Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: A KRRPKR query ...

Author: Robert Hyatt

Date: 20:53:41 09/14/04

Go up one level in this thread


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
>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


White wins, forced mate in 17 moves:


1. Rf5+ Kb4 2. Rdd5 Re8 3. Rde5 Rb8 4. Ke3! Kc3 5. Rc5+ Kb4! 6. Rfd5
Rb6 7. Kd3 Rb7 8. Ra5 Rb6 9. g4! Rb7 10. g5! Kb3! 11. Rdb5+ Rxb5
12. Rxb5+! Ka4! 13. Rb8 Ka3 14. Kc4 Ka2! 15. Kc3! Ka1! 16. Kc2! Ka2
17. Ra8#



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.