Author: Peter Fendrich
Date: 06:13:38 01/08/03
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On January 08, 2003 at 08:58:08, Uri Blass wrote: >On January 08, 2003 at 08:42:20, Peter Fendrich wrote: > >>On January 08, 2003 at 04:51:15, Russell Reagan wrote: >> >>>On January 08, 2003 at 04:37:09, Peter Fendrich wrote: >>> >>>>You should know by now...-:) >>>>Did you find out what your perft problem was? >>> >>>No, but it's fixed :) I re-worked the way I handled castling rights and made >>>sure I was updating them correctly in special cases (like when a rook is >>>captured, remove its castling rights), and it worked, so it must have been >>>something with the castling rights, but I never nailed down exactly what it was. >>>I changed several things (mostly those special cases) and it worked, so it must >>>have been one of those cases (or several) that got fixed. Thanks for your help >>>BTW ;-) >> >>In that case, you're ready for the "final" test! >>[D]r3k2r/p1ppqpb1/bn2pnp1/3PN3/1p2P3/2N2Q1p/PPPBBPPP/R3K2R w KQkq - >>1: 48 >>2: 2039 >>3: 97862 >>4: 4085603 >>5: 193690690 >>It tests all the rules in chess except for a few situations, like this one: >>[D]k7/8/8/2r1Pp1K/8/8/8/8 w - f6 >>exf6 e.p. is invalid >>1: 5 >>2: 75 >>3: 471 >>4: 7883 >>5: 50052 >> >>Regards, >>Peter > >Note that the only way to use movei for that test in this case is the follwoing >way. > >1)Give it > >k7/5p2/8/2r1P2K/8/8/8/8 b - - 0 1 > >2)play f7f5 in edit mode >3)ask it for perft 5. > >perft 6=860303 >perft 7=5650590 >perft 8=98654119 >perft 9=681267616 > >If I have no bugs > >Other people may calculate perft 10 and perft 11 to check if movei is right. > >Uri I'm sitting on a 300 MHz computer right now and even perft 9 would take forever but perft 7 gives the same result between Terra and Movei. I can't imagine that anything new will appear in this particular position after perft 9 except possibly overflows... Peter
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