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Medium · Puzzle #568
4
5
1
7
8
9
3
4
3
4
5
2
1
6
5
4
5
2
4
7
9
3
7
3
2
5
7
2
3
8
6
1
8
9
7
2
"Concentration is the secret of strength in politics, in war, in trade — in short, in all management of human affairs." — Ralph Waldo Emerson
"Concentration is the secret of strength in politics, in war, in trade — in short, in all management of human affairs." — Ralph Waldo Emerson
"Concentration is the secret of strength in politics, in war, in trade — in short, in all management of human affairs." — Ralph Waldo Emerson
"Concentration is the secret of strength in politics, in war, in trade — in short, in all management of human affairs." — Ralph Waldo Emerson