Author: Andrew Williams
Date: 05:49:19 12/03/99
Over the last few days, I have been fascinated by the discussions on CCC about positional sacrifices. Some of the discussion has centred on the value assigned to the attack that is obtained after the sacrifice and I was wondering how other programs evaluated the position after Hossa's sac: r3q1k1/ppp1rp2/2n1b2Q/8/2P5/3B4/PPP2RPP/5RK1 b - - 0 2 This is after 1. Bxh6 gxh6 2. Qxh6 from the original position posted by Peter McKenzie. PostModernist's static evaluation of the position is presented below. Essentially, it thinks that White is winning by 0.71. The ATTACKTOTAL score is generated by analyzing the squares around the King to see how many of them are attacked and what sorts of pieces are attacking them. Please note that not all the factors that contribute to PM's score are included in the output below. Could other programmers post similar information? I believe that even an overall static evaluation would be interesting. Cheers Andrew Williams SCORE ANALYSIS BLACK to move MATERIAL -137 (Positive means WHITE has more material) W:19086 B:19223 Game stage M Actual moves played: 1 (halfMoves=1) Fifty move counter: 0 r=547 # # # q=1040 # k=15939 # o=103 o=106 o=103 # r=565 o=94 # # # # n=346 # b=346 # # Q=1022 # # # # # # # # # # P=101 # # # # # # # # B=344 # # # # P=103 P=103 P=98 # # R=553 P=103 P=115 # # # # # R=555 K=15993 # HCW=1 HCB=1 cannotCW=1 cannotCB=1 CCRW=0 CCRB=0 Piece Bonuses White=4 Piece Bonuses Black=-34 KINGEXPOSURE WHITE=3 KINGEXPOSURE BLACK=16 DANGERSQUARES WHITE=0 DANGERSQUARES BLACK=5 ATTACKINGFORCE WHITE=21 ATTACKINGFORCE BLACK=0 ATTACKTOTAL WHITE=240 ATTACKTOTAL BLACK=0 EVALUATION : 71 (positive means WHITE is winning)
This page took 0.02 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.