Sudoku No. 109
1
7
5
6
1
7
2
4
9
7
2
1
5
8
7
7
3
6
7
5
2
8
4
6
9
2
8
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. 109, fiendishPoint Paper, /sudoku/109