PlaySudoku.us
Hard · Puzzle #90
3
4
4
2
9
5
8
3
4
7
8
6
5
3
8
9
1
7
3
2
5
3
8
4
8
6
4
"Without mathematics, there's nothing you can do. Everything around you is mathematics. Everything around you is numbers." — Shakuntala Devi
"Without mathematics, there's nothing you can do. Everything around you is mathematics. Everything around you is numbers." — Shakuntala Devi
There are Sudoku variants with extra constraints: Killer Sudoku (cage sums), Diagonal Sudoku, and even 3D Sudoku.
There are Sudoku variants with extra constraints: Killer Sudoku (cage sums), Diagonal Sudoku, and even 3D Sudoku.