💡 Akari Light Run is coming! 🏃️✨

Presented by Anurag Sahay, this month-long Akari adventure will run from November 1st to November 30th, with a new Akari (Light Up) puzzle appearing every day.
Place your lights, illuminate the grid, and chase away those dark corners! 😎💡
And at the finish line, the brightest solver will earn the title of Akari Luminary! 🏆🌟

Good luck, and may your grids be bright and your solving times be short! 🧩💡

Top rating improvement of the month
shipopala_redemption 452
JZE 419
LJFrank 317
Puzzleist 278
TL 275

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.

Hundred Sudoku

Author: Andrey Bogdanov

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Fill in the grid with digits from 1 to 8 putting one digit per a cell. Each row, column and outlined area should contain every digit exactly once. Some rows contain grey cells. Digits in grey cells form numbers, sum of this numbers in a row should be equal to 100.

Example puzzle

More about this 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.