This week, I'm starting with challenges that require the full game: specifically, puzzles on level 11 that can be solved in 10 moves.
The 3 codes of the puzzles are: 2921-11, 4471-11, and 4889-11.
To play these puzzles, you first have to unlock level 11 by solving puzzles on levels 1 to 10. Then you start a game with NEW GAME (in the main menu) and select CODE instead of a level to enter one of the codes.
For everyone, who doesn't own the full game, here is a surprisingly challenging level 4 puzzle that you can play with the demo version: 6008-04.
As always, please let me know what you think of these challenges.