PlaySudoku.us
Hard · Puzzle #547
6
7
2
1
9
7
8
2
1
3
8
6
4
2
2
3
7
6
1
7
3
8
5
6
9
7
Solve an Expert puzzle in under 15 minutes. Study one new advanced technique before you begin.
Solve an Expert puzzle in under 15 minutes. Study one new advanced technique before you begin.
"Equipped with his five senses, man explores the universe around him and calls the adventure Science." — Edwin Hubble
"Equipped with his five senses, man explores the universe around him and calls the adventure Science." — Edwin Hubble