Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 4 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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