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! 👍
4
8
4
3
2
5
9
1
5
1
3
2
7
2
5
3
8
7
9
7
1
7
6
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