Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 4 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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