PlaySudoku.us
Medium · Puzzle #516
1
4
2
9
8
6
8
2
2
1
6
9
8
3
1
4
2
6
9
9
2
8
1
8
2
9
4
5
1
9
3
8
5
6
9
"Mathematics takes us into the region of absolute necessity, to which not only the actual world, but every possible world, must conform." — Bertrand Russell
"Mathematics takes us into the region of absolute necessity, to which not only the actual world, but every possible world, must conform." — Bertrand Russell
A Sudoku grid can be solved using only row and column logic, never needing box constraints — but it becomes exponentially harder.
A Sudoku grid can be solved using only row and column logic, never needing box constraints — but it becomes exponentially harder.