Author: Reinhard Scharnagl
Date: 00:29:16 10/18/04
Go up one level in this thread
On October 18, 2004 at 03:17:20, Reinhard Scharnagl wrote: >On October 17, 2004 at 22:58:35, William Bryant wrote: > >>I am reaching for straws here, but, knowing the experience on this board, >>someone might have had this problem too. >> >>My move generator comes up short of perft. >>Specifically, from the starting position it is 20 move short on perft 3. >> >>I get 20 at ply 1 >>I get 400 at ply 2 (20 responses) >>But I only get 8882 at ply 3 (reguardless of wether black starts first or white) >> >>I have checked all the special move, double pawn moves, ep moves, castling and >>can't seem to find >>the error. >> >>Any suggestions. >> >>William >>(BTW, this is a new engine for me, 64 bits wide for my new (hopefully) G5)) > >Try to have a more detailed statistic. You could specify the type of wrong >handled moves easier. Here is the way my Smirf creates results (P4 2.8 GHz): > >FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1 > > +-*--b--c--d--*--f--g--*-+ MS Vis. Studio C++ Vers. 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. >------------------------------------------------------------------------------- >01 20 0 0 0 0 0 0 0 >02 400 0 0 0 0 0 0 0 >03 8902 34 0 12 0 0 0 0 >04 197281 1576 0 469 8 0 0 0 >05 4865609 82719 258 27351 347 0 0 0.2 >06 119060324 2812008 5248 809099 10828 0 0 5.2 >07 3195901860 108329926 319617 33103848 435767 0 883453 137 >------------------------------------------------------------------------------- > >May be the (hopefully correct) numbers therein could be used for comparing >purposes. > >Regards, Reinhard. There seems to be a 20 move difference. As far as I could imagine there are 20 officer captures pawn moves that level. Does this work sufficiently? Reinhard.
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