You can zoom in/out puzzles that consist of 140/280/630 pieces by following these steps:

1. Tap on the "MENU" button located in the bottom right or left corner.

2. Tap on "ZOOM."

When you zoom in on puzzles with 140/280 pieces, they are divided into 4 parts. Puzzles with 360 pieces can be divided into 4 or 9 parts. You will be automatically moved to the next section as soon as you finish the previous one. Please note that puzzles with 140/280/630 pieces are zoomed in by default, and you can zoom them out using the instructions above.