Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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