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Sudoku puzzle explanation

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.

Sudoku 24 -

9	5	1	2	6	8	7	3	4
8	2	3	4	7	1	5	9	6
4	6	7	5	9	3	1	8	2
7	8	4	1	2	6	3	5	9
3	1	5	7	4	9	2	6	8
6	9	2	3	8	5	4	1	7
5	4	9	6	1	2	8	7	3
2	3	6	8	5	7	9	4	1
1	7	8	9	3	4	6	2	5

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

solution print this solution

9	5	1	2	6	8	7	3	4
8	2	3	4	7	1	5	9	6
4	6	7	5	9	3	1	8	2
7	8	4	1	2	6	3	5	9
3	1	5	7	4	9	2	6	8
6	9	2	3	8	5	4	1	7
5	4	9	6	1	2	8	7	3
2	3	6	8	5	7	9	4	1
1	7	8	9	3	4	6	2	5

9	5	1	2	6	8	7	3	4
8	2	3	4	7	1	5	9	6
4	6	7	5	9	3	1	8	2
7	8	4	1	2	6	3	5	9
3	1	5	7	4	9	2	6	8
6	9	2	3	8	5	4	1	7
5	4	9	6	1	2	8	7	3
2	3	6	8	5	7	9	4	1
1	7	8	9	3	4	6	2	5

Difficulty:

Sudoku puzzle explanation

Sudoku 24 -

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9	5	1	2	6	8	7	3	4
8	2	3	4	7	1	5	9	6
4	6	7	5	9	3	1	8	2
7	8	4	1	2	6	3	5	9
3	1	5	7	4	9	2	6	8
6	9	2	3	8	5	4	1	7
5	4	9	6	1	2	8	7	3
2	3	6	8	5	7	9	4	1
1	7	8	9	3	4	6	2	5