Did You Know?

There are Sudoku variants with extra constraints: Killer Sudoku (cage sums), Diagonal Sudoku, and even 3D Sudoku.

Did You Know?
✓ Completed! 👍
6
1
3
2
9
8
8
9
2
5
2
6
1
7
1
9
4
4
6
8
9
6
5
3
Food for Thought

"Service to others is the rent you pay for your room here on Earth." — Muhammad Ali

Food for Thought