Challenge Yourself

Complete a Medium puzzle using only box-based logic — no row or column scanning allowed.

Challenge Yourself
✓ Completed! 👍
6
4
3
1
6
9
7
3
1
2
3
4
6
9
1
7
4
3
1
5
7
9
5
9
7
6
8
Sudoku Trivia

Dell Magazines published Sudoku as 'Number Place' for decades with minimal fanfare before Nikoli transformed it into a cultural phenomenon.

Sudoku Trivia