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Subject: Re: Neat End Game Study...

Author: Sune Fischer

Date: 16:31:24 01/01/03

Go up one level in this thread


On January 01, 2003 at 18:58:10, Uri Blass wrote:

>On January 01, 2003 at 18:30:19, Dieter Buerssner wrote:
>
>>On January 01, 2003 at 15:06:35, Art Basham wrote:
>>
>>>Interesting End Game Study..
>>>from "Chessboard Magic"
>>>by Chernev...1943
>>>
>>>2b5/8/3P4/8/B1k5/1N6/2N4b/K7 w - -
>>
>>Yace, P4, 2.53 Ghz, HTs cleared after every move to give reproducable times.
>>
>>>1.  b3-d2+   c4-d3
>>
>>1. Nd2+ after 1 second, score +5 after 4 seconds
>
>For movei it is even more easy.
>2728 nodes to show Nd2 in the pv.

Frenzee v.140g is even faster: 1147 nodes to find 1. Nd2+ Ke3 in the pv.
(you don't count nullmoves either?)

>>
>>>2.  c2-e1+   d3-e2
>
>
>>
>>2. Ne1+ immediately, score +6 after 4 seconds
>
>Ne1+ is shown from the first iteration.

second iteration, but still only 245 nodes

>>
>>>3.  a4-b5+   e2-d1
>
>12581 nodes to converge to Bb5+

309 nodes, 2nd iteration.

>>3. Bb5+ immediately with score +5
>>
>>>4.  d6-d7    c8xd7
>>
>>4. d7 immediately with score +6.7
>
>5804 nodes for d7.

d7 in 499796 nodes, 1.3 sec, score 6.23

>>
>>>5.  b5xd7    h2-e5+
>>
>>5. Bxd7 immediately with score +6.7 (this one is very easy, of course)
>
>Bxd7 immediately

yes, 3 nodes.

>>>6.  a1-b1    e5-c3
>>
>>6. Kb1 immediately, score +7
>
>Kb1 from the first iteration

yes, 3 nodes again (but this time lucky move ordering I think)

>>>7.  d2-e4    c3xe1
>>
>>6. Ne4 immediately, score +7
>
>Ne4 from the first iteration.

Ne4 in 633 nodes, 3rd iteration.

-S.
>Uri



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