3
6
8
9
2
2
3
1
3
5
4
7
4
3
6
1
5
7
2
9
7
6
1
5
9
8
9
4
3
8
7
2
6
2
4
The Swordfish technique extends X-Wing to three rows and three columns — rare but decisive on expert grids.
The Swordfish technique extends X-Wing to three rows and three columns — rare but decisive on expert grids.
"It is better to keep your mouth closed and let people think you are a fool than to open it and remove all doubt." — Mark Twain
"It is better to keep your mouth closed and let people think you are a fool than to open it and remove all doubt." — Mark Twain