Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 3 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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