Langer's Sudoku Assistant

Invalid Sudoku!

Column 8 is invalid. The top right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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