Activity 10 days
September 16, 2013
28 solves
September 15, 2013
25 solves
September 14, 2013
16 solves
September 13, 2013
22 solves
September 12, 2013
22 solves
September 11, 2013
28 solves
September 10, 2013
17 solves
September 09, 2013
62 solves
September 08, 2013
47 solves
September 05, 2013
18 solves