Author: Brian Richardson
Date: 13:53:46 05/14/00
Tinker's q-search lazy eval (material - max_pos_score)> beta return (like standing pat?), and (material + queen+pawn) <= alpha return (quasi-futility?) was working fairly well, until a K vs KBN endgame. Since it was not getting to the eval function, the special mating code was never used and Tinker ended up with a 50 move draw...Now I check for opponent's pieces <= one minor and skip. This was discussed in ICCA Vol 21 # 2 (Extended Futility and Dark Thought). I also have tried various regular futility, extended futility and razoring (as outlined in the ICCA article), but they did not seem to help, at least given Tinker's mix of searching algorithims. Anyone else getting "good" results with them?
This page took 0.01 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.