Sudoku No. 91
9
8
3
4
5
7
8
5
9
1
8
9
6
3
5
7
1
2
3
5
1
4
7
6
3
9
Fill every empty square with a digit from 1 to 9.
Each row, each column and each of the nine 3×3 boxes contains every digit exactly once.
The printed digits are fixed. Every puzzle has one solution and never needs a guess.
Sudoku No. 91, trickyPoint Paper, /sudoku/91