PlaySudoku.us
Medium · Puzzle #643
9
1
8
6
6
2
3
4
2
1
7
9
1
3
4
6
3
5
7
9
6
2
8
7
8
2
9
1
9
8
7
3
8
1
4
"Make each day your masterpiece." — John Wooden
"Make each day your masterpiece." — John Wooden
SAT solvers — used in chip design verification — can crack any Sudoku puzzle in milliseconds.
SAT solvers — used in chip design verification — can crack any Sudoku puzzle in milliseconds.