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Subject: Re: Yet again: Hashing and FINE 70

Author: Robert Hyatt

Date: 21:27:24 12/18/00

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On December 18, 2000 at 18:03:20, Ulrich Tuerke wrote:

>This is my standard test set for hashing:
>
>[D]8/k7/3p4/p2P1p2/P2P1P2/8/8/K7 w - - 0 1
>id "HASH-01";bm Kb1;c0 "Kb1! only wins";
>[D]8/1p5k/1P1p4/3p4/3Pp2p/2K1P2p/7P/8 w - - 0 1
>id "HASH-02";bm Kb2;c0 "Kb2! forces draw";
>[D]k1N5/2p5/8/1P6/8/8/7K/8 w - - 0 1
>id "HASH-03";c0 "dead drawn";

Are you sure the above is drawn?  Crafty says Nb6+ and if cxb6 it is a
mate in 20-something.  If not, Na5 locks things up until the king gets
over and wins...

I checked this with the 5 piece endgame tablebases and get the following
output:

1. Nb6+ cxb6 2. Kg3 Kb7 3. Kf4 Kc7 4. Ke5 Kd7 5. Kd5 Kc7 6. Ke6 Kb8
7. Kd7 Kb7 8. Kd6 Ka8 9. Kc7 Ka7 10. Kc6 Ka8 11. Kxb6 Kb8 12. Ka6
Kc7 13. Ka7 Kd6 14. b6 Kc5 15. b7 Kd4 16. b8=Q Ke3 17. Qh8 Kd2 18.
Qe8 Kd1 19. Qe3 Kc2 20. Kb6 Kb1 21. Qf2 Ka1 22. Kc5 Kb1 23. Kd4 Ka1
24. Kc3 Kb1 25. Qb2#




>[D]1K6/8/2p4p/5p2/1P3P1k/4pP1p/4P2P/8 w - - 0 1
>id "HASH-04";bm Ka8;c0 "Study W.Bolanowski, 1.Ka8! wins";



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