You need a tool to create sudoku tasks, not to solve them.

    1 answer 1

    1. Take obviously the right sudoku.
    2. Shuffle columns within blocks.
    3. Shuffle column-blocks.
    4. Shuffle lines within blocks.
    5. Shuffle line-blocks.
    6. Renumber the numbers.

    The resulting task will be equivalent to the original, but outwardly it will look different.