Complete and progressive 64 difficulty levels divided into 4 different play games Advanced Elo 1800 player rating system 16 LEDs horizontally and vertically show the moves played Training mode improvement indicating to the player whether the move just played is optimal or allowing the player to attempt a new move Knows the 50move rule pat and draw by repetition pawn promotion en passant capture Solve the mate in 5 moves 2 players mode or player VS computer mode MULTIMOVE level to referee a game between 2 players Functions included HINT to suggest a move TAKE BACK can go back up to 2 moves MOVE VERIFY SET UP Age grade 7 years and older Power supply 3 x LR6AA batteries not included or 9V 3000mA with positive direction adapter not included A good start 64 game levels including 5 beginners levels in which the computer encourages its opponent by deliberately sacrificing chessmen To master a learning mode where the computer indicates to the player whether a move is optimal or not Advanced ELO 1800 visualization of the played moves by LED luminous diodes