Langer's Sudoku Assistant

Invalid Sudoku!

Row 2 is invalid. Column 1 is invalid. The top center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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