Put in three-digit numbers to crack this extremely secure safe. No need to erase wrong answers... if you put in "1234", 234 could be written in for you. There's not time to put in every number methodically... You had better just mash the numbers real... real fast.
Reminder: You do NOT have to erase incorrect answers!
Much harder. You might want to make the instructions clearer for people who haven't taken the other. Also, in the instructions it says the safe is 1000 digits. Is this meant figuratively?