Hi, Im new to the Forum but some of the more "interested" guards I know have a bit of a game going with their handheld machines to pass the time on PNB/Spare etc. Basically, you pick a restriction code like, for example, B1, and you have to find a ticket that has that restriction, (B1 - Cheap Day Return for Edinburgh to Carlisle). So using this as the reference for restrictions I will start of with restriction SM Outward Travel Valid on services due to arrive into London after 1120 Mondays-Fridays. Return Travel By any train (btw I don't know the answer, that's why it gets hard!) Whoever gets it first, gets the next go etc).