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Subject: Re: It does...

Author: blass uri

Date: 11:13:17 02/09/00

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On February 09, 2000 at 13:38:27, Enrique Irazoqui wrote:

>On February 09, 2000 at 13:33:33, blass uri wrote:
>
>>On February 09, 2000 at 13:16:59, Enrique Irazoqui wrote:
>>
>>>On February 09, 2000 at 13:02:30, blass uri wrote:
>>>
>>>>On February 09, 2000 at 12:54:24, Enrique Irazoqui wrote:
>>>>
>>>>>On February 09, 2000 at 12:50:57, blass uri wrote:
>>>>>
>>>>>>On February 09, 2000 at 12:25:08, Enrique Irazoqui wrote:
>>>>>>
>>>>>>>On February 09, 2000 at 12:00:36, blass uri wrote:
>>>>>>>
>>>>>>>>2rqr1k1/p3bp1p/6p1/n1pnP3/3pB1b1/PP3N2/2QN1PPP/B1R1R2K b - - 0 1
>>>>>>>>
>>>>>>>>This position is from game 19 between Fritz6a and rebel Century.
>>>>>>>>Rebel Century played 22...Rb8 after 81 seconds and lost the game.
>>>>>>>>
>>>>>>>>My original Rebel Century
>>>>>>>
>>>>>>>That's it. Did Ed send you the patched version that played in my tournament?
>>>>>>>It's supposed to be identical to yours, except for the removal of some code that
>>>>>>>improved the speed by 8%. It had to do with a discussion here between Ed and
>>>>>>>Bob. Later on, Ed found out that this new code harmed Century, removed it and
>>>>>>>sent me the patch.
>>>>>>>
>>>>>>>>(not 1.2) found after less than a minute on
>>>>>>>>pentiumIII450(slower than enrique's hardware) the move
>>>>>>>>22...Nf4 and does not change its mind.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>>probably an autoplayer problem.
>>>>>>>
>>>>>>>Nope, I just checked. Century picks Rb8 at ply 7.02 after 15 seconds, +0.38 eval
>>>>>>>and keeps it until ply 9.01, when it switches to Nf4 after 238 seconds, +0.43.
>>>>>>>Ed can confirm.
>>>>>>
>>>>>>I played a game against the original Rebel century that I got when I bought it
>>>>>>and it found Nf4 in less than  a minute.
>>>>>>
>>>>>>I used the infinite time control and told it to move when it used enough time.
>>>>>>It could produce all the moves before Nf4 but swithced to Nf4 after less than a
>>>>>>minute.
>>>>>>
>>>>>>Maybe the difference is because I used the game and not the position without the
>>>>>>game.
>>>>>
>>>>>I used the game too, of course.
>>>>>
>>>>>>I do not know.
>>>>>
>>>>>If you check it with the patch Ed sent me, you will get the same results.
>>>>>
>>>>>Enrique
>>>>
>>>>It seems that this patch is not productive for Rebel Century
>>>
>>>Well... what can I say. If Ed sent it for the tournament it must be because it
>>>is at least not worse than the original Century.
>>
>>I guess that he thought that it is not worse but the question is if he was right
>>>
>>>> because the
>>>>commercial Rebel century without the patch can find Nf4 faster(only 58 seconds
>>>>on my pentiumII450)
>>>
>>>One move, come on.. It doesn't prove that a program is better than another.
>>
>>My Rebel gives exactly the same score for Rb8 at depth 7(0.38)
>>and exactly the same score for Nc4 at depth 9(0.43) but is wise enough to
>>changes its mind at depth 8 for Nc4 (evaluation 0.41)
>
>Uri, do you really think that a difference of 3/100 of a pawn in the evaluation
>is enough to tell which version of Century is better? Ed's criteria deserve more
>credit than that, don't you think?
I am not sure if the commercial version is better.
One move is not enough to be sure about it.

I did not say that I am sure about it but only that this is my impression.
The bad results of Rebel century support my impression.

Uri



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