The Regional Chief Judges (Andy Harrington, Gabriel Foust, and Michael Goldwasser) rank the problems roughly as follows, with the author's name in parentheses:

Very Easy

Voting (Andy)

Mirror (Michael)

Easy

Judges' Time Calculation (Michael)

Moderate

Mad Scientist (Michael)
Egyptian Fractions (Gabriel)

Medium

Image Compression (Michael)
Queen Collisions (Andy)

Hard

Top This (Gabriel/Michael/Andy)

Very Hard

Quick Search (Andy)

There is a vast range of difficulties.  We expect most teams to get one or more of the easy ones.  Egyptian fractions is short to code, but does require knowing how to reduce to lowest terms efficiently.  Top This and Image Compresion require some thought and array manipulations.  Queen Collisions requires some thought about the algorithm to run fast enough.  Quick Search will hopefully provide a challenge to the best teams.  We expect a few teams to solve seven or eight problems, but very few to solve all nine.  

We need your help spreading out the work next year!  The addition of Michael Goldwasser this year was a boon.  More new blood would be even better!

Please submit a problem or volunteer to be a chief judge!