A very simple sudoku for any age.
Offline friendly for airplane mode.
There are different size of 6x6 and 9x9 with easy, normal, hard level.
Custom rules:
King rule: no two numbers are the same within the chess King move range.
Knight rule: no two numbers are the same within the chess Knight move range.
Cross rule: no two numbers are the same for the diagonal 9 numbers that are from top left to bottom right and from top right to bottom left.
Offline friendly for airplane mode.
There are different size of 6x6 and 9x9 with easy, normal, hard level.
Custom rules:
King rule: no two numbers are the same within the chess King move range.
Knight rule: no two numbers are the same within the chess Knight move range.
Cross rule: no two numbers are the same for the diagonal 9 numbers that are from top left to bottom right and from top right to bottom left.
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