Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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