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Subject: Re: Testposition - The Royal Miracle

Author: Uri Blass

Date: 03:29:52 02/28/01

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On February 28, 2001 at 05:38:34, Enrique Irazoqui wrote:

>On February 28, 2001 at 05:11:30, Sune Larsson wrote:
>
>>
>>  [D]8/1p3p1p/p4P1k/P4P1p/6pP/6Pq/5P2/5K2 w - - 0 1
>>
>>
>>  True story this time. The above position happened in a free game between
>>  Dr J. Perlis and N.N., many years ago, in Germany I think. The good doctor
>>  was a generous man and played without a queen from the start. So it's not
>>  strange that he is missing one in the above position. And since we are
>>  careful, scientific people we shall have a closer look at it with Fritz.
>>
>>  Okey, white is a queen down, is standing in check right now, Fritz gives
>>  3 ways to go:
>>
>>  1.Ke2 -19.44
>>  1.Ke1 -19.75
>>  1.Kg1 -19.12
>>
>>  Guess it's time for a new game... In fact it is - because after
>>  1.Kg1! *black* is mated in 6 moves.
>>
>>  Sune
>
>Deep Fritz doesn't get it with normal settings. Try with Selectivity 0 and you
>will avoid null-move blindness.

It is not only because of the null move setting because Crafty that is also a
null mover has no problem to see the mate.

Uri



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