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Hard · Puzzle #968
9
3
2
5
8
9
1
4
2
2
5
4
3
8
1
2
2
4
5
6
7
3
6
2
9
7
"You can't put a limit on anything. The more you dream, the farther you get." — Michael Phelps
"You can't put a limit on anything. The more you dream, the farther you get." — Michael Phelps
There are 6,670,903,752,021,072,936,960 valid completed Sudoku grids — that's 6.7 sextillion.
There are 6,670,903,752,021,072,936,960 valid completed Sudoku grids — that's 6.7 sextillion.