5
1
6
8
6
5
4
2
8
4
2
3
5
1
2
9
3
5
9
8
1
5
9
1
7
8
6
5
6
4
1
8
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.
"The roots of education are bitter, but the fruit is sweet." — Aristotle
"The roots of education are bitter, but the fruit is sweet." — Aristotle