PlaySudoku.us
Medium · Puzzle #106
4
6
5
5
1
3
8
3
7
2
4
8
4
6
9
4
7
4
1
8
1
7
6
3
6
9
2
7
4
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3
8
1
9
2
"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
Before using pencil marks, see how far you can get on a hard puzzle with pure mental tracking.
Before using pencil marks, see how far you can get on a hard puzzle with pure mental tracking.