Author: José Carlos
Date: 04:14:56 11/15/02
Go up one level in this thread
On November 15, 2002 at 02:07:43, Nagendra Singh Tomar wrote: >I was expecting posts regarding the passed pawn status.. I am sorry I did'nt put >it in my email; but I am interested in other positional attributes other than >passed pawn bonus.. > >regds >tomar > >On November 15, 2002 at 01:54:17, Scott Gasch wrote: > >>On November 15, 2002 at 00:23:42, Nagendra Singh Tomar wrote: >> >>>Hi All, >>> I think this question has been asked in different forms in this forum but >>>I was less than satisfied, so I am putting the question once more. >>> >>>How much can be the maximum allowable difference in positional score of the two >>>sides ? >>> >>>i.e assuming BLACK during its search hits a position in the leaf and calls >>>evaluate, evaluate() finds that black's pieces are wonderfully placed and whites >>>pieces are pathetically placed but still black is say a bishop down. Is it >>>sensible to return a +ve eval score in this. >>>I mean can the maximum allowable difference in positional score be as high as a >>>bishop or knight's score. >>> >>>Comments ? >>> >>>tomar >> >> >>Having a passer that can run is a positional feature worth +(QUEEN-PAWN). >> >>Scott I don't have winboard or something to make FEN strings here, so I can't post diagrams, but I hope you'll figure in your mind: W: Nh1, Pf2, Pg3 B: Pf3, Pg4 White has a knight on h1, but it's worth nothing unless white can capture one of the black pawns. Another example: activity. W: Pd4,Pe5,Pf4,Rd1,Rf1 B: Pc4,Pd5,Pf5,Ne6,Rb2 Both sides have a defended passed pawn. Black rook in in seventh (active) and black knight attacks two pawns (active); both white rooks defend (passive). There're more examples, but I'm at work and the boss is around ;) As other posters have said, king attacks and unstopable passed pawns are usually the concepts that have higher positional values. José C.
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.