Tzaar is a combined stacking and capturing game. Every turn
consists of two moves, the first must
be a capturing move, and the second may be a capturing
move or a defensive move. You start with different numbers of
3 types of pieces. The pieces all have the same power, but
all three types have to be preserved. Overall, a
very nice balance of offense and defence is required.
Read the official
rules on the project Gipf web site.
Strong players haven't reported yet, but the bot is good enough to be a
challenge to beginners.