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! 👍
1
8
9
8
5
2
9
6
2
1
3
5
6
5
8
4
3
8
9
3
1
6
3
5
8
Did You Know?

The world record for solving an easy Sudoku is under 1.4 seconds, set in competitive speed-solving.

Did You Know?