PlaySudoku.us
Hard · Puzzle #453
5
8
6
9
2
3
2
3
9
7
7
8
6
1
4
3
6
2
8
3
5
7
9
2
6
8
9
2
3
Sudoku is a constraint satisfaction problem — the same class of problems used in scheduling, circuit design, and AI planning.
Sudoku is a constraint satisfaction problem — the same class of problems used in scheduling, circuit design, and AI planning.
"God made the integers; all else is the work of man." — Leopold Kronecker
"God made the integers; all else is the work of man." — Leopold Kronecker