Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. Column 5 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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