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Subject: Re: FRC aware chessviewer wanted - perft

Author: Reinhard Scharnagl

Date: 17:51:00 12/25/03

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Hi Federico! Nice to read from you here and: Merry Christmas!

On December 25, 2003 at 19:02:21, Federico Corigliano wrote:

>Maybe CompoChess: http://www.mailchess.de/engl/indexe.html

Well, I will check it. Thank you.

>But I don't tried it. Some Delphi components sources are available.
>
>A question to you:
>I rewrote some parts of my chess engine (Chispa) and I need to debug the FRC
>move generator (with normal chess works ok). Do you have some good FRC positions
>with perft numbers to make tests?

No sorry, I have not yet such perft numbers. I have calculated some for
traditional chess positions, because for me normal chess is only one of 960 FRC
variations.

I use to test SMIRF's move generator with a lot of mating problems, but still I
am missing some really FRC specific jobs, where Fischer castling is relevant.

But I think, your wish for to have such perft tests is a very good idea to be
added later to my FRC pages. I have discontinued the development of SMIRF
reaching the state of a quite quick mate solver: SmirfMateBeta, after having a
bad accident. But I will soon try to continue the SMIRF project.

Regards, Reinhard.

P.S.: Some old perft numbers from SMIRF (Athlon XP 1800+) will follow here:

Using FEN-0: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1

#########################
#bR bN bB bQ bK bB bN bR#
#bP bP bP bP bP bP bP bP#
#   --    --    --    --#
#--    --    --    --   #
#   --    --    --    --#
#--    --    --    --   #
#wP wP wP wP wP wP wP wP#
#wR wN wB wQ wK wB wN wR#
#########################

Perft     Nodes      (x) Castl. (+) Prom. (e.p.)  Time
[1]          20       0  0       0  0         0  0.016
[2]         400       0  0       0  0         0  0.015
[3]        8902      34  0      12  0         0  0.016
[4]      197281    1576  0     469  0         0  0.031
[5]     4865609   82719  0   27351  0       258  0.422
[6]   119060324 2812008  0  809099  0      5248 10.343

Using FEN-1: r3k2r/p1ppqpb1/bn2pnp1/3PN3/1p2P3/2N2Q1p/PPPBBPPP/R3K2R w
KQkq - 0 1

#########################
#bR --    -- bK --    bR#
#bP    bP bP bQ bP bB   #
#bB bN    -- bP bN bP --#
#--    -- wP wN    --   #
#   bP    -- wP --    --#
#--    wN    -- wQ -- bP#
#wP wP wP wB wB wP wP wP#
#wR    --    wK    -- wR#
#########################

Perft    Nodes         (x)   Castl.       (+)   Prom.   (e.p.)   Time
[1]         48          8         2        0        0       0   0.016
[2]       2039        351        91        3        0       1   0.016
[3]      97862      17102      3162      993        0      45   0.016
[4]    4085603     757163    128013    25523    15172    1929   0.359
[5]  193690690   35043416   4993637  3309887     8392   73365  15.875
[6] 8031647685 1558445089 184513607 92238050 56627920 3577504 684.157





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