Sudoku number 25

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.

15 4 6 9 23 87 
9263 7 85 1 4 
7 3 8 54 1 9 62 
26 9 48 3 17 5 
58 7 12 94 3 6
4 1 37 5 68 2 9
8 72 9 3 46 5 1 
3 9 1 26 5 748
6 45 81 7 2 9 3

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