The Daily Sudoku (Arkadium)
A daily sudoku that gets harder from Monday to Sunday.
Every day: A new sudoku every day, the same grid for every player, easiest on Monday and hardest on Sunday. New puzzle: Once a day; Arkadium does not state the time.

The Daily Sudoku on Arkadium sets a new 9x9 sudoku every day. The puzzles follow the week, starting straightforward on Mondays and building to the hardest grid on Sundays.
About The Daily Sudoku (Arkadium)
The Daily Sudoku is one of Arkadium's free daily puzzles. Each day brings a new grid, and the difficulty follows the calendar: Monday's puzzle is the most straightforward and Sunday's the hardest, much like a newspaper crossword week.
The rules are standard sudoku: place the digits 1 to 9 so each row, column and 3x3 box holds each one once. Arkadium's guide walks through the basic strategies, from finding cells with a single possible digit to digits that can only go in one place in a row or box, and stresses logic over trial and error.
It is free in the browser with ads. It suits players who want a sudoku habit with a natural difficulty curve across the week.
How to play The Daily Sudoku (Arkadium)
- Open the day's sudoku.
- Find cells where only one digit can fit and fill them in.
- Look for digits that can appear in only one place in a row, column or box.
- Use elimination to clear candidates from related cells.
- Keep going until the grid is full; expect harder puzzles later in the week.
Tips
- Start the week on Monday's puzzle to warm up.
- Avoid trial and error; every grid can be solved by logic.
- On weekend puzzles, note candidates in each cell before committing.
Questions
Does The Daily Sudoku get harder during the week?
Yes. Mondays are the most straightforward and Sundays the hardest.
Is it free?
Yes. It is free in the browser on Arkadium, with ads.
Is there a new puzzle every day?
Yes, one new grid each day.
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