PlaySudoku.us
Medium · Puzzle #997
1
5
4
6
3
1
8
5
6
2
4
1
3
7
6
8
4
7
2
9
1
6
6
7
4
1
5
3
6
7
9
3
Nikoli, the Japanese puzzle company that popularized Sudoku, requires all their puzzles to be created by hand — no computers.
Nikoli, the Japanese puzzle company that popularized Sudoku, requires all their puzzles to be created by hand — no computers.
Nikoli, the Japanese puzzle company that popularized Sudoku, requires all their puzzles to be created by hand — no computers.
Nikoli, the Japanese puzzle company that popularized Sudoku, requires all their puzzles to be created by hand — no computers.