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

 

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