6
8
3
2
7
8
9
4
6
6
1
8
7
1
5
4
7
2
6
8
9
6
1
3
2
3
1
6
3
6
2
4
7
5
6
9
7
Try solving a Hard puzzle using only pencil marks — no digit entries until every candidate is mapped out.
Try solving a Hard puzzle using only pencil marks — no digit entries until every candidate is mapped out.
Try solving a Hard puzzle using only pencil marks — no digit entries until every candidate is mapped out.
Try solving a Hard puzzle using only pencil marks — no digit entries until every candidate is mapped out.