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Subject: Re: A KRRPKR query ...

Author: Tony Werten

Date: 23:43:47 09/14/04

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On September 14, 2004 at 19:50:10, GuyHaworth wrote:

>
>I had occasion to return to a DEEP JUNIOR -v- DEEP FRITZ position of the 'Deep'
>C-C match, Game 4, 25/04/2001:
>
>r7/8/5R2/2k5/8/3R1K2/6P1/8 w:
>Play continued
>70. Rc6+ Kb5 71. Rc5+ Kb4 72. Rb5+ Kc4 73. Rd4+ Kc3 74. Rc5+ K*d4
>
>I guess DJ is trying to drop into a won KRPKR endgame, DF is trying to avoid
>doing that as long as possible, and DJ is assuming that that is what DF will do.
>
>However, if someone has the KRRPKR DTM EGT to hand, we can perhaps see how the
>DTM-minimaxing line goes from this position.
>
>Incidentally, at the time, Tony Werten suggested that with a deeper search, DJ
>should have gone:
>70. g4 Kc4 71. Rc6 Kxd3 and mate in 121 plies

My program did that 3.5 years ago ? Maybe it wasn't that bad after all.

Anyway, too late now.

New XiniX ( Kogge-Stone bitboards, C++, no egtbs (yet), no dual processor (yet))
still likes g4. Though most likely, it didn't do that with 2Mn/s back then :)

Tony



>Is this the best line that can be identified today with KRPKR EGTs?
>
>I wonder how this will compare with the KRRPKR DTM-minimaxing line.
>
>g



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