Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. The bottom left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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