PlaySudoku.us
Medium · Puzzle #517
1
8
6
1
9
6
7
5
2
3
5
3
8
7
2
1
3
7
1
4
8
2
2
5
6
6
9
7
1
2
4
1
7
2
9
8
5
Look for digits that already appear 7 or 8 times on the board — they're the easiest to place last.
Look for digits that already appear 7 or 8 times on the board — they're the easiest to place last.
"The only impossible journey is the one you never begin." — Tony Robbins
"The only impossible journey is the one you never begin." — Tony Robbins