Langer's Sudoku Assistant

Invalid Sudoku!

Row 2 is invalid. Column 1 is invalid. The top center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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