Langer's Sudoku Assistant

Invalid Sudoku!

Row 2 is invalid. Column 8 is invalid. The top right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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