The save of the current game will be lost.
6
5
2
9
3
8
5
4
4
6
1
5
2
8
3
8
9
6
3
5
7
3
1
9
1
2
Warning, there are errors!
To display the candidates there must be no errors.
Do you want to delete them automatically?
You have a game in progress!
Would you like to resume it?
1sudoku.com Sudoku - Expert - n° 413038
Advertising keeps this Sudoku site alive and we have minimized it to make the game more enjoyable for you.
But the animated ads can interfere with the resolution of the grid, so you can Deactivate ✂ .
Expert Sudoku
As the name suggests, you are now a sudoku expert! In an expert sudoku grid, you will need to employ advanced solving techniques, knowing that all grids are solvable by logic only. Expert sudoku uses advanced techniques a little more often than hard sudoku.
How do I play Sudoku?
The goal is to fill the grid, so that each row, each column and each region of 3x3 cells contain all the digits from 1 to 9.
Glossary of game options:
Clear the contents of the box
Undo the last move
Visual aid
Redo last move
Automatic selection of boxes on hover (on computer)
Show all possible candidates on the grid
Show / Hide solution
Why play expert sudoku?
Free Online Expert Sudoku is a great training in difficult techniques and is the last step before you face the evil Sudoku.
This is a high level sudoku that is loved by sudoku professionals.
Play sudoku with 5 difficulty levels: easy, medium, hard, expert, evil