Langer's Sudoku Assistant

Invalid Sudoku!

Row 1 is invalid. Column 5 is invalid. The top left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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