Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Go back and make a different choice.

 

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

 

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