Author: Colin Frayn
Date: 16:08:18 08/10/00
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On August 10, 2000 at 16:17:47, Christoph Fieberg wrote: >Unbelievable, but true: >I composed a position which is mate in 1 and can easily found, but Fritz6 on >Pentium III, 500 Mhz and 32 MB Hash needs more than 1 hour to show it (excatly >1:03:17)!!! >How do other computers react? > >The position is >FEN: 8/8/pppppppK/NBBR1NRp/nbbrqnrP/PPPPPPPk/8/Q7 w - - 0 1 You're seriously telling me that top quality programs have to think about a mate in 1? Now either there's something wrong with the setup, or a bug in the program, or simply that's just bad programming. I don't see how a simple iterative deepening loop could ever miss a mate in one, regardless of null moves or extensions or otherwise. ColChess finds this mate in a total of 42 nodes, none of which it searches for more than a preliminary ordering evaluation. This all takes significantly under a milisecond. Have I missed some subtlety here? Cheers, Col
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