Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. Column 7 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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