Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 7 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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