Saitek chess computer, beginner to advanced. Tracks all moves; 25 move take back; 64 playing levels including normal, infinite search, tournament, blitz, mate search, training; info mode displays moves computer is considering; coach mode, computer offers suggested moves; teach mode to study basic moves; study mode includes 20 classic games built into the computer; position mode allows confirming last overall position or setting a new position. Game memory, if turned off or paused, suspends current game but stores in memory. Display includes chess clock. Operates on 4 C batteries or with included adapter. Measures 13"w x10"d. Includes detailed instruction manual. Perfect operating condition. Board in like new condition, no scratches, marks, defects.