"Wingdings, Wallace, wingdings?!" you shout into the phone as soon as he picks up. "Whoa, calm down, usually you appreciate puzzles. I mean, you're practically addicted to cryptograms." "Yeah, I know. Look, Wallace, this is serious. I need that container back." "You are being so weird today. You were just begging me to get rid of it for you." "Oh, PLEASE tell me that you didn't throw it out or something. Did you lose it??" "No, no. Calm down. I hid it. I didn't know what it was. I thought maybe it was drugs or something." "No, Wallace, it's not drugs. It's my eyes." "Your eyes?" "I really don't want to explain. Can you just bring the tupperware back?" "Sorry, no, I really can't. I just started my shift at work, and I already took a break to answer your call. I can't get it until after I get off." "I really can't wait that long, Wallace. Can you tell me where it is?" "I went for a walk through the woods killing time before work since you didn't want to hang out. I hid it in the hole at the base of a big tree with yellow tape and put a couple of rocks in front of it." "Which woods? Which tree?" "I have the coordinates written down. I sat down, figured them out, then had some fun. I thought maybe I'd want to find the container again later." "Well, I do want to find it. Can you tell me the coordinates?" "I'll send them to you from my Droid. Just don't be pissed at me, O.K.?" Wallace hangs up the phone before giving you a chance to respond. What did he mean by that? Your phone beeps with a new email, and when you open it you understand his comment immediately - in order to figure out the coordinates, you need to solve a sudoku. You're annoyed, surely, but not surprised - you did meet Wallace at a puzzle lovers convention, after all. Desperate, you try to channel your nervous energy into solving the puzzle as fast as you can - you'll have to go find that container!