Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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