Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 8 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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