[Event "Nathanya-10 Open"]
[Site "Nathanya"]
[Date "1971.06.19"]
[Round "11"]
[White "Helman, Amir"]
[Black "Weisman, Osias"]
[Result "1/2-1/2"]
[ECO "B06"]
[PlyCount "86"]
[EventDate "1971.06.07"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ISR"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. f4 Nc6 5. Be3 e6 6. Nf3 Nf6 7. Be2 d5 8. e5 Ng4 9. Bg1 h5 10. Qd2 Ne7 11. h3 Nh6 12. 0-0-0 Bd7 13. Bf2 a6 14. Ng5 b5 15. g4 hxg4 16. hxg4 b4 17. Nb1 Qb8 18. Rh2 Bb5 19. Rdh1 Bxe2 20. Qxe2 Qb5 21. Qf3 Qa4 22. Be1 Nc6 23. Qd3 0-0-0 24. Nxf7 Nxf7 25. Qxg6 Rxh2 26. Rxh2 Nxd4 27. Qxg7 Rd7 28. Qf8+ Nd8 29. Qxb4 Qxb4 30. Bxb4 Rf7 31. Rf2 Rxf4 32. Rxf4 Ne2+ 33. Kd1 Nxf4 34. Be7 Nf7 35. Bf6 Ng6 36. Nd2 Nfxe5 37. g5 Nd7 38. Nb3 c5 39. Kd2 Kc7 40. Ke3 Kd6 41. Bd8 e5 42. Na5 c4 43. Nb7+ Ke6 1/2-1/2

[Event "Nathanya-10 Open"]
[Site "Nathanya"]
[Date "1971.06.17"]
[Round "10"]
[White "Weisman, Osias"]
[Black "Seelan, Svend"]
[Result "1-0"]
[ECO "C00"]
[PlyCount "117"]
[EventDate "1971.06.07"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ISR"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 e6 2. Nc3 d5 3. Nf3 d4 4. Ne2 Bc5 5. d3 Nc6 6. a3 a5 7. b3 e5 8. Ng3 h5 9. h3 g6 10. Be2 Be6 11. Ng5 Bd7 12. 0-0 f6 13. Nf3 h4 14. Nh1 Qe7 15. Nh2 0-0-0 16. Qe1 b6 17. f4 exf4 18. Rxf4 g5 19. Rf1 Nh6 20. Nf2 Ne5 21. Qd1 Rdg8 22. Bg4 Kb7 23. Bxd7 Qxd7 24. Nfg4 Nhxg4 25. Nxg4 Nxg4 26. Qxg4 Qxg4 27. hxg4 h3 28. Rxf6 hxg2 29. e5 Rh4 30. Kxg2 Rxg4+ 31. Kf3 Rh4 32. Kg3 Rh5 33. Rf5 Kc6 34. Bb2 Rh7 35. Re1 g4 36. Re4 Rh1 37. Bxd4 Bxa3 38. Rf6+ Kb7 39. Rxg4 Rgh8 40. Kf3 R8h2 41. c4 Rd1 42. Ke4 Rh3 43. Be3 Bc5 44. d4 Bb4 45. e6 Re1 46. Rf3 Rh7 47. Kf5 Be7 48. d5 Rb1 49. Bd4 Rd1 50. Bf6 Re1 51. Bxe7 Rxe7 52. Kf6 Rh7 53. Rg7 Rh2 54. Ke7 b5 55. Kd7 Rh6 56. Rgf7 bxc4 57. bxc4 a4 58. Ra3 Kb6 59. Rxa4 1-0

[Event "Nathanya-10 Open"]
[Site "Nathanya"]
[Date "1971.06.16"]
[Round "9"]
[White "Carmel, Ephraim"]
[Black "Weisman, Osias"]
[Result "1-0"]
[ECO "B06"]
[PlyCount "123"]
[EventDate "1971.06.07"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ISR"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. f4 Nc6 5. Nf3 Bg4 6. Be3 Bxf3 7. gxf3 e5 8. dxe5 dxe5 9. Qxd8+ Rxd8 10. Nd5 Rd7 11. 0-0-0 Nge7 12. c3 Nxd5 13. exd5 Ne7 14. Bb5 c6 15. dxc6 bxc6 16. Ba4 Bh6 17. Rhe1 Rxd1+ 18. Kxd1 Bxf4 19. Bxf4 exf4 20. Bxc6+ Kd8 21. Ba4 Nf5 22. Re4 Ne3+ 23. Ke2 g5 24. Rd4+ Kc8 25. Rd7 f5 26. Rxa7 Kb8 27. Rf7 h5 28. Rg7 g4 29. Bd7 Rh6 30. Rg5 Ra6 31. a4 Kc7 32. Rg7 Kd8 33. Bb5 Re6 34. Rd7+ Kc8 35. Rh7 Nd5+ 36. Kf2 Re3 37. fxg4 hxg4 38. Rf7 Rf3+ 39. Ke2 Rh3 40. Rxf5 Rxh2+ 41. Kd3 g3 42. Ke4 g2 43. Rg5 Ne3 44. Kxf4 Nd1 45. Kf3 Nxb2 46. Rxg2 Rxg2 47. Kxg2 Kc7 48. Kf3 Nd1 49. c4 Kb6 50. Ke2 Nb2 51. Kd2 Kc5 52. Kc3 Nd1+ 53. Kb3 Nf2 54. a5 Ne4 55. a6 Kb6 56. Kb4 Ng5 57. c5+ Ka7 58. Kc4 Ne6 59. Kd5 Nc7+ 60. Kc6 Ne6 61. Kd6 Nd4 62. Bd3 1-0

[Event "Nathanya-10 Open"]
[Site "Nathanya"]
[Date "1971.06.15"]
[Round "8"]
[White "Porat, Yosef"]
[Black "Weisman, Osias"]
[Result "1-0"]
[ECO "A56"]
[PlyCount "97"]
[EventDate "1971.06.07"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ISR"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 g6 6. f3 Nh5 7. Be3 Bg7 8. Qd2 a6 9. Bd3 0-0 10. Nge2 f5 11. a3 f4 12. Bf2 Nd7 13. b4 b6 14. Rb1 Rf7 15. Nc1 Nf8 16. Nb3 Rb7 17. Kd1 Rab8 18. Kc2 Bd7 19. g4 Nf6 20. Rb2 Qc7 21. Rhb1 Be8 22. Qe1 cxb4 23. axb4 a5 24. bxa5 bxa5 25. c5 a4 26. Nd2 Rxb2+ 27. Rxb2 Rxb2+ 28. Kxb2 dxc5 29. Qa1 Qa5 30. Kc2 Qb4 31. g5 Nh5 32. Na2 Qa5 33. Qc3 Qd8 34. h4 Nd7 35. Bb5 Bf7 36. Bxa4 Nb6 37. Bb3 Ng3 38. Qxc5 Nd7 39. Qb5 h6 40. gxh6 Bxh6 41. Nb4 Nf8 42. Nc6 Qxh4 43. Nxe5 Qd8 44. Nxf7 Kxf7 45. d6+ Kg7 46. Bd4+ Kh7 47. Qd5 Bg5 48. Qg8+ Kh6 49. Qh8+ 1-0

[Event "Nathanya-10 Open"]
[Site "Nathanya"]
[Date "1971.06.14"]
[Round "7"]
[White "Weisman, Osias"]
[Black "Mart, Avner"]
[Result "1/2-1/2"]
[ECO "A48"]
[PlyCount "85"]
[EventDate "1971.06.07"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ISR"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. c3 b6 5. Nbd2 Bb7 6. h3 d6 7. Qc2 Nbd7 8. e4 0-0 9. Be3 c5 10. d5 e6 11. dxe6 fxe6 12. c4 Ne5 13. Nxe5 dxe5 14. Be2 Nd7 15. h4 Nb8 16. h5 Nc6 17. hxg6 hxg6 18. Bg4 Qe7 19. a3 Rad8 20. f3 Kf7 21. 0-0-0 Rh8 22. Bh3 Bf6 23. g3 Kg7 24. Bg2 Rxh1 25. Rxh1 Rh8 26. Rxh8 Kxh8 27. Nf1 Nd4 28. Bxd4 exd4 29. e5 Bxe5 30. Qxg6 Qf6 31. Qh5+ Kg7 32. Qg4+ Qg6 33. Bh3 Qxg4 34. Bxg4 Kf6 35. Kd2 Bc6 36. f4 Bd6 37. Kd3 e5 38. fxe5+ Bxe5 39. Nd2 Kg5 40. Bf3 Bxf3 41. Nxf3+ Kf5 42. b4 Bxg3 43. Nd2 1/2-1/2

[Event "Nathanya-10 Open"]
[Site "Nathanya"]
[Date "1971.06.13"]
[Round "6"]
[White "Drimer, Dolfi"]
[Black "Weisman, Osias"]
[Result "1-0"]
[ECO "C62"]
[PlyCount "79"]
[EventDate "1971.06.07"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ISR"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Qxd4 Nc6 5. Bb5 Bd7 6. Bxc6 bxc6 7. Bg5 f6 8. Bf4 Ne7 9. Nc3 Ng6 10. Bg3 Be7 11. Qc4 Qc8 12. 0-0 a5 13. a4 Qa6 14. Qa2 Nf8 15. Nd4 Rb8 16. Rfe1 Rb4 17. Nf5 Bxf5 18. exf5 Qc4 19. Qb1 h5 20. Re4 Qc5 21. Qe1 Rxe4 22. Nxe4 Qxf5 23. Bxd6 Ng6 24. Ng3 Qd7 25. Bxe7 Nxe7 26. Qxa5 h4 27. Qa8+ Nc8 28. Nf1 Kf7 29. Qa6 Nd6 30. Qd3 g5 31. a5 Qe6 32. Ne3 h3 33. g3 Qe4 34. Qxe4 Nxe4 35. f3 Nd6 36. g4 Nb5 37. Kf2 Ke6 38. Ra4 Kd7 39. Nf5 c5 40. Rc4 1-0

[Event "Nathanya-10 Open"]
[Site "Nathanya"]
[Date "1971.06.12"]
[Round "5"]
[White "Weisman, Osias"]
[Black "Bernstein, Yaacov"]
[Result "1/2-1/2"]
[ECO "C50"]
[PlyCount "80"]
[EventDate "1971.06.07"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ISR"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. Qe2 d6 6. h3 Na5 7. Nbd2 Nxc4 8. Nxc4 Be6 9. Ne3 h6 10. g4 g6 11. c4 a5 12. a3 c6 13. Nd1 Nd7 14. b3 b5 15. Rb1 b4 16. a4 Qe7 17. Bb2 Qf6 18. Ne3 0-0-0 19. Rd1 Bd4 20. Bxd4 exd4 21. Nc2 c5 22. Kf1 h5 23. g5 Qf4 24. Nce1 Ne5 25. Qd2 Qxd2 26. Rxd2 Kc7 27. Nxe5 dxe5 28. Nf3 Kd6 29. Nh4 Rhg8 30. Ng2 f6 31. gxf6 Rdf8 32. f3 Rxf6 33. Rf2 g5 34. Ke2 Rgf8 35. Rff1 Ke7 36. Ne1 Kf7 37. Rfg1 Kg6 38. Rh2 Kh6 39. Rhg2 Rg8 40. Rh2 Rgf8 1/2-1/2

[Event "Nathanya-10 Open"]
[Site "Nathanya"]
[Date "1971.06.11"]
[Round "4"]
[White "Neumann, Avraham"]
[Black "Weisman, Osias"]
[Result "1-0"]
[ECO "C41"]
[PlyCount "137"]
[EventDate "1971.06.07"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ISR"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 Nf6 5. Nc3 Be7 6. Bc4 a6 7. a4 Nc6 8. Nxc6 bxc6 9. 0-0 0-0 10. Re1 Ng4 11. Be2 Ne5 12. Be3 Rb8 13. Rb1 a5 14. Qd2 f5 15. b3 fxe4 16. Nxe4 Rb4 17. Ng3 Bf6 18. f4 Ng4 19. Bxg4 Bxg4 20. c3 Rb8 21. Qd3 Bd7 22. Bd2 c5 23. Ne4 Kh8 24. Ng3 Bh4 25. c4 Ra8 26. Kh1 Bxg3 27. Qxg3 Rf6 28. Bc3 Rg6 29. Qf3 Ra6 30. Rb2 Bc6 31. Qh3 Ra8 32. f5 Rg5 33. Re6 Kg8 34. f6 Bd7 35. Qe3 Rf5 36. Kg1 gxf6 37. Bxf6 Rxf6 38. Qg5+ Rg6 39. Rxg6+ hxg6 40. Qxg6+ Kh8 41. Qh6+ Kg8 42. Qg6+ Kh8 43. Re2 Qh4 44. Re4 Qh7 45. Qxh7+ Kxh7 46. Re7+ Kg6 47. Rxd7 Rb8 48. Rxc7 Rxb3 49. Ra7 Rc3 50. Rxa5 Rxc4 51. Ra8 d5 52. a5 Ra4 53. a6 c4 54. a7 Kg7 55. Kf2 d4 56. Rc8 Rxa7 57. Rxc4 Ra2+ 58. Kf3 Rd2 59. h4 Kf6 60. g4 Ke5 61. Rc5+ Kd6 62. Rc1 Kd5 63. g5 Ra2 64. g6 Ke6 65. Rg1 Ra8 66. h5 Kf6 67. h6 d3 68. Ke3 Rd8 69. Kd2 1-0

[Event "Nathanya-10 Open"]
[Site "Nathanya"]
[Date "1971.06.10"]
[Round "3"]
[White "Weisman, Osias"]
[Black "Levy, David Neil Lawrence"]
[Result "1-0"]
[ECO "A48"]
[PlyCount "65"]
[EventDate "1971.06.07"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ISR"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 c5 3. e3 g6 4. c3 Bg7 5. Nbd2 0-0 6. Bd3 d6 7. 0-0 a6 8. h3 Nc6 9. Ne4 b6 10. Nxf6+ Bxf6 11. d5 Nb8 12. c4 Nd7 13. Qe2 Ne5 14. Nxe5 Bxe5 15. f4 Bg7 16. e4 Rb8 17. a4 Bd7 18. Ra2 Qe8 19. b3 b5 20. axb5 axb5 21. Bb2 Bxb2 22. Rxb2 bxc4 23. bxc4 Rb4 24. Ra2 Ba4 25. Rfa1 Qd7 26. e5 Rfb8 27. e6 fxe6 28. dxe6 Qe8 29. f5 Bb3 30. fxg6 Bxa2 31. Qh5 Kg7 32. Qxh7+ Kf6 33. Rf1+ 1-0

[Event "Nathanya-10 Open"]
[Site "Nathanya"]
[Date "1971.06.08"]
[Round "2"]
[White "Czesakov, Zelig"]
[Black "Weisman, Osias"]
[Result "0-1"]
[ECO "C47"]
[PlyCount "48"]
[EventDate "1971.06.07"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ISR"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 5. Nd5 d6 6. Nxd4 Be7 7. Bf4 0-0 8. Nb5 Nxd5 9. exd5 Ne5 10. Qd2 Ng6 11. Be3 Bf6 12. 0-0-0 a6 13. Nc3 Re8 14. h3 b5 15. g4 h6 16. Ne2 Bb7 17. Ng3 Bg5 18. Nf5 Bxe3 19. Nxe3 Re5 20. Qd4 Qf6 21. h4 Qxf2 22. Rh3 Rae8 23. h5 Nf4 24. Rd2 Qxf1+ 0-1

[Event "Nathanya-10 Open"]
[Site "Nathanya"]
[Date "1971.06.07"]
[Round "1"]
[White "Weisman, Osias"]
[Black "Friedman, Shmuel"]
[Result "1/2-1/2"]
[ECO "B39"]
[PlyCount "97"]
[EventDate "1971.06.07"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ISR"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. Nf3 Nc6 4. Nxd4 g6 5. c4 Bg7 6. Be3 Nf6 7. Nc3 Ng4 8. Qxg4 Nxd4 9. Qd1 Ne6 10. Be2 Qa5 11. Qc2 Nd4 12. Bxd4 Bxd4 13. 0-0 Bxc3 14. bxc3 d6 15. Rab1 0-0 16. Rb5 Qc7 17. Rfb1 b6 18. Qd2 Be6 19. Qd4 Rac8 20. R5b4 Qc5 21. Ra4 Rc7 22. h4 f6 23. Qxc5 dxc5 24. Rd1 Rb8 25. Ra3 Bd7 26. Rd2 Bc6 27. f3 Rbb7 28. Kf2 Rd7 29. Rxd7 Rxd7 30. Ke3 e5 31. g4 Kf7 32. Rb3 Ke6 33. Rb1 Ba4 34. Rg1 h6 35. Rf1 Rd8 36. Rg1 Rd6 37. Rc1 Kf7 38. Rf1 Rd8 39. Rh1 Kg7 40. Rg1 g5 41. h5 Kf7 42. Rb1 Ke7 43. Rb2 Rd6 44. Rb1 Kd7 45. Rb2 Kc6 46. Rd2 Rxd2 47. Kxd2 Kb7 48. Bd1 Bd7 49. Kc1 1/2-1/2

