Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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