PlaySudoku.us
Medium · Puzzle #520
1
5
8
9
9
4
7
6
8
5
4
7
2
6
1
3
9
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3
5
9
6
9
3
4
5
2
3
7
8
1
2
6
4
"It's not that I'm so smart, it's just that I stay with problems longer." — Albert Einstein
"It's not that I'm so smart, it's just that I stay with problems longer." — Albert Einstein
"A journey of a thousand miles begins with a single step." — Laozi
"A journey of a thousand miles begins with a single step." — Laozi