Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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