No Error Streak II
250 XP
Make no error for 20 problems.
20/20
Common
Recently completed by
Erich Otts 10k, 
Trent Otts 11k, 
1brain 10k, 
ming! 10k, 
Marcello Virzì 12k, 
himaji 11k, 
Yesca 3_- 8k,
and 9269 others.
