3
7
9
6
2
5
4
1
9
2
5
7
6
4
3
8
9
6
7
2
5
9
3
8
9
4
3
6
7
6
3
"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
"The hardest game to win is a won game." — Emanuel Lasker
"The hardest game to win is a won game." — Emanuel Lasker