New Puzzle Each Day
It's just like standard sudoku, but with diagonals! Each row, column, nonet, and diagonal must include exactly one copy of each number 1 through 9.
This version has a special puzzle for each day, too!
If you're new to the genre, consider trying normal sudoku on our website first.
Enjoy the Daily Diagonal Sudoku!
Microsoft Sudoku
Use simple logic to fill in the puzzle's nine rows and nine columns with numerals 1-9.
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Daily Sudoku
Indulge in your daily habit with all the bells and whistles from our classic Sudoku.
Mathdoku
KenKen players love MathDoku!
