The Fidelity Ultimate Chess Challenge

This handheld chess game uses Chessmaster 2100’s basic game engine. This
includes such items as en passant attacks for pawn, castling, check and
checkmate, and draws for various reasons. Move time limits are optional, and
the CPU’s thinking time can be specified. If you need a hint, you can press
the B button and the computer may or may not give you a hint. You can also
play against another human opponent, alternating.