5
2
6
4
9
8
1
5
8
4
6
3
5
2
7
6
1
4
4
9
3
4
1
8
3
6
9
6
2
7
4
"To ask the right question is harder than to answer it." — Georg Cantor
"To ask the right question is harder than to answer it." — Georg Cantor
"Chess is mental torture." — Garry Kasparov
"Chess is mental torture." — Garry Kasparov