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Subject: Re: My new Hobby with Fritz = Zugzwang!

Author: Eduard Nemeth

Date: 09:32:49 08/29/02

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On August 29, 2002 at 11:15:25, Uri Blass wrote:

>On August 29, 2002 at 10:46:45, Volker Pittlik wrote:
>
>>On August 29, 2002 at 10:01:58, Eduard Nemeth wrote:
>>
>>...
>>>
>>>[D]1kB5/p1p5/P1P5/PKp5/P1P5/8/7p/6bR w
>>>
>>>
>>>Analysis by Fritz 7.008:
>>>
>>>1.Le6 Ka8 2.Lh3 Kb8 3.Lf5 Ka8
>>>  +-  (4.06)  Tiefe: 35/47  00:01:39  33456kN, tb=138
>>>1.Le6 Ka8 2.Lh3 Kb8 3.Lf5 Ka8
>>>  +-  (4.06)  Tiefe: 36/48  00:02:33  51206kN, tb=301
>>>1.Le6 Ka8 2.Lh3 Kb8 3.Lf5 Ka8
>>>  +-  (4.06)  Tiefe: 37/51  00:03:37  74332kN, tb=604
>>
>>
>>All engines I tested (Amy, Aristarch, Crafty, Comet, Dragon, LambChop, Nejmet,
>>Pepito, SOS, Tao and Yace) found a mate within a second. I tried Fritz and
>>confirm Eduard's post. What's wrong with Fritz here?
>
>Fritz is using null move in a more aggresive way.

YES then...

Analysis by Fritz 5.32:

1.Le6 Ka8 2.Ld7 Kb8 3.Lg4 Ka8 4.Le6 Kb8 5.Ld7 Ka8
  +-  (4.78)  Tiefe: 17/21  00:00:03  86kN
1.Lb7!
  +-  (4.88)  Tiefe: 17/21  00:00:03  95kN
1.Lb7 Lf2 2.Txh2 Ld4 3.Th6 Lf6
  +-  (#8)  Tiefe: 17/36  00:00:16  9379kN

!!!

Eduard

>
>I even know about cases when it has the right move but no pv because the move
>threats nothing.
>
>I know about no other program with that behaviour.
>
>Uri



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