Nifty trick I saw in Stash and Weiss: keep track of an additional Zobrist key that only counts material (and count), so we have a trivial way of looking up whether the position is a known draw, or we can do some smarter stuff to analyze the position further. (Count pawns, look at the bishops, etc...)
Nifty trick I saw in Stash and Weiss: keep track of an additional Zobrist key that only counts material (and count), so we have a trivial way of looking up whether the position is a known draw, or we can do some smarter stuff to analyze the position further. (Count pawns, look at the bishops, etc...)