Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. Column 5 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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