Sudoku Corrections

Sudoku Correction

Change some digits in the grid so that every row, every column, and every 3x3 box contains the digits 1 through 9 and so that no pair of changed digits is horizontal or vertical adjazent (diagonally adjazent changed cells are allowed).

Sudoku Correction

Sudoku Correction

Change some digits in the grid so that every row, every column, and every 3x3 box contains the digits 1 through 9 and so that no pair of changed digits is horizontal or vertical adjazent (diagonally adjazent changed cells are allowed).

Sudoku Correction

Sudoku Correction

Change some digits in the grid so that every row, every column, and every 3x3 box contains the digits 1 through 9 and so that no pair of changed digits is horizontal or vertical adjazent (diagonally adjazent changed cells are allowed).

Sudoku Correction

Rotary Sudoku

Turn 5 times a 3x3-box 90 degree to the left or right so that after that each row, column and 3x3-box has exactly one of each digit.

Rotary Sudoku

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