Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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