Sudoku number 5

Difficulty:

Sudoku is a diagram of nine by nine boxes in which the numbers from 1 to 9 must be entered. The diagram of 9x9 is again subdivided into a box of 3x3. A number from 1 to 9 must be entered in each box.
In order to solve the puzzle, the boxes must be filled in such a way that in each row, every column and each box of 3x3 the numbers 1 to 9 only occur once.

You do not have to be a clever head, just a little patience and logical reasoning is needed to solve the puzzle.

396 5 1 4 72 8
1 789 3265 4
524 78 6 1 39
8 1 7 32954 6 
4 6 2 1 75 8 9 3 
9 5 34682 7 1 
639 8 5 74 12
78 1243 965 
24 56 9 1 3 87

First select a number or an edit function (erase for example) and then click in a box of the sudoku.
 
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