
0 5 3  0 0 0  0 0 1
4 0 0  0 0 2  0 7 0
1 0 7  0 0 3  0 0 0

0 0 0  2 0 0  4 5 0
0 0 0  0 9 0  0 0 0
0 9 8  0 0 7  0 0 0

0 0 0  7 0 0  5 0 8
0 8 0  6 0 0  0 0 7
3 0 0  0 0 0  2 1 0

extreme
possible Xwing
never found Xwing but very tough
had to use kcell to solve

