Sudoku disk has nine areas, each area is divided into nine small grid. In this eighty-eleven grid gives a certain number of known numbers and problem-solving conditions, the use of logical and reasoning, in the other spaces fill in the 1-9 number. Make each number in each row, every column, and every palace only once. This game is a comprehensive test for the ability to observe and reasoning , although the play is simple, but the number of arrangement is ever-changing, so many educators believe that Sudoku is a great way to train the mind.
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