Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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