Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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