Pro Tip

X-Wing: if a digit appears in exactly two cells in two different rows, and those cells share the same columns, you can eliminate that digit from those columns elsewhere.

Pro Tip
✓ Completed! 👍
9
8
1
2
7
1
8
4
8
5
1
7
6
9
2
3
1
5
9
7
3
6
2
4
Pro Tip

X-Wing: if a digit appears in exactly two cells in two different rows, and those cells share the same columns, you can eliminate that digit from those columns elsewhere.

Pro Tip