NumberPlace∞

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HOW TO PLAY:
Complete this grid by placing the digits 1 to 9 exactly once, and only once, in each horizontal row and in each column. Also, each digit should only appear once in every 3x3 shaded or white mini-grid in the puzzle.

It is also known as Sudoku.

you can creat question but it have a requirement
It make by infinity.

difficulty is five‐grade system and one grade have 50question