No Error Streak II
250 XP
Make no error for 20 problems.
20/20
Common
Recently completed by
Aleta Perez 8k, 
小光小 11k, 
Donald Vo 9k, 
Dustin Angerhofer 11k, 
Erich Otts 10k, 
Trent Otts 11k
and 9277 others.
