Author: Michael Henderson
Date: 10:11:38 09/20/04
Go up one level in this thread
On September 20, 2004 at 10:17:01, James Swafford wrote: >On September 19, 2004 at 23:47:24, Michael Henderson wrote: > >>On September 19, 2004 at 23:30:43, James Swafford wrote: >> >>>Someone recently posted that they verify their SEE with a >>>search (generating only moves to the target square). >>>I did that,and seems I caught one. :) >>> >>>See position below... does your SEE see the promotion? >>> >>> >>> >>>Problem 1: >>>8/7p/5k2/5p2/p1p2P2/Pr1pPK2/1P1R3P/8 b - - b3b2; >>> >>>parsing: b3b2...done. >>>correct move(s): b3b2 >>>gamestage: 3 >>>search time=10000 >>>FW Dpth Nd Cnt CSecs Score PV Line >>> 4& -> 1495 0 30 h7h5 h2h4 c4c3 b2c3 b3c3 >>>*** val=-400 (currval=-400; sv=-800); see=400 >>> >>>- - - - - - - - >>>- - - - - - - p >>>- - - - - k - - white to move >>>- - - - - p - - no ep >>>p - - - - P - - no castling rights >>>P - - - P K - P >>>- - p - - - - - >>>- - - q - - - R >>> >>>move h1d1 >>> >>>-- >>>James >> >>My SEE does not see promotions, so i get +400 SEE also. There are a large >>number of positions where SEE messes up...that you probably know. e.g Bxd5 isn't >>really +300, unless you detect pins to the king. >> >>[D]7k/2n3r1/8/3b4/8/5B2/6Q1/6K1 w - - 0 1 > > >My SEE says +310, though I do (or thought I did) detect >pins. My search verification says 0, though, so at >least my debug code works. :-/ > >-- >James Would search verification really return a negative number because white will lose the queen soon? What makes up a verification search? Michael
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