To play, you must merge identical items on the puzzle board at the bottom of the screen. Merging items creates higher-level items, which eventually form spools of colored thread. Once a spool is created, it appears in a slot above the puzzle board. You then drag the thread from the spool to the corresponding colored section on the knitting pattern at the top to fill it in. The level is complete once the entire knitting pattern is filled.
Be aware of obstacles on the board, such as ice blocks and locks. To break the ice, you must make a merge next to it. To remove a lock, you need to create a key by merging other puzzle pieces. The knitting pattern may have sections with question marks, which reveal their required color only after you start knitting on them.
A useful tip is to plan your merges to create the specific colors of thread needed for the pattern. Prioritize moves that clear obstacles to free up valuable space on the board. Since you have a limited number of slots for your thread spools, make sure to use them on the pattern to make room for new ones you need to create.