Layton's Challenges is a set of puzzles only accessible from the Bonus tab and has special requirements to be unlocked. These puzzles are harder than anything else in the game, so you will need every bit of your puzzle-solving skills to find the solution.
Caution! This guide contains information about each puzzle including all three hints and the correct answer. If you do not want to see the solution to a puzzle and spoil the fun of figuring it out, scroll down carefully. The answers are hidden within the spoiler tags, so don't peek in them unless you're really stuck!
The Musician's House
This House will be unlocked once you collected all 10 Camera Parts and build it together, then you need to take 9 Photos and find every differences.
Puzzle 139
Puzzle 140
Puzzle 141
The Tea Master's House
You need to give Tea to 26 people to unlock this house.
Puzzle 142
Puzzle 143
Puzzle 144
The Animal Lover's House
You need to train the Hamster down to Level 0 to unlock the house.
Puzzle 145
Puzzle 146
Puzzle 147
The Sweetheart's House
The House will be unlocked once you beat the game and saved the game after the credit.
Puzzle 148
Puzzle 149
Puzzle 150
The Puzzle Doctor's House
Once you've solved all 150 puzzles in the game, then this last house will be unlocked.