Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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