[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.23"]
[Round "1"]
[White "Fischer, Robert James"]
[Black "Emma, Jaime"]
[Result "1/2-1/2"]
[ECO "B00"]
[EventDate "1959.03.23"]
[PlyCount "92"]

1. e4 Nc6 2. Nf3 d6 3. d4 Bg4 4. d5 Nb8 5. c4 e5 6. dxe6 fxe6 7. Nc3 Nc6 8. Be2 Nf6 9. h3 Bh5 10. Be3 Be7 11. O-O Qd7 12. Nd4 Bg6 13. Nxc6 bxc6 14. e5 dxe5 15. Qa4 O-O 16. Rad1 Qe8 17. Qa5 Bd6 18. c5 Be7 19. Qxc7 Nd5 20. Nxd5 exd5 21. Qxe5 Bxc5 22. Qc3 Bxe3 23. Qxe3 Qxe3 24. fxe3 Rae8 25. Rxf8+ Kxf8 26. Kf2 Ke7 27. b4 Rb8 28. a3 Rf8+ 29. Bf3 a5 30. bxa5 Ra8 31. e4 Rxa5 32. exd5 cxd5 33. Ra1 Bc2 34. Ke3 Kd6 35. Kd4 Bb3 36. Be2 Ra7 37. Kc3 Ba4 38. Kb4 d4 39. g3 Bc6 40. a4 Be4 41. Bb5 Rb7 42. Kc4 Ke5 43. a5 Rc7+ 44. Kb4 d3 45. a6 Kd4 46. a7 Rc8 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.23"]
[Round "1"]
[White "Najdorf, Miguel"]
[Black "Souza Mendes, Joao"]
[Result "1-0"]
[ECO "D26"]
[EventDate "1959.03.23"]
[PlyCount "61"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 c5 5. cxd5 Nxd5 6. e3 Nc6 7. Bc4 Nf6 8. O-O a6 9. Qe2 cxd4 10. Rd1 Be7 11. exd4 Nb4 12. a3 Nbd5 13. Ne5 O-O 14. Rd3 Bd7 15. Rh3 Bc6 16. Bg5 g6 17. Bh6 Re8 18. Re1 Nxc3 19. bxc3 Bd5 20. Bxd5 Qxd5 21. Rf3 b5 22. h4 Bd8 23. Bg5 Kg7 24. h5 h6 25. hxg6 hxg5 26. gxf7 Rh8 27. Qd3 Rh6 28. Rh3 Rxh3 29. Qg6+ Kf8 30. gxh3 Nd7 31. Nxd7+ 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.23"]
[Round "1"]
[White "Pilnik, Herman"]
[Black "Sanchez, Luis Augusto"]
[Result "1/2-1/2"]
[ECO "C84"]
[EventDate "1959.03.23"]
[PlyCount "88"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. d3 d6 7. c3 O-O 8. Re1 Bd7 9. Nbd2 Ne8 10. Nf1 Bf6 11. Bb3 Na5 12. Bc2 c5 13. Ne3 Nc7 14. d4 cxd4 15. cxd4 Nb5 16. dxe5 dxe5 17. a4 Nc7 18. Nd5 Bg4 19. h3 Bxf3 20. Qxf3 Nc6 21. Be3 Nxd5 22. exd5 Nd4 23. Bxd4 exd4 24. Re2 Qd6 25. Rae1 Rad8 26. Qd3 g6 27. Bb3 Kg7 28. g3 Qd7 29. Kg2 Rfe8 30. Qf3 Rxe2 31. Rxe2 b5 32. axb5 Qxb5 33. Rd2 a5 34. h4 a4 35. Ba2 h5 36. Rc2 d3 37. Rd2 Bxb2 38. d6 Rd7 39. Rxd3 Bf6 40. Qe4 Qb6 41. Qc4 a3 42. Qd5 Qb7 43. Qxb7 Rxb7 44. Rxa3 Be5 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.23"]
[Round "1"]
[White "Rossetto, Hector Decio"]
[Black "Ivkov, Borislav"]
[Result "1/2-1/2"]
[ECO "E04"]
[EventDate "1959.03.23"]
[PlyCount "63"]

1. d4 e6 2. Nf3 c5 3. g3 Nf6 4. Bg2 Nc6 5. O-O d5 6. c4 dxc4 7. Qa4 Bd7 8. Qxc4 b5 9. Qd3 Rc8 10. dxc5 Bxc5 11. Nc3 a6 12. Bg5 Nb4 13. Qd1 Bc6 14. a3 Nbd5 15. Ne5 Ba8 16. Nxd5 Bxd5 17. Bxf6 Qxf6 18. Bxd5 Qxe5 19. Bb7 Rb8 20. Bc6+ Ke7 21. b4 Rhd8 22. Qb1 Bb6 23. Ra2 h5 24. e3 h4 25. Qe4 Qxe4 26. Bxe4 f5 27. Bf3 g5 28. g4 h3 29. Rc1 Rd3 30. Kf1 f4 31. Be4 Rd6 32. Ke2 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.23"]
[Round "1"]
[White "Sanguineti, Raul"]
[Black "Pachman, Ludek"]
[Result "0-1"]
[ECO "E21"]
[EventDate "1959.03.23"]
[PlyCount "142"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. g3 Bxc3+ 6. bxc3 Bb7 7. Bh3 O-O 8. O-O d6 9. Bg5 h6 10. Bxf6 Qxf6 11. Qd3 e5 12. e4 Nc6 13. d5 Na5 14. Nd2 Bc8 15. Bxc8 Raxc8 16. f4 c6 17. fxe5 Qxe5 18. Nf3 Qe7 19. Nd4 cxd5 20. cxd5 Qc7 21. Rf2 Nc4 22. Nc6 Ne5 23. Nxe5 dxe5 24. Rf3 Qc4 25. Qxc4 Rxc4 26. Re1 Rfc8 27. Ree3 f6 28. Kf1 b5 29. Ke1 Ra4 30. Rf2 Rcc4 31. Rfe2 Ra3 32. Rc2 b4 33. Kd2 bxc3+ 34. Rexc3 Raxc3 35. Rxc3 Rxe4 36. Ra3 Rd4+ 37. Ke3 Rxd5 38. Rxa7 Rb5 39. a4 Rb2 40. h4 Rb3+ 41. Kf2 h5 42. a5 Ra3 43. a6 Kh7 44. Ra8 Kg6 45. Ra7 Kf5 46. Rxg7 Rxa6 47. Rh7 Ra2+ 48. Ke3 Ra3+ 49. Kf2 e4 50. Rg7 Rf3+ 51. Kg2 Rd3 52. Kf2 Ke5 53. Re7+ Kd4 54. Rd7+ Kc3 55. Ra7 Kd4 56. Rd7+ Ke5 57. Re7+ Kf5 58. Rg7 Rf3+ 59. Kg2 Rc3 60. Kf2 Ke5 61. Re7+ Kd4 62. Rd7+ Kc4 63. Rc7+ Kd3 64. Rd7+ Kc2 65. Rh7 Kd2 66. Re7 e3+ 67. Kf3 Rd3 68. Re8 Rd5 69. Ra8 Rf5+ 70. Kg2 Rf2+ 71. Kg1 Rf1+ 0-1

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.23"]
[Round "1"]
[White "Shocron, Ruben"]
[Black "Letelier Martner, Rene"]
[Result "1/2-1/2"]
[ECO "E43"]
[EventDate "1959.03.23"]
[PlyCount "126"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. e3 O-O 6. Bd3 b6 7. O-O Bb7 8. Bd2 cxd4 9. exd4 d5 10. cxd5 Nxd5 11. Qe2 Nd7 12. Rad1 Qe7 13. Rfe1 Rfe8 14. Bb5 Nxc3 15. bxc3 Bd6 16. a4 a6 17. Bd3 e5 18. Bf5 e4 19. Ng5 Nf6 20. f3 Qc7 21. Nxe4 Bxh2+ 22. Kh1 Nxe4 23. fxe4 g6 24. Qg4 Qg3 25. d5 h5 26. Qg5 Qxg5 27. Bxg5 Be5 28. Bd7 Bxc3 29. Re3 Be5 30. Bxe8 Rxe8 31. Rb3 b5 32. axb5 axb5 33. Rxb5 Ba6 34. Rb6 Be2 35. Re1 Bd3 36. Rd1 Be2 37. Rd2 Ra8 38. Rb1 Bg4 39. d6 f6 40. Be3 Rd8 41. Rb6 Kf7 42. Rb7+ Rd7 43. Rxd7+ Bxd7 44. Bc5 Ke6 45. Kg1 g5 46. Kf2 Bc6 47. Bb4 Kd7 48. Rc2 Bd4+ 49. Ke2 Bb6 50. Kd3 Bb5+ 51. Kd2 Bc6 52. Kd3 Bb5+ 53. Kd2 Bf1 54. g3 Bg2 55. Kd3 Bf1+ 56. Kd2 Bg2 57. Rc4 Bf1 58. Rc1 Bg2 59. Kd3 Bf3 60. Rf1 g4 61. Re1 h4 62. e5 fxe5 63. gxh4 g3 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.23"]
[Round "1"]
[White "Wexler, Bernardo"]
[Black "Bolbochan, Jacobo"]
[Result "1/2-1/2"]
[ECO "E94"]
[EventDate "1959.03.23"]
[PlyCount "50"]

1. c4 Nf6 2. Nc3 g6 3. d4 Bg7 4. e4 O-O 5. Be2 d6 6. Nf3 e5 7. O-O c6 8. dxe5 dxe5 9. Qxd8 Rxd8 10. Nxe5 Nxe4 11. Nxe4 Bxe5 12. Bg5 Re8 13. Bf6 Nd7 14. Bxe5 Rxe5 15. Bf3 Nc5 16. Nxc5 Rxc5 17. b3 a5 18. Rfd1 Be6 19. Kf1 Kf8 20. Ke2 Ke7 21. h4 h5 22. Kd2 Rd8+ 23. Kc3 Rd6 24. Rxd6 Kxd6 25. Rd1+ Ke7 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.24"]
[Round "2"]
[White "Emma, Jaime"]
[Black "Rossetto, Hector Decio"]
[Result "0-1"]
[ECO "C56"]
[EventDate "1959.03.23"]
[PlyCount "56"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 exd4 5. O-O Nxe4 6. Re1 d5 7. Nc3 dxc4 8. Rxe4+ Be6 9. Nxd4 Nxd4 10. Rxd4 Qf6 11. Nd5 Bxd5 12. Rxd5 Bd6 13. Bg5 Qe6 14. Qd2 O-O 15. Re1 Qg6 16. Kf1 Rfe8 17. Be3 h6 18. h3 Re4 19. f3 Re6 20. Rd4 Rae8 21. Bf2 Rxe1+ 22. Bxe1 b5 23. Bf2 a6 24. Rg4 Qf6 25. Bd4 Be5 26. Re4 Re6 27. Rxe5 Rxe5 28. f4 Rd5 0-1

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.24"]
[Round "2"]
[White "Ivkov, Borislav"]
[Black "Wexler, Bernardo"]
[Result "1-0"]
[ECO "E59"]
[EventDate "1959.03.23"]
[PlyCount "79"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Nf3 O-O 6. Bd3 d5 7. O-O Nc6 8. a3 Bxc3 9. bxc3 dxc4 10. Bxc4 Qc7 11. Bb5 a6 12. Bd3 e5 13. Qc2 Re8 14. e4 c4 15. Bxc4 exd4 16. cxd4 Na5 17. Ne5 Be6 18. Bd3 Qd8 19. Be3 Nb3 20. Rad1 Nxd4 21. Qc3 Nb3 22. Nc4 Rc8 23. e5 Qc7 24. Qxb3 b5 25. exf6 bxc4 26. Bxh7+ Kxh7 27. Qc3 gxf6 28. Qxf6 Qe7 29. Qh6+ Kg8 30. Bd4 f6 31. Bxf6 Qh7 32. Qg5+ Kf7 33. Rb1 Rc7 34. Be5 Rd7 35. Qf6+ Kg8 36. Rb8 Rde7 37. Rfb1 Bd5 38. R1b6 a5 39. Qg5+ Kf8 40. Bd6 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.24"]
[Round "2"]
[White "Letelier Martner, Rene"]
[Black "Najdorf, Miguel"]
[Result "1/2-1/2"]
[ECO "E70"]
[EventDate "1959.03.23"]
[PlyCount "81"]

1. c4 Nf6 2. Nc3 g6 3. d4 Bg7 4. e4 d6 5. Bd3 O-O 6. Nge2 e5 7. d5 Nh5 8. O-O Qh4 9. Bc2 f5 10. exf5 Bxf5 11. Bxf5 gxf5 12. f4 a6 13. c5 Nd7 14. c6 Ndf6 15. cxb7 Rab8 16. Qd3 Ne4 17. Be3 Rxb7 18. Rab1 a5 19. Nxe4 fxe4 20. Qxe4 Rb4 21. Qd3 exf4 22. Bd2 Rbb8 23. Rf3 a4 24. Bc3 Bxc3 25. Qxc3 Qg5 26. Qd2 Qe5 27. Nc3 Rb4 28. Re1 Qd4+ 29. Qxd4 Rxd4 30. Nb5 Rxd5 31. Nxc7 Re5 32. Rd1 Rb8 33. Rf2 f3 34. gxf3 Nf4 35. Kh1 Rb7 36. Rc2 Rc5 37. Rxc5 dxc5 38. Nd5 Nxd5 39. Rxd5 Rxb2 40. Rxc5 Rxa2 41. Rc7 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.24"]
[Round "2"]
[White "Pachman, Ludek"]
[Black "Pilnik, Herman"]
[Result "1-0"]
[ECO "E81"]
[EventDate "1959.03.23"]
[PlyCount "59"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 e5 6. Nge2 O-O 7. Bg5 c6 8. Qd2 Re8 9. d5 Qc7 10. O-O-O c5 11. g4 a6 12. Ng3 Nbd7 13. h4 Nf8 14. Bd3 Bd7 15. h5 Reb8 16. Nf5 gxf5 17. gxf5 Be8 18. Rdg1 Ng6 19. f4 b5 20. hxg6 fxg6 21. fxg6 hxg6 22. f5 bxc4 23. Bf1 Ra7 24. fxg6 Rab7 25. Bxf6 Bxf6 26. Bh3 Bd7 27. Qf2 Rf8 28. g7 Bg5+ 29. Rxg5 Rxf2 30. Be6+ 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.24"]
[Round "2"]
[White "Redolfi, Rodolfo Argentino"]
[Black "Shocron, Ruben"]
[Result "0-1"]
[ECO "B26"]
[EventDate "1959.03.23"]
[PlyCount "66"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 e6 6. Be3 d6 7. Qc1 Nd4 8. Nce2 Ne7 9. c3 Nxe2 10. Nxe2 O-O 11. O-O Bd7 12. d4 Qc7 13. Qd2 Rfd8 14. h4 Rac8 15. h5 Bb5 16. Rfe1 Qa5 17. hxg6 hxg6 18. Bg5 Re8 19. dxc5 dxc5 20. Qf4 Qa6 21. Bf3 Nc6 22. Nc1 f6 23. Bh6 g5 24. Bxg5 fxg5 25. Qxg5 Ne5 26. Bh5 Rf8 27. f4 Nf7 28. Qh4 e5 29. Bg4 Rc6 30. f5 Rh6 31. Qe7 Qb6 32. a4 Re8 33. a5 Qc6 0-1

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.24"]
[Round "2"]
[White "Sanchez, Luis Augusto"]
[Black "Fischer, Robert James"]
[Result "1/2-1/2"]
[ECO "E93"]
[EventDate "1959.03.23"]
[PlyCount "81"]

1. Nf3 Nf6 2. d4 g6 3. c4 Bg7 4. Nc3 O-O 5. e4 d6 6. Be2 e5 7. d5 Nbd7 8. Bg5 h6 9. Bh4 a6 10. O-O Qe8 11. Ne1 Nh7 12. f3 f5 13. Nd3 f4 14. b4 g5 15. Bf2 h5 16. c5 Qg6 17. Rc1 Ndf6 18. Kh1 g4 19. Bh4 Bh6 20. cxd6 cxd6 21. Na4 Bg5 22. Qe1 Rb8 23. Nb6 Nd7 24. Nc4 Rf6 25. Rc2 b5 26. Na5 Nb6 27. Bf2 Bd7 28. Rc7 Rf7 29. Nb2 Rg7 30. Nc6 Bxc6 31. Rxg7+ Qxg7 32. dxc6 Nf6 33. Qc3 Qc7 34. Rc1 h4 35. Qb3+ Kg7 36. Qe6 g3 37. Bg1 gxh2 38. Kxh2 Nc8 39. Bd1 Ne7 40. Bb3 Ng6 41. Nd3 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.24"]
[Round "2"]
[White "Souza Mendes, Joao"]
[Black "Sanguineti, Raul"]
[Result "1/2-1/2"]
[ECO "D93"]
[EventDate "1959.03.23"]
[PlyCount "86"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Bf4 Bg7 5. e3 c6 6. Nf3 O-O 7. Qb3 dxc4 8. Bxc4 b5 9. Be2 Be6 10. Qc2 Na6 11. a3 Qb6 12. b4 Rfc8 13. O-O Nc7 14. e4 a5 15. h3 axb4 16. axb4 Na6 17. Rab1 Ne8 18. Be3 Qb7 19. Ng5 Bc4 20. Bxc4 bxc4 21. b5 cxb5 22. Rxb5 Qd7 23. Qd2 Nd6 24. Rb6 Rcb8 25. Rfb1 Nc8 26. Rxb8 Rxb8 27. Rxb8 Nxb8 28. Nf3 Nd6 29. Qa2 Qc6 30. Nd2 f6 31. Qa7 Nd7 32. Qa5 Kf7 33. Kf1 e5 34. d5 Qc8 35. Qa4 Bf8 36. Ke2 Ke8 37. Kd1 Be7 38. Kc2 Bd8 39. Qb4 Qa6 40. Qa4 Qxa4+ 41. Nxa4 Ba5 42. Nc3 f5 43. f3 Bb4 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.25"]
[Round "3"]
[White "Bolbochan, Jacobo"]
[Black "Ivkov, Borislav"]
[Result "1/2-1/2"]
[ECO "C04"]
[EventDate "1959.03.23"]
[PlyCount "97"]

1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. Ngf3 Nf6 5. e5 Nd7 6. Nb3 f6 7. Bf4 Be7 8. h4 O-O 9. g3 Nb6 10. Bd3 f5 11. c3 Qe8 12. Kf1 Nd8 13. Nc1 Bd7 14. Ne2 Rc8 15. Bg5 Na4 16. Qd2 c5 17. Kg2 c4 18. Bb1 b5 19. b4 Nc6 20. Bc2 Nb6 21. h5 a5 22. a3 Ra8 23. h6 g6 24. Bxe7 Qxe7 25. Qg5 Qxg5 26. Nxg5 Nd8 27. Nf4 Re8 28. Kf3 Nf7 29. Nxf7 Kxf7 30. Nh3 Ra7 31. Ng5+ Kg8 32. Rhc1 Rea8 33. Rab1 axb4 34. axb4 Ra2 35. Bd1 R8a3 36. Ke3 Bc8 37. Nf3 Nd7 38. Ng5 Nb8 39. Nf3 Nc6 40. Ng5 Nd8 41. g4 fxg4 42. Bxg4 Bd7 43. Bh3 Ra6 44. Bg4 Nf7 45. Nxf7 Kxf7 46. Kf4 Ke7 47. Kg5 Ra8 48. Rf1 R8a3 49. Rbc1 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.25"]
[Round "3"]
[White "Fischer, Robert James"]
[Black "Pachman, Ludek"]
[Result "0-1"]
[ECO "C75"]
[EventDate "1959.03.23"]
[PlyCount "112"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Bd7 6. d4 Nge7 7. Bb3 h6 8. O-O Ng6 9. Nbd2 Be7 10. Nc4 Bg5 11. Ne3 Bxe3 12. Bxe3 O-O 13. h3 Re8 14. Nh2 Qe7 15. dxe5 dxe5 16. Qh5 Na5 17. Bc2 Nc4 18. Bc1 Nf4 19. Qf3 Rad8 20. Bxf4 exf4 21. Qxf4 Bc6 22. Ng4 h5 23. Ne3 Nxb2 24. Nf5 Qf6 25. Qxc7 Qxc3 26. Rac1 Qf6 27. Rfe1 Nd3 28. Bxd3 Rxd3 29. Qf4 g6 30. Rc5 Re6 31. Qb8+ Rd8 32. Qf4 gxf5 33. Rxf5 Qg7 34. Rxh5 Rde8 35. f3 Re5 36. Rh4 Rg5 37. Rg4 Rxg4 38. hxg4 Qd4+ 39. Re3 Qe5 40. Qf5 Qxf5 41. gxf5 Rd8 42. Kf2 Bb5 43. Ke1 Kg7 44. e5 Rd4 45. g4 Kh6 46. e6 f6 47. Kf2 Rd2+ 48. Kg3 Kg7 49. Rc3 Bc6 50. a3 Re2 51. Kf4 a5 52. Rd3 a4 53. Rd8 Rf2 54. Rd3 b5 55. Rc3 Rxf3+ 56. Rxf3 Bxf3 0-1

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.25"]
[Round "3"]
[White "Najdorf, Miguel"]
[Black "Redolfi, Rodolfo Argentino"]
[Result "1/2-1/2"]
[ECO "E59"]
[EventDate "1959.03.23"]
[PlyCount "134"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. e3 O-O 6. Bd3 d5 7. O-O Nc6 8. a3 Bxc3 9. bxc3 dxc4 10. Bxc4 Qc7 11. Ba2 e5 12. h3 e4 13. Nh2 Be6 14. d5 Rad8 15. c4 Ne5 16. Bb2 Qb8 17. f4 exf3 18. Nxf3 Nxf3+ 19. Qxf3 Bc8 20. e4 Nd7 21. e5 Nxe5 22. Qg3 Rde8 23. Rae1 f6 24. Bb1 Bd7 25. Bxe5 Rxe5 26. Rxe5 fxe5 27. Rxf8+ Kxf8 28. Bxh7 Qd6 29. Qf2+ Ke7 30. Bg8 Kd8 31. h4 a6 32. h5 Kc7 33. Bh7 b5 34. Bd3 bxc4 35. Bxc4 Bb5 36. Qf7+ Qd7 37. Qf8 Kb6 38. Bxb5 Qxb5 39. Qb8+ Ka5 40. Qxe5 c4 41. Qc7+ Ka4 42. d6 Qb1+ 43. Kh2 Qe4 44. Qe7 Qf4+ 45. Kh3 Qf5+ 46. Kg3 g5 47. hxg6 Qxg6+ 48. Kf4 Qh6+ 49. Kf3 Qh5+ 50. g4 Qh1+ 51. Kg3 Qg1+ 52. Kh4 Qf2+ 53. Kh5 Qc5+ 54. g5 c3 55. Qc7 Qd4 56. d7 Qh8+ 57. Kg6 Qg8+ 58. Kf6 Qh8+ 59. Ke6 Qh3+ 60. Kf6 Qh8+ 61. Kg6 Qg8+ 62. Kf5 Qd5+ 63. Kf6 Qd4+ 64. Qe5 Qxd7 65. Qxc3 Qd8+ 66. Kf5 a5 67. g6 Qd3+ 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.25"]
[Round "3"]
[White "Pilnik, Herman"]
[Black "Souza Mendes, Joao"]
[Result "1-0"]
[ECO "C90"]
[EventDate "1959.03.23"]
[PlyCount "65"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. d3 b5 7. Bb3 d6 8. a4 Bg4 9. c3 Na5 10. Bc2 c5 11. Re1 O-O 12. Nbd2 Nc6 13. Nf1 Qc7 14. h3 Bd7 15. Ne3 g6 16. Nd5 Nxd5 17. exd5 Na5 18. axb5 axb5 19. Bh6 Rfe8 20. b4 Nb7 21. Qd2 Bf6 22. Ng5 Bh8 23. bxc5 Nxc5 24. Rxa8 Rxa8 25. d4 Na4 26. dxe5 Bxe5 27. Rxe5 dxe5 28. d6 Qc4 29. Ne4 Nb6 30. Qg5 Qe6 31. Bb3 Qf5 32. Qe7 Be6 33. Ng3 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.25"]
[Round "3"]
[White "Rossetto, Hector Decio"]
[Black "Sanchez, Luis Augusto"]
[Result "1/2-1/2"]
[ECO "E81"]
[EventDate "1959.03.23"]
[PlyCount "112"]

1. c4 Nf6 2. Nc3 g6 3. d4 Bg7 4. e4 d6 5. f3 Nbd7 6. Be3 c5 7. Qd2 O-O 8. Nge2 Qa5 9. d5 Ne5 10. Ng3 Qb4 11. a3 Qb3 12. Qd1 Qxd1+ 13. Rxd1 h5 14. Bg5 a6 15. Be2 Re8 16. h3 Rb8 17. O-O Ned7 18. Rfe1 b6 19. Bf1 Nf8 20. e5 N6h7 21. Bf4 g5 22. Nxh5 gxf4 23. exd6 Ng6 24. Bd3 Bd4+ 25. Kf1 f5 26. dxe7 Rxe7 27. Rxe7 Nxe7 28. Nxf4 Nf6 29. Re1 Kf7 30. g4 Bd7 31. Ne6 Rg8 32. Nxd4 cxd4 33. Ne2 Rh8 34. Kg2 Ng6 35. Kg3 Ne5 36. Rd1 Nxf3 37. Kxf3 Rxh3+ 38. Kg2 fxg4 39. Nxd4 Nh5 40. Rf1+ Ke7 41. Bg6 Rg3+ 42. Kf2 Rh3 43. Kg2 Rg3+ 44. Kf2 Rh3 45. Ke1 Kd6 46. Rf7 Rh1+ 47. Ke2 g3 48. Bxh5 Rxh5 49. Rg7 Rh2+ 50. Kd3 Rxb2 51. Rxg3 Ra2 52. Rg6+ Ke5 53. Rxb6 Rxa3+ 54. Rb3 Rxb3+ 55. Nxb3 Bf5+ 56. Kc3 Be4 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.25"]
[Round "3"]
[White "Sanguineti, Raul"]
[Black "Letelier Martner, Rene"]
[Result "1-0"]
[ECO "C90"]
[EventDate "1959.03.23"]
[PlyCount "97"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 Na5 9. Bc2 c5 10. d4 Qc7 11. Nbd2 O-O 12. Nf1 Kh8 13. Ne3 cxd4 14. cxd4 Nc6 15. b3 Nb4 16. Bb1 Ng4 17. Nf5 Bxf5 18. exf5 Rac8 19. Bd2 Nc6 20. Be4 Nf6 21. Bxc6 Qxc6 22. dxe5 dxe5 23. Nxe5 Qc2 24. Qxc2 Rxc2 25. Be3 Ba3 26. Nf3 Nd5 27. Nd4 Rc5 28. Re2 Rfc8 29. g3 Bb4 30. a3 Bc3 31. Rd1 Nxe3 32. fxe3 Bxd4 33. exd4 Rd5 34. Re5 Rcd8 35. Rxd5 Rxd5 36. g4 h5 37. h3 hxg4 38. hxg4 Kh7 39. Kf2 Kh6 40. Kf3 Kg5 41. Ke4 Rd8 42. d5 Re8+ 43. Kf3 a5 44. d6 a4 45. bxa4 bxa4 46. d7 Rd8 47. Rd6 f6 48. Rd1 g6 49. Ke4 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.25"]
[Round "3"]
[White "Wexler, Bernardo"]
[Black "Emma, Jaime"]
[Result "1/2-1/2"]
[ECO "C00"]
[EventDate "1959.03.23"]
[PlyCount "77"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 e6 4. O-O Be7 5. d3 O-O 6. Nbd2 c5 7. e4 Nc6 8. c3 Rb8 9. a4 a6 10. Re1 b5 11. axb5 axb5 12. e5 Nd7 13. d4 b4 14. Nf1 Qb6 15. Bf4 Ba6 16. Ne3 bxc3 17. bxc3 cxd4 18. cxd4 Rfc8 19. Bf1 Bxf1 20. Rxf1 Qb3 21. Qxb3 Rxb3 22. Rfc1 h6 23. h4 Kf8 24. Ra6 Ndb8 25. Ra8 Ke8 26. Kg2 Kd7 27. Nd1 Rc7 28. Be3 Ra7 29. Rxa7+ Nxa7 30. Nc3 Nbc6 31. Ne2 Nb5 32. Ra1 Na3 33. Bc1 Nc4 34. Nd2 Nxd2 35. Bxd2 Rb2 36. Rd1 Bd8 37. Nf4 Bb6 38. Bc3 Rc2 39. Rd3 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.26"]
[Round "4"]
[White "Emma, Jaime"]
[Black "Bolbochan, Jacobo"]
[Result "1-0"]
[ECO "A36"]
[EventDate "1959.03.23"]
[PlyCount "59"]

1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 O-O 5. e4 d6 6. Nge2 c5 7. a3 Nc6 8. Rb1 Bd7 9. O-O Ne8 10. b4 b6 11. d3 Nc7 12. Be3 Ne6 13. f4 Rc8 14. Kh1 Ned4 15. b5 Nxe2 16. Nxe2 Nd4 17. Nxd4 cxd4 18. Bd2 f5 19. Re1 Re8 20. Qb3 Kh8 21. a4 Qc7 22. a5 Rcd8 23. Ra1 Bc8 24. Kg1 Qb8 25. axb6 axb6 26. exf5 Bxf5 27. Ra6 e5 28. Qa3 exf4 29. Rxe8+ Rxe8 30. Ra8 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.26"]
[Round "4"]
[White "Letelier Martner, Rene"]
[Black "Pilnik, Herman"]
[Result "1-0"]
[ECO "E91"]
[EventDate "1959.03.23"]
[PlyCount "55"]

1. c4 Nf6 2. Nc3 c5 3. Nf3 g6 4. d4 Bg7 5. e4 O-O 6. Be2 d6 7. O-O Nc6 8. d5 Na5 9. a3 Nd7 10. Bd2 b6 11. b4 Nb7 12. Qc1 Re8 13. Bh6 Bh8 14. Ng5 e6 15. f4 Qf6 16. dxe6 fxe6 17. e5 Qe7 18. Bg4 Nf8 19. Qe3 Nd8 20. Rad1 dxe5 21. fxe5 Nd7 22. Bxe6+ Nxe6 23. Nd5 Qd8 24. Nxe6 Rxe6 25. Qf3 Bxe5 26. Qf7+ Kh8 27. Qxe6 Qg8 28. Rf8 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.26"]
[Round "4"]
[White "Pachman, Ludek"]
[Black "Rossetto, Hector Decio"]
[Result "1/2-1/2"]
[ECO "A50"]
[EventDate "1959.03.23"]
[PlyCount "148"]

1. d4 Nc6 2. e4 e5 3. d5 Nce7 4. c4 Ng6 5. Be3 Nf6 6. Nc3 Bb4 7. f3 Bxc3+ 8. bxc3 d6 9. c5 O-O 10. Ne2 Nd7 11. cxd6 cxd6 12. Qd2 Qc7 13. c4 f5 14. exf5 Nh4 15. Nc3 Nxf5 16. Bf2 b6 17. Be2 Nc5 18. O-O Bd7 19. f4 exf4 20. Qxf4 Rae8 21. Qd2 Qd8 22. Rae1 Re5 23. Bh5 Ne3 24. Bxe3 Rxf1+ 25. Rxf1 Rxh5 26. Bf4 Qe7 27. Qe2 Qxe2 28. Nxe2 Rf5 29. Nd4 Rf6 30. Nc6 h6 31. Nxa7 g5 32. Bg3 Rxf1+ 33. Kxf1 Bf5 34. Bxd6 Bd3+ 35. Kf2 Nb7 36. Bc7 Bxc4 37. Nc6 Bxa2 38. Ke3 b5 39. Kd4 Kf7 40. Ke5 Nc5 41. Ba5 Bc4 42. Bd2 Nd7+ 43. Kd6 Nb6 44. Ne5+ Kf6 45. Ng4+ Kf5 46. Nxh6+ Kg6 47. Ng4 Kf5 48. Ne3+ Ke4 49. Kc5 Nd7+ 50. Kb4 Be2 51. Bc1 Kd4 52. h3 Nb6 53. d6 Nd7 54. Ka5 Ke5 55. Ba3 Ke4 56. Bc1 Ke5 57. Ba3 Ke4 58. Ng4 Bf1 59. g3 Be2 60. Bb2 Kd5 61. Ne5 Kxd6 62. Nf7+ Kd5 63. Nxg5 Nc5 64. g4 Ne4 65. Nh7 Nf2 66. g5 Bd3 67. Nf6+ Ke6 68. h4 Kf5 69. Bc1 Ne4 70. Nd5 Nc5 71. Kb6 Ne6 72. Kc6 Kg4 73. Kd6 Ng7 74. Nf4 Bb1 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.26"]
[Round "4"]
[White "Redolfi, Rodolfo Argentino"]
[Black "Sanguineti, Raul"]
[Result "0-1"]
[ECO "B26"]
[EventDate "1959.03.23"]
[PlyCount "86"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 e5 6. Be3 d6 7. Qd2 Nge7 8. h4 h6 9. Nh3 Nd4 10. Nd1 Bg4 11. Ng1 d5 12. c3 dxe4 13. dxe4 Bd7 14. f3 Ne6 15. h5 g5 16. Bh3 Qa5 17. Kf2 Rd8 18. Qc2 c4 19. Qe2 b5 20. Kg2 O-O 21. Qc2 Qc7 22. Nf2 f5 23. Bxf5 Nxf5 24. exf5 Rxf5 25. Rd1 Rdf8 26. Ne4 Bc6 27. Rf1 Qb7 28. Nd6 Rxf3 29. Nxf3 Bxf3+ 30. Kg1 Qc6 31. Nf5 Rxf5 32. Qxf5 Bxh1 33. Rf2 Be4 34. Qf7+ Kh7 35. Qxa7 Qd5 36. Qf7 Qd1+ 37. Rf1 Qe2 38. Qf2 Qxh5 39. Qh2 Qg4 40. Qf2 Nf4 41. Bxf4 exf4 42. Re1 fxg3 43. Qe3 Bc6 0-1

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.26"]
[Round "4"]
[White "Sanchez, Luis Augusto"]
[Black "Wexler, Bernardo"]
[Result "1/2-1/2"]
[ECO "E11"]
[EventDate "1959.03.23"]
[PlyCount "71"]

1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 Be7 5. Nc3 d5 6. e3 O-O 7. cxd5 exd5 8. Bd3 c5 9. dxc5 Bxc5 10. O-O Bg4 11. Be2 Nc6 12. Rc1 Qe7 13. Na4 Bd6 14. Bc3 Rfd8 15. Nd4 Qe5 16. g3 Qh5 17. f3 Bd7 18. Nxc6 bxc6 19. Bd4 Be5 20. Nc5 Bh3 21. Rf2 Bxd4 22. Qxd4 Re8 23. Na6 Rac8 24. Qxa7 Qe5 25. Rc3 c5 26. Bf1 Bxf1 27. Kxf1 d4 28. Rxc5 Qxe3 29. Rxc8 Rxc8 30. Nb4 h5 31. Qa6 Rc1+ 32. Kg2 h4 33. Qe2 Qh6 34. Rf1 h3+ 35. Kg1 Rxf1+ 36. Qxf1 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.26"]
[Round "4"]
[White "Shocron, Ruben"]
[Black "Najdorf, Miguel"]
[Result "1/2-1/2"]
[ECO "E86"]
[EventDate "1959.03.23"]
[PlyCount "87"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 e5 6. Nge2 c6 7. Be3 O-O 8. Qd2 exd4 9. Nxd4 d5 10. exd5 cxd5 11. Be2 dxc4 12. Bxc4 a6 13. O-O b5 14. Bb3 Bb7 15. Rad1 Nbd7 16. Qf2 Qc7 17. Rc1 Qe5 18. Nc2 Rac8 19. Bd4 Qh5 20. Rcd1 Rfe8 21. g4 Qh3 22. Qg3 Qxg3+ 23. hxg3 Ne5 24. Nb4 h6 25. Nbd5 Nxd5 26. Bxd5 Bxd5 27. Nxd5 a5 28. b3 Re6 29. Kg2 a4 30. bxa4 bxa4 31. Rf2 Rc4 32. Bb2 Nc6 33. Bxg7 Kxg7 34. Rdd2 Nd4 35. Rb2 Rc1 36. Rfd2 Nc6 37. Rbc2 Ree1 38. Rxc1 Rxc1 39. Kf2 Ne5 40. Ne3 Rc3 41. Rc2 Nd3+ 42. Kf1 Rxc2 43. Nxc2 Kf6 44. a3 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.26"]
[Round "4"]
[White "Souza Mendes, Joao"]
[Black "Fischer, Robert James"]
[Result "0-1"]
[ECO "E81"]
[EventDate "1959.03.23"]
[PlyCount "76"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 e5 6. Nge2 O-O 7. Bg5 c6 8. Qd2 Qa5 9. d5 cxd5 10. Nxd5 Qxd2+ 11. Kxd2 Nxd5 12. cxd5 f6 13. Be3 Nd7 14. Nc3 a6 15. g4 f5 16. gxf5 gxf5 17. Bd3 fxe4 18. fxe4 Nf6 19. Na4 Ng4 20. Raf1 Rxf1 21. Bxf1 Nxe3 22. Kxe3 Bh6+ 23. Kd3 Bd7 24. Rg1+ Kh8 25. Nc3 b5 26. Ne2 b4 27. Kc2 Rc8+ 28. Kb3 a5 29. Rg3 Rf8 30. Bh3 Bb5 31. Ng1 Bf4 32. Rg2 Bf1 33. Rf2 Bd3 34. Bf5 Rb8 35. Nh3 a4+ 36. Kxa4 b3 37. axb3 Be3 38. Rf3 Ra8+ 0-1

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.28"]
[Round "5"]
[White "Bolbochan, Jacobo"]
[Black "Sanchez, Luis Augusto"]
[Result "1/2-1/2"]
[ECO "A48"]
[EventDate "1959.03.23"]
[PlyCount "48"]

1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 d6 5. h3 O-O 6. Be2 Nbd7 7. c3 b6 8. O-O Bb7 9. Nbd2 Re8 10. Nc4 Ne4 11. Bh2 e5 12. Nfd2 Nxd2 13. Nxd2 Qe7 14. Bf3 d5 15. Qb3 c6 16. a4 a5 17. Rfc1 Rac8 18. Qd1 Ba6 19. Nb3 Qe6 20. Rc2 Bc4 21. Rd2 Bh6 22. Nc1 exd4 23. cxd4 Nf6 24. Nd3 Bxd3 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.28"]
[Round "5"]
[White "Fischer, Robert James"]
[Black "Letelier Martner, Rene"]
[Result "0-1"]
[ECO "C97"]
[EventDate "1959.03.23"]
[PlyCount "122"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 Re8 13. Nf1 Bd7 14. Ne3 Bf8 15. dxe5 dxe5 16. Nh2 Rad8 17. Qf3 Be6 18. Nhg4 Nd7 19. Nd5 Qb8 20. h4 Nc4 21. h5 h6 22. b3 Nd6 23. Qg3 Kh8 24. f4 Bxd5 25. exd5 e4 26. Ne5 Qb7 27. Rxe4 Nxe4 28. Nxf7+ Kg8 29. Nxh6+ Kh8 30. Nf7+ Kg8 31. Nxd8 Qxd5 32. Qd3 Qxd3 33. Bxd3 Nxc3 34. Bd2 Ne4 35. Re1 Ndf6 36. Bxe4 Nxe4 37. Nc6 Bd6 38. Bc1 Kf7 39. Bb2 Ng3 40. Ne5+ Bxe5 41. Rxe5 Rxe5 42. Bxe5 Nxh5 43. Kf2 Nf6 44. Kf3 g6 45. Bxf6 Kxf6 46. Ke4 Ke6 47. a4 Kd6 48. a5 Ke6 49. g3 Kd6 50. f5 gxf5+ 51. Kxf5 Kd5 52. g4 Kd4 53. g5 c4 54. bxc4 b4 55. c5 b3 56. c6 b2 57. c7 b1=Q+ 58. Ke6 Qb7 59. Kd7 Kd5 60. g6 Qc6+ 61. Kd8 Qd6+ 0-1

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.28"]
[Round "5"]
[White "Ivkov, Borislav"]
[Black "Emma, Jaime"]
[Result "1-0"]
[ECO "D34"]
[EventDate "1959.03.23"]
[PlyCount "121"]

1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 Be7 8. O-O O-O 9. dxc5 d4 10. Na4 Bf5 11. Bf4 Be4 12. Rc1 Qd5 13. a3 Rad8 14. b4 Nh5 15. Bd6 Rfe8 16. b5 Bxd6 17. cxd6 Ne5 18. Rc5 Qxd6 19. Nxe5 Rxe5 20. Bxe4 Rxc5 21. Nxc5 Qxc5 22. Qd3 b6 23. Bxh7+ Kf8 24. Be4 Nf6 25. Bf3 Rd6 26. Rd1 Nd7 27. Qh7 Rh6 28. Qe4 Rd6 29. a4 Ne5 30. Bg2 g6 31. h3 Kg7 32. Kh2 d3 33. exd3 Rd4 34. Qe3 Qd6 35. Re1 Nd7 36. Bc6 Rxd3 37. Qe7 Qd4 38. Re2 Nf6 39. Qe5 Qxe5 40. Rxe5 Ra3 41. g4 Rxa4 42. Re7 Kf8 43. Rb7 Ne4 44. Bd5 f6 45. Rf7+ Ke8 46. f3 Nc3 47. Be6 Rf4 48. Rxa7 g5 49. Rb7 Rb4 50. Bd7+ Ke7 51. Bf5+ Kd6 52. Rxb6+ Ke5 53. Kg3 Ne2+ 54. Kf2 Nf4 55. Rb8 Rb2+ 56. Ke1 Kd4 57. b6 Ng2+ 58. Kd1 Ne3+ 59. Kc1 Nc4 60. Rd8+ Ke5 61. Rc8 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.28"]
[Round "5"]
[White "Pilnik, Herman"]
[Black "Redolfi, Rodolfo Argentino"]
[Result "1-0"]
[ECO "C65"]
[EventDate "1959.03.23"]
[PlyCount "79"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. Qe2 Be7 5. c3 d6 6. d4 Bd7 7. dxe5 Nxe5 8. Nxe5 dxe5 9. O-O O-O 10. Bc4 Qc8 11. Nd2 Ne8 12. Nf3 Bf6 13. Be3 b6 14. Ba6 Qd8 15. Rfd1 Nd6 16. c4 Qe7 17. c5 Ne8 18. b4 g6 19. Qc2 Bg4 20. Be2 Bxf3 21. Bxf3 Ng7 22. Bg4 Ne6 23. Bxe6 Qxe6 24. Rd5 Rfd8 25. Rad1 Qe7 26. Qd3 c6 27. Rd6 Rxd6 28. cxd6 Qd7 29. b5 c5 30. Qd5 Rc8 31. Bd2 c4 32. Bb4 c3 33. Rc1 c2 34. Qd3 Bg7 35. Rxc2 Rxc2 36. Qxc2 Kf8 37. Qc6 Ke8 38. Qa8+ Qd8 39. d7+ Kxd7 40. Qc6# 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.28"]
[Round "5"]
[White "Rossetto, Hector Decio"]
[Black "Souza Mendes, Joao"]
[Result "1-0"]
[ECO "A55"]
[EventDate "1959.03.23"]
[PlyCount "63"]

1. c4 Nf6 2. Nc3 e5 3. g3 Be7 4. Bg2 c6 5. d4 d6 6. e4 O-O 7. Nf3 Nbd7 8. O-O Re8 9. h3 Bf8 10. d5 cxd5 11. cxd5 Nc5 12. Re1 Bd7 13. b4 Na6 14. Qb3 b5 15. Be3 Qc8 16. Kh2 Qb7 17. Rac1 Rec8 18. Nd2 Nc7 19. Qb2 a5 20. a3 a4 21. f4 Nfe8 22. Nf3 f6 23. Qf2 g6 24. Rf1 Bh6 25. Rce1 exf4 26. gxf4 Ng7 27. Nd4 Nce8 28. Nce2 Rc4 29. Bf3 Nh5 30. Bxh5 gxh5 31. Qh4 Bc8 32. Qxh5 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.28"]
[Round "5"]
[White "Sanguineti, Raul"]
[Black "Shocron, Ruben"]
[Result "1-0"]
[ECO "C97"]
[EventDate "1959.03.23"]
[PlyCount "73"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 Bd7 13. Nf1 Nc4 14. a4 cxd4 15. cxd4 Rfc8 16. axb5 Bxb5 17. Bd3 Rab8 18. Ng3 g6 19. Re2 Nd7 20. Rc2 Qb6 21. Ne2 exd4 22. Nfxd4 Bf6 23. Nxb5 axb5 24. Nc3 Bxc3 25. Rxc3 Qd4 26. Qe2 d5 27. Bxc4 Rxc4 28. exd5 Qxd5 29. Bh6 Rxc3 30. bxc3 Qe5 31. Qd2 Qf5 32. Ra6 Re8 33. Qd4 f6 34. Ra7 Nf8 35. Rg7+ Kh8 36. Qa7 g5 37. Rg8+ 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.28"]
[Round "5"]
[White "Wexler, Bernardo"]
[Black "Pachman, Ludek"]
[Result "1/2-1/2"]
[ECO "D46"]
[EventDate "1959.03.23"]
[PlyCount "88"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 Nbd7 7. O-O c6 8. a3 Bd6 9. e4 dxc4 10. Bxc4 e5 11. Bg5 Qe7 12. d5 h6 13. Bh4 Rd8 14. Ba2 Nf8 15. Nd2 Ng6 16. Bg3 Bc5 17. h3 Bd4 18. Qf3 c5 19. Nc4 Bd7 20. Ne2 Bb5 21. Rab1 Ne8 22. Rfe1 Qg5 23. Bb3 Rac8 24. a4 Bxc4 25. Bxc4 Nd6 26. b3 Qd2 27. h4 f6 28. Red1 Qb4 29. Rdc1 a6 30. Bd3 b5 31. Qg4 Nf8 32. Kh2 Re8 33. Nxd4 Qxd4 34. Qe2 c4 35. bxc4 bxc4 36. Bc2 Ng6 37. f3 Nf4 38. Qf1 Rb8 39. Bf2 Qd2 40. Be1 Qxc2 41. Rxc2 Rxb1 42. Qg1 Nd3 43. Re2 Nf4 44. Rc2 Nd3 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.29"]
[Round "6"]
[White "Letelier Martner, Rene"]
[Black "Rossetto, Hector Decio"]
[Result "1-0"]
[ECO "A50"]
[EventDate "1959.03.23"]
[PlyCount "81"]

1. c4 Nc6 2. d4 e5 3. d5 Nce7 4. Nc3 Nf6 5. e4 Ng6 6. h4 h5 7. Bg5 d6 8. Nge2 Be7 9. Ng3 Ng4 10. Bxe7 Qxe7 11. Nf5 Qf6 12. Bd3 Nxh4 13. Rxh4 Bxf5 14. Rxg4 Bxg4 15. Qa4+ Bd7 16. Qc2 Qg5 17. Bf1 a6 18. Nd1 h4 19. Ne3 h3 20. gxh3 Bxh3 21. O-O-O Bxf1 22. Rxf1 O-O-O 23. Kb1 Kb8 24. a3 Rh2 25. Re1 Qf4 26. Re2 g6 27. Ka2 Rdh8 28. c5 dxc5 29. Qxc5 Qxe4 30. Rc2 Rc8 31. Rc4 Qd3 32. Rb4 b6 33. Nc4 Qd4 34. Qc6 Rd8 35. d6 Rxd6 36. Nxd6 Qxd6 37. Rxb6+ Kc8 38. Qe8+ Qd8 39. Rb8+ Kxb8 40. Qxd8+ Kb7 41. Qd5+ 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.29"]
[Round "6"]
[White "Najdorf, Miguel"]
[Black "Sanguineti, Raul"]
[Result "1-0"]
[ECO "D95"]
[EventDate "1959.03.23"]
[PlyCount "87"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. e3 O-O 6. Qb3 e6 7. Bd2 b6 8. Rc1 Bb7 9. cxd5 Nxd5 10. Nxd5 Bxd5 11. Bc4 Bxc4 12. Qxc4 c5 13. dxc5 Bxb2 14. Rc2 Ba3 15. cxb6 axb6 16. Bc3 Na6 17. O-O Nc5 18. Ne5 f6 19. Rd2 Qe8 20. Nf3 Ra4 21. Qe2 Ne4 22. Rc2 Nxc3 23. Rxc3 Bc5 24. Rc2 e5 25. Nd2 Qe6 26. Nb3 Rfa8 27. h3 Be7 28. Rd1 R4a7 29. Qb5 Bc5 30. Nxc5 bxc5 31. Qxc5 Rxa2 32. Rxa2 Qxa2 33. Rd7 Rf8 34. Rxh7 Kxh7 35. Qxf8 Qe6 36. h4 e4 37. g3 Qf5 38. Qf7+ Kh6 39. Qf8+ Kh5 40. Qd6 g5 41. Qd1+ Kh6 42. g4 Qe5 43. h5 f5 44. Qd4 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.29"]
[Round "6"]
[White "Pachman, Ludek"]
[Black "Bolbochan, Jacobo"]
[Result "1-0"]
[ECO "A30"]
[EventDate "1959.03.23"]
[PlyCount "75"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 c5 4. g3 b6 5. Bg2 Bb7 6. O-O Be7 7. d4 cxd4 8. Qxd4 Nc6 9. Qf4 O-O 10. Rd1 Qb8 11. Qxb8 Raxb8 12. Bf4 Rbc8 13. Ne5 d6 14. Nxc6 Bxc6 15. Bxd6 Bxd6 16. Rxd6 Bxg2 17. Kxg2 Rxc4 18. Rad1 Re8 19. f3 Kf8 20. e4 e5 21. g4 h6 22. h4 Rec8 23. Kf2 R4c6 24. Rxc6 Rxc6 25. Rd8+ Ke7 26. Ra8 a5 27. Ke3 g6 28. Rb8 h5 29. g5 Nd7 30. Nd5+ Kd6 31. Rd8 Ke6 32. Kd2 Rc4 33. b3 Rd4+ 34. Kc3 f5 35. gxf6 Nxf6 36. Nf4+ Kf7 37. Rxd4 exd4+ 38. Kxd4 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.29"]
[Round "6"]
[White "Redolfi, Rodolfo Argentino"]
[Black "Fischer, Robert James"]
[Result "0-1"]
[ECO "B52"]
[EventDate "1959.03.23"]
[PlyCount "80"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. Nc3 Nc6 6. d4 cxd4 7. Nxd4 g6 8. O-O Bg7 9. Be3 Nf6 10. f3 O-O 11. Qd2 Rac8 12. Rad1 Rfd8 13. Rf2 Nb8 14. b3 d5 15. Nxd5 Nxd5 16. exd5 Qxd5 17. c4 Qc5 18. Rff1 a6 19. Qf2 Qa5 20. h3 Qc3 21. Rc1 Qa5 22. Rcd1 Rd6 23. f4 Nc6 24. Nxc6 Rdxc6 25. Rd7 R6c7 26. Rfd1 Bf6 27. Rd8+ Kg7 28. Bb6 Qb4 29. Bxc7 Rxc7 30. R8d7 Rc6 31. Kh2 b5 32. Rb7 Re6 33. Rd2 Qc3 34. cxb5 Qa1 35. g3 Bc3 36. Rd3 Re1 37. bxa6 Rb1 38. Rbd7 Bb4 39. a7 Bc5 40. Qxc5 Rh1+ 0-1

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.29"]
[Round "6"]
[White "Sanchez, Luis Augusto"]
[Black "Ivkov, Borislav"]
[Result "0-1"]
[ECO "A85"]
[EventDate "1959.03.23"]
[PlyCount "86"]

1. c4 f5 2. Nf3 Nf6 3. d4 e6 4. Nc3 Bb4 5. e3 b6 6. Bd2 Bb7 7. Be2 O-O 8. O-O Bxc3 9. Bxc3 Ne4 10. Be1 d6 11. Nd2 Nd7 12. Nxe4 Bxe4 13. Rc1 Qg5 14. f3 Bb7 15. Qd2 e5 16. d5 a5 17. b3 Nc5 18. Rc3 Bc8 19. Bd1 f4 20. Qf2 fxe3 21. Qxe3 Qg6 22. Bc2 Bf5 23. Bxf5 Rxf5 24. Qe2 Raf8 25. Bf2 Nd7 26. Be3 Nf6 27. Bd2 h5 28. Be1 Qh7 29. h4 Rf4 30. Bg3 Ne4 31. Bxf4 Nxc3 32. Qd2 Rxf4 33. Qxc3 Rxh4 34. f4 Rxf4 35. Rxf4 exf4 36. Qh3 Qg6 37. Qc8+ Kh7 38. Kh1 Qf7 39. Kg1 g5 40. a3 g4 41. b4 axb4 42. axb4 Kg6 43. Kf2 Qg7 0-1

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.29"]
[Round "6"]
[White "Shocron, Ruben"]
[Black "Pilnik, Herman"]
[Result "1-0"]
[ECO "D82"]
[EventDate "1959.03.23"]
[PlyCount "107"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Bf4 dxc4 5. e4 Bg7 6. Bxc4 O-O 7. h3 Nfd7 8. Nf3 Nb6 9. Bb3 Nc6 10. d5 Na5 11. O-O c6 12. Re1 Nxb3 13. Qxb3 cxd5 14. Nxd5 Be6 15. Rad1 Bxd5 16. exd5 Qd7 17. Bg5 Rfe8 18. Bh4 Rac8 19. Ng5 Qa4 20. Qxa4 Nxa4 21. Re2 Bxb2 22. Rb1 Ba3 23. Rxb7 Rc1+ 24. Kh2 Nc3 25. Re3 Bc5 26. Rd3 h6 27. d6 hxg5 28. d7 Rd8 29. Bxg5 Rb1 30. Rc7 Rbb8 31. Rxc5 Ne4 32. Ra5 Nxg5 33. Rxg5 Rb7 34. Rgd5 e6 35. R5d4 Kf8 36. h4 Ke7 37. g4 Rb2 38. Rd2 Rb5 39. Kg3 Ra5 40. R4d3 f5 41. f3 Rc5 42. Kf4 fxg4 43. fxg4 Ra5 44. Rh2 e5+ 45. Kf3 Rxd7 46. Rxd7+ Kxd7 47. h5 gxh5 48. gxh5 Ke6 49. h6 e4+ 50. Kf4 Rf5+ 51. Kg4 Rf8 52. h7 Rh8 53. Kg5 Kf7 54. Kh6 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.29"]
[Round "6"]
[White "Souza Mendes, Joao"]
[Black "Wexler, Bernardo"]
[Result "0-1"]
[ECO "B37"]
[EventDate "1959.03.23"]
[PlyCount "74"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Nc2 d6 7. Be2 Nf6 8. Nc3 Be6 9. O-O Nd7 10. Bd2 Rc8 11. Rb1 a6 12. Ne3 O-O 13. Ncd5 Nc5 14. f3 Bd7 15. Bc3 e5 16. Qe1 Nd4 17. Rf2 f5 18. exf5 gxf5 19. Bf1 f4 20. Bxd4 exd4 21. Nd1 Kh8 22. Rd2 Qg5 23. Nf2 Rce8 24. Qd1 a5 25. b4 axb4 26. Nxb4 Na4 27. Nd5 Bc6 28. Qc2 Nc3 29. Nxc3 dxc3 30. Rxd6 Bxf3 31. Rb5 Qe7 32. Rd3 Bc6 33. Rh3 h6 34. Rbh5 Qf6 35. Kh1 f3 36. g4 Re2 37. Qc1 Qf4 0-1

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.30"]
[Round "7"]
[White "Bolbochan, Jacobo"]
[Black "Souza Mendes, Joao"]
[Result "1-0"]
[ECO "A36"]
[EventDate "1959.03.23"]
[PlyCount "97"]

1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 e6 6. Nge2 Nge7 7. O-O O-O 8. b3 d5 9. Bb2 d4 10. Na4 Qd6 11. exd4 Nxd4 12. Nec3 Rb8 13. Ne4 Qc7 14. Nexc5 b6 15. Nd3 Bb7 16. Ne1 Rfd8 17. Bxd4 Bxd4 18. Rc1 Bxg2 19. Kxg2 Qd6 20. Qe2 Bg7 21. Nf3 Nc6 22. Rfd1 Qa3 23. Nc3 Nd4 24. Nxd4 Bxd4 25. d3 Bxc3 26. Rxc3 Rd4 27. Qc2 Rc8 28. Re1 Rcd8 29. Re3 h5 30. Qe2 Qd6 31. h4 Kg7 32. Qf3 a5 33. Qe2 Qa3 34. Re4 Qd6 35. Rxd4 Qxd4 36. Qc2 Qd6 37. c5 Qc6+ 38. Kg1 b5 39. Qe2 Rd5 40. Qe4 f5 41. Qe2 e5 42. Rc1 Kf7 43. Kh2 Kg7 44. a3 b4 45. axb4 axb4 46. Rc4 Kf7 47. Qd2 Ke6 48. Qh6 Kf7 49. Rxb4 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.30"]
[Round "7"]
[White "Emma, Jaime"]
[Black "Sanchez, Luis Augusto"]
[Result "1/2-1/2"]
[ECO "B25"]
[EventDate "1959.03.23"]
[PlyCount "81"]

1. Nc3 c5 2. e4 g6 3. g3 Bg7 4. Bg2 Nc6 5. d3 d6 6. Nge2 Nf6 7. O-O O-O 8. h3 Ne8 9. Be3 Nd4 10. Kh2 Rb8 11. Ng1 b5 12. Qd2 b4 13. Nd1 Nc7 14. c3 bxc3 15. bxc3 Nc6 16. f4 Qd7 17. f5 Ne5 18. Nf3 Ba6 19. Nxe5 Bxe5 20. Rf2 Rfc8 21. d4 cxd4 22. Bxd4 Bxd4 23. cxd4 d5 24. e5 Rb6 25. Ne3 Rf8 26. Rc1 Bc4 27. f6 exf6 28. exf6 Ne8 29. Ng4 Qd8 30. Re1 Nxf6 31. Ne5 Kg7 32. Re3 Ng8 33. Ref3 f6 34. Nxc4 dxc4 35. Rc3 Ne7 36. Rxc4 Rd6 37. d5 Rf7 38. Rc5 Nc8 39. Qc3 Nb6 40. Qd3 Rfd7 41. Qd4 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.30"]
[Round "7"]
[White "Fischer, Robert James"]
[Black "Shocron, Ruben"]
[Result "1-0"]
[ECO "C97"]
[EventDate "1959.03.23"]
[PlyCount "79"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. c3 d6 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 Bd7 13. Nf1 Rfe8 14. Ne3 g6 15. dxe5 dxe5 16. Nh2 Rad8 17. Qf3 Be6 18. Nhg4 Nxg4 19. hxg4 Qc6 20. g5 Nc4 21. Ng4 Bxg4 22. Qxg4 Nb6 23. g3 c4 24. Kg2 Nd7 25. Rh1 Nf8 26. b4 Qe6 27. Qe2 a5 28. bxa5 Qa6 29. Be3 Qxa5 30. a4 Ra8 31. axb5 Qxb5 32. Rhb1 Qc6 33. Rb6 Qc7 34. Rba6 Rxa6 35. Rxa6 Rc8 36. Qg4 Ne6 37. Ba4 Rb8 38. Rc6 Qd8 39. Rxe6 Qc8 40. Bd7 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.30"]
[Round "7"]
[White "Ivkov, Borislav"]
[Black "Pachman, Ludek"]
[Result "1/2-1/2"]
[ECO "D78"]
[EventDate "1959.03.23"]
[PlyCount "38"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d5 6. O-O c6 7. Qb3 Qb6 8. Nc3 h6 9. cxd5 Qxb3 10. axb3 Nxd5 11. Nxd5 cxd5 12. Ne5 Be6 13. Nd3 Bxd4 14. Nf4 Kg7 15. Nxd5 Bxd5 16. Bxd5 Nc6 17. Ra4 Rfd8 18. Bxc6 bxc6 19. Rc4 c5 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.30"]
[Round "7"]
[White "Pilnik, Herman"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "B93"]
[EventDate "1959.03.23"]
[PlyCount "66"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 e5 7. Nf3 Nbd7 8. Bc4 Be7 9. a4 O-O 10. f5 b6 11. Ng5 Bb7 12. Qe2 Nc5 13. Ra3 h6 14. h4 b5 15. axb5 axb5 16. Bxb5 Rxa3 17. bxa3 Qa5 18. Bd2 Qxa3 19. Bd3 d5 20. exd5 Nxd5 21. f6 Nxf6 22. Bc4 Qa1+ 23. Nd1 Nfe4 24. Nxe4 Nxe4 25. Rh3 Rd8 26. Qf3 Bf6 27. Qh5 Qd4 28. Bxf7+ Kf8 29. Be3 Qb4+ 30. c3 Nxc3 31. Nxc3 Qxc3+ 32. Kf2 Qc2+ 33. Ke1 Ra8 0-1

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.30"]
[Round "7"]
[White "Rossetto, Hector Decio"]
[Black "Redolfi, Rodolfo Argentino"]
[Result "1-0"]
[ECO "E67"]
[EventDate "1959.03.23"]
[PlyCount "77"]

1. c4 Nf6 2. Nc3 e5 3. g3 g6 4. Bg2 Bg7 5. Nf3 d6 6. d4 Nbd7 7. O-O exd4 8. Nxd4 O-O 9. h3 Re8 10. Nc2 Nc5 11. Bg5 h6 12. Be3 Nfe4 13. Nxe4 Nxe4 14. Bd4 Qe7 15. e3 c5 16. Bxg7 Kxg7 17. Ne1 Bd7 18. Nd3 Bc6 19. Nf4 Nf6 20. Nd5 Nxd5 21. Bxd5 Qe5 22. Bxc6 bxc6 23. Qc2 Rab8 24. b3 h5 25. Rad1 Rbc8 26. Rd3 Re6 27. Rfd1 Rd8 28. h4 g5 29. hxg5 Qxg5 30. Qb2+ Kg8 31. Kg2 Qg6 32. Qe2 h4 33. g4 f5 34. Kh3 Kf7 35. Rg1 Re4 36. Qf3 Rg8 37. Rxd6 Qg5 38. Rdd1 Rxg4 39. Rd7+ 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.30"]
[Round "7"]
[White "Wexler, Bernardo"]
[Black "Letelier Martner, Rene"]
[Result "1/2-1/2"]
[ECO "A09"]
[EventDate "1959.03.23"]
[PlyCount "98"]

1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. O-O e5 5. d3 Bd6 6. c4 d4 7. e3 Nge7 8. exd4 cxd4 9. Na3 O-O 10. Nc2 a5 11. b3 h6 12. Re1 Bg4 13. a3 Qd7 14. Rb1 Rab8 15. b4 axb4 16. Nxb4 Bh3 17. Bh1 Ng6 18. Nd2 Nxb4 19. axb4 b5 20. c5 Bc7 21. Ra1 Kh7 22. Ra7 f5 23. Qb3 Rbd8 24. Bb2 Rf6 25. Bf3 Qc8 26. Rea1 Bb8 27. R7a5 e4 28. dxe4 f4 29. e5 Nxe5 30. Be4+ Bf5 31. Qc2 fxg3 32. hxg3 d3 33. Qd1 Bxe4 34. Nxe4 Nf3+ 35. Kg2 Rf7 36. Nf6+ gxf6 37. Qxf3 d2 38. Rd1 Qe6 39. Ra3 f5 40. Re3 Qg6 41. Rd3 Rdf8 42. R1xd2 f4 43. Rd7 fxg3 44. fxg3 Qe6 45. Qb7 Bxg3 46. Qd5 Qg6 47. Qd3 Rxd7 48. Qxg6+ Kxg6 49. Rxd7 Rf2+ 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.31"]
[Round "8"]
[White "Letelier Martner, Rene"]
[Black "Bolbochan, Jacobo"]
[Result "1-0"]
[ECO "E94"]
[EventDate "1959.03.23"]
[PlyCount "31"]

1. c4 Nf6 2. Nc3 d6 3. d4 e5 4. Nf3 Nbd7 5. e4 g6 6. dxe5 dxe5 7. Qc2 Bg7 8. Be2 O-O 9. O-O c6 10. h3 Qe7 11. a3 Nc5 12. Be3 Nh5 13. Rfe1 Nf4 14. Bf1 a5 15. b4 axb4 16. Bxc5 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.31"]
[Round "8"]
[White "Najdorf, Miguel"]
[Black "Fischer, Robert James"]
[Result "1/2-1/2"]
[ECO "E62"]
[EventDate "1959.03.23"]
[PlyCount "69"]

1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. d4 d6 6. O-O Nc6 7. Nc3 e5 8. d5 Ne7 9. e4 Nd7 10. b4 f5 11. Ng5 Nf6 12. Ba3 fxe4 13. Ncxe4 Nf5 14. Bb2 Nxe4 15. Nxe4 Nd4 16. f4 Bf5 17. Qd2 c5 18. dxc6 bxc6 19. Kh1 Qd7 20. Rae1 Rad8 21. fxe5 dxe5 22. c5 Qe6 23. Nd6 Nb5 24. Qe3 Nxd6 25. cxd6 Rxd6 26. Bxe5 Bxe5 27. Qxe5 Qxe5 28. Rxe5 Be6 29. Rxf8+ Kxf8 30. Bf3 Bxa2 31. Ra5 Bd5 32. Bxd5 cxd5 33. Rxa7 d4 34. Kg2 d3 35. Ra1 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.31"]
[Round "8"]
[White "Pachman, Ludek"]
[Black "Emma, Jaime"]
[Result "0-1"]
[ECO "A25"]
[EventDate "1959.03.23"]
[PlyCount "44"]

1. c4 Nc6 2. Nc3 e5 3. g3 g6 4. Bg2 Bg7 5. e3 d6 6. Nge2 Be6 7. d4 exd4 8. exd4 Bxc4 9. d5 Ne5 10. O-O Ne7 11. f4 Nd7 12. g4 h5 13. f5 hxg4 14. f6 Nxf6 15. Qd4 Bxe2 16. Rxf6 O-O 17. Ne4 Nf5 18. Qc3 Qe7 19. Bg5 Qe5 20. Re1 Qxc3 21. bxc3 Bc4 22. Nd2 Bd3 0-1

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.31"]
[Round "8"]
[White "Redolfi, Rodolfo Argentino"]
[Black "Wexler, Bernardo"]
[Result "0-1"]
[ECO "B26"]
[EventDate "1959.03.23"]
[PlyCount "72"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Be3 e6 7. Qc1 Nge7 8. f4 Rb8 9. Nf3 Nd4 10. Nd1 b5 11. Nd2 b4 12. c3 bxc3 13. bxc3 Ndc6 14. Rb1 Ba6 15. Qc2 Rxb1 16. Nxb1 Qa5 17. O-O d5 18. exd5 exd5 19. Nd2 d4 20. Nb3 Qb6 21. cxd4 cxd4 22. Bd2 O-O 23. Nf2 Rb8 24. Rc1 Rc8 25. Qc5 Bb5 26. g4 Qa6 27. Be4 Bf8 28. Nxd4 Qxa2 29. Bc3 Nf5 30. Qxb5 Ncxd4 31. Qd7 Rxc3 32. Re1 Ne2+ 33. Kg2 Nxf4+ 34. Kf3 Nd6 35. Kxf4 Qxf2+ 36. Ke5 Qxe1 0-1

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.31"]
[Round "8"]
[White "Sanguineti, Raul"]
[Black "Pilnik, Herman"]
[Result "1/2-1/2"]
[ECO "D88"]
[EventDate "1959.03.23"]
[PlyCount "115"]

1. c4 Nf6 2. Nc3 g6 3. d4 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 O-O 8. Ne2 c5 9. O-O cxd4 10. cxd4 Nc6 11. Be3 Na5 12. Bd3 b6 13. Rc1 Bb7 14. Qa4 e5 15. d5 f5 16. f3 Bc8 17. Nc3 a6 18. Qb4 b5 19. Bc5 Rf7 20. a4 Nb7 21. axb5 Nxc5 22. Qxc5 Bf8 23. Qe3 f4 24. Qe2 Bc5+ 25. Kh1 Be3 26. Rc2 axb5 27. Bxb5 Rfa7 28. Qc4 Kg7 29. Rd1 Ba6 30. Bxa6 Rxa6 31. Rb2 Kh6 32. g3 Qd7 33. Kg2 Rf6 34. Rdb1 Rc8 35. Qd3 Bd4 36. Rb3 Qa7 37. Ne2 Be3 38. Ra3 Qd7 39. h4 Qe7 40. Rab3 Qa7 41. g4 Rf7 42. g5+ Kh5 43. Ra3 Qd7 44. Rh1 Bb6 45. Ra6 Rb8 46. Qd1 Qc8 47. Ra2 Rc7 48. d6 Rcb7 49. Rd2 Qd7 50. Rd5 Bd8 51. Rxe5 Rb2 52. Kf1 Rxe2 53. Qxe2 Rb1+ 54. Kg2 Rxh1 55. Kxh1 Qh3+ 56. Qh2 Qf1+ 57. Qg1 Qh3+ 58. Qh2 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.31"]
[Round "8"]
[White "Shocron, Ruben"]
[Black "Rossetto, Hector Decio"]
[Result "0-1"]
[ECO "B26"]
[EventDate "1959.03.23"]
[PlyCount "82"]

1. e4 c5 2. Nc3 e6 3. g3 Nc6 4. Bg2 g6 5. d3 Bg7 6. Be3 Qa5 7. Nge2 Nd4 8. O-O Ne7 9. Nc1 d6 10. Qd2 Bd7 11. f4 O-O 12. Qf2 Rab8 13. Nd1 Ba4 14. b3 Bc6 15. c3 Nb5 16. Ne2 Nxc3 17. Ndxc3 Bxc3 18. Nxc3 Qxc3 19. d4 b6 20. Rac1 Qa5 21. f5 exf5 22. Bh6 Bb5 23. Bxf8 Rxf8 24. Rfd1 Qa3 25. Rc3 fxe4 26. Bxe4 Nc6 27. Bxc6 Bxc6 28. d5 Bb5 29. Qf4 c4 30. Rc2 cxb3 31. Qf3 Bc4 32. Qc3 b5 33. h4 h5 34. g4 Qa4 35. gxh5 bxa2 36. Qa1 Qb3 37. hxg6 f6 38. Qd4 Bxd5 39. Kh2 Qc4 40. Qxc4 Bxc4 41. Kg3 Kg7 0-1

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.03.31"]
[Round "8"]
[White "Souza Mendes, Joao"]
[Black "Ivkov, Borislav"]
[Result "1/2-1/2"]
[ECO "A73"]
[EventDate "1959.03.23"]
[PlyCount "96"]

1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. e4 Bg7 8. Be2 O-O 9. O-O Bg4 10. h3 Bxf3 11. Bxf3 Nbd7 12. Bf4 Qe7 13. Qd2 a6 14. a4 b6 15. Rae1 Ne8 16. Bg4 Ne5 17. Be2 Nc7 18. Be3 Nd7 19. Bd3 Rab8 20. Qe2 b5 21. axb5 axb5 22. Nxb5 Ne5 23. Nxc7 Qxc7 24. Bc2 Rxb2 25. f4 Nd7 26. Rb1 Rfb8 27. Rxb2 Rxb2 28. Rb1 Qb6 29. Rxb2 Qxb2 30. Bd3 Qa1+ 31. Kh2 Bd4 32. Bb5 Nf6 33. Qd3 h5 34. Bxd4 Qxd4 35. Qxd4 cxd4 36. Bd3 h4 37. g4 g5 38. Kg2 gxf4 39. Kf3 Nd7 40. Kxf4 Kg7 41. Bb5 Ne5 42. Kg5 d3 43. Kxh4 d2 44. Be2 f6 45. g5 Kg6 46. Bh5+ Kg7 47. Be2 Kg6 48. Bh5+ Kg7 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.02"]
[Round "9"]
[White "Bolbochan, Jacobo"]
[Black "Redolfi, Rodolfo Argentino"]
[Result "0-1"]
[ECO "B47"]
[EventDate "1959.03.23"]
[PlyCount "62"]

1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. d4 cxd4 5. Nxd4 Qc7 6. g3 Nf6 7. Bg2 Nc6 8. Be3 Be7 9. O-O O-O 10. Qe2 Rd8 11. Rad1 Rb8 12. Nb3 d6 13. g4 Ne5 14. g5 Nfd7 15. f4 Nc4 16. Bc1 b5 17. Qf2 Ndb6 18. Nd4 e5 19. Nde2 d5 20. Qg3 dxe4 21. Rxd8+ Qxd8 22. Nxe4 Nd5 23. Kh1 Qb6 24. Rf3 Bf5 25. N2c3 Nxc3 26. Nxc3 Rd8 27. fxe5 Bxc2 28. Rf2 Qg6 29. Bd5 Rxd5 30. Nxd5 Be4+ 31. Kg1 Bxd5 0-1

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.02"]
[Round "9"]
[White "Emma, Jaime"]
[Black "Souza Mendes, Joao"]
[Result "0-1"]
[ECO "E66"]
[EventDate "1959.03.23"]
[PlyCount "84"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. c4 c5 6. d4 d6 7. Nc3 Nc6 8. d5 Na5 9. Nd2 e6 10. Qc2 exd5 11. cxd5 Bd7 12. h3 b5 13. e4 b4 14. Nd1 Bb5 15. Re1 c4 16. a3 b3 17. Qb1 Nd7 18. Nf3 Nc5 19. Bd2 Nd3 20. Re3 Nb7 21. Bc3 Bh6 22. Re2 Nc1 23. Re1 Nc5 24. Nd4 Ba6 25. Ne3 N1d3 26. Nc6 Qc7 27. Qd1 Nxe1 28. Ng4 Bg7 29. Bxg7 Kxg7 30. Qd2 f6 31. Rxe1 Rae8 32. f4 Nd3 33. Rf1 Qb6+ 34. Kh2 Bb5 35. e5 fxe5 36. f5 Qc7 37. Ne7 Rxe7 38. f6+ Kh8 39. Be4 Be8 40. Qh6 Kg8 41. Bf5 gxf5 42. Qg5+ Rg7 0-1

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.02"]
[Round "9"]
[White "Fischer, Robert James"]
[Black "Sanguineti, Raul"]
[Result "1-0"]
[ECO "C97"]
[EventDate "1959.03.23"]
[PlyCount "131"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 Re8 13. Nf1 Bf8 14. Bg5 Nd7 15. Ne3 Nb6 16. Rc1 f6 17. Bh4 Be6 18. Nd5 Qb7 19. b4 Nac4 20. Nxb6 Qxb6 21. Bb3 cxd4 22. cxd4 a5 23. bxa5 Nxa5 24. Bxe6+ Rxe6 25. Qd3 Ree8 26. Rb1 b4 27. Re2 Reb8 28. Reb2 Qb5 29. Qxb5 Rxb5 30. d5 Rab8 31. Nd2 Kf7 32. f3 g6 33. Be1 Bh6 34. a4 Be3+ 35. Kf1 R5b7 36. Nb3 Nc4 37. Ra2 Ra8 38. Ke2 Na3 39. Rbb2 Bg1 40. a5 Raa7 41. Ra1 Bc5 42. Rc1 Rc7 43. Bd2 Nb5 44. Rbc2 Na3 45. Rb2 Nb5 46. Kd3 Na3 47. Nxc5 dxc5 48. Be3 c4+ 49. Ke2 b3 50. Bb6 Rcb7 51. Ra1 Nc2 52. Rxc2 bxc2 53. Rc1 Ra8 54. Rxc2 Rc8 55. Kd2 Ke7 56. Kc3 Kd7 57. Kb4 Rbb8 58. Rxc4 Rxc4+ 59. Kxc4 Rc8+ 60. Bc5 Rb8 61. a6 Rb2 62. a7 Ra2 63. Kb5 Kc7 64. d6+ Kb7 65. d7 Rd2 66. a8=Q+ 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.02"]
[Round "9"]
[White "Ivkov, Borislav"]
[Black "Letelier Martner, Rene"]
[Result "1-0"]
[ECO "D36"]
[EventDate "1959.03.23"]
[PlyCount "115"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Be7 6. e3 Nbd7 7. Qc2 Nf8 8. Bd3 g6 9. Nge2 Ne6 10. Bh4 O-O 11. h3 c6 12. O-O-O b5 13. g4 a5 14. Nf4 Nxf4 15. exf4 a4 16. Rhe1 Ra7 17. Kb1 Ne8 18. Rxe7 Rxe7 19. Bxe7 Qxe7 20. Nxd5 cxd5 21. Qxc8 Nc7 22. Qb7 a3 23. bxa3 Ra8 24. Bc2 Rxa3 25. Bb3 b4 26. Rc1 Qe4+ 27. Rc2 Ne6 28. Qb8+ Kg7 29. Qe5+ Qxe5 30. dxe5 Nxf4 31. Rc7 Ra5 32. Rb7 g5 33. Rxb4 Nxh3 34. f3 Nf4 35. Rb7 Rc5 36. a4 Rc6 37. a5 Ra6 38. Rb5 d4 39. Kc2 Kf8 40. Kd2 Kg7 41. Bc4 Ra7 42. e6 fxe6 43. a6 Kf6 44. Rb7 Ra8 45. a7 Ng6 46. Bd3 Ne7 47. Be4 Nd5 48. Rxh7 Ke5 49. Rg7 Kd6 50. Kd3 Kc5 51. Bxd5 exd5 52. Rf7 Re8 53. Re7 Rf8 54. Rc7+ Kd6 55. Rf7 Rc8 56. Rf6+ Kc5 57. Ra6 Ra8 58. Ra1 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.02"]
[Round "9"]
[White "Rossetto, Hector Decio"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "A36"]
[EventDate "1959.03.23"]
[PlyCount "116"]

1. c4 g6 2. Nc3 Bg7 3. g3 Nf6 4. Bg2 O-O 5. d3 c5 6. a3 Nc6 7. Rb1 a5 8. Nh3 b6 9. O-O Bb7 10. Nf4 e6 11. e3 Qb8 12. d4 Ne7 13. d5 exd5 14. Nfxd5 Nexd5 15. cxd5 d6 16. Re1 Ba6 17. a4 b5 18. axb5 Bxb5 19. Nxb5 Qxb5 20. Bf1 Qb7 21. e4 Rfe8 22. Bg2 Nd7 23. Bd2 a4 24. Bc3 Bxc3 25. bxc3 Qa7 26. c4 a3 27. f4 Qa5 28. Bh3 Nb6 29. Qc1 a2 30. Ra1 Qa3 31. e5 Qxc1 32. Rexc1 dxe5 33. fxe5 Rxe5 34. Rc2 Re4 35. Bf1 Rd4 36. Kf2 Kg7 37. h4 Ra4 38. Raxa2 Rxa2 39. Rxa2 Nxc4 40. Bxc4 Rxc4 41. Ra6 Rd4 42. d6 Kf6 43. Kf3 Ke6 44. Rc6 Rc4 45. Rc7 h5 46. d7 Ke7 47. d8=Q+ Kxd8 48. Rxf7 Rg4 49. Kf2 c4 50. Ra7 c3 51. Ra2 Rc4 52. Rc2 Ke7 53. Ke2 Ke6 54. Kd1 Kf5 55. Rf2+ Kg4 56. Rf6 c2+ 57. Kc1 Kxg3 58. Rxg6+ Kxh4 0-1

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.02"]
[Round "9"]
[White "Sanchez, Luis Augusto"]
[Black "Pachman, Ludek"]
[Result "1/2-1/2"]
[ECO "A34"]
[EventDate "1959.03.23"]
[PlyCount "65"]

1. Nf3 c5 2. c4 Nf6 3. Nc3 d5 4. cxd5 Nxd5 5. g3 Nc6 6. Bg2 Nc7 7. O-O e5 8. d3 Be7 9. Be3 O-O 10. Rc1 Be6 11. Nd2 Qe8 12. Nc4 f6 13. Qa4 b5 14. Nxb5 Nxb5 15. Qxb5 Nd4 16. Qxe8 Nxe2+ 17. Kh1 Raxe8 18. Rc2 Nd4 19. Bxd4 cxd4 20. a3 Rc8 21. f4 exf4 22. Rxf4 Rfe8 23. b4 Kf8 24. Bf3 a5 25. Kg2 axb4 26. axb4 Bxb4 27. Rxd4 Bc5 28. Re4 Bf5 29. Rxe8+ Rxe8 30. Nd2 Bb4 31. Be4 Bd7 32. Nf3 f5 33. Bd5 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.02"]
[Round "9"]
[White "Wexler, Bernardo"]
[Black "Shocron, Ruben"]
[Result "1/2-1/2"]
[ECO "A03"]
[EventDate "1959.03.23"]
[PlyCount "87"]

1. f4 d5 2. Nf3 c5 3. e3 Nf6 4. b3 g6 5. Bb5+ Nbd7 6. Bb2 Bg7 7. O-O O-O 8. a4 a6 9. Be2 b6 10. Qe1 Bb7 11. d3 Rc8 12. Nbd2 e6 13. c4 Ng4 14. Bxg7 Kxg7 15. Bd1 Qf6 16. Rc1 d4 17. Nxd4 Nxe3 18. Qxe3 cxd4 19. Qg3 a5 20. Bf3 Bxf3 21. Rxf3 Nc5 22. Ne4 Qe7 23. f5 Nxe4 24. dxe4 f6 25. e5 Rc5 26. fxg6 Rxe5 27. Qh4 hxg6 28. Qxd4 Qc5 29. Qxc5 Rxc5 30. Rd1 Rc6 31. Rd7+ Rf7 32. Rfd3 Rxd7 33. Rxd7+ Kh6 34. Kf2 Kg5 35. Ke3 Kf5 36. h3 e5 37. g4+ Ke6 38. Rg7 g5 39. Kd3 Rd6+ 40. Ke2 e4 41. Rc7 Ke5 42. c5 bxc5 43. Rxc5+ Rd5 44. Rb5 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.03"]
[Round "10"]
[White "Letelier Martner, Rene"]
[Black "Emma, Jaime"]
[Result "1-0"]
[ECO "A25"]
[EventDate "1959.03.23"]
[PlyCount "141"]

1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 d6 6. Nge2 Be6 7. d4 exd4 8. Nxd4 Bd7 9. O-O Nge7 10. Nde2 O-O 11. b3 Qc8 12. Bb2 Bh3 13. Rb1 Bxg2 14. Kxg2 Re8 15. Re1 Qd7 16. h3 Rad8 17. Nd5 Bxb2 18. Rxb2 Kg7 19. Nef4 Ng8 20. Rd2 Ne5 21. Qc2 f6 22. e4 Qf7 23. Ne3 Nd7 24. Nfd5 Nc5 25. Nc3 Nh6 26. Rde2 c6 27. Ng4 Nxg4 28. hxg4 Qd7 29. f3 Rh8 30. Rh1 Ne6 31. Ree1 Ng5 32. Qd1 Nf7 33. Qd4 Ne5 34. Ne2 d5 35. exd5 cxd5 36. g5 Qf5 37. gxf6+ Kf7 38. Nf4 Nc6 39. Qc5 dxc4 40. Re7+ Kxf6 41. Re6+ Kf7 42. Qxc4 Rd4 43. Re5+ Rxc4 44. Rxf5+ gxf5 45. bxc4 Ne5 46. c5 Nd7 47. Nd3 Nf6 48. Rb1 Rb8 49. c6 b6 50. Rb5 Rc8 51. Rxf5 Ke6 52. Re5+ Kd6 53. Rf5 Ke6 54. Re5+ Kd6 55. Re2 Rxc6 56. g4 Rc7 57. Nf4 Nd5 58. Nxd5 Kxd5 59. f4 Kd6 60. Kf3 b5 61. f5 a5 62. Kf4 b4 63. Re6+ Kc5 64. Re5+ Kb6 65. f6 a4 66. Re6+ Kc5 67. Re7 Rc8 68. f7 Rf8 69. Ke5 b3 70. axb3 axb3 71. Kf6 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.03"]
[Round "10"]
[White "Najdorf, Miguel"]
[Black "Wexler, Bernardo"]
[Result "1/2-1/2"]
[ECO "E59"]
[EventDate "1959.03.23"]
[PlyCount "52"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O Nc6 8. a3 Bxc3 9. bxc3 dxc4 10. Bxc4 Qc7 11. Ba2 e5 12. h3 e4 13. Nh2 Bf5 14. Bb2 Rad8 15. Qe2 Rd7 16. Qb5 Ne7 17. a4 Rc8 18. Ba3 b6 19. c4 Rd6 20. Rfd1 Ne8 21. dxc5 bxc5 22. Rxd6 Nxd6 23. Qb2 Be6 24. Qc3 Qc6 25. Bb3 f6 26. Nf1 Ng6 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.03"]
[Round "10"]
[White "Pilnik, Herman"]
[Black "Fischer, Robert James"]
[Result "0-1"]
[ECO "B92"]
[EventDate "1959.03.23"]
[PlyCount "80"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. O-O O-O 9. Be3 Be6 10. f3 Qc7 11. Qe1 Nbd7 12. Rd1 b5 13. Rd2 Nb6 14. Qf2 Rab8 15. Bxb6 Rxb6 16. Nd5 Nxd5 17. exd5 Bd7 18. f4 Bf6 19. c3 Rbb8 20. fxe5 Bxe5 21. Nd4 g6 22. a3 a5 23. Kh1 b4 24. cxb4 axb4 25. Rc2 Qb6 26. Nc6 bxa3 27. Qxb6 Rxb6 28. bxa3 Ra8 29. Nxe5 dxe5 30. Rc3 Rb2 31. Rc7 Bf5 32. g4 Be4+ 33. Bf3 Bd3 34. d6 Rd8 35. Re1 Rxd6 36. Rxe5 Rf6 37. Re3 Rxf3 38. Rxf3 Be4 39. Rcxf7 Rf2 40. Rf8+ Kg7 0-1

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.03"]
[Round "10"]
[White "Redolfi, Rodolfo Argentino"]
[Black "Ivkov, Borislav"]
[Result "0-1"]
[ECO "B66"]
[EventDate "1959.03.23"]
[PlyCount "74"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 a6 8. O-O-O h6 9. Bf4 Bd7 10. Nxc6 Bxc6 11. f3 e5 12. Be3 b5 13. Nd5 Bxd5 14. exd5 Be7 15. Kb1 Nd7 16. g3 Bg5 17. f4 Bf6 18. Qf2 Rb8 19. Bh3 Nb6 20. Rhe1 Nc4 21. fxe5 Bxe5 22. Bc1 O-O 23. Bf1 Qa5 24. Bd3 Qb4 25. Bxc4 bxc4 26. Rxe5 dxe5 27. d6 Rfd8 28. Qe2 Rxd6 29. Rxd6 Qxd6 30. Qxc4 Re8 31. a4 Re6 32. b4 Qd4 33. Qb3 Rc6 34. Be3 Qd1+ 35. Kb2 Rf6 36. Bc1 Rf3 37. Qa2 Qd4+ 0-1

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.03"]
[Round "10"]
[White "Sanguineti, Raul"]
[Black "Rossetto, Hector Decio"]
[Result "1/2-1/2"]
[ECO "B43"]
[EventDate "1959.03.23"]
[PlyCount "48"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Bd3 Bc5 7. Be3 Nf6 8. O-O d6 9. Qf3 Nc6 10. Nce2 O-O 11. Qg3 Nxd4 12. Bxd4 Bxd4 13. Nxd4 Qb6 14. Nb3 e5 15. Rfe1 Be6 16. Rad1 Rac8 17. Qe3 Qc7 18. c3 b5 19. Nc1 Rcd8 20. a3 Nd7 21. Ne2 Nb6 22. Ng3 Nc4 23. Qc1 Qc5 24. h3 a5 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.03"]
[Round "10"]
[White "Shocron, Ruben"]
[Black "Bolbochan, Jacobo"]
[Result "1/2-1/2"]
[ECO "B26"]
[EventDate "1959.03.23"]
[PlyCount "80"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Be3 e5 7. Qd2 Be6 8. Nge2 h5 9. h3 Nd4 10. Ng1 Qa5 11. Nf3 Nxf3+ 12. Bxf3 Ne7 13. Bg2 Nc6 14. O-O Nd4 15. Kh2 O-O-O 16. a3 Qc7 17. b4 Kb8 18. Rab1 c4 19. b5 Qe7 20. Nd1 d5 21. Bxd4 exd4 22. exd5 Bxd5 23. Bxd5 Rxd5 24. dxc4 Re5 25. Qxd4 h4 26. Rb3 hxg3+ 27. Rxg3 Rh4 28. Qd3 Bh6 29. Ne3 Bf4 30. Nd5 Bxg3+ 31. fxg3 Re2+ 32. Kg1 Qc5+ 33. Ne3 Qxe3+ 34. Qxe3 Rxe3 35. gxh4 Rxa3 36. Rxf7 Rxh3 37. Rf4 Rc3 38. Kf2 Rxc2+ 39. Kf3 Kc7 40. Re4 Kd6 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.03"]
[Round "10"]
[White "Souza Mendes, Joao"]
[Black "Sanchez, Luis Augusto"]
[Result "0-1"]
[ECO "E14"]
[EventDate "1959.03.23"]
[PlyCount "108"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 Be7 5. e3 O-O 6. b3 c5 7. Bb2 cxd4 8. exd4 b6 9. Bd3 Bb7 10. O-O Nc6 11. Qe2 dxc4 12. bxc4 Na5 13. Ne5 Rc8 14. Rad1 Ba6 15. Nb5 Bxb5 16. cxb5 Qd5 17. Bc1 h6 18. Bb1 Nc4 19. Nc6 Bd6 20. a4 Na5 21. Ne5 Rfd8 22. Rd3 Qe4 23. Qd1 Bxe5 24. dxe5 Rxd3 25. Qxd3 Qxe5 26. Bd2 Qd5 27. Qe2 Nb3 28. Be3 Rd8 29. Bc2 e5 30. Bxb3 Qxb3 31. a5 Nd5 32. Rd1 Re8 33. axb6 axb6 34. Bd2 Re6 35. Rc1 e4 36. g3 e3 37. fxe3 Nxe3 38. Qf3 Qd5 39. Rc8+ Kh7 40. Qe2 Nc4 41. Qxc4 Qxd2 42. Qc2+ Qxc2 43. Rxc2 Re1+ 44. Kg2 Rb1 45. Rf2 Kg6 46. g4 Rxb5 47. Kg3 h5 48. gxh5+ Rxh5 49. Rb2 b5 50. h4 Rc5 51. Rb3 Kf5 52. Rf3+ Ke6 53. Ra3 Rc7 54. Rb3 Rb7 0-1

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.04"]
[Round "11"]
[White "Bolbochan, Jacobo"]
[Black "Najdorf, Miguel"]
[Result "0-1"]
[ECO "A16"]
[EventDate "1959.03.23"]
[PlyCount "72"]

1. c4 g6 2. Nc3 Bg7 3. g3 Nf6 4. Bg2 O-O 5. d3 d6 6. Bd2 h6 7. Nf3 e5 8. O-O Nh5 9. Ne1 f5 10. e3 Kh7 11. Nc2 a5 12. Rb1 c6 13. a3 Be6 14. Re1 d5 15. cxd5 cxd5 16. b4 axb4 17. Rxb4 Rf7 18. Qb1 Qd7 19. Rb5 e4 20. d4 Nc6 21. Bf1 f4 22. gxf4 Nf6 23. Ne2 Bh3 24. Ng3 Bxf1 25. Rxf1 h5 26. Kh1 h4 27. Ne2 Qg4 28. Ng1 h3 29. Ne1 Rxa3 30. f3 exf3 31. Ngxf3 Ne4 32. Rxd5 Nxd2 33. Rg1 Qxg1+ 34. Kxg1 Nxb1 35. Ng5+ Kg8 36. Nxf7 Kxf7 0-1

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.04"]
[Round "11"]
[White "Emma, Jaime"]
[Black "Redolfi, Rodolfo Argentino"]
[Result "1/2-1/2"]
[ECO "A34"]
[EventDate "1959.03.23"]
[PlyCount "32"]

1. c4 Nf6 2. Nc3 c5 3. g3 d5 4. cxd5 Nxd5 5. Bg2 Nc7 6. Nf3 Nc6 7. Qa4 Bd7 8. Qe4 e6 9. O-O Be7 10. d4 O-O 11. Be3 cxd4 12. Nxd4 Nb4 13. Rfd1 Nbd5 14. Nxd5 Nxd5 15. Nf5 Bc6 16. Nxe7+ Qxe7 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.04"]
[Round "11"]
[White "Ivkov, Borislav"]
[Black "Shocron, Ruben"]
[Result "1-0"]
[ECO "D36"]
[EventDate "1959.03.23"]
[PlyCount "85"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Nf3 c6 6. Bg5 Be7 7. Qc2 Na6 8. e3 Nb4 9. Qd1 Bf5 10. Rc1 Qa5 11. Bxf6 Bxf6 12. Qd2 O-O 13. a3 Na6 14. Bd3 Bxd3 15. Qxd3 Rfe8 16. O-O Rad8 17. Rfd1 Re6 18. Rc2 g6 19. Ne2 Nc7 20. b4 Qa4 21. Ra1 Nb5 22. Nc3 Nxc3 23. Rxc3 a5 24. Rb1 b5 25. g3 Ra8 26. h4 Ra6 27. Kg2 axb4 28. axb4 Be7 29. Rcb3 Bd6 30. Qc3 Qa2 31. R3b2 Qa3 32. Qd2 Ra8 33. Rc2 Ra6 34. Ne1 Ra8 35. Nd3 Be7 36. Ne5 Ra6 37. Rbb2 Rb6 38. Nd3 Qa8 39. Qc1 Ra6 40. Nf4 Rf6 41. Nxd5 c5 42. e4 Rfe6 43. bxc5 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.04"]
[Round "11"]
[White "Pachman, Ludek"]
[Black "Souza Mendes, Joao"]
[Result "1-0"]
[ECO "E95"]
[EventDate "1959.03.23"]
[PlyCount "63"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Nf3 Nbd7 7. O-O e5 8. Re1 c6 9. Bf1 Qb6 10. d5 cxd5 11. cxd5 Ng4 12. Qc2 f5 13. h3 fxe4 14. Nxe4 Ngf6 15. Be3 Qd8 16. Nxd6 Nb6 17. Bc5 Nfxd5 18. Qb3 Be6 19. Nxb7 Qc7 20. Ng5 Rfe8 21. Nxe6 Rxe6 22. Bxb6 Qxb7 23. Bc4 Nxb6 24. Bxe6+ Kh8 25. Rad1 Qe7 26. Bd5 Rf8 27. Be4 Qf6 28. Re2 Rc8 29. Rc2 Rxc2 30. Qxc2 Qe7 31. a4 Bf8 32. Qc6 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.04"]
[Round "11"]
[White "Rossetto, Hector Decio"]
[Black "Pilnik, Herman"]
[Result "1-0"]
[ECO "A16"]
[EventDate "1959.03.23"]
[PlyCount "139"]

1. c4 Nf6 2. Nc3 d6 3. g3 g6 4. Bg2 Bg7 5. d3 O-O 6. Rb1 c6 7. Nf3 d5 8. cxd5 cxd5 9. O-O Nc6 10. Bg5 d4 11. Bxf6 exf6 12. Na4 Re8 13. a3 f5 14. Nc5 Rb8 15. Rc1 b6 16. Nb3 Bb7 17. Rc4 Qd7 18. Qd2 Rbc8 19. Rfc1 a5 20. Qd1 Ba6 21. R4c2 a4 22. Nbd2 Na5 23. Rxc8 Rxc8 24. Rxc8+ Bxc8 25. Qc2 Ba6 26. Nc4 Bxc4 27. dxc4 Nb3 28. Nd2 Nc5 29. Bd5 Qe7 30. Kf1 Qd7 31. Nf3 Qd6 32. Qd2 Nb3 33. Qc2 Bh6 34. Qd3 Qf6 35. Kg2 Bc1 36. h4 h6 37. Qc2 d3 38. Qxd3 Bxb2 39. Qe3 Kg7 40. Qe8 Nc5 41. e3 Bc3 42. Nd4 f4 43. Ne2 fxg3 44. Nxg3 Be1 45. f4 Bxg3 46. Kxg3 g5 47. hxg5 hxg5 48. Qc8 Qc3 49. Kf3 Qd3 50. fxg5 Qf1+ 51. Kg3 Nd3 52. Qc7 Qf2+ 53. Kg4 Qg1+ 54. Kh4 Qf2+ 55. Qg3 Qxg3+ 56. Kxg3 f5 57. e4 Kg6 58. Kh4 f4 59. Kg4 f3 60. Kxf3 Kxg5 61. Ke3 Ne5 62. Kd4 Kf4 63. Kc3 Ke3 64. Kb4 Kd4 65. Kb5 Nd7 66. Kc6 Nc5 67. Kxb6 Nxe4 68. Bxe4 Kxc4 69. Bc2 Kc3 70. Kb5 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.04"]
[Round "11"]
[White "Sanchez, Luis Augusto"]
[Black "Letelier Martner, Rene"]
[Result "1/2-1/2"]
[ECO "C97"]
[EventDate "1959.03.23"]
[PlyCount "73"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 Na5 9. Bc2 c5 10. d4 Qc7 11. Nbd2 O-O 12. h3 Re8 13. Nf1 Bd7 14. Ne3 Bf8 15. dxe5 dxe5 16. Nh2 Be6 17. Nhg4 Nd7 18. Qf3 Nc4 19. Nxc4 Bxc4 20. Qg3 Be6 21. f4 Bxg4 22. hxg4 exf4 23. Bxf4 Ne5 24. Rad1 Re6 25. Rd5 Rae8 26. Red1 c4 27. Kh1 f6 28. Qh3 Qf7 29. a4 Nd3 30. R5xd3 cxd3 31. Bb3 bxa4 32. Bd5 Kh8 33. Rxd3 Qg6 34. Bxe6 Rxe6 35. Rd8 Kg8 36. Qd3 Qxg4 37. Bd6 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.04"]
[Round "11"]
[White "Wexler, Bernardo"]
[Black "Sanguineti, Raul"]
[Result "1/2-1/2"]
[ECO "D02"]
[EventDate "1959.03.23"]
[PlyCount "37"]

1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O cxd4 6. Nxd4 Bc5 7. Nxc6 bxc6 8. c4 Ne7 9. Qc2 Bb6 10. b3 O-O 11. Bb2 Bb7 12. Nd2 a5 13. Rad1 Qb8 14. e4 Qa7 15. Nf3 Rfd8 16. Qc3 f6 17. Bh3 Bc8 18. exd5 cxd5 19. cxd5 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.05"]
[Round "12"]
[White "Fischer, Robert James"]
[Black "Rossetto, Hector Decio"]
[Result "1-0"]
[ECO "B41"]
[EventDate "1959.03.23"]
[PlyCount "73"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. c4 Qc7 6. Nc3 Nf6 7. Bd3 Nc6 8. Be3 Nxd4 9. Bxd4 Bc5 10. Bc2 d6 11. O-O Bd7 12. Na4 Bxd4 13. Qxd4 Rd8 14. Rfd1 O-O 15. Rac1 Qa5 16. Qb6 Qxb6 17. Nxb6 Bc6 18. f3 Nd7 19. Nd5 Bxd5 20. exd5 e5 21. b4 g6 22. Ba4 b6 23. Rd3 f5 24. Ra3 Nb8 25. c5 bxc5 26. bxc5 dxc5 27. Rxc5 Kg7 28. Rb3 Rf7 29. d6 Nd7 30. Rc7 Nf8 31. Rbb7 Rxc7 32. dxc7 Rc8 33. Bb3 a5 34. a4 h6 35. h3 g5 36. g4 fxg4 37. hxg4 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.05"]
[Round "12"]
[White "Letelier Martner, Rene"]
[Black "Pachman, Ludek"]
[Result "0-1"]
[ECO "E60"]
[EventDate "1959.03.23"]
[PlyCount "76"]

1. d4 Nf6 2. c4 g6 3. f3 Bg7 4. e4 O-O 5. Be3 d6 6. Qd2 e5 7. Ne2 Nbd7 8. Na3 a6 9. g4 exd4 10. Nxd4 Ne5 11. Be2 Bxg4 12. fxg4 Nxe4 13. Qc2 Qh4+ 14. Kd1 Nxg4 15. Bxg4 Qxg4+ 16. Qe2 Qxe2+ 17. Kxe2 c5 18. Ndc2 Bxb2 19. Rab1 Nc3+ 20. Kf3 Nxb1 21. Rxb1 Be5 22. h3 Kg7 23. Rb6 f5 24. Nb1 Rf7 25. a4 Rb8 26. Rb3 Kf6 27. h4 f4 28. Bg1 Kf5 29. Nd2 h6 30. Ne4 g5 31. Nf2 Rg7 32. Ng4 h5 33. Nh6+ Kg6 34. hxg5 Kxg5 35. Ne3 fxe3 36. Bxe3+ Kf6 37. Ke4 Rh8 38. Kd5 Rg3 0-1

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.05"]
[Round "12"]
[White "Najdorf, Miguel"]
[Black "Ivkov, Borislav"]
[Result "1-0"]
[ECO "A90"]
[EventDate "1959.03.23"]
[PlyCount "83"]

1. d4 e6 2. c4 f5 3. g3 Nf6 4. Bg2 Bb4+ 5. Nd2 O-O 6. Ngf3 d6 7. O-O Bxd2 8. Qxd2 a5 9. b3 Qe8 10. Ba3 Qh5 11. Ng5 h6 12. Nh3 Qe8 13. Nf4 Qf7 14. f3 Nc6 15. d5 Nd8 16. dxe6 Nxe6 17. e4 Nxf4 18. Qxf4 fxe4 19. fxe4 Qh5 20. c5 Bh3 21. Bf3 Qe5 22. Qxe5 dxe5 23. Rfd1 Rfd8 24. Bb2 Rxd1+ 25. Rxd1 Rf8 26. Be2 Ng4 27. Re1 Re8 28. Rd1 Rf8 29. Rc1 c6 30. Bc3 h5 31. Be1 Nf6 32. Rc4 Ra8 33. Ra4 Bg4 34. Kf2 Kf7 35. Bf1 Ke7 36. Ke3 Nd7 37. Bxa5 Rf8 38. Bg2 Nxc5 39. Bb4 Kd6 40. Ra7 b6 41. Rb7 Bd7 42. Rxb6 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.05"]
[Round "12"]
[White "Pilnik, Herman"]
[Black "Wexler, Bernardo"]
[Result "0-1"]
[ECO "B97"]
[EventDate "1959.03.23"]
[PlyCount "126"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Qb6 8. Nb3 Qe3+ 9. Qe2 Qxe2+ 10. Bxe2 Be7 11. O-O-O h6 12. Bxf6 gxf6 13. Rd3 Nc6 14. Rh3 b5 15. a3 Bd7 16. Rh5 Bd8 17. Rd1 Bc7 18. Kb1 Ke7 19. Rd3 Rag8 20. g4 Kf8 21. Nd2 Kg7 22. Nf3 Rb8 23. b4 Ne7 24. f5 e5 25. Nd2 Bc6 26. Bf3 a5 27. Nd5 Bxd5 28. exd5 axb4 29. axb4 Ra8 30. Rh3 Ra4 31. Rb3 Rha8 32. Kc1 Bb6 33. Be4 Bd4 34. Nb1 Ra2 35. Nc3 Ra1+ 36. Kd2 Rg1 37. Nxb5 Raa1 38. Bf3 Bb6 39. Kd3 Nxd5 40. Rg3 Nf4+ 41. Kc4 Rgc1 42. Nxd6 Rxc2+ 43. Kb5 Bf2 44. Be4 Rd2 45. Nc4 Rd8 46. Ra3 Re1 47. Bb7 Bxg3 48. hxg3 Ne2 49. Kc5 Rc1 50. b5 Nc3 51. b6 Rd4 52. Ba6 Ne4+ 53. Kb4 Rb1+ 54. Ka5 Nc5 55. Bb5 Rd8 56. Bc6 e4 57. Rc3 Rd3 58. Rxd3 exd3 59. Bf3 Kf8 60. Nd2 Nb3+ 61. Nxb3 Rxb3 62. Ka6 Ke7 63. Bd5 Ra3+ 0-1

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.05"]
[Round "12"]
[White "Redolfi, Rodolfo Argentino"]
[Black "Sanchez, Luis Augusto"]
[Result "1-0"]
[ECO "C45"]
[EventDate "1959.03.23"]
[PlyCount "39"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Be3 Qf6 6. c3 d6 7. Be2 Nge7 8. O-O Bb6 9. Nb5 Kd8 10. Bxb6 axb6 11. f4 Bd7 12. e5 dxe5 13. Bg4 Nb8 14. N1a3 exf4 15. Qd2 Kc8 16. Bxd7+ Nxd7 17. Rxf4 Qg5 18. Nd6+ Kb8 19. Nxf7 Qd5 20. Rd1 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.05"]
[Round "12"]
[White "Sanguineti, Raul"]
[Black "Bolbochan, Jacobo"]
[Result "1/2-1/2"]
[ECO "E80"]
[EventDate "1959.03.23"]
[PlyCount "98"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 e5 6. dxe5 dxe5 7. Qxd8+ Kxd8 8. Bg5 h6 9. Bh4 Nc6 10. Nd5 g5 11. Bf2 Be6 12. Ne2 Kc8 13. O-O-O b6 14. Ng3 Kb7 15. Bd3 Nd7 16. Nf5 Bf8 17. h4 Bc5 18. Be1 Rag8 19. Bd2 Nd4 20. b4 Nxf5 21. exf5 Bxd5 22. cxd5 Be7 23. Bb5 Nb8 24. hxg5 hxg5 25. g4 a6 26. Ba4 b5 27. Bb3 Rxh1 28. Rxh1 Rg7 29. Rh8 f6 30. Kc2 Nd7 31. Kd3 Bd6 32. Ke4 Nb6 33. a3 Rf7 34. Be3 Rf8 35. Rh7 Rd8 36. Bc5 Rd7 37. Rh8 Rf7 38. Be3 Rg7 39. Rh6 Rf7 40. Bd2 Kb8 41. Bc3 Nd7 42. a4 a5 43. Bd2 axb4 44. Be3 Kb7 45. axb5 Rf8 46. Rh7 Nb6 47. Rh6 Rf7 48. Kd3 Rf8 49. Bxb6 Kxb6 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.05"]
[Round "12"]
[White "Shocron, Ruben"]
[Black "Emma, Jaime"]
[Result "0-1"]
[ECO "B64"]
[EventDate "1959.03.23"]
[PlyCount "73"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 Be7 8. O-O-O O-O 9. f4 h6 10. Bxf6 Bxf6 11. Nxc6 bxc6 12. Qxd6 Qb6 13. Re1 Bxc3 14. bxc3 Rb8 15. Bd3 Rd8 16. Qa3 e5 17. fxe5 Be6 18. Rhf1 c5 19. c4 Bxc4 20. Rf3 Be6 21. c4 Bg4 22. Rf2 Rd4 23. Rc2 Be6 24. Rd1 Qd8 25. Rdd2 Qg5 26. Be2 Rxd2 27. Rxd2 Qxe5 28. Bd3 Rb4 29. Kd1 Qa1+ 30. Ke2 Bg4+ 31. Kf2 Qd4+ 32. Kf1 Rb6 33. e5 Qxe5 34. Qa5 Qe3 35. Be2 Rb1+ 36. Bd1 Rxd1+ 37. Rxd1 0-1

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.07"]
[Round "13"]
[White "Bolbochan, Jacobo"]
[Black "Pilnik, Herman"]
[Result "1/2-1/2"]
[ECO "A42"]
[EventDate "1959.03.23"]
[PlyCount "96"]

1. d4 Nf6 2. c4 d6 3. Nc3 g6 4. e4 Bg7 5. Be2 e5 6. d5 Nbd7 7. Bg5 a5 8. Nf3 h6 9. Bh4 g5 10. Bg3 Nh5 11. O-O Nf4 12. Ne1 h5 13. f3 b6 14. Nd3 Nf8 15. Be1 N8g6 16. Nf2 g4 17. fxg4 hxg4 18. Bxg4 Qg5 19. g3 Qh6 20. h3 Qg5 21. Qf3 Bxg4 22. Qxg4 Nxh3+ 23. Kg2 Bf6 24. Qxg5 Nxg5 25. Ng4 Bd8 26. Bd2 Nh7 27. Rh1 Be7 28. Raf1 Rd8 29. Nh6 f6 30. Nf5 Kd7 31. Rh6 Rdg8 32. Rfh1 Nhf8 33. Rxh8 Rxh8 34. Rxh8 Nxh8 35. Kf3 Nf7 36. a3 Bd8 37. b4 axb4 38. axb4 c6 39. dxc6+ Kxc6 40. Be3 Ne6 41. b5+ Kd7 42. Ke2 Nc5 43. Bxc5 dxc5 44. Kf3 Ng5+ 45. Ke3 Ne6 46. Nd5 Nd4 47. Ng7 Nb3 48. Kd3 Nd4 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.07"]
[Round "13"]
[White "Emma, Jaime"]
[Black "Najdorf, Miguel"]
[Result "1/2-1/2"]
[ECO "D71"]
[EventDate "1959.03.23"]
[PlyCount "38"]

1. c4 g6 2. Nc3 Bg7 3. g3 Nf6 4. Bg2 O-O 5. e3 c6 6. Nge2 d5 7. cxd5 cxd5 8. d4 Nc6 9. Nf4 e6 10. b3 b5 11. O-O a6 12. Bb2 Bb7 13. Nd3 Nd7 14. Qd2 Re8 15. Rfc1 h5 16. Ne2 Rc8 17. Rc2 h4 18. Rac1 hxg3 19. hxg3 Qe7 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.07"]
[Round "13"]
[White "Ivkov, Borislav"]
[Black "Sanguineti, Raul"]
[Result "1/2-1/2"]
[ECO "E16"]
[EventDate "1959.03.23"]
[PlyCount "84"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Bb4+ 6. Bd2 Be7 7. O-O O-O 8. Nc3 d5 9. Ne5 c6 10. Bf4 Nfd7 11. Nxd7 Nxd7 12. Qa4 a6 13. cxd5 cxd5 14. Rfc1 Rc8 15. Qb3 b5 16. a4 b4 17. Na2 Qb6 18. Qd3 Bf6 19. Be3 a5 20. Rxc8 Rxc8 21. Rc1 Nb8 22. Qb5 Qxb5 23. axb5 Nd7 24. b3 Kf8 25. Ra1 Bd8 26. Nc1 Rc3 27. Kf1 Bb6 28. Ke1 Ke7 29. Kd1 f6 30. Bd2 Rc8 31. Nd3 Kd6 32. e3 e5 33. Bh3 Rb8 34. Bxd7 Kxd7 35. dxe5 fxe5 36. Nxe5+ Kd6 37. f4 Rc8 38. Ra2 Rc5 39. Nd3 Rxb5 40. Kc2 Bc8 41. Kd1 Bg4+ 42. Ke1 Bf5 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.07"]
[Round "13"]
[White "Pachman, Ludek"]
[Black "Redolfi, Rodolfo Argentino"]
[Result "1-0"]
[ECO "B03"]
[EventDate "1959.03.23"]
[PlyCount "121"]

1. c4 Nf6 2. Nc3 c5 3. Nf3 Nc6 4. e3 d6 5. d4 cxd4 6. exd4 g6 7. d5 Nb8 8. Be2 Bg7 9. O-O O-O 10. Nd4 Nbd7 11. Be3 Nb6 12. Rc1 Bd7 13. b3 a6 14. f4 e6 15. dxe6 fxe6 16. Bf3 Rb8 17. Qd2 Nc8 18. Rfd1 Qe8 19. Re1 Qf7 20. Ne4 Nxe4 21. Bxe4 Ne7 22. Nf3 Nf5 23. Bb6 Bc6 24. Ng5 Qd7 25. Bf2 Rfe8 26. Rcd1 Bf8 27. g4 Nh6 28. h3 Nf7 29. Bxc6 bxc6 30. Ne4 Qd8 31. g5 Be7 32. h4 Qc8 33. Qe2 e5 34. fxe5 Nxe5 35. Bg3 Qe6 36. Kg2 Rf8 37. Nxd6 Bxd6 38. Rxd6 Qxd6 39. Bxe5 Qe6 40. Bxb8 Qxe2+ 41. Rxe2 Rxb8 42. Re5 Kf7 43. Kf3 Rd8 44. Ke4 Rd2 45. Ra5 Rh2 46. Rxa6 Rxh4+ 47. Kf3 Rh3+ 48. Kg4 Rh2 49. Rxc6 Rxa2 50. b4 Ke7 51. c5 Rb2 52. Rb6 Kd7 53. Kf4 Kc7 54. b5 Rf2+ 55. Ke4 Rf5 56. Rc6+ Kb7 57. Kd4 Rf4+ 58. Ke5 Rb4 59. Kf6 Rf4+ 60. Ke7 Rc4 61. Kd7 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.07"]
[Round "13"]
[White "Sanchez, Luis Augusto"]
[Black "Shocron, Ruben"]
[Result "1-0"]
[ECO "C90"]
[EventDate "1959.03.23"]
[PlyCount "71"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. d3 d6 9. c3 Na5 10. Bc2 c6 11. Nbd2 Qc7 12. Nf1 Re8 13. a4 Bd7 14. Ng3 g6 15. Bg5 Nb7 16. d4 Be6 17. h3 c5 18. Bh6 Rac8 19. axb5 axb5 20. d5 Bd7 21. Qd2 Ra8 22. Nf5 Bxf5 23. exf5 c4 24. Rad1 Kh8 25. Ng5 Bf8 26. Bxf8 Rxf8 27. fxg6 hxg6 28. Ne4 Ng8 29. f4 f6 30. fxe5 dxe5 31. Qf2 Rad8 32. d6 Qf7 33. Rf1 Kg7 34. Qg3 Rd7 35. Ng5 Qe8 36. Ne6+ 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.07"]
[Round "13"]
[White "Souza Mendes, Joao"]
[Black "Letelier Martner, Rene"]
[Result "0-1"]
[ECO "D70"]
[EventDate "1959.03.23"]
[PlyCount "54"]

1. d4 Nf6 2. c4 d5 3. cxd5 Nxd5 4. Nf3 g6 5. e4 Nb6 6. Nc3 Bg7 7. Be3 Bg4 8. h3 Bxf3 9. gxf3 O-O 10. Qd2 Nc6 11. Rd1 e5 12. d5 Nd4 13. Bxd4 exd4 14. Nb5 Re8 15. Be2 Be5 16. Nxd4 Qf6 17. Kf1 c6 18. dxc6 Rad8 19. cxb7 Rxd4 20. Qa5 Rxd1+ 21. Bxd1 Bb8 22. h4 Qxb2 23. Bb3 h5 24. Qg5 Kg7 25. Kg2 Qe5 26. Qc1 Re7 27. Qc6 Rc7 0-1

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.07"]
[Round "13"]
[White "Wexler, Bernardo"]
[Black "Fischer, Robert James"]
[Result "0-1"]
[ECO "E61"]
[EventDate "1959.03.23"]
[PlyCount "76"]

1. c4 Nf6 2. d4 g6 3. Nc3 Bg7 4. Bg5 d6 5. Nf3 O-O 6. e3 c5 7. Be2 h6 8. Bh4 g5 9. Bg3 Nh5 10. O-O Nc6 11. d5 Na5 12. Rc1 a6 13. Nd2 Nxg3 14. fxg3 e6 15. Qc2 exd5 16. Nxd5 Be6 17. Bd3 b5 18. b3 Rb8 19. Rb1 Nc6 20. Be4 Kh8 21. cxb5 axb5 22. a4 f5 23. Nf4 gxf4 24. Bxc6 fxe3 25. Nf3 bxa4 26. Bxa4 Bd5 27. Qe2 Bd4 28. Rbd1 Qf6 29. Nh4 Qe6 30. Nf3 Rb4 31. Kh1 Rxa4 32. bxa4 Bc4 33. Nxd4 cxd4 34. Qb2 e2 35. Qxd4+ Kh7 36. Rfe1 exd1=Q 37. Qxd1 Qf6 38. Qc1 Bd3 0-1

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.08"]
[Round "14"]
[White "Fischer, Robert James"]
[Black "Bolbochan, Jacobo"]
[Result "1-0"]
[ECO "B45"]
[EventDate "1959.03.23"]
[PlyCount "99"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. Bd3 dxe4 10. Nxe4 Nxe4 11. Bxe4 Qxd1+ 12. Kxd1 Bd7 13. Be3 f5 14. Bf3 e5 15. b4 O-O-O 16. Kc1 Nd4 17. Bxd4 exd4 18. Re1 Rhe8 19. Kd2 Bb5 20. Rxe8 Rxe8 21. a4 Bc4 22. Rc1 Kb8 23. c3 dxc3+ 24. Rxc3 Bf7 25. a5 Re7 26. Re3 Rd7+ 27. Rd3 Re7 28. Rd8+ Kc7 29. Rh8 h6 30. Kc3 a6 31. Kd4 Be8 32. Rf8 Bd7 33. h4 Bc8 34. Bd5 Bd7 35. f4 g6 36. Rf6 Be8 37. Be6 Bc6 38. g3 Rg7 39. Ke5 Be8 40. Bd5 h5 41. Rb6 Kc8 42. Be6+ Kc7 43. Kf6 Rh7 44. Bd5 Kc8 45. Re6 Kd8 46. Rd6+ Kc7 47. Rb6 Kc8 48. Bg8 Rc7 49. Be6+ Kb8 50. Rd6 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.08"]
[Round "14"]
[White "Najdorf, Miguel"]
[Black "Sanchez, Luis Augusto"]
[Result "1-0"]
[ECO "A11"]
[EventDate "1959.03.23"]
[PlyCount "139"]

1. c4 Nf6 2. g3 c6 3. Bg2 d5 4. Nf3 g6 5. b3 Bg7 6. Bb2 O-O 7. O-O Nbd7 8. Qc2 Re8 9. Nc3 e5 10. cxd5 Nxd5 11. d3 Qe7 12. Nd2 N7b6 13. Nce4 Bg4 14. Rfe1 Nd7 15. Nc4 Nb4 16. Qd2 a5 17. a3 Nd5 18. f3 Be6 19. Nxa5 f5 20. Nf2 Nc5 21. Rab1 Red8 22. Ba1 Qc7 23. b4 Nd7 24. Rbc1 Ne7 25. f4 Qb6 26. e3 Bf6 27. Qc2 Kg7 28. fxe5 Nxe5 29. d4 Ng4 30. Nxg4 fxg4 31. Kh1 Nf5 32. Qf2 Rf8 33. Rcd1 Kg8 34. e4 Nd6 35. Qc2 Nb5 36. d5 Bxa1 37. Rxa1 Rf2 38. Qd3 cxd5 39. exd5 Bf5 40. Qe3 Qxe3 41. Rxe3 Nd6 42. Rc1 Ra2 43. Bf1 Rf8 44. Kg1 b6 45. Nc4 Rc8 46. Ree1 Nxc4 47. Rxc4 Rxc4 48. Bxc4 Rxa3 49. d6+ Kf8 50. Bb5 Ra7 51. Bc6 Kf7 52. b5 Kf6 53. Re8 Ra1+ 54. Kf2 Rd1 55. Rd8 Kf7 56. d7 g5 57. Ke2 Rd6 58. Rb8 Bxd7 59. Rxb6 Kf6 60. Ra6 Ke5 61. Bxd7 Rxd7 62. Ra4 h5 63. Rb4 Kd5 64. b6 Rb7 65. Ke3 Re7+ 66. Kd3 Rb7 67. Rb5+ Kc6 68. Kc4 Kd7 69. Kd5 Kc8 70. Kc6 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.08"]
[Round "14"]
[White "Pilnik, Herman"]
[Black "Ivkov, Borislav"]
[Result "0-1"]
[ECO "B93"]
[EventDate "1959.03.23"]
[PlyCount "78"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 e5 7. Nf3 Nbd7 8. Bd3 Be7 9. O-O O-O 10. Kh1 b5 11. Qe1 Bb7 12. a3 Re8 13. fxe5 dxe5 14. Bd2 Nc5 15. Rd1 Nxd3 16. cxd3 Qxd3 17. Bh6 Qc4 18. Bxg7 Kxg7 19. Nxe5 Qe6 20. Qg3+ Kh8 21. Qf4 Rad8 22. Nd5 Bxd5 23. exd5 Rxd5 24. Rde1 Bd8 25. Ng6+ hxg6 26. Rxe6 Rxe6 27. g4 g5 28. Qg3 Kg7 29. Qc3 Re2 30. Re1 Rf2 31. h3 Rdd2 32. Qe3 Nd5 33. Qe5+ Bf6 34. Qg3 Bd4 35. Rg1 Nf4 36. Rc1 Rd3 37. Qxd3 Nxd3 38. Rd1 Rf3 39. Kg2 Re3 0-1

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.08"]
[Round "14"]
[White "Redolfi, Rodolfo Argentino"]
[Black "Souza Mendes, Joao"]
[Result "0-1"]
[ECO "B43"]
[EventDate "1959.03.23"]
[PlyCount "124"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. g3 Bb4 7. Nde2 Nf6 8. Bg2 O-O 9. O-O Be7 10. h3 d6 11. Be3 Nc6 12. g4 b5 13. a3 Bb7 14. f4 Na5 15. g5 Nd7 16. b3 f5 17. Qd2 Rac8 18. Rac1 fxe4 19. f5 Ne5 20. fxe6 Nf3+ 21. Bxf3 exf3 22. Nd4 d5 23. Nb1 Qg3+ 24. Kh1 Nc6 25. Qh2 Qxh2+ 26. Kxh2 Nxd4 27. Bxd4 Bxg5 28. c3 Bxc1 29. Rxc1 Rce8 30. Bc5 Rf6 31. e7 Rg6 32. Rg1 Rxg1 33. Kxg1 Kf7 34. Nd2 Rc8 35. b4 d4 36. cxd4 Rc6 37. d5 Rg6+ 38. Kf1 Bxd5 39. Nb1 Rg2 40. Nc3 Bc6 41. Nd1 Rd2 42. Nf2 Re2 43. h4 h6 44. Kg1 g5 45. hxg5 hxg5 46. Kh2 g4 47. Kg3 Bd7 48. Kf4 Rxe7 49. Ne4 Bc6 50. Ng5+ Kg6 51. Kxg4 Re2 52. Nh3 Re4+ 53. Nf4+ Kf6 54. Kxf3 Kf5 55. Nd3 Rxb4+ 56. Ke3 Rb3 57. Kd4 Be4 58. Nf2 Bc2 59. Kd5 a5 60. Kc6 b4 61. axb4 Rxb4 62. Kd5 Rb3 0-1

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.08"]
[Round "14"]
[White "Rossetto, Hector Decio"]
[Black "Wexler, Bernardo"]
[Result "1/2-1/2"]
[ECO "A18"]
[EventDate "1959.03.23"]
[PlyCount "54"]

1. c4 Nf6 2. Nc3 e6 3. e4 d5 4. e5 d4 5. exf6 dxc3 6. bxc3 Qxf6 7. d4 c5 8. Nf3 cxd4 9. cxd4 Bb4+ 10. Bd2 Bxd2+ 11. Qxd2 O-O 12. Be2 Nc6 13. O-O Rd8 14. Rad1 Nxd4 15. Nxd4 e5 16. Bf3 Rxd4 17. Qb4 Qb6 18. Qe7 Be6 19. c5 Qb4 20. Rxd4 exd4 21. Qxb7 Qxb7 22. Bxb7 Rb8 23. c6 Bc8 24. Rb1 Kf8 25. f4 Ke8 26. Rb4 Bxb7 27. Rxb7 Rc8 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.08"]
[Round "14"]
[White "Sanguineti, Raul"]
[Black "Emma, Jaime"]
[Result "1-0"]
[ECO "D41"]
[EventDate "1959.03.23"]
[PlyCount "69"]

1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 Be7 5. O-O O-O 6. d4 c5 7. cxd5 Nxd5 8. Nc3 Nc6 9. Nxd5 exd5 10. Be3 c4 11. b3 cxb3 12. Qxb3 Na5 13. Qd3 Be6 14. Rab1 f6 15. Bd2 Rb8 16. Nh4 Nc4 17. Bf4 Bd6 18. Bxd6 Qxd6 19. e4 Qd7 20. Rfe1 Nb6 21. exd5 Bxd5 22. Qa3 Bxg2 23. Nxg2 Nc4 24. Qb4 Nd6 25. Nf4 Rfe8 26. d5 Re5 27. Rxe5 fxe5 28. Ne6 Rc8 29. Qb2 Qf7 30. Qxe5 Rc2 31. f4 Qd7 32. Rb2 Rc1+ 33. Kg2 b6 34. Re2 h6 35. Nxg7 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.08"]
[Round "14"]
[White "Shocron, Ruben"]
[Black "Pachman, Ludek"]
[Result "0-1"]
[ECO "E32"]
[EventDate "1959.03.23"]
[PlyCount "46"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. Bf4 d6 6. a3 Bxc3+ 7. Qxc3 Nbd7 8. e3 b6 9. Nf3 Bb7 10. Be2 Ne4 11. Qc2 Qe7 12. h3 f5 13. Bh2 e5 14. dxe5 dxe5 15. Rf1 a5 16. O-O-O Nec5 17. b3 f4 18. exf4 exf4 19. Kb2 Rae8 20. Bd3 Nxd3+ 21. Qxd3 Nc5 22. Qc3 Ne4 23. Qd4 c5 0-1

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.09"]
[Round "15"]
[White "Bolbochan, Jacobo"]
[Black "Rossetto, Hector Decio"]
[Result "1/2-1/2"]
[ECO "A16"]
[EventDate "1959.03.23"]
[PlyCount "51"]

1. c4 Nf6 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 O-O 6. Nge2 Ne5 7. d3 d6 8. O-O c5 9. b3 Rb8 10. Bb2 Bg4 11. h3 Bd7 12. d4 Nc6 13. Qd2 a6 14. dxc5 dxc5 15. Na4 Bf5 16. Rfd1 Qc8 17. g4 Rd8 18. Qe1 Be4 19. Rxd8+ Nxd8 20. Bxe4 Nxe4 21. Bxg7 Kxg7 22. f3 b5 23. Nb2 Nd6 24. Qc3+ Kg8 25. Nf4 Qb7 26. Kf2 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.09"]
[Round "15"]
[White "Emma, Jaime"]
[Black "Pilnik, Herman"]
[Result "0-1"]
[ECO "A80"]
[EventDate "1959.03.23"]
[PlyCount "92"]

1. d4 d5 2. Nc3 f5 3. g4 fxg4 4. e4 c6 5. Bg2 dxe4 6. Be3 Nf6 7. Nge2 Bf5 8. Ng3 e6 9. Ncxe4 Nxe4 10. Bxe4 g6 11. Qe2 Be7 12. h3 gxh3 13. Nxf5 exf5 14. Bd3 Qd6 15. Rxh3 Nd7 16. Bg5 Kd8 17. Bxe7+ Qxe7 18. Re3 Re8 19. d5 Qb4+ 20. c3 Rxe3 21. fxe3 Qh4+ 22. Kd2 cxd5 23. Qg2 Rc8 24. Rh1 Qe7 25. Qxd5 Kc7 26. Kc2 Kb8 27. Rd1 Nf6 28. Qf3 Qe5 29. Bf1 Ng4 30. Rd7 Nxe3+ 31. Kc1 Rxc3+ 32. Kb1 Rc6 33. Ba6 Qe4+ 34. Qxe4 fxe4 35. Bxb7 Rc7 36. Rxc7 Kxc7 37. Bxe4 Kd6 38. Kc1 Ke5 39. Bd3 Kd4 40. Be2 h5 41. b4 h4 42. a4 Nd5 43. b5 Nc3 44. a5 Nxe2+ 45. Kd2 Nc3 46. b6 axb6 0-1

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.09"]
[Round "15"]
[White "Ivkov, Borislav"]
[Black "Fischer, Robert James"]
[Result "1/2-1/2"]
[ECO "E87"]
[EventDate "1959.03.23"]
[PlyCount "105"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 e5 6. d5 Nh5 7. Be3 f5 8. Nge2 O-O 9. Qd2 a6 10. O-O-O b5 11. exf5 gxf5 12. Ng3 Nf6 13. Bg5 Qe8 14. h4 b4 15. Nb1 Nh5 16. Nxh5 Qxh5 17. Be2 f4 18. g4 Qf7 19. Bd3 h6 20. Qc2 b3 21. axb3 a5 22. Qe2 hxg5 23. hxg5 Rd8 24. g6 Qe7 25. Nc3 Na6 26. Ne4 Nc5 27. Nxc5 dxc5 28. Rh5 a4 29. bxa4 Rxa4 30. Kb1 Bd7 31. d6 cxd6 32. Be4 Be6 33. Qd3 Qa7 34. Rdh1 Ra1+ 35. Kc2 Qa4+ 36. Qb3 Qxb3+ 37. Kxb3 Rb8+ 38. Kc3 Ra2 39. Rb1 Rb4 40. b3 Ra3 41. Kc2 Ra2+ 42. Kc3 Re2 43. Ra1 Re3+ 44. Kc2 Rexb3 45. Ra8+ Rb8 46. Ra7 Rb2+ 47. Kc1 R2b4 48. Rh7 Bf6 49. g7 Rxc4+ 50. Kd1 Rd4+ 51. Kc1 Rc4+ 52. Kd1 Rd4+ 53. Kc1 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.09"]
[Round "15"]
[White "Letelier Martner, Rene"]
[Black "Redolfi, Rodolfo Argentino"]
[Result "1-0"]
[ECO "E59"]
[EventDate "1959.03.23"]
[PlyCount "97"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Nf3 O-O 6. Bd3 d5 7. O-O Nc6 8. a3 Bxc3 9. bxc3 dxc4 10. Bxc4 Qc7 11. Bb5 Bd7 12. a4 a6 13. Be2 Rfd8 14. Ba3 b6 15. dxc5 bxc5 16. Bxc5 Ne4 17. Bd4 e5 18. Qb1 exd4 19. Qxe4 dxc3 20. Rfc1 Qa5 21. Qc4 Ne5 22. Qxc3 Nxf3+ 23. Bxf3 Qxc3 24. Rxc3 Rac8 25. Rxc8 Rxc8 26. Bb7 Rb8 27. Bxa6 Ra8 28. Bf1 Rxa4 29. Rd1 Be8 30. Rd8 Re4 31. Bb5 Kf8 32. Kf1 Re5 33. Bxe8 Rxe8 34. Rxe8+ Kxe8 35. Ke2 Ke7 36. Kd3 Ke6 37. Ke4 f5+ 38. Kf4 Kf6 39. h4 Ke6 40. f3 Kf6 41. g4 fxg4 42. Kxg4 Ke6 43. Kg5 Ke5 44. h5 Ke6 45. h6 g6 46. f4 Kf7 47. f5 gxf5 48. Kxf5 Ke7 49. Ke5 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.09"]
[Round "15"]
[White "Pachman, Ludek"]
[Black "Najdorf, Miguel"]
[Result "1/2-1/2"]
[ECO "A24"]
[EventDate "1959.03.23"]
[PlyCount "33"]

1. c4 d6 2. Nc3 e5 3. g3 g6 4. Bg2 Bg7 5. e3 Nf6 6. Nge2 O-O 7. O-O Re8 8. Qc2 Nc6 9. a3 Bf5 10. e4 Bg4 11. f3 Bd7 12. d3 Qc8 13. Nd5 Nxd5 14. cxd5 Ne7 15. Be3 c6 16. dxc6 Bxc6 17. Rac1 1/2-1/2

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.09"]
[Round "15"]
[White "Sanchez, Luis Augusto"]
[Black "Sanguineti, Raul"]
[Result "1-0"]
[ECO "A65"]
[EventDate "1959.03.23"]
[PlyCount "91"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Bd3 Bg7 8. Nge2 O-O 9. O-O b6 10. Bg5 Ba6 11. Bxa6 Nxa6 12. Qd2 Re8 13. Ng3 Qd7 14. Qf4 Ng4 15. h3 Ne5 16. Bf6 Nd3 17. Qf3 Bxf6 18. Qxd3 Nc7 19. a4 a6 20. Ra2 b5 21. axb5 axb5 22. Rfa1 b4 23. Nd1 Rxa2 24. Rxa2 Qb5 25. Qb1 h5 26. Ne3 c4 27. b3 cxb3 28. Qxb3 h4 29. Ngf1 Rxe4 30. Nd2 Rd4 31. Ndc4 Nxd5 32. Ra8+ Kh7 33. Rf8 Nxe3 34. Rxf7+ Bg7 35. Nxe3 d5 36. Rxg7+ Kxg7 37. Qb2 Qd3 38. Nc2 Qc3 39. Qxc3 bxc3 40. Nxd4 Kf6 41. Kf1 Ke5 42. Nf3+ Kd6 43. Ke2 Kc5 44. Kd3 Kb4 45. Nd4 g5 46. f3 1-0

[Event "17th Mar del Plata it"]
[Site "Mar del Plata ARG"]
[Date "1959.04.09"]
[Round "15"]
[White "Souza Mendes, Joao"]
[Black "Shocron, Ruben"]
[Result "1-0"]
[ECO "E59"]
[EventDate "1959.03.23"]
[PlyCount "91"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. Nf3 d5 7. O-O O-O 8. a3 Bxc3 9. bxc3 dxc4 10. Bxc4 Qc7 11. Bb5 Bd7 12. a4 a6 13. Be2 Rfe8 14. Ba3 e5 15. d5 Nb8 16. c4 Bg4 17. h3 Bh5 18. Nh4 Bxe2 19. Qxe2 Ne4 20. Qd3 Nd6 21. e4 Nd7 22. Nf5 Nxf5 23. exf5 e4 24. Qc3 Qf4 25. Rab1 Rab8 26. Qe3 Qxf5 27. Bxc5 Rbc8 28. g4 Qg6 29. Bd4 Rxc4 30. Rxb7 Qd6 31. Ba1 Qxd5 32. Qa7 Rd8 33. Rfb1 h5 34. gxh5 Rxa4 35. Bc3 Qg5+ 36. Kh2 Ne5 37. Bxe5 Qxe5+ 38. Kg2 Qxh5 39. R1b3 Qd5 40. Qe3 Ra3 41. Rxa3 Qxb7 42. Ra4 f5 43. Kh2 Rd3 44. Qc5 Qb8+ 45. Kg2 Qf4 46. Qc4+ 1-0
