Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 4 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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