PlaySudoku.us
Easy · Puzzle #553
2
1
6
5
8
3
3
5
2
9
1
4
7
1
4
3
2
6
7
6
9
2
3
5
8
3
1
5
4
6
9
7
4
9
6
5
7
5
7
3
4
1
1
6
2
4
"It is not enough to have a good mind; the main thing is to use it well." — René Descartes
"It is not enough to have a good mind; the main thing is to use it well." — René Descartes
A solved cell is most useful in whichever house it brings down to one empty cell.
A solved cell is most useful in whichever house it brings down to one empty cell.