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Sudoku is a logic-based placement puzzle, also known as Number Place in the United States. The aim of the canonical puzzle is to enter a numeral from 1 through 9 in each cell of a 9×9 grid made up of 3×3 subgrids, starting with various numerals given in some cells. Each row, column and region must contain only one instance of each numeral. Completing the puzzle requires patience and logical ability.

SUDOKU puzzle for beginners

Sudoku puzzle
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SUDOKU puzzle for intermediate players

Sudoku puzzle
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SUDOKU puzzle for experts

Sudoku puzzle
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