Sudoku To Go! Keychain Game w/LCD Contrast (Orange)

Fun and fiendishly additive! This Sudoku To Go! is easy to play yet tough to master! It features four skill levels with over 1000 puzzles built-in,  3 difficulty levels for each grid and an adjustable LCD contrast! Simply fill each row, column and box with the number 1 through 9, without duplication! Get ready to be part of the craze with the Sudoku To Go! Order today!