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