Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. Column 8 is invalid. The bottom right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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