PlaySudoku.us
Hard · Puzzle #522
8
5
4
7
4
1
8
6
1
2
6
4
9
4
3
9
7
5
2
2
8
9
3
4
6
7
Set a personal best time today. Write it down. Tomorrow, try to beat it by one second.
Set a personal best time today. Write it down. Tomorrow, try to beat it by one second.
After applying any elimination technique, always restart your scan from the simplest techniques — a single elimination often unlocks a naked single.
After applying any elimination technique, always restart your scan from the simplest techniques — a single elimination often unlocks a naked single.