Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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