Challenge Yourself

Solve a Hard puzzle and narrate each move aloud — explaining why forces you to understand, not just execute.

Challenge Yourself
✓ Completed! 👍
7
6
2
8
4
3
1
5
8
4
6
7
9
4
3
7
9
2
8
1
5
4
9
7
2
3
1
6
6
9
2
8
4
3
5
6
2
7
1
3
2
6
4
7
1
4
9
2
Did You Know?

In competitive Sudoku, top solvers can complete an expert-level puzzle in under 3 minutes.

Did You Know?