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Subject: Re: CT 15 and evaluation problem

Author: Kurt Utzinger

Date: 02:38:58 11/02/03

Go up one level in this thread


On November 02, 2003 at 04:54:06, Gian-Carlo Pascutto wrote:

>On November 02, 2003 at 03:44:09, Ricardo Gibert wrote:
>
>>On November 02, 2003 at 03:20:26, Kurt Utzinger wrote:
>>
>>>A good example where Chess Tiger 15 needs much more time than
>>>most other engines to evaluate the position as a draw:
>>>
>>>[D]8/8/r7/3K4/3Q4/5p2/5p2/6k1 b - - 0 1
>>>
>>
>>This is also a good example of a type of position of negligible practical >value.
>>I don't think CT15's programmer needs to worry about it at all.
>
>*cough* *cough* *cough*
>
>IsiChess - ChessTiger, Dutch Open 2003
>
>--
>GCP

IsiChess MMX - Chess Tiger
[D]8/1k6/p5q1/4P3/1P3P2/7Q/3K3p/8 b - - 0 1

Analysis by Chess Tiger 15.0: (P4 1.8/24 MB hash)

64...Qg1 65.e6 Qd4+ 66.Kc1 Qa1+ 67.Kd2
  µ  (-0.88)   Depth: 1   00:00:00
  -+  (-7.51)   Depth: 4   00:00:00  2kN
64...Qb1 65.Qd7+ Kb6 66.Qd6+ Kb5 67.Qc5+ Ka4 68.e6 Qf1
  -+  (-7.80)   Depth: 4   00:00:00  5kN
  -+  (-7.41)   Depth: 6   00:00:00  15kN
64...Qg1 65.Qd7+ Kb6 66.Qd8+ Kb5 67.Qa5+ Kc4 68.Qxa6+ Kxb4 69.Qb7+ Kc5 70.Qa7+
Kc4 71.Qa4+ Kd5 72.Qa8+ Ke6
  -+  (-8.02)   Depth: 6   00:00:00  47kN
  -+  (-7.80)   Depth: 15   00:02:16  55491kN, tb=187

(Utzinger, MyTown 02.11.2003)


IsiChess MMX - Chess Tiger
8/1k6/p5q1/4P3/1P3P2/7Q/3K3p/8 b - - 0 1

Analysis by Deep Sjeng 1.5:
***************************

64...Qg1 65.Qd7+ Kb6 66.Qd8+ Kc6 67.Qd6+ Kb5 68.Qb8+ Kc6
  ²  (0.40)   Depth: 3/12   00:00:00
  =  (0.21)   Depth: 5/18   00:00:00
64...Qf7 65.Kc3 Qxf4 66.Qd7+ Kb8 67.Qd8+ Ka7 68.Qd7+ Ka8 69.Qc6+ Kb8 70.Qe8+ Ka7
71.Qd7+
  =  (0.06)   Depth: 5/19   00:00:00
  =  (0.00)   Depth: 9/29   00:00:05  1986kN, tb=162
64...Qg1 65.Qd7+ Kb6 66.Qd8+ Kb5 67.Qa5+ Kc6 68.Qxa6+ Kd5 69.Qb7+ Ke6 70.Qc8+
Kd5 71.Qb7+ Ke6 72.Qc8+ Kd5 73.Qb7+
  ³  (-0.48)   Depth: 9/29   00:00:07  2593kN, tb=163
  =  (0.00)   Depth: 13/38   00:00:49  17560kN, tb=1597

(Utzinger, MyTown 02.11.2003)





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