rxc3+ 58. Nxc3 Kxe5 59. Nd5 Ke4 60. Kc4 1/2-1/2

[Event "EM/M/A012 email"]
[Site "ICCF email"]
[Date "1997.??.??"]
[Round "?"]
[White "Vetter, Joachim"]
[Black "Leibson, Leonardo Jose"]
[Result "1-0"]
[ECO "B17"]
[WhiteElo "2160"]
[BlackElo "2175"]
[PlyCount "63"]
[EventDate "1997.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Nd7 5. Ng5 Ngf6 6. Bd3 e6 7. Qe2 Bd6 8. N1f3 h6 9. Ne4 Nxe4 10. Qxe4 Nf6 11. Qh4 c5 12. dxc5 Bxc5 13. 0-0 Bd7 14. Ne5 Bd6 15. Re1 Bc6 16. Bg5 Bxe5 17. Rxe5 Rf8 18. Bd2 Nd7 19. Qxd8+ Rxd8 20. Ra5 b6 21. Rxa7 Nc5 22. Rc7 Nxd3 23. cxd3 Bd7 24. Bb4 Rg8 25. Rb7 b5 26. d4 Rc8 27. Re1 g5 28. d5 Rg6 29. h3 Rc2 30. Bc3 Bc8 31. Ra7 g4 32. d6 1-0

[Event "ICCF email"]
[Site "ICCF email"]
[Date "1996.??.??"]
[Round "?"]
[White "Blair, David"]
[Black "Leibson, Leonardo Jose"]
[Result "1-0"]
[ECO "E12"]
[PlyCount "49"]
[EventDate "1996.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "E-Mail 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 b6 4. Nf3 Bb7 5. a3 c5 6. d5 exd5 7. cxd5 d6 8. e4 a6 9. a4 Be7 10. Bd3 0-0 11. h3 Re8 12. 0-0 Nbd7 13. Bf4 Nf8 14. Bh2 Ng6 15. Re1 Rc8 16. Qe2 Ra8 17. Qc2 Qc7 18. Nd2 Nd7 19. f4 Bf6 20. Nc4 Bd4+ 21. Kh1 Ndf8 22. Rab1 Rac8 23. e5 dxe5 24. fxe5 Nxe5 25. Bf5 1-0

[Event "EM/M/A003 email"]
[Site "ICCF email"]
[Date "1996.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Hund, Gerhard"]
[Result "0-1"]
[ECO "D30"]
[WhiteElo "2175"]
[BlackElo "2200"]
[PlyCount "80"]
[EventDate "1996.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. cxd5 exd5 5. e3 Be7 6. Bd3 0-0 7. 0-0 Re8 8. Nbd2 b6 9. e4 dxe4 10. Nxe4 Bb7 11. Re1 Nbd7 12. Qc2 Nxe4 13. Bxe4 Bxe4 14. Rxe4 Nf6 15. Re2 Bd6 16. Bg5 Rxe2 17. Qxe2 h6 18. Bh4 g5 19. Bg3 Bxg3 20. hxg3 Qd6 21. Qe5 Re8 22. Qxd6 cxd6 23. Re1 Rc8 24. Kf1 Kf8 25. Re2 Nd5 26. Ke1 f5 27. Re6 Re8 28. Rxe8+ Kxe8 29. Kd2 Kd7 30. a3 Nf6 31. Kd3 Kc6 32. Nd2 Ng4 33. f3 Nf6 34. a4 a6 35. Kc2 h5 36. Nf1 Nd5 37. b3 b5 38. Kd2 Kb6 39. Kd3 bxa4 40. bxa4 Ka5 0-1

[Event "EM/M/A003 email"]
[Site "ICCF email"]
[Date "1996.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Mrugala, Arthur"]
[Result "0-1"]
[ECO "A41"]
[WhiteElo "2175"]
[BlackElo "2265"]
[PlyCount "100"]
[EventDate "1996.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 d6 2. c4 e5 3. dxe5 dxe5 4. Qxd8+ Kxd8 5. Nf3 f6 6. e4 Bc5 7. Bd2 Nc6 8. Be2 Nb4 9. Na3 Ne7 10. 0-0 Nec6 11. Rfd1 Bd7 12. Nb5 a6 13. Nc3 Nc2 14. Rac1 N2d4 15. Nxd4 Nxd4 16. Kf1 Kc8 17. Nd5 a5 18. Nc3 Rd8 19. Be3 Be6 20. b3 Ra6 21. Na4 Ba3 22. Rc3 Rad6 23. Rcd3 R6d7 24. f3 f5 25. Nc3 Bb4 26. Bg5 Rf8 27. Be3 fxe4 28. Nxe4 Bf5 29. Bf2 Rdf7 30. Bxd4 Bxe4 31. Bxe5 Bxd3 32. Bxd3 g6 33. Bb2 Re8 34. Bd4 Rd7 35. Bf2 c5 36. h4 Kb8 37. g4 b6 38. f4 Bc3 39. Bc2 Rxd1+ 40. Bxd1 Rf8 41. Ke2 Bd4 42. Be1 Re8+ 43. Kf1 Kc7 44. Bc2 Re7 45. f5 gxf5 46. Bg3+ Kc6 47. Bxf5 h5 48. Be1 Kc7 49. Bg3+ Kb7 50. Kg2 Re2+ 0-1

[Event "EM/M/A003 email"]
[Site "ICCF email"]
[Date "1996.??.??"]
[Round "?"]
[White "Nielsen, Jan Holst"]
[Black "Leibson, Leonardo Jose"]
[Result "1-0"]
[ECO "E16"]
[WhiteElo "2220"]
[BlackElo "2175"]
[PlyCount "23"]
[EventDate "1996.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 c5 6. d5 exd5 7. Nh4 g6 8. Nc3 Bg7 9. 0-0 0-0 10. Bg5 a6 11. Nxd5 d6 12. Nxf6+ 1-0

[Event "EM/M/A003 email"]
[Site "ICCF email"]
[Date "1996.??.??"]
[Round "?"]
[White "Sande, Oystein"]
[Black "Leibson, Leonardo Jose"]
[Result "1/2-1/2"]
[ECO "A06"]
[WhiteElo "2530"]
[BlackElo "2175"]
[PlyCount "84"]
[EventDate "1996.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. 0-0 Be7 5. b3 0-0 6. Bb2 a6 7. c4 b6 8. Qc2 Bb7 9. d3 c5 10. Nbd2 Nc6 11. a3 Rc8 12. e4 d4 13. Rfe1 b5 14. Nf1 Qc7 15. Bc1 Nd7 16. Ng5 Nce5 17. Nh3 Bf6 18. f4 Nc6 19. e5 Be7 20. Nf2 Nd8 21. Ne4 bxc4 22. bxc4 Rb8 23. Rb1 f6 24. exf6 gxf6 25. g4 f5 26. gxf5 Bh4 27. Neg3 Bxg2 28. Rxb8 Bxf1 29. Rxd8 Qxd8 30. Kxf1 exf5 31. Qg2 Qa8 32. Qxa8 Rxa8 33. Re6 Bxg3 34. hxg3 Kf7 35. Rc6 Rb8 36. Ke2 Rb6 37. Rc7 Ke6 38. Bd2 Ke7 39. Ra7 Re6+ 40. Kf3 h5 41. a4 Kd8 42. Kf2 Nf6 1/2-1/2

[Event "LADAC corr"]
[Site "Argentina"]
[Date "1993.??.??"]
[Round "?"]
[White "Cranbourne, Carlos Leon"]
[Black "Leibson, Leonardo Jose"]
[Result "1-0"]
[ECO "B13"]
[PlyCount "27"]
[EventDate "1993.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 Nc6 6. cxd5 Nxd5 7. Bc4 Ndb4 8. Nf3 Bf5 9. 0-0 Nc2 10. d5 Nxa1 11. dxc6 bxc6 12. Ne5 e6 13. Qf3 Qc7 14. Nxf7 1-0

[Event "LADAC corr"]
[Site "Argentina"]
[Date "1993.??.??"]
[Round "?"]
[White "Taiana, Domingo Osvaldo"]
[Black "Leibson, Leonardo Jose"]
[Result "1-0"]
[ECO "B12"]
[PlyCount "35"]
[EventDate "1993.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nc3 e6 5. g4 Bg6 6. Nge2 c5 7. Be3 Nc6 8. dxc5 Nxe5 9. Nf4 a6 10. Be2 Nc6 11. Na4 Qa5+ 12. c3 Be4 13. f3 Bg6 14. h4 h6 15. Nxg6 fxg6 16. Qc2 Nge7 17. Nb6 Rd8 18. a3 1-0

[Event "LADAC corr"]
[Site "Argentina"]
[Date "1993.??.??"]
[Round "?"]
[White "Zuzek, Teodoro Jose"]
[Black "Leibson, Leonardo Jose"]
[Result "1-0"]
[ECO "B22"]
[PlyCount "89"]
[EventDate "1993.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 Nc6 6. cxd5 Nxd5 7. Bc4 Nb6 8. Bb5 Bd7 9. Nf3 e6 10. 0-0 Be7 11. d5 Nxd5 12. Nxd5 exd5 13. Qxd5 0-0 14. Bg5 Bxg5 15. Nxg5 a6 16. Bc4 Be8 17. Qf5 g6 18. Qf4 Qd4 19. Qxd4 Nxd4 20. Rad1 Nf5 21. Rd2 Bc6 22. Rfd1 Nh4 23. f3 h6 24. Ne4 Rac8 25. Nd6 Bxf3 26. Nxc8 Rxc8 27. Be2 Bxg2 28. Rd8+ Rxd8 29. Rxd8+ Kg7 30. Kf2 Bc6 31. Rc8 Bd5 32. Bc4 Bxc4 33. Rxc4 Nf5 34. Rc7 Nd6 35. Rd7 Ne4+ 36. Ke3 Nc5 37. Rc7 b6 38. Rc6 Nd7 39. Rd6 Ne5 40. b3 Ng4+ 41. Kf3 Nxh2+ 42. Kg3 Nf1+ 43. Kf2 Nh2 44. Rxb6 f5 45. Rxa6 1-0

[Event "ARG-Cup2 sf09 corr"]
[Site "Argentina"]
[Date "1992.??.??"]
[Round "?"]
[White "Alfaro, Carmelo R"]
[Black "Leibson, Leonardo Jose"]
[Result "1-0"]
[ECO "B12"]
[PlyCount "35"]
[EventDate "1992.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. g4 Bg6 5. h4 h5 6. e6 hxg4 7. Bd3 Bh5 8. exf7+ Kxf7 9. Ne2 Nf6 10. Nbc3 Nbd7 11. Bf4 e6 12. Ng3 Qb6 13. Rb1 Re8 14. a3 e5 15. dxe5 Nxe5 16. Bxe5 Rxe5+ 17. Nce2 Bc5 18. 0-0 1-0

[Event "ARG-Cup2 sf09 corr"]
[Site "Argentina"]
[Date "1992.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Dulik, Jorge Pedro"]
[Result "0-1"]
[ECO "A57"]
[PlyCount "34"]
[EventDate "1992.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. e3 g6 6. Nc3 d6 7. bxa6 Bg7 8. Bb5+ Nfd7 9. Nf3 0-0 10. 0-0 Nxa6 11. Bc6 Rb8 12. a3 Nb6 13. Qc2 c4 14. e4 Nc5 15. Be3 Nd3 16. Rab1 f5 17. Nd4 f4 0-1

[Event "ARG-ch cand corr"]
[Site "Argentina"]
[Date "1992.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Pisani, Carlos Alejandro"]
[Result "0-1"]
[ECO "A71"]
[PlyCount "44"]
[EventDate "1992.??.??"]
[EventType "tourn (corr)"]
[EventRounds "4"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. e4 Bg7 8. Bg5 h6 9. Bh4 g5 10. Bg3 Nh5 11. Bb5+ Kf8 12. 0-0 a6 13. Be2 Nxg3 14. fxg3 Nd7 15. Qd3 b5 16. Rac1 Ra7 17. Kh1 Ne5 18. Nxe5 Bxe5 19. b3 g4 20. Nd1 h5 21. Ne3 Qg5 22. b4 h4 0-1

[Event "ARG-Cup2 corr9293"]
[Site "Argentina"]
[Date "1992.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Tosti, Ricardo Remigio"]
[Result "0-1"]
[ECO "A70"]
[PlyCount "48"]
[EventDate "1992.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Nf3 Bg7 8. Bd3 0-0 9. 0-0 Bg4 10. h3 Bxf3 11. Qxf3 Nbd7 12. Qd1 a6 13. a4 Rc8 14. Bf4 Qc7 15. Re1 Rfe8 16. Bh2 c4 17. Bc2 Nc5 18. Kh1 Nfd7 19. a5 Ne5 20. f4 Ned3 21. Bxd3 Nxd3 22. Re2 Nxb2 23. Qc2 Nd3 24. Ra4 Bxc3 0-1

[Event "Buenos Aires GP I"]
[Site "Buenos Aires"]
[Date "1992.??.??"]
[Round "1"]
[White "Palmisano, Juan Antonio"]
[Black "Leibson, Leonardo Jose"]
[Result "1-0"]
[ECO "E12"]
[PlyCount "87"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ARG"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Bg5 Bb7 5. e3 h6 6. Bh4 g5 7. Bg3 Bb4+ 8. Nbd2 Ne4 9. a3 Nxg3 10. hxg3 Be7 11. Ne5 d6 12. Ng4 Bf8 13. f3 Bg7 14. Bd3 f5 15. Nf2 c5 16. Qe2 0-0 17. 0-0-0 Qf6 18. g4 cxd4 19. exd4 Nc6 20. Nb3 Rad8 21. Bb1 fxg4 22. Nxg4 Qf4+ 23. Rd2 Bc8 24. Nxh6+ Bxh6 25. Rxh6 Rf6 26. Rh5 Ne7 27. Qd3 Rg6 28. Bc2 e5 29. g4 Bb7 30. d5 Rf8 31. Kb1 Ba6 32. Rdh2 e4 33. Qd4 Qf6 34. Qxe4 Rg7 35. Rh7 Ng6 36. R7h6 Kf7 37. Nd4 Re8 38. Ne6 Bc8 39. Rxg6 Rxg6 40. Rh7+ Rg7 41. Rxg7+ Qxg7 42. Qf5+ Kg8 43. Nxg7 Bxf5 44. Nxe8 1-0

[Event "ARG-Cup corr"]
[Site "Argentina"]
[Date "1991.??.??"]
[Round "?"]
[White "Acedo, Hector Oscar"]
[Black "Leibson, Leonardo Jose"]
[Result "1-0"]
[ECO "B17"]
[PlyCount "73"]
[EventDate "1991.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Ng3 e6 7. Bd3 Be7 8. 0-0 0-0 9. Qe2 c5 10. dxc5 Bxc5 11. Bf4 Nd5 12. Bg5 N7f6 13. Rad1 Qb6 14. c4 Nb4 15. Bxf6 Nxd3 16. Qxd3 gxf6 17. Nh5 e5 18. Nh4 Kh8 19. Nf5 Bxf5 20. Qxf5 Qe6 21. Qxf6+ Qxf6 22. Nxf6 Bd4 23. Rd2 Rac8 24. b3 Kg7 25. Ne4 Rcd8 26. Rfd1 Bb6 27. Nd6 Rb8 28. Rd5 f6 29. c5 Bc7 30. Nb5 Rf7 31. Rd7 Ba5 32. Nxa7 Rxd7 33. Rxd7+ Kg6 34. a3 Rd8 35. Rxd8 Bxd8 36. Nc8 Kf5 37. Nd6+ 1-0

[Event "ARG Sup corr"]
[Site "Argentina"]
[Date "1991.??.??"]
[Round "?"]
[White "Cibin, Aurelio Isidoro"]
[Black "Leibson, Leonardo Jose"]
[Result "1-0"]
[ECO "E12"]
[PlyCount "61"]
[EventDate "1991.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 7. Qc2 Be7 8. e4 Nxc3 9. bxc3 0-0 10. Bd3 c5 11. dxc5 Bxc5 12. Bg5 Be7 13. Bf4 Nd7 14. e5 f5 15. Rd1 Qc8 16. Nd4 Nc5 17. f3 Nxd3+ 18. Rxd3 Ba6 19. Rd1 Bxa3 20. Qb3 Be7 21. Qxe6+ Qxe6 22. Nxe6 Rfc8 23. Rd7 Bf8 24. Nc7 Rxc7 25. Rxc7 Bc5 26. Kd2 Rd8+ 27. Kc2 Bd3+ 28. Kb2 a5 29. e6 Re8 30. Rd1 Bc4 31. Rdd7 1-0

[Event "ARG corr"]
[Site "Argentina"]
[Date "1991.??.??"]
[Round "?"]
[White "Crespo, Ramon Jose"]
[Black "Leibson, Leonardo Jose"]
[Result "1-0"]
[ECO "B12"]
[PlyCount "49"]
[EventDate "1991.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nc3 e6 5. g4 Bg6 6. Nge2 Nd7 7. h4 f6 8. h5 Bf7 9. f4 fxe5 10. dxe5 Be7 11. Bg2 Bh4+ 12. Kf1 Be7 13. Be3 Nh6 14. Ng3 c5 15. g5 Ng8 16. g6 hxg6 17. hxg6 Rxh1+ 18. Bxh1 Bxg6 19. f5 Bf7 20. fxe6 Bxe6 21. Bxd5 Bxd5 22. Qxd5 Nh6 23. Bxh6 gxh6 24. Qg8+ Nf8 25. e6 1-0

[Event "ARG-Cup sf06 corr"]
[Site "Argentina"]
[Date "1991.??.??"]
[Round "?"]
[White "Gonzalez, Julio Alberto"]
[Black "Leibson, Leonardo Jose"]
[Result "1-0"]
[ECO "B10"]
[PlyCount "69"]
[EventDate "1991.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 c6 2. d3 d5 3. Nd2 e5 4. Ngf3 Nf6 5. Nxe5 Qe7 6. f4 dxe4 7. dxe4 Nbd7 8. Nxd7 Bxd7 9. e5 Nd5 10. Nf3 0-0-0 11. Bd3 Bg4 12. 0-0 Qc5+ 13. Kh1 Ne3 14. Bxe3 Qxe3 15. Qc1 Qb6 16. a4 a5 17. Nd2 Bc5 18. Nc4 Qc7 19. Qd2 Bb4 20. c3 Be7 21. Qc2 h5 22. Bf5+ Kb8 23. Ne3 f6 24. Bxg4 hxg4 25. Nxg4 fxe5 26. Nxe5 Bd6 27. Rae1 g5 28. g3 gxf4 29. gxf4 Rh7 30. Qf5 Rdh8 31. Re2 Rh5 32. Qf6 R5h6 33. Qg5 Qh7 34. Qg1 Kc7 35. Nc4 1-0

[Event "ARG Sup corr"]
[Site "Argentina"]
[Date "1991.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Linskens, Rogelio Carlos"]
[Result "1-0"]
[ECO "D35"]
[PlyCount "53"]
[EventDate "1991.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. cxd5 exd5 6. Nf3 c6 7. e3 h6 8. Bh4 Be7 9. Bd3 0-0 10. 0-0 Re8 11. Rb1 Ne4 12. Bxe7 Qxe7 13. Re1 Rb8 14. Nd2 Ndf6 15. f3 Nxd2 16. Qxd2 Qd6 17. Bc2 Rd8 18. Rbd1 Be6 19. e4 dxe4 20. fxe4 Nd7 21. e5 Qe7 22. Re3 g6 23. Rg3 Kg7 24. Qf4 Nb6 25. Rf1 Nd5 26. Nxd5 Rxd5 27. Qe4 1-0

[Event "ARG Sup corr"]
[Site "Argentina"]
[Date "1991.??.??"]
[Round "?"]
[White "Litovicius, Miguel Victor"]
[Black "Leibson, Leonardo Jose"]
[Result "1-0"]
[ECO "B17"]
[PlyCount "85"]
[EventDate "1991.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Nxf6+ Nxf6 7. Bc4 Bf5 8. 0-0 e6 9. c3 Bd6 10. Qe2 0-0 11. Bg5 h6 12. Bh4 g5 13. Bg3 Bxg3 14. fxg3 Nd5 15. Ne5 Qc7 16. g4 Bh7 17. Bxd5 exd5 18. Rf6 Rae8 19. Raf1 Re6 20. Qf3 Qe7 21. Rxf7 Rxf7 22. Nxf7 Kg7 23. Ne5 Rf6 24. Qxf6+ Qxf6 25. Rxf6 Kxf6 26. Kf2 Be4 27. Nd7+ Ke7 28. Nc5 Bb1 29. Nxb7 Bxa2 30. Ke3 Bb1 31. g3 Bg6 32. Na5 Kd6 33. Nb3 Bc2 34. Nd2 Bd1 35. h3 Bc2 36. Nf3 Bg6 37. h4 gxh4 38. gxh4 c5 39. Ne5 Be8 40. h5 cxd4+ 41. Kxd4 Ke6 42. b4 Kd6 43. g5 1-0

[Event "CADAP corr"]
[Site "Argentina"]
[Date "1991.??.??"]
[Round "?"]
[White "Pizzio, Jorge Daniel"]
[Black "Leibson, Leonardo Jose"]
[Result "1-0"]
[ECO "E12"]
[PlyCount "61"]
[EventDate "1991.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 7. Qc2 Nxc3 8. bxc3 Be7 9. e4 Nd7 10. Bf4 c5 11. Bd3 cxd4 12. cxd4 Rc8 13. Qb3 0-0 14. 0-0 Nf6 15. Qb1 Nh5 16. Bd2 g6 17. Bh6 Ng7 18. Qb2 Bf6 19. a4 Re8 20. a5 Nh5 21. axb6 Qxb6 22. Rfb1 Bd8 23. Qa3 Qc7 24. Qxa7 Ra8 25. Rxb7 Rxa7 26. Raxa7 Qc3 27. Bb5 Rf8 28. Bxf8 Kxf8 29. Rxf7+ Kg8 30. Rfd7 Qc8 31. Bc6 1-0

[Event "ARG-Cup sf06 corr"]
[Site "Argentina"]
[Date "1991.??.??"]
[Round "?"]
[White "Ramirez, Eduardo Raul"]
[Black "Leibson, Leonardo Jose"]
[Result "1-0"]
[ECO "B12"]
[PlyCount "35"]
[EventDate "1991.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Bd3 Bxd3 5. Qxd3 e6 6. Ne2 Nd7 7. Nd2 c5 8. c3 Ne7 9. Nf3 cxd4 10. cxd4 Nc6 11. 0-0 Be7 12. a3 Qa5 13. Bd2 Qb6 14. b4 f6 15. exf6 Bxf6 16. Ng5 Nxd4 17. Rae1 0-0 18. Qxh7# 1-0

[Event "CADAP corr"]
[Site "Argentina"]
[Date "1990.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Berdichesky, Ruben"]
[Result "0-1"]
[ECO "E81"]
[PlyCount "58"]
[EventDate "1990.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 Nbd7 7. Nge2 c5 8. Qd2 a6 9. Rd1 cxd4 10. Nxd4 Qc7 11. Be2 e6 12. b4 Ne5 13. Na4 Bd7 14. Nb2 d5 15. cxd5 exd5 16. Rc1 Qb8 17. exd5 Nxd5 18. Bf2 Nc6 19. Nxc6 Bxc6 20. 0-0 Qf4 21. Rc2 Qxd2 22. Rxd2 Nxb4 23. a3 Bc3 24. Rd6 Bxb2 25. axb4 Be5 26. Rdd1 Rfe8 27. Bc4 Rac8 28. Bc5 Ba4 29. Rb1 b6 0-1

[Event "CADAP corr"]
[Site "Argentina"]
[Date "1989.??.??"]
[Round "?"]
[White "Berdichesky, Ruben"]
[Black "Leibson, Leonardo Jose"]
[Result "1-0"]
[ECO "E17"]
[PlyCount "59"]
[EventDate "1989.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. Nc3 0-0 7. Qc2 Nc6 8. e4 Nb4 9. Qe2 d5 10. e5 Ne4 11. a3 Nxc3 12. bxc3 Na6 13. Nd2 c5 14. 0-0 Qd7 15. cxd5 Bxd5 16. Bxd5 Qxd5 17. Qxa6 cxd4 18. Qd3 dxc3 19. Qxc3 Rac8 20. Qb2 Rc5 21. Re1 Rfc8 22. Nf1 f6 23. Qe2 Rc2 24. Qa6 Qf3 25. Be3 R8c3 26. Nd2 Qa8 27. exf6 Bxf6 28. Rad1 Ra2 29. Nb1 Rb3 30. Qc4 1-0

[Event "corr"]
[Site "corr"]
[Date "1989.??.??"]
[Round "?"]
[White "Bourgeois, Pascal"]
[Black "Leibson, Leonardo Jose"]
[Result "1-0"]
[ECO "D53"]
[PlyCount "45"]
[EventDate "1989.??.??"]
[EventType "tourn (corr)"]
[EventRounds "9"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. e3 h6 6. Bh4 0-0 7. Nf3 c6 8. Rc1 dxc4 9. Bxc4 b5 10. Bd3 a6 11. 0-0 Bb7 12. Bxf6 Bxf6 13. Ne4 c5 14. Nxc5 Bxf3 15. Qxf3 Nd7 16. Qe4 g6 17. Nxe6 fxe6 18. Qxg6+ Bg7 19. Qh7+ Kf7 20. Bg6+ Kf6 21. Bh5 Rg8 22. Qg6+ Ke7 23. Rc6 1-0

[Event "ARG Sup sf corr"]
[Site "Argentina"]
[Date "1989.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Bianchi"]
[Result "0-1"]
[ECO "E94"]
[PlyCount "66"]
[EventDate "1989.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. d5 Nbd7 8. 0-0 Nc5 9. Qc2 a5 10. h3 Nh5 11. Bg5 f6 12. Be3 b6 13. a3 f5 14. Bg5 Qe8 15. Nb5 Qf7 16. Nd2 Nf6 17. f3 f4 18. b4 Nb7 19. Nb3 Nh5 20. Rfc1 Ng3 21. c5 a4 22. cxb6 axb3 23. Qb2 Nxe2+ 24. Qxe2 cxb6 25. Rc6 Bd7 26. Rxb6 Bxb5 27. Qxb5 Nd8 28. Bxd8 Rfxd8 29. a4 Qa7 30. a5 Rdb8 31. Rb1 Rb7 32. Rxb3 Rab8 33. Rc3 Rxb6 0-1

[Event "ARG-Cup corr"]
[Site "Argentina"]
[Date "1989.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Espindola, Carlos Alejandro"]
[Result "1/2-1/2"]
[ECO "D91"]
[PlyCount "47"]
[EventDate "1989.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Bg5 Ne4 6. cxd5 Nxc3 7. bxc3 Qxd5 8. e3 c5 9. Be2 Nc6 10. 0-0 cxd4 11. cxd4 0-0 12. h3 Be6 13. Bd3 Qa5 14. Be4 Bd5 15. Bxd5 Qxd5 16. e4 Qd7 17. d5 Ne5 18. Nxe5 Bxe5 19. Bh6 Bxa1 20. Qxa1 f6 21. Bxf8 Rxf8 22. Rc1 Rc8 23. Rxc8+ Qxc8 24. Qb2 1/2-1/2

[Event "LADAC corr"]
[Site "Argentina"]
[Date "1989.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Maltz, Alberto Leonardo"]
[Result "0-1"]
[ECO "E70"]
[PlyCount "82"]
[EventDate "1989.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 0-0 5. f3 c5 6. dxc5 b6 7. cxb6 Qxb6 8. Nh3 e6 9. Nf2 Nc6 10. Be2 h5 11. 0-0 h4 12. Kh1 Ne8 13. Ng4 d6 14. Nb5 Qd8 15. f4 f5 16. exf5 gxf5 17. Bf3 Qd7 18. Ne3 a6 19. Qa4 Bb7 20. Nc3 Qc7 21. Rd1 h3 22. gxh3 Ne7 23. Bxb7 Qxb7+ 24. Ng2 Qf3 25. Qc2 Bxc3 26. bxc3 Kf7 27. Qd3 Qc6 28. Ba3 Rg8 29. Rd2 Ng6 30. Rf1 Nh4 31. Rff2 Rd8 32. c5 Nf6 33. Qe2 Rxg2 34. Rxg2 Rg8 35. Qxe6+ Kxe6 36. Rxd6+ Qxd6 37. Re2+ Ne4 38. cxd6 Nf3 39. Bc5 Kd7 40. Ba7 Nxc3 41. Rg2 Rxg2 0-1

[Event "CADAP cand corr"]
[Site "Argentina"]
[Date "1987.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Patrici, Norberto Eugenio"]
[Result "0-1"]
[ECO "E12"]
[PlyCount "46"]
[EventDate "1987.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 7. Qc2 Nxc3 8. Qxc3 Nd7 9. Bf4 Bd6 10. Bg5 Nf6 11. e3 0-0 12. Ne5 c5 13. Bxf6 gxf6 14. Nc4 cxd4 15. Qxd4 Be7 16. Qg4+ Kh8 17. Rd1 Qe8 18. Bd3 Rg8 19. Qh3 Rg7 20. f3 Qa4 21. Kf2 Ba6 22. Be4 Bxc4 23. Rhe1 Rd8 0-1

[Event "LADAC corr"]
[Site "Argentina"]
[Date "1987.??.??"]
[Round "?"]
[White "Taiana, Domingo Osvaldo"]
[Black "Leibson, Leonardo Jose"]
[Result "1-0"]
[ECO "B12"]
[PlyCount "21"]
[EventDate "1987.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nc3 e6 5. g4 Bg6 6. Nge2 c5 7. Be3 Nc6 8. dxc5 Nxe5 9. Nf4 Bxc2 10. Qxc2 d4 11. Bb5+ 1-0

[Event "corr"]
[Site "corr"]
[Date "1984.??.??"]
[Round "?"]
[White "Pisani, Carlos Alejandro"]
[Black "Leibson, Leonardo Jose"]
[Result "1-0"]
[ECO "C88"]
[PlyCount "61"]
[EventDate "1984.11.29"]
[EventType "match (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 b5 6. Bb3 Be7 7. a4 Bb7 8. d3 0-0 9. Re1 b4 10. Bg5 d6 11. a5 Nd7 12. Be3 Na7 13. c3 c5 14. cxb4 cxb4 15. Nbd2 Nb5 16. Bc4 Bc6 17. Qb3 Rb8 18. Nf1 Nc7 19. Rec1 Bb5 20. Ng3 Bxc4 21. Qxc4 Nb5 22. Nf5 h6 23. h4 Nf6 24. d4 exd4 25. N3xd4 Nxd4 26. Nxd4 Ra8 27. Nc6 Qd7 28. e5 d5 29. Nxe7+ Qxe7 30. exf6 Qxe3 31. Qg4 1-0

[Event "ARG-ch11 corr"]
[Site "Argentina"]
[Date "1984.??.??"]
[Round "?"]
[White "Rshaid de Retes, Gabriel Fabian"]
[Black "Leibson, Leonardo Jose"]
[Result "1-0"]
[ECO "E89"]
[PlyCount "57"]
[EventDate "1984.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 e5 7. Nge2 c6 8. d5 cxd5 9. cxd5 a6 10. Qd2 Nbd7 11. g4 b5 12. Ng3 Nb6 13. h4 Ne8 14. h5 f5 15. hxg6 hxg6 16. gxf5 gxf5 17. Bg5 Qc7 18. Qh2 Nf6 19. Nh5 Nxh5 20. Qxh5 Rf7 21. Qh7+ Kf8 22. Bh6 Bxh6 23. Qxh6+ Ke8 24. Bxb5+ Kd8 25. Qh8+ Ke7 26. Qe8+ Kf6 27. Rh6+ Kg5 28. Qh8 axb5 29. Rh5+ 1-0

[Event "CADAP corr"]
[Site "Argentina"]
[Date "1983.??.??"]
[Round "?"]
[White "Kokic, Mateo I"]
[Black "Leibson, Leonardo Jose"]
[Result "1/2-1/2"]
[ECO "B85"]
[PlyCount "80"]
[EventDate "1983.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Be2 Be7 7. 0-0 0-0 8. Be3 Nc6 9. f4 a6 10. Qd2 Nxd4 11. Bxd4 b5 12. e5 dxe5 13. fxe5 Nd7 14. Qe1 Bb7 15. Bf3 Nc5 16. Qe3 Rc8 17. Bxb7 Nxb7 18. Ne4 Rxc2 19. Rad1 Qc7 20. Rf3 Rc8 21. Rff1 Qc6 22. Qf3 Rf8 23. Bc3 Qb6+ 24. Kh1 b4 25. Nf6+ Bxf6 26. exf6 g6 27. Qf4 Qc6 28. Bd2 Nd6 29. Rc1 Nf5 30. Rxc2 Qxc2 31. Bxb4 Rc8 32. Bc3 Qe2 33. Re1 Qc4 34. Re4 Qxa2 35. g4 Qd5 36. gxf5 exf5 37. Qh6 Qxe4+ 38. Kg1 Qb1+ 39. Kf2 Qc2+ 40. Kf1 Qd1+ 1/2-1/2

[Event "LADAC corr"]
[Site "Argentina"]
[Date "1983.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Areta, Nestor Raul"]
[Result "1-0"]
[ECO "A95"]
[PlyCount "61"]
[EventDate "1983.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 e6 2. c4 f5 3. g3 Nf6 4. Bg2 Be7 5. Nf3 0-0 6. 0-0 d5 7. Nc3 c6 8. Qc2 Qe8 9. Bf4 Qh5 10. Rad1 Nbd7 11. b3 Kh8 12. e3 Rg8 13. Ng5 Nf8 14. Qe2 h6 15. Qxh5 Nxh5 16. Nf7+ Kh7 17. Bd6 Bxd6 18. Nxd6 Nf6 19. f3 N8d7 20. e4 dxe4 21. fxe4 g6 22. exf5 exf5 23. d5 c5 24. Rde1 a6 25. Re7+ Rg7 26. Rfe1 Rxe7 27. Rxe7+ Kg8 28. Ne2 Nf8 29. Nxc8 Rxc8 30. Rxb7 Ra8 31. Nf4 1-0

[Event "CADAP zt7 sf corr"]
[Site "Argentina"]
[Date "1983.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Becker"]
[Result "1-0"]
[ECO "E16"]
[PlyCount "65"]
[EventDate "1983.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Bb4+ 6. Bd2 Bxd2+ 7. Qxd2 0-0 8. Nc3 d5 9. cxd5 exd5 10. 0-0 Nbd7 11. Rac1 c5 12. Nh4 Ne4 13. Qc2 f5 14. dxc5 Ndxc5 15. Nb5 Qd7 16. Nd4 Rac8 17. Qd1 f4 18. b4 Ne6 19. Nxe6 Qxe6 20. Qd4 fxg3 21. hxg3 Ba6 22. Kh2 Rxc1 23. Rxc1 Rxf2 24. Rc7 Rf7 25. Rxf7 Kxf7 26. Bh3 Qc6 27. Nf5 Nf6 28. Qe5 Ne8 29. Qe7+ Kg6 30. Nh4+ Kh6 31. Nf5+ Kh5 32. Qh4+ Kg6 33. Ne7+ 1-0

[Event "corr"]
[Site "corr"]
[Date "1982.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Borrmann, Fritz"]
[Result "1-0"]
[ECO "C40"]
[PlyCount "69"]
[EventDate "1982.??.??"]
[EventType "tourn (corr)"]
[EventCountry "GER"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 f5 3. Nxe5 Nc6 4. Nxc6 dxc6 5. Nc3 Bc5 6. Qe2 Qe7 7. exf5 Bxf5 8. d3 0-0-0 9. Qxe7 Nxe7 10. Ne4 Bb6 11. Bg5 Rhe8 12. f3 Rd5 13. Bd2 Ng6 14. 0-0-0 a5 15. Nc3 Rd6 16. g3 Ne5 17. Bg2 Bxd3 18. f4 Ng4 19. cxd3 Nf2 20. Ne4 Nxd3+ 21. Kc2 Rd4 22. Bc3 Nb4+ 23. Bxb4 Rxb4 24. Nc3 Rd4 25. Rhe1 Rxe1 26. Rxe1 Kd8 27. Be4 h6 28. Rd1 Ke7 29. Rxd4 Bxd4 30. Kd3 Bg1 31. h3 Kd6 32. Ne2 Bf2 33. Nd4 Ke7 34. a4 Kf6 35. g4 1-0

[Event "CADAP corr"]
[Site "Argentina"]
[Date "1981.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Molinari, Enio S"]
[Result "1-0"]
[ECO "E16"]
[PlyCount "75"]
[EventDate "1981.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 Qe7 5. g3 b6 6. Bg2 Bb7 7. 0-0 Bxd2 8. Nbxd2 Ne4 9. Ne5 f5 10. Qc2 d5 11. cxd5 exd5 12. Nxe4 fxe4 13. Rac1 c6 14. f3 e3 15. f4 0-0 16. Qb3 Rd8 17. Rc3 Nd7 18. Nxc6 Bxc6 19. Rxc6 Nf6 20. Rxf6 gxf6 21. Bxd5+ Kg7 22. Bxa8 Rxa8 23. Rf3 Re8 24. Qd3 Qe4 25. Qxe4 Rxe4 26. f5 Rxd4 27. Rxe3 Rd2 28. Kf2 Kf7 29. Ra3 a5 30. Rb3 Rd6 31. g4 h6 32. Ke3 Kg7 33. Rd3 Rc6 34. Rd7+ Kg8 35. b3 Kh8 36. Kd2 Kg8 37. Re7 Kh8 38. Re6 1-0

[Event "CADAP zt7 sf corr"]
[Site "Argentina"]
[Date "1980.??.??"]
[Round "?"]
[White "Bandos, Jose Marques"]
[Black "Leibson, Leonardo Jose"]
[Result "1/2-1/2"]
[ECO "E02"]
[PlyCount "58"]
[EventDate "1980.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Bd7 6. Qxc4 Bc6 7. Nf3 Nbd7 8. Qc2 Be4 9. Qd1 c5 10. 0-0 cxd4 11. Nxd4 Bxg2 12. Kxg2 Bc5 13. Nb3 Bb6 14. Nc3 0-0 15. Bg5 h6 16. Bxf6 Nxf6 17. Qxd8 Rfxd8 18. Rfd1 Kf8 19. Kf3 Ke7 20. e3 e5 21. Ke2 Rac8 22. Rxd8 Bxd8 23. Rc1 Ke6 24. Nb5 Rxc1 25. Nxc1 a6 26. Nc3 b5 27. Nd3 Be7 28. f3 Nd7 29. e4 Nb6 1/2-1/2

[Event "Betins mem corr"]
[Site "corr"]
[Date "1979.??.??"]
[Round "?"]
[White "Borrmann, Fritz"]
[Black "Leibson, Leonardo Jose"]
[Result "1-0"]
[ECO "C40"]
[PlyCount "73"]
[EventDate "1979.??.??"]
[EventType "tourn (corr)"]
[EventRounds "9"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 f5 3. Bc4 fxe4 4. Nxe5 d5 5. Qh5+ g6 6. Nxg6 hxg6 7. Qxh8 Kf7 8. Qd4 Be6 9. Bb3 Nc6 10. Qe3 Bh6 11. f4 Nf6 12. d4 Ne7 13. Nc3 Nf5 14. Qg1 Qd6 15. Ne2 Re8 16. h3 e3 17. g4 Nh4 18. Qg3 g5 19. Rf1 Bd7 20. a4 Kg7 21. f5 Qb4+ 22. Kd1 c5 23. Qd6 Bc6 24. Qxc5 Qxc5 25. dxc5 Kh7 26. Nd4 Bf8 27. Ne6 Bxc5 28. Nxg5+ Kh8 29. Ke2 d4 30. Be6 Bg2 31. Rg1 Nd5 32. Bxd5 Bxd5 33. b3 Ng2 34. Rxg2 Bxg2 35. Bb2 Bd5 36. Rd1 Kg7 37. Bxd4+ 1-0

[Event "Betins mem corr"]
[Site "corr"]
[Date "1979.??.??"]
[Round "?"]
[White "Kozlov, Vladimir F"]
[Black "Leibson, Leonardo Jose"]
[Result "1-0"]
[ECO "C40"]
[PlyCount "29"]
[EventDate "1979.??.??"]
[EventType "tourn (corr)"]
[EventRounds "9"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 f5 3. Nxe5 Qf6 4. d4 d6 5. Nc4 fxe4 6. Be2 Nc6 7. d5 Ne5 8. 0-0 h5 9. Nc3 Bf5 10. Nxe5 Qxe5 11. Bb5+ Kd8 12. Re1 Nf6 13. f3 h4 14. Bg5 Be7 15. f4 1-0

[Event "corr"]
[Site "corr"]
[Date "1979.??.??"]
[Round "?"]
[White "Kozlov, Vladimir F"]
[Black "Leibson, Leonardo Jose"]
[Result "1-0"]
[ECO "C40"]
[PlyCount "39"]
[EventDate "1979.01.03"]
[EventType "match (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 f5 3. Nxe5 Qf6 4. Nc4 fxe4 5. Nc3 Qe6 6. Ne3 c6 7. d3 Bb4 8. dxe4 Bxc3+ 9. bxc3 Nf6 10. Bc4 Qxe4 11. 0-0 Kd8 12. Bd3 Qe5 13. Nc4 Qd5 14. Ba3 b5 15. Nd6 a5 16. c4 bxc4 17. Bxc4 Qxd1 18. Raxd1 Kc7 19. Nf7 d5 20. Nxh8 1-0

[Event "corr"]
[Site "corr"]
[Date "1979.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Etchaleco, Eduardo Rodolfo"]
[Result "1-0"]
[ECO "E87"]
[PlyCount "51"]
[EventDate "1979.01.03"]
[EventType "match (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 e5 7. d5 Nh5 8. Qd2 f5 9. 0-0-0 f4 10. Bf2 Bf6 11. Nge2 Bh4 12. Bg1 Nd7 13. Kb1 Be7 14. Nc1 Nc5 15. b4 Na6 16. Nd3 c6 17. c5 Nc7 18. dxc6 bxc6 19. Nb2 dxc5 20. Qxd8 Rxd8 21. Rxd8+ Bxd8 22. Bc4+ Be6 23. Bxc5 Kf7 24. Rd1 Nf6 25. Bd6 Nd7 26. Bxc7 1-0

[Event "ARG corr"]
[Site "Argentina"]
[Date "1979.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Micheloud, Luis Alberto"]
[Result "1/2-1/2"]
[ECO "C40"]
[PlyCount "66"]
[EventDate "1979.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 f5 3. Nxe5 Nf6 4. exf5 d6 5. Nf3 Bxf5 6. d4 Be7 7. Bd3 Qd7 8. 0-0 Nc6 9. Re1 Bg4 10. c3 0-0-0 11. h3 Bh5 12. Qc2 g6 13. Ng5 Rde8 14. Bc4 d5 15. Bb5 Bd6 16. Rxe8+ Rxe8 17. Nd2 Re1+ 18. Bf1 Bd1 19. Qd3 Nh5 20. g3 Nf4 21. gxf4 Bxf4 22. Ndf3 Bxf3 23. Bxf4 Rxa1 24. Nxf3 Qxh3 25. Bg3 Ne7 26. Qe2 h6 27. Nh2 Qd7 28. b3 Nf5 29. Be5 Nh4 30. Ng4 Qf5 31. Bg3 Rxf1+ 32. Kxf1 Qb1+ 33. Qe1 Qd3+ 1/2-1/2

[Event "Betins mem corr"]
[Site "corr"]
[Date "1978.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Alberts, Leonardo"]
[Result "0-1"]
[ECO "C40"]
[PlyCount "46"]
[EventDate "1978.??.??"]
[EventType "tourn (corr)"]
[EventRounds "9"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 f5 3. Nxe5 Qf6 4. d4 d6 5. Nc4 fxe4 6. Nc3 Qg6 7. Qe2 Nf6 8. d5 Be7 9. h3 0-0 10. Bf4 Nbd7 11. 0-0-0 Nb6 12. Nxb6 axb6 13. g4 Nxg4 14. Bg5 Nf6 15. Bg2 Bf5 16. Rhe1 Qf7 17. Kb1 Ra5 18. Qc4 c6 19. Qb4 Rfa8 20. dxc6 Rxa2 21. Nxa2 Qxa2+ 22. Kc1 Nd5 23. Qd4 Bxg5+ 0-1

[Event "CADAP zt5 sf corr"]
[Site "Argentina"]
[Date "1978.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Enricci, Juan Andres"]
[Result "0-1"]
[ECO "E95"]
[PlyCount "76"]
[EventDate "1978.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. 0-0 Nbd7 8. Re1 c6 9. Bf1 a6 10. a4 Qe7 11. Bg5 h6 12. Bh4 Rd8 13. d5 c5 14. Nd2 g5 15. Bg3 b6 16. h4 Nf8 17. hxg5 hxg5 18. Nf3 N6h7 19. Nh2 Ng6 20. Be2 Nf4 21. Bg4 Nf6 22. Bxc8 Rdxc8 23. Nf1 N6h5 24. Ne3 Qf6 25. Nf5 Bh6 26. Bxf4 Nxf4 27. Qf3 Kh7 28. g3 g4 29. Qh1 Nh3+ 30. Kg2 Rh8 31. Qh2 Bg5 32. f4 exf4 33. gxf4 Bxf4 34. Qh1 Kg6 35. Rf1 Qe5 36. Rfd1 Bg5 37. Qe1 Nf4+ 38. Kg1 Rh3 0-1

[Event "LADAC corr"]
[Site "Argentina"]
[Date "1978.??.??"]
[Round "?"]
[White "Perez, Daniel"]
[Black "Leibson, Leonardo Jose"]
[Result "1-0"]
[ECO "C30"]
[PlyCount "45"]
[EventDate "1978.??.??"]
[EventType "tourn (corr)"]
[EventRounds "2"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. f4 Bc5 3. Nf3 d6 4. Nc3 Nf6 5. Bc4 Bg4 6. d3 Nc6 7. h3 Bxf3 8. Qxf3 Nd4 9. Qg3 Nxc2+ 10. Kd1 Nxa1 11. Qxg7 Rf8 12. fxe5 dxe5 13. Bg5 Be7 14. Rf1 Nh5 15. Bxf7+ Kd7 16. Qxe5 Kc8 17. Be6+ Kb8 18. Rxf8 Qxf8 19. Bxe7 Qf1+ 20. Kd2 Qxg2+ 21. Ne2 Ng7 22. Bd6 Ne8 23. Bxc7+ 1-0

[Event "corr"]
[Site "corr"]
[Date "1977.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Bauza Mercere, Eduardo"]
[Result "1-0"]
[ECO "A53"]
[PlyCount "53"]
[EventDate "1977.??.??"]
[EventType "tourn (corr)"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d6 3. Nc3 Nbd7 4. e4 e5 5. Nge2 Be7 6. g3 0-0 7. Bg2 Re8 8. 0-0 Bf8 9. h3 c6 10. d5 cxd5 11. cxd5 a6 12. Be3 b5 13. a3 Bb7 14. Rc1 Rc8 15. f3 g6 16. Na2 Nh5 17. Qd2 Qe7 18. g4 Ng7 19. Nb4 Rxc1 20. Rxc1 Rc8 21. Rxc8 Bxc8 22. Nc6 Qe8 23. Nc1 Bb7 24. Qc3 f5 25. Nd3 Kf7 26. Bg5 Nf6 27. Ncxe5+ 1-0

[Event "CADAP zt5 sf corr"]
[Site "Argentina"]
[Date "1976.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Grassi, Aldo"]
[Result "1/2-1/2"]
[ECO "A67"]
[PlyCount "74"]
[EventDate "1976.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. f4 Bg7 8. Bb5+ Nfd7 9. Nf3 0-0 10. Bd3 Nf6 11. 0-0 a6 12. a4 Bg4 13. h3 Bxf3 14. Qxf3 Nbd7 15. Bd2 Re8 16. a5 b5 17. axb6 c4 18. b7 Qb6+ 19. Qe3 Rab8 20. Qxb6 Nxb6 21. Bc2 Rxb7 22. Rxa6 Nbd7 23. Rxd6 Rxb2 24. Rc1 Nc5 25. e5 Nb3 26. Bxb3 cxb3 27. exf6 Bf8 28. Rd7 Rxd2 29. Rb1 b2 30. Na4 Ree2 31. Rd8 Rxg2+ 32. Kh1 Rh2+ 33. Kg1 Rdg2+ 34. Kf1 Rc2 35. Kg1 Rhd2 36. Nxb2 Rxb2 37. Ra1 Rg2+ 1/2-1/2

[Event "CADAP zt5 sf corr"]
[Site "Argentina"]
[Date "1976.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Luna, Julio Argentino"]
[Result "0-1"]
[ECO "E92"]
[PlyCount "42"]
[EventDate "1976.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 0-0 6. Nf3 e5 7. dxe5 dxe5 8. Qxd8 Rxd8 9. Bg5 Re8 10. 0-0-0 Nc6 11. Nd5 Nxd5 12. exd5 Nd4 13. Nxd4 exd4 14. Rhe1 Bf5 15. Bf4 Re4 16. g3 d3 17. Bf1 Rxc4+ 18. Kd2 Rc2+ 19. Ke3 Re8+ 20. Kf3 Rxe1 21. Rxe1 Bd4 0-1

[Event "CADAP zt5 sf corr"]
[Site "Argentina"]
[Date "1976.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Taffijn, MW."]
[Result "1-0"]
[ECO "D29"]
[PlyCount "38"]
[EventDate "1976.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. 0-0 a6 7. Qe2 b5 8. Bb3 Bb7 9. Nc3 Nbd7 10. Rd1 c4 11. Bc2 b4 12. Nb1 Rc8 13. Ne5 Qc7 14. Ba4 Bd6 15. Nd2 0-0 16. Ndxc4 Nb6 17. Nxb6 Qxb6 18. Nc4 Qc7 19. Nxd6 Qxd6 1-0

[Event "CADAP zt5 sf corr"]
[Site "Argentina"]
[Date "1976.??.??"]
[Round "?"]
[White "Veronesse, Victorio"]
[Black "Leibson, Leonardo Jose"]
[Result "1-0"]
[ECO "A48"]
[PlyCount "101"]
[EventDate "1976.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "ARG"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. Nf3 Nf6 2. d4 g6 3. Bf4 d6 4. e3 c5 5. c3 Nbd7 6. Be2 Bg7 7. Nbd2 b6 8. e4 Bb7 9. d5 Rc8 10. h3 0-0 11. 0-0 Re8 12. a4 a6 13. Qc2 Nf8 14. Rfd1 Qd7 15. Nc4 Qd8 16. Nfd2 Rb8 17. Bh2 b5 18. axb5 axb5 19. Ne3 Ba8 20. Ra6 N6d7 21. f4 c4 22. Nf3 Nc5 23. Ra2 Qb6 24. Kh1 Nfd7 25. e5 dxe5 26. fxe5 Nd3 27. Bxd3 Qxe3 28. Be4 e6 29. Rxa8 Rxa8 30. dxe6 Nf8 31. exf7+ Kxf7 32. Bxa8 Rxa8 33. Re1 Qd3 34. Qf2 Kg8 35. Qb6 Qd5 36. Nd4 Ra2 37. Qxb5 Qxb5 38. Nxb5 Ne6 39. Rb1 Bf8 40. Nd4 Nc5 41. e6 Nd3 42. Nc6 Bc5 43. Bg1 Bd6 44. e7 Ra8 45. Bh2 Bc5 46. Bb8 Nf2+ 47. Kh2 Kf7 48. Rf1 Ra6 49. Ne5+ Kxe7 50. Nxc4 Rf6 51. Re1+ 1-0

[Event "corr"]
[Site "corr"]
[Date "1970.??.??"]
[Round "?"]
[White "Leibson, Leonardo Jose"]
[Black "Kozlov, Vladimir F"]
[Result "1/2-1/2"]
[ECO "C40"]
[PlyCount "58"]
[EventDate "1970.??.??"]
[EventType "tourn (corr)"]
[EventRounds "9"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 f5 3. Nxe5 Qf6 4. Nc4 fxe4 5. Nc3 Qf7 6. Ne3 c6 7. Nxe4 d5 8. Ng5 Qf6 9. Nf3 Bd6 10. d4 Ne7 11. g3 Be6 12. Bg2 Nd7 13. Qd3 0-0-0 14. Bd2 Nf5 15. Ng4 Qg6 16. Nge5 Bxe5 17. Nxe5 Nxe5 18. dxe5 Nh4 19. Bf1 Qxd3 20. Bxd3 Nf3+ 21. Ke2 Nxe5 22. Bf4 Bg4+ 23. Kd2 Nxd3 24. Kxd3 Rhe8 25. Rhe1 Bf5+ 26. Kd2 c5 27. Bg5 Rxe1 28. Rxe1 Rd7 29. c3 Kc7 1/2-1/2

