Welcome to the Redstone Labratories, where we have quite a predicament.
Your job is to open up the iron door on the other side of our laboratory, by completing an awfully over-complicated redstone puzzle. With unique redstone components used like "and gates", minecart tracks and even a flying chicken, this puzzle is sure to be one to stump you to the limit.
In our laboratories, you don't even need to change your settings! We're cool here. JUST PLAY IN GAMEMODE 2!
We are not tested for multiplayer, but you know what, we see know reason why it shouldn't work.
Even though we have a superbly over-complicated puzzle, it should only take you 5-15 minutes. (Depending on if you're a noob or not.)