PlaySudoku.us
Easy · Puzzle #751
7
1
5
4
6
9
6
7
9
5
1
9
3
2
1
6
4
9
8
3
6
7
5
2
5
2
3
8
9
1
7
9
5
3
4
6
5
3
9
8
1
9
4
2
1
5
2
4
3
9
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.
"What is a proof? It is a demonstration that a statement is necessarily true — a guarantee that no exception can exist." — Henri Poincaré
"What is a proof? It is a demonstration that a statement is necessarily true — a guarantee that no exception can exist." — Henri Poincaré