Sudoku number 15

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.

145398 72 6 
768 2 5 419 3 
9 32 16 7458 
2 1 6 5 83 94 7
47 391 2 8 65
85 9 47 6 3 1 2 
68 47215 39
3 9 7 64 52 81 
5 21 83 9 6 74

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