You can either get them via SpotPass or get them from your friends with them. But you can't get them with Play Coins.
You can buy one (2 playcoins each) or you can get them by doing streetpass with people (1 piece from each person)
you simply have 2 3DS's. you can use them to make a streetpass every day that will help you with the mii quest and/or the puzzle swap!
Puzzle 26, Train Swap, Location: Broken Train. Please see Related link below for a walkthrough of puzzle 26.
Pal Park.
To get a new panel you have to meet with someone over StreetPass and then you can choose one of their pieces of any panel they have. Sometimes, especailly when new panels are released, you can get new pieces via SpotPass and special Miis
Puzzle No 26: Train Swap, Location: Broken Train You get a Hamster toy for solving this puzzle Please see the related link below for a walkthrough of this puzzle.
To solve a 6-piece cross puzzle, start by identifying the center piece and placing it in the middle. Next, arrange the surrounding pieces so that they connect to the center in a cross shape, ensuring that adjacent edges match in color or pattern. Rotate and swap pieces as needed, keeping track of which pieces fit where. Finally, make adjustments until the entire cross is complete and all pieces are correctly oriented.
swap your old ds in game and you will get some money taken of the orgianal price When can i swap my old one in and how much will get taken off ?
Puzzle No 119: Swap to Unlock. Find three hint coins, Tap on the doors of the Layton's car. Please see the related link below for a walkthrough of this puzzle.
so you can swap stars for points
ill give you my lvl 82 for it
Puzzle No 129: Block Blockade, Professor Layton and the Unwound Future. Please see the Related link below for a walkthrough of puzzle.