Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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