Not long after you pass by the southern entrance to Cycling Road, you run into Professor Birch. After a short conversation, he registers himself in your PokéNav so that you can get your Pokédex rated anytime.
The Trick House is located farther north, near the Route 103 junction. The building's owner, the Trick Master, is a fun-loving prankster who has crafted many entertaining tricks for travelers. A new challenge opens each time you earn a Badge. Don't let his hard work go to waste!
When you step inside, you can't shake the feeling that someone is watching you. The mischievous Trick Master is hiding somewhere! Search the entire room until you find him, when he accepts your challenge and disappears. Certain field moves are required for most of the mazes, so you will need to return later to complete the rest.
Inside the Maze
Once he leaves, examine the scroll on the wall to find a secret passage that leads to a devious maze. Navigate the maze and battle Trainers as you search for a rolled-up scroll with a secret code. Reach the back of the maze and examine the hanging scroll. Inscribe the code on the hidden door to open it. There's no going back, so be sure to find everything the maze has to offer before entering the next room!
Trick Master's Room
The Trick Master waits here for all challengers. Speak to him to receive your reward, then leave through the exit in the north wall. After the last challenge, you can find a hidden Nugget where the Trick Master had stood.
Rival Battle 3
Go east from the Trick House and pass beneath Cycling Road. Turn north and continue on until you meet May/Brendan again. It seems like ages since you last met, so prove to your friend how far you've come as a Trainer!
After the battle, May/Brendan hands you the Itemfinder, a special gadget that allows you to search the surrounding area more thoroughly to discover hidden items! Search the underpass for treasure as you continue on to Mauville City.
Route 103 (optional)
Back to Route 103! It won't take you back to Oldale Town before you earn more Badges, but there are a lot of Trainers here. It's a good idea to battle them all— it's excellent training for your upcoming Gym battle.