Kasparov Olympiad chess computer with pressure-sensitive board. Programmed with 39 skill levels (40 if you include the "infinite" level, where the computer searches indefinitely for its next move until it finds a forced mate or until it has searched all possible moves up to 8 ply and cannot find a mate) and three coach modes. Printed manual included. Requires 4 AA batteries. PIECES NOT INCLUDED (I lost them long ago). Any appropriately-sized pieces will work.