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Subject: Re: 1. Rg3! and Fritz 9

Author: Djordje Vidanovic

Date: 06:53:40 11/07/05

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On November 07, 2005 at 08:29:00, vladan wrote:

>On November 06, 2005 at 21:18:21, Djordje Vidanovic wrote:
>
>>If you take a look at this position you can see that Fritz 9 needs a decent
>>chunk of time to find the simple Rg3! It spends a lot of time on the simple pawn
>>to g4 and only after about 80 seconds (FX-53) switches to Rg3, eventually
>>announcing a mate in 23:
>>
>>[D] r6r/p2Q2pp/6k1/2P1pp2/1Pb5/R7/6PP/6K1 w - - 0 29
>>
>>
>>It is interesting to note that Fritz 9 learns successfully, even though its
>>positional learning is all done in the RAM and gets cleared the moment you exit
>>Fritz.  In a repeated try while I was still in the program, Fritz targeted Rg3!
>>right away never changing the winning line.
>>
>>
>>Djordje
>
>Very interesing observation Djordje, but I think its not machine learning,
>simply Fritz uses old hash generated by primary searching. Try to reset
>hash, and then search the position again. Ruffian also has advanced hash
>procedures to use previous search results, but it is only hashing.
>
>
>Best regards,
>
>Vladan


Hi Vladan,

nope, Fritz 9 does learn albeit only during longer engine-engine matches that
are played non-stop, or while at the server overnight etc.

Trust me, I know what I am saying :-)


Djordje



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