Sudoku hard online

Looking to play hard sudoku free, so here it is!

You can play online sudoku hard, save your game in progress or print the game puzzle.

A lot of options available to you as zoom, automatic backup, undo last move...

A sudoku hard is a puzzle which can be solved with more sophisticated methods.

For more difficult sudoku there are the expert level and evil level!

Zoom :
5
18657
5489
38
237
54
6145
82691
4

 1sudoku.com   -   n° 320505   -   Hard

Game Mode :
Option :
Change the level :