There are several different types of "?", "Unknown", "Mystery" or "Puzzle" geocaches out there in the game. For many of us, a number of these puzzles are, well, puzzling! I thought it would be good to get together for an hour and chat a little bit about the different types of Unknown caches and maybe offer a few tips to help break through the many codes, twists, and turns of the Big Blue Question Mark. We'll spend a little time chatting about puzzles, and quite possibly, a new cache will be made available for those of you who would like to head out and track down a smiley afterwards.