Did You Know?

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

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

"It is not enough to be a good player; you must also play well." — Siegbert Tarrasch

Chess Wisdom