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Subject: Re: Junior-Crafty hardware user experiment - 15th game

Author: Sune Fischer

Date: 16:12:09 12/17/03

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On December 17, 2003 at 18:28:49, Martin Andersen wrote:

>On December 17, 2003 at 15:11:04, Peter Berger wrote:
>
>
>>Crafty 19.4 - Junior 8.0.0.2
>>[D]2q1r1k1/5p1p/2P5/p1rn2p1/Qb1Nn3/6PP/1P4BK/R1B2R2 b - - 0 1
>>
>>Not a bad testposition at all - 26. ..Nxg3 is not so easy to find for some
>>engines. White is toast.
>>
>>Crafty itself can't find it in an acceptable time on my Athlon 2600+ at all.
>>Ruffian and Yace need some time too.
>>
>
>Crafty 19.7 Linux, Athlon 2400+ takes 23 min to prefer 26...Nxg3:
>
>Depth:       13      Nodes: 1272643K (911 kn/s)
>Score:    -0.40      Time:   1396.55 seconds
>1. ... Nxg3!!
>
>
>Martin.

Hmm, I don't understand why Crafty can't find that, even latest frenzee without
dubious speculative patzer eval seems to find it in about a minute (@2GHz AMD):

9	29	313	    2342291	1...Qc7 3.Qb3 Qe5 4.Qf3 Nxg3 5.Qxg3 Qxd4 6.Qxg5+ Kf8 7.Qh6+
Kg8
10	14	1472	   11042144	1...Qc7 3.Qb3 Ndf6 4.Rb1 Qd6 5.Nf5 Qxc6 6.Nh6+ Kg7
7.Qxf7+ Kxh6 8.Rxf6+ Qxf6
11	0	3500	   27628082	1...Qc7 3.Qb3 Ndf6 4.Qd3
11	0	5878	   47430265	1...Nxg3
11	-50	6519	   52479004	1...Nxg3 3.Kxg3 Qc7+ 4.Kf2 Qe5 5.Rd1 Rc4 6.Qb3 Rxd4
7.Bxg5 Nf4 8.Rxd4
12	-74	10131	   80986204	1...Nxg3 3.Kxg3 Qc7+ 4.Kf2 Qe5 5.Rd1 Rc4 6.Bxd5 Be1+
7.Kg1 Rxa4 8.Rxa4 Qxd5

-S.



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