Author: Uri Blass
Date: 00:38:18 09/04/00
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On September 03, 2000 at 21:59:21, Larry Griffiths wrote: >On September 03, 2000 at 11:31:48, Uri Blass wrote: > >>On September 03, 2000 at 11:17:50, Larry Griffiths wrote: >> >>>[D]3r2k1/p2r2p1/1p1B2Pp/4PQ1P/2b1p3/P3P3/7K/8 w - - bm e6;id "BT2450-27"; >>> >>>Best move is "e6", but my program keeps picking "Qxe4". >>> >>>What makes e6 the correct move? I only ran this positions to 12 plys. >>> >>>Larry. >> >>The line 1.e6 Rxd6 2.Qf7+ Kh8 3.e7 Rd2+ 4.Kg3 b5 5.exd8Q+ Rxd8 6.Qxa7 gives >>white a material advantage. >> >>Another possibility is 4...Bxf7? 5.gxf7 Rg2+? 6.Kxg2 Rd2+ 7.Kg3 so without >>extensions you cannot and only 12 plies your program cannot see that white is >>winning. >> >>This possibility is probably the reason that your program cannot see the right >>move. >> >>Uri > >I do have QSearch code now that does captures. It sure is depressing to see >folks get 15 plys here inside of a minute when I can only get 12 plys in 30 >minutes. Qsearch without more extensions is not going to help you because 7.Kg3 is not a capture in the line that I posted and the move after it is also not a capture. only move 8 of white in this line is a capture or a promotion. Uri
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