+1. This is especially true for "Experienced #5" which required me to figure out about 4 letters out of 16 using the regex, the rest being obvious from the clue

+1. This is especially true for "Experienced #5" which required me to figure out about 4 letters out of 16 using the regex, the rest being obvious from the clue and the other 4 letters. All the hitchhikers ones are pretty obvious though.