Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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