Pro Tip

The Swordfish technique extends X-Wing to three rows and three columns — rare but decisive on expert grids.

Pro Tip

The Swordfish technique extends X-Wing to three rows and three columns — rare but decisive on expert grids.

PlaySudoku.us
Medium · Puzzle #648
✓ Completed! 👍
8
3
6
9
2
5
1
7
3
9
1
2
3
1
4
6
5
9
7
6
5
4
7
1
9
8
4
1
6
1
4
7
00:00
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Food for Thought

"Anyone who stops learning is old, whether at twenty or eighty." — Henry Ford

Food for Thought

"Anyone who stops learning is old, whether at twenty or eighty." — Henry Ford