PlaySudoku.us
Easy · Puzzle #635
6
2
5
1
8
7
4
5
7
6
8
2
1
4
8
9
5
7
8
6
3
4
3
5
1
8
9
3
4
9
2
7
1
1
9
2
7
5
3
6
8
3
9
7
"Those who cannot remember the past are condemned to repeat it." — George Santayana
"Those who cannot remember the past are condemned to repeat it." — George Santayana
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.