Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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