I have the game Sudoku. how many combinations can be made by random entering of numbers on the whole such that it makes unique combination in $3\times 3$ grid and $9\times 9$ also.
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@vadim123 yes. i got the answer from the link given by you where one of them has posted answer http://www.afjarvis.staff.shef.ac.uk/sudoku/sudoku.pdf – Shiva Saurabh Nov 20 '13 at 06:01
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for the case i know if the sudokus are made of blocks n x n the maximum possible sudokus (higher bound) are $ ((n^2 )!)^n $ – Jose Garcia Apr 07 '22 at 14:10