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Subject: Re: Correction

Author: Uri Blass

Date: 01:59:54 08/21/01

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On August 21, 2001 at 04:34:55, Jouni Uski wrote:

>On August 21, 2001 at 04:03:29, Michel Langeveld wrote:
>
>>On August 21, 2001 at 03:13:46, Jouni Uski wrote:
>>
>>>On August 21, 2001 at 03:03:56, Jouni Uski wrote:
>>>
>>>>How is it possible, that Crafty lost in even or better position? Bob, any
>>>>explanations?
>>>>
>>>>Jouni
>>>>
>>>>PS. I hope, that Crafty finally shows it's class - probably it betters
>>>>from London 2000 14/16 position at least...
>>>
>>>11-12/14 actually.
>>>
>>>Jouni
>>
>>The major error was because Crafty refused to play f4 on move 24.
>>Crafty openend the position and so black could came back.
>>All pieces of him who were wothless became usefull.
>>
>>The difference between f4 and the played move were only 3/100 of a pawn.
>>If Crafty had searched 7 minutes f4 would have been played.
>>
>>Michel
>
>May be, but even after move 40 Crafty has equal position with free passed pawn!
>How did it still lose?
>
>Jouni

Junior7 does not agree that the position was equal after move 40.
It says that black had a small advantage

I agree that most humans will prefer white but maybe there is a program with a
better evaluation functions than them.

Crafty 18.10X - Deep Junior 7
[D]6k1/5pp1/5n2/2Bp4/1P1P3Q/3q1P2/4r2P/5R1K w - - 0 1

Analysis by Junior 7:

41.b5 Qxb5
  µ  (-0.80)   Depth: 3   00:00:00
41.Qg5 Rxh2+ 42.Kxh2 Qxf1
  ³  (-0.67)   Depth: 3   00:00:00
41.Qg5 Rxh2+ 42.Kxh2 Qxf1 43.Be7 Qxf3
  µ  (-0.90)   Depth: 6   00:00:00  5kN
41.b5 Qe3 42.b6
  µ  (-0.73)   Depth: 6   00:00:00  6kN
41.Qg3 Nd7 42.Rg1
  ³  (-0.46)   Depth: 6   00:00:00  9kN
41.Qh3!
  ³  (-0.37)   Depth: 6   00:00:00  10kN
41.Qf4 Ne8 42.Rg1 Qc2
  ³  (-0.36)   Depth: 6   00:00:00  19kN
41.Qf4 Ne8 42.Rg1 g6 43.Qg3
  ³  (-0.28)   Depth: 9   00:00:00  355kN
41.Qf4 Ne8 42.Ra1 Rf2 43.Kg1 Rxf3 44.Qe5 Qg6+ 45.Kh1 Nf6
  ³  (-0.38)   Depth: 12   00:00:06  4497kN
41.Qg3 Ne8 42.Re1 Qd2 43.Rg1 Qe3
  ³  (-0.26)   Depth: 12   00:00:08  5580kN
41.Qg3 g6 42.Qd6 Re8 43.Kg1 Qe3+ 44.Kh1 Qe2 45.Kg1 Kg7
  ³  (-0.30)   Depth: 14   00:00:17  12067kN
41.Qg3 Nh5 42.Qg4 g6
  ³  (-0.30)   Depth: 16   00:01:18  54059kN
41.Qh3 g6 42.Qh6 Nd7 43.Qh3 Qd2 44.Bd6 Re6 45.Bg3 Qe2 46.Rf2 Qd1+ 47.Rf1 Qxd4
  =  (-0.24)   Depth: 16   00:02:03  84396kN

(Blass, Tel-aviv 21.08.2001)

Uri



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