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Subject: Re: Testposition - endgame

Author: Bernhard Bauer

Date: 00:24:13 12/05/02

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On December 05, 2002 at 01:23:16, Timothy J. Frohlick wrote:

Here is some output from Yace. The knight is placed on h3!

   7890935   8.483  -0.70 16.  1.Kc2 Nc6 2.Nf2 Kc7 3.h3 Kb6 4.Ne4 Kxa6 5.Nd6
                               Bxd6 6.exd6 Kb6 7.Bf2 a6 8.Kd3 e5
  11248950  12.142  -0.68 17t  1.Kc2 Nc6 2.Nf2 Kc7 3.Kd3 Kb6 4.Nh3 Nd8 5.Ng1
                               Kxa6 6.h3 Kb5 7.Nf3 a6 8.Nd2 Kc6 9.Nf3H {-80}
  13833032  15.003  -0.68 17.  1.Kc2 Nc6 2.Nf2 Kc7 3.Kd3 Kb6 4.Nh3 Nd8 5.Ng1
                               Kxa6 6.h3 Kb5 7.Nf3 a6 8.Nd2 Kc6 9.Nf3 {-80}
  43217233  47.535  -0.28 18++ 1.Kc2 Nc6 2.Kd3 Nb8 3.Nxg5 hxg5 4.Bxg5 Nxa6
                               5.h4 Ke8
  43486245  47.845  -0.28 18t  1.Kc2 Nc6 2.Kd3 {HT}
  47837663  52.776  -0.28 18.  1.Kc2 Nc6 2.Kd3
  52295100  58.033  -0.68 19-- 1.Kc2 Nc6 2.Kd3
  78975330  1:28.0  -0.68 19t  1.Kc2 Nc6 2.Kd3H Nb8H 3.Nxg5H hxg5H 4.Bxg5H
                               Nxa6H 5.h4H Nc7H {HT}
  88558155  1:39.0  -0.68 19.  1.Kc2 Nc6 2.Kd3 Nb8 3.Nxg5 hxg5 4.Bxg5 Nxa6
                               5.h4 Nc7
 168000296  3:11.5  -0.28 20++ 1.Kc2 Nc6 2.Kd3 Nb8 3.Nxg5 hxg5 4.Bxg5 Nxa6
                               5.h4 Nc7 6.h5 a5 7.h6 a4 8.h7 Bh6
 170661008  3:14.4  -0.28 20t  1.Kc2 Nc6 2.Kd3 {HT}
 359413442  6:57.7  -0.27 20t+ 1.Nxg5 hxg5 2.Bxg5 Nxb3 3.h4 Ke8 4.h5 Na5 5.h6
                               Bxh6 6.Bxh6 Nc6 7.Be3 b3 8.Kc3 Na5 9.Bd2 Kd7
                               10.Bh6 Ke8 {HT}
 501555940  9:49.5  -0.25 20t  1.Nxg5 hxg5 2.Bxg5 Nxb3 3.h4 Ke8 4.h5 {HT}
                               {-260}
 507167786  9:56.6  -0.25 20.  1.Nxg5 hxg5 2.Bxg5 Nxb3 3.h4 Ke8 4.h5 {HT}
                               {-260}
 509150202  9:58.9  -0.25 20f. 1.Nxg5 hxg5 2.Bxg5 Nxb3 3.h4 Ke8 4.h5 Kd8H
                               5.h6H Bxh6H 6.Bxh6H {HT}

So yace needs less than 7 min to find Nxg5 on a AMD 1800 MHz.
Very good!
Kind regards
Bernhard

>Edward,
>
>Junior,ChessTiger 14 and ChessGenius 7 could not find the solution to the second
>position in under 5 minutes on my AMD 1400 with 512 MB RAM.
>
>These programs must process knight moves in the same way.
>
>TJF
>
>On December 05, 2002 at 00:38:18, Eduard Nemeth wrote:
>
>>The WM-Test position (Gurevich-HJS in CSS) Nr. 55 is this:
>>
>>[D]5b2/p2k1p2/P3pP1p/n2pP1p1/1p1P2P1/1P1KBN2/7P/8 w - - 0 0
>>
>>Fritz 8 have find here the nice win move 1. Nxg5!! after few minutes only!
>>
>>But Today I read in CSS, and what I must seen?
>>A very interesting another position!
>>
>>THE NEW TEST POSITION:
>>
>>[D]5b2/p2k1p2/P3pP1p/n2pP1p1/1p1P2P1/1P1KB2N/7P/8 w - - 0 1
>>
>>Analysis by Fritz 8 (128 MB für hashtabellen):
>>
>>1.Kc2 Sc6 2.Kd3 Sb8 3.Sxg5 hxg5 4.Lxg5 Sc6 5.h4 Sa5 6.Kc2
>>= (0.00) Tiefe: 17/38 00:00:15 8893kN
>>1.Kc2 Sc6 2.Kd3 Sb8 3.Sxg5 hxg5 4.Lxg5 Sc6 5.h4 Sa5 6.Kc2
>>= (0.00) Tiefe: 18/40 00:00:27 15870kN
>>1.Kc2 Sc6 2.Kd3 Sb8 3.Sxg5 hxg5 4.Lxg5 Sc6 5.h4 Sa5 6.Kc2
>>= (0.00) Tiefe: 19/41 00:00:47 27678kN
>>1.Kc2 Sc6 2.Kd3 Sa5
>>= (0.00) Tiefe: 20/44 00:01:45 65081kN
>>1.Kc2 Sc6 2.Kd3 Sa5
>>= (0.00) Tiefe: 21/44 00:02:57 110426kN
>>1.Kc2 Sc6 2.Kd3 Sa5
>>= (0.00) Tiefe: 22/46 00:05:55 218095kN
>>1.Kc2 Sc6 2.Kd3 Sa5
>>= (0.00) Tiefe: 23/52 00:12:03 459396kN
>>
>>:-))
>>
>>"The motiv with Nxg5!! is egual" in both positions!
>>
>>But in the new position Fritz 8  never can find the nice move 1. Nxg5 !
>>
>>Hopla! :-))
>>
>>Can Your program find this move 1. Nxg5  in the “new position”?
>>
>>Here a analyes by Ruffian 1.0.1:
>>
>>
>>Engine: Ruffian 1.0.1
>>von Perola Valfridsson
>>
>>15.01	 0:01 	-0.71 	1.Kc2 Sc6 2.Kd3 Sb8 3.Sg1 Sxa6 4.Sf3 Sc7 5.Lc1 a6 6.h3 Sb5
>>7.Ld2 Kc6 8.Le3 (790.534) 422.7
>> 16.01	 0:04 	-0.66 	1.Kc2 Sc6 2.Sf2 Sb8 3.Sd3 Sxa6 4.Ld2 Kc6 5.Kd1 Kb5 6.Ke2
>>Sb8 7.Ke3 Sc6 8.h3 a6 (1.705.226) 425.2
>> 17.01	 0:11 	-0.71 	1.Kc2 Sc6 2.Sf2 Kc7 3.h3 Kb6 4.Se4 Kxa6 5.Sd6 Lxd6 6.exd6
>>Sb8 7.Kd3 Kb5 8.Ld2 Sd7 9.Le3 Sxf6 (4.917.537) 421.0
>> 18.01	 0:25 	-0.69 	1.Kc2 Sc6 2.Sf2 Sb8 3.Sd3 Sxa6 4.Ld2 Kc6 5.Kd1 Kb5 6.Ke2
>>Sc7 7.Ke3 a5 8.Sb2 Kc6 9.Sd3 Sb5 (10.826.667) 422.5
>> 19.01	 0:42 	-0.66 	1.Kc2 Sc6 2.Sf2 Sb8 3.Sd3 Sxa6 4.Ld2 Kc6 5.Kd1 Kb5 6.Ke2
>>Sb8 7.Ke3 Sc6 8.h3 Sa5 9.Sc1 Kc6 10.Kd3 (17.914.602) 419.2
>> 20.01	 1:09 	-0.72 	1.Kc2 Sc6 2.Sf2 Sb8 3.Sd3 Sxa6 4.Ld2 Kc6 5.Kd1 Kb5 6.Ke2
>>Sb8 7.Ke3 Sc6 8.h3 Sa5 9.Sc1 Kc6 10.Kd3 a6 (28.943.436) 417.6
>> 21.01	 2:29 	-0.72 	1.Kc2 Sc6 2.Sf2 Sb8 3.Sd3 Sxa6 4.Ld2 Kc6 5.Kd1 Kb5 6.Ke2
>>Sb8 7.Ke3 Sc6 8.h3 Sa5 9.Sc1 Kc6 10.Kd3 a6 11.Le3 (61.176.673) 408.9
>> 22.01	 4:36 	-0.72 	1.Kc2 Sc6 2.Sf2 Sb8 3.Sd3 Sxa6 4.Ld2 Kc6 5.Kd1 Kb5 6.Ke2
>>Sb8 7.Ke3 Sc6 8.h3 Sa5 9.Sc1 Kc6 10.Kd3 a6 11.Le3 Kd7 (112.167.163) 405.7
>> 22.11	60:39 	-0.37++ 	1.Sxg5 (1.363.634.315) 374.6
>>
>>Ruffian find it on my PC after 60 Minutes on P600. Hard!
>>
>>Eduard



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