Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. Column 5 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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