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Subject: Re: perft records

Author: Uri Blass

Date: 09:03:44 09/06/04

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On September 06, 2004 at 11:45:29, Reinhard Scharnagl wrote:

>Uri,
>
>I have made a little additional test (without mate detecting):
>
>FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
>
>  +-*--b--c--d--*--f--g--*-+ MS Visual Studio C++ Version 13.10
>8 |[r][n][b][q][k][b][n][r]|
>7 |[p][p][p][p][p][p][p][p]| Perft Testseries
>6 |   :::   :::   :::   :::|
>5 |:::   :::   :::   :::   | (without caching)
>4 |   :::   :::   :::   :::|
>3 |:::   :::   :::   :::   | Test #:      00
>2 |<P><P><P><P><P><P><P><P>|
>1 |<R><N><B><Q><K><B><N><R>| Break Time 75.0 Sec.
>=>+-*--b--c--d--*--f--g--*-+
>
>Ply     Nodes    all (x)   (e.p.)    all (+)      (#)    Promot.    Castl. Sec.
>-------------------------------------------------------------------------------
>1          20          0        0          0        0          0         0    0
>2         400          0        0          0        0          0         0    0
>3        8902         34        0         12        0          0         0    0
>4      197281       1576        0        469        0          0         0    0
>5     4865609      82719      258      27351        0          0         0    0
>6   119060324    2812008     5248     809099        0          0         0    6
>7  3195901860  108329926   319617   33103848        0          0    883453  150
>-------------------------------------------------------------------------------
>
>It seems to be about 10% faster without checking for mates.
>
>Those 10% seem to be the prize if one wants to have also that information.
>
>Regards, Reinhard.

Thanks for this information
What is the prize for detecting checks?

I have a legal move generator but I detect checks today only during make move
and not during move generation.

Uri

Uri



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