Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 2 is invalid. The bottom left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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