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Subject: Re: Chess Tiger- strongest program in yahoo!!

Author: James Robertson

Date: 19:10:44 01/25/00

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On January 25, 2000 at 20:31:23, robert michelena wrote:

>I have just finished one game against one of my friends in yahoo, and the result
>of this first game of our match is indeed interesting.  Chess Tiger checkmated
>Chessmaster 6666 even though tiger had the slower computer.  Based on this one
>game, I would have to say Tiger is the strongest program in my inventory.

Base anything on a _lot_ more than one game.

Imagine you have two copies of Chess Tiger both running on equal hardware. They
would score 50% against each other, correct? After all, they are the same
program. Suppose you give one copy of CT a computer twice as fast as the other
copy's computer. It turns out that the faster computer will win only 60-65% of
the time! Now suppose you give one copy of CT a 700mhz machine and the other
copy a 450mhz. The 700mhz machine will only score 55-60% against the slower
machine.

So, even if Chessmaster and Chess Tiger are of equal strength, Chess Tiger on
the slower machine has at least a 40% chance of winning. How can you therefor
conclude after one game it is stronger?

James

>
>Chess Tiger(black),      450 amd k6, 128 ram,
>Chessmaster 6666,(white) 700 athlon, 128 ram.
>Time control  15/10.
>
>;Title: Yahoo! Chess Game
>;White: bozo_plays_chess (chessmaster 6666)
>;Black: rebel_tiger_12   (Chess Tiger )
>;Date: Tue Jan 25 17:24:08 PST 2000
>
>1. d2-d4 d7-d5
>2. c2-c4 e7-e6
>3. b1-c3 g8-f6
>4. c1-g5 f8-e7
>5. e2-e3 o-o
>6. g1-f3 h7-h6
>7. g5-h4 b7-b6
>8. f1-d3 c8-b7
>9. h4xf6 e7xf6
>10. c4xd5 e6xd5
>11. o-o c7-c5
>12. a1-c1 c5xd4
>13. e3xd4 b8-c6
>14. d3-c2 b7-a6
>15. f1-e1 d8-d6
>16. c3xd5 d6xd5
>17. c2-e4 d5xa2
>18. e4xc6 a8-c8
>19. d1-d2 f8-d8
>20. f3-e5 a2-e6
>21. f2-f4 e6-d6
>22. d4-d5 c8-c7
>23. b2-b4 f6-e7
>24. e1-e4 d6-f6
>25. e5-f3 a6-c8
>26. f3-d4 a7-a6
>27. c1-e1 e7-d6
>28. g1-h1 c7-e7
>29. e4xe7 d6xe7
>30. e1-e4 e7-f8
>31. h1-g1 f8-d6
>32. g2-g3 f6-g6
>33. e4-e1 d6-f8
>34. d2-c3 g6-d6
>35. d4-c2 c8-d7
>36. e1-e3 d7xc6
>37. d5xc6 d8-c8
>38. b4-b5 a6xb5
>39. c2-d4 d6-c5
>40. c3-d2 g7-g6
>41. e3-c3 c5-d5
>42. d4-f3 f8-c5+
>43. g1-f1 d5xc6
>44. c3-d3 c6-e4
>45. f1-g2 b5-b4
>46. d2-d1 c8-a8
>47. d3-d8+ a8xd8
>48. d1xd8+ g8-g7
>49. d8-d1 b4-b3
>50. g2-h3 b3-b2
>51. f3-d2 e4-f5+
>52. d1-g4 f5-d3
>53. g4-d1 c5-e3
>54. d1-f1 d3-d7+
>55. f4-f5 e3xd2
>56. g3-g4 g6xf5
>57. g4xf5 g7-f6
>58. h3-g4 d7-d4+
>59. g4-g3 d4-e5+
>60. g3-f2 e5-f4+
>61. f2-g2 f4-e4+
>62. g2-g3 d2-e1+
>63. g3-h3 b2-b1
>64. f1-f2 b1-d3+
>65. f2-g3 d3-f3
>66. g3xf3 e4xf3++
>
>A most impressive performance by tiger considering that it was using a much
>slower computer.



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