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Features:1.Sudoku,Sudoku Game
2.Large LCD screen display
3.Over 10,000 puzzles built-in
4.Three levels:easy/hard/advance
5.Direct number pad input
6. Clock display
7.Power,Hints,Submit,Mute,Start/Pause,Cancel Key
8.Fill in the grid so that every row,every column,and every3*3 box contains the digits
from 1to9
Sudoku