Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 6 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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