Sudoku 4 x 4
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Sudoku 9 x 9
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Sudoku 4 x 4
Place a number in each empty square so that each row, each column and each 2 x 2 block contains all the number from 1 – 4
Place a number in each empty square so that each row, each column and each 2 x 2 block contains all the number from 1 – 4