Programming Scavenger Hunt

about 10 years ago, I did a programming scavenger hunt with my colleagues which was good fun. Every next challenge required you to program a solution. Only when you found the solution, you could move on to the next one. It was very varied. 1 challenge required you to beat the computer in rock/paper/scissors, one required you to look at the ascii codes. Based on this description, is there anybody that can tell me the name of this scavenger hunt?