PlaySudoku.us
Evil · Puzzle #799
6
7
5
1
9
9
8
3
2
1
4
8
4
8
3
7
8
1
9
4
6
3
6
4
The 'Skyscraper' technique links two X-Wing candidates via a shared column — advanced but powerful on expert grids.
The 'Skyscraper' technique links two X-Wing candidates via a shared column — advanced but powerful on expert grids.
"Problems worthy of attack prove their worth by fighting back." — Piet Hein
"Problems worthy of attack prove their worth by fighting back." — Piet Hein