PlaySudoku.us
Easy · Puzzle #201
6
7
1
1
5
2
9
6
1
6
5
8
3
2
7
5
1
2
7
6
5
1
9
7
4
6
9
8
3
7
5
2
3
4
2
7
9
8
7
2
5
4
6
Network flow algorithms can solve special classes of Sudoku more efficiently than general backtracking.
Network flow algorithms can solve special classes of Sudoku more efficiently than general backtracking.
"The mass of men lead lives of quiet desperation." — Henry David Thoreau
"The mass of men lead lives of quiet desperation." — Henry David Thoreau