At 9:00 a.m. on the Saturday of the event, three secret ingredients will be revealed on the ingredients page. Teams will then have until 10:00 a.m. Sunday of the event to create two puzzles that somehow incorporate the secret ingredients, and arrive at the game HQ. Each puzzle must include at least one of the secret ingredients, and at least two of the secret ingredients must be used. There are no real limitations on what the secret ingredients could be. To give you some idea, the ingredients in the original Iron Puzzler were:
Pipe
The Queen of Spades
Twenty-Seven
Once your team finds out what the ingredients are, get going! You have 24 hours (plus one hour of driving allowance) to create your two puzzles. You probably want to get some sleep though, as your team will need their wits about them for the day of solving ahead.