Sudoku number 19

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.

6 153 4728 9 
2 7 3 96 8 5 4 1 
98 45 1 23 6 7
35 2 8 7 9 614 
8 961 2 4735 
7 4 1 6 53 9 2 8 
4 6 7 2 9 1 853
12 8 7 3 54 9 6 
5 3 9 4 86 1 7 2 

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