PlaySudoku.us
Hard · Puzzle #254
3
4
8
5
6
9
1
6
4
1
4
5
7
8
7
2
3
9
3
1
5
4
5
9
3
8
"The important achievement of Apollo was demonstrating that humanity is not forever chained to this planet." — Neil Armstrong
"The important achievement of Apollo was demonstrating that humanity is not forever chained to this planet." — Neil Armstrong
When a box has only two empty cells, you know exactly which two digits fill them.
When a box has only two empty cells, you know exactly which two digits fill them.