Did You Know?

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

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

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

Chess Wisdom