Challenge Yourself

Complete an Evil puzzle from start to finish in a single uninterrupted session. No breaks, no distractions.

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

A Sudoku puzzle's 'information content' can be measured: a minimal 17-clue puzzle encodes roughly 26 bits of information.

Math Insight