Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 2 is invalid. The bottom left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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