Challenge Yourself

Can you identify the technique needed to make the next move before filling in any digit? Name it, then use it.

Challenge Yourself
✓ Completed! 👍
2
6
4
3
7
5
6
1
7
2
8
1
6
9
3
8
6
7
4
8
3
9
6
5
4
5
Challenge Yourself

Can you identify the technique needed to make the next move before filling in any digit? Name it, then use it.

Challenge Yourself