Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 4 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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