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Subject: Re: Junior 5 and Crafty 15.18 engine

Author: Amir Ban

Date: 13:33:59 11/23/98

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On November 23, 1998 at 15:05:31, Martin Müller wrote:

>In my game of last weekend with my handle sonho on ICC I played the following
>game with the crafty engine:
>
>
>
>lgn - crafty / junior 5 [C55]
>ICC
>[Müller,M]
>
> 65536kB, Nivenbasetree.ctg=14691180 pos
> 1.e4 e5 2.Sf3 Sc6 3.Lc4 Sf6 4.d3 d6 5.Lb5 Lg4 6.c3 Le7 7.h3 Lh5 8.Sbd2 0-0
>9.0-0 a6 10.La4 b5 11.Lb3 Sa5 12.Lc2 c5 13.Sb3 Sc6 14.Le3 a5 15.a3 a4 16.Sbd2
>Dd7 17.g4 Lg6 18.d4 cxd4 19.cxd4 exd4 20.Sxd4 Se5 21.f4 Sexg4 22.hxg4 Sxg4
>23.Df3 Lh5 24.Lf2 g6 25.Dh3 Da7 26.Sxb5 Da5 27.Sc3 Tac8 28.Ld4 d5 29.b4 axb3
>30.Sxb3 Dc7 31.Sxd5 Dd7 32.Sb6 Dc6 33.Sxc8 Txc8 34.Tfc1 Dd6 35.e5 Dd5 36.Dg2 De6
>37.a4 Lh4 38.a5 Da6 39.Ld3 Dxd3 40.Txc8+ Kg7 41.a6 Dxb3 42.a7 Se3 43.Tg8+ Kh6
>44.a8D Sxg2 45.Df8# Line
>
>After 29. -  axb3 Crafty did not deal correctly with the e.p. move of the
>opponent and wrote something like Xxh4 intending to take the opponents queen
>what was not possible at all. It also saw an advantage of approx. 9-10 pawns.
>It seems, that there is a bug in the interface as crafty (according to Prof.
>Robert Hyatt) does normally fine in such situations. Personally I never had a
>problem against a crafty engine in doing a e.p. By the way I switched to Junior
>5 engine to finish the match. Crafty obviously already had prepared the win
>perfectly.
>
>Does anyone share similar experience with this program and engine?
>
>Kind regards
>Martin Mueller


There was an en-passant bug with Crafty that I reported during the beta process.
I think it was corrected, because I don't see it happening now, but maybe I
don't run Crafty often enough.

Amir





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