Challenge Pool

Most challenging: 11 6 20 19 21
Least challenging: 5 12 13 18 22
Most Flexible: 3 9 12 13 15
Least Flexible: 2 5 10 16 21
Most interesting: 1 7 13 23 18
Least interesting: 2 4 5 8 19
Top: 3 9 15
Bottom: 4 8 11