Author: Tony Hedlund
Date: 05:29:50 12/20/97
Here's the comments from the actual tester: Conserning Junior4 P100 - Rebel9 P200MMX In the evening the 5th of November I started the 21th game between the programs. It was the first, where Junior had the white pieces. After the moves 1. c4 c6 2. d4 d5 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5 6. Ne5 e6 7. f3 c5 8.e4 cxd4 9. Bxc4 Bg6 10. Bb5+ Nfd7 11. Qxd4 a6 12. Bxd7+ Nxd7 13. Nxd7 Qxd7 14. Qxd7+ Kxd7 15. Be3 Bd6 16. h4 f6 17. h5 Bf7 18. h6 gxh6 19.Rxh6 Bg6 20. Rd1 Ke7 21. Ke2 Rac8 22. f4 Rhg8 23. g4 Bb4 24. f5 Bf7 25. fxe6 Bxe6 26. Nd5+ Bxd5 27. Rxd5 Rxg4 28. Rxh7+ Ke6 29. Kf3 Rgg8 30. Rxb7 Rb8 31.Rxb8 Rxb8 32. Bd4 Rc8 33. Ke3 Be7 34. Ra5 Ra8 35. Kd3 Bd6 36. Bc3 Bc7 37.Rc5 Rd8+ 38. Kc4 Bg3 39. Rc6+ Rd6 40. Rxd6+ Bxd6 41. b4 Be7 42. b5 axb5+ 43. Kxb5 Bd8 44. Bd4 Bc7 45. Bb6 Bg3 46. a5 Kd7 47. a6 Kc8 48. Kc6 Kb8 49. Bd4 the game was interrupted for some reason, what kind of reason it was later impossible for me to discover (perhaps an disturbance in the electrical net?), and a new game began. This I did not know. It was night, and I law in bed sleeping. Several days later I collected the played games in order to report them to SSDF. Then I discovered that the 21th game was a problem. I analyzed the game and found that white had a simple och clear way to win. But the question was: Could Junior find it? Here I made my mistake. By some reason I had come to the conclusion, that it was a simple matter for Junior to win the arisen position. When I Yesterday let the programs complete the game, the following happened: 49...Bh4 50. Kd7 Bg5 51. Ke6 Ka8 52. Bxf6 Be3 53. Kd5 Bf4 54. e5?? Lxe5! This demonstrates that Junior lacks an important piece of endplayknowledge. Now the position is a draw. As for Rebel, it treats these endplaypositions without any difficulty. I found it interesting to let Rebel 9 play the position efter White´s 49th move "engine against engine". First the case Rebel9 - Rebel9. The brackets contain my comments. Rebel9 - Rebel9, 40 moves - 2 hours: 49...Bh4 50. Kd7 Bg5 51. Ke6 Ka8 52. Bxf6 Be3 53. Kd5 Bf4 (53...Ka7 54.Bd4 with an easy win for white) 54. Be5 Be3 55. Bd4 Bf4 56. Bc5 Bc7 57. Kc6 Be5 58. Bb6 Bf4 59. Bc7 Bg5 (59...Be3 60.e5 Ka7 61.e6 Bg5 62.Kd7 Kxa6 63.Ld8 and white gets a new Qween) 60. e5 Ka7 61. e6 Kxa6 62. Kd7 Kb5 63. Bd8 Bxd8 64. Kxd8 Kc6 65. e7 Kd5 66. Kd7 Ke5 67. e8=Q+ Kf4 68. Qe2 Kf5 69.Ke7 Kg5 70. Qe4 Kh6 71. Qg4 Kh7 72. Kf6 Kh6 73. Qg6# * Then I wanted to see if the somewhat weaker Rebel Decade could settle to win. Rebel Decade - REBEL 9.0, 40 moves - 2 hours: 49. Bh4 50. Kd7 Bg5 51. Ke6 Ka8 52. Bxf6 Be3 53. Kd5 Bf4 54. Be5 Bd2 55.Bc7 Bc3 (55...Ka7 56.e5 Kxa6 57.e6 Bg5 58.Kc6 Bh4 59.Kd7 Kb7 60.Bd8 and white gets a new Qween) 56. Bb6 Bf6 57. Bd4 Bh4 58. e5 Be7 59. e6 Kb8 60. Bc5 Bh4 61. Kc6 Ka8 62. Kd7 Bf6 63. Ke8 (63. Bb6! with the intention 64. Bd8 wins faster) 63. Bg5 64. Kf7 Bd8 65. Bd4 Kb8 66. Bf6 Bb6 67. e7 Ka7 68. e8=Q Kxa6 69. Qa8+ Kb5 70. Qb7 Kc5 71. Ke6 Ba5 72. Qd5+ Kb4 73. Kd6 Bb6 74. Kc6 Bg1 75. Qb5+ Ka3 76. Bc3 Bc5 77. Qb2+ Ka4 78. Qa2+ Ba3 79.Qc2# 1-0 Apparently no difficulty, even if it took 6 moves more to checkmate. Of course I have sent the right result (1/2-1/2) to SSDF to be used in the coming calculations of the ratinglist. With Chess Greetings Bo Aurell Emailadr: b.aurell@swipnet.se
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