permanent brain

This observation is in line with common human intuition that too strong or too weak opponents are not as valuable as the ones playing on approximately the same level. The weakest feature of KnightCap was playing in the opening phase. One possible remedy to this problem is the idea of “permanent brain” introduced in Crafty - the strongest publicly available freeware Chess program and a direct descendant of a former Computer Chess Champion - Cray Blitz.