Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 3 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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