This month, I'm publishing a new challenge each week. This time it's about solving level 4 puzzles with only 3 swaps. As you might know, all level 4 puzzles can be solved with 4 swaps. However, some of the procedurally generated level 4 puzzles may be solved with only 3 swaps.
Here are the 3 codes of this week's challenge: 5199-04, 8440-04, and 9964-04
To play these puzzles in the demo, you first have to unlock level 4 by solving puzzles on levels 1 to 3. 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.
Enjoy and please let me know what you think of this type of challenge!