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.

 

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

 

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