Top rating improvement of the month
Hunsudoku 325
_AtomicNeoN_ 293
Yury Volvovskiy 250
pafcio 199
redgreenfox_fixed 171
Top commenters of the month
O-le_o-le 22
Иван Грищенко 12
Anurag Sahay 6
Adam Bissett 5
GD 4

The puzzle below is a current daily puzzle. This puzzle is competitive - you have to register to solve it and participate in the daily competition. To register click Login link in the top right corner.

You can use the scores page to see the results of other competitors for this puzzle.

All the puzzles from the previous days are available at our archive page. Puzzles which are older than 5 days do not affect the score table and can be attempted without registration.

Diagonal Sudoku

Author: Andrey Bogdanov

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Fill in the grid with digits from 1 to 9 putting one digit per a cell. Each row, column, outlined area and both main diagonals should contain every digit exactly once.

Example puzzle

Grid control: Click at a cell reveals the value chooser. Click at the selected value changes the state of the cell. More details about grid control are at the help page.