Tap a glowing strip to peel it into your tray. Once three strips of the same colour are in the tray they clear together and free up the space.

A strip that is pinned underneath another cannot be peeled until the one on top is removed. Only strips that are free will glow, and you will often need to rotate the parcel to reach them.

Drag to rotate the parcel and pinch or scroll to zoom. Rotating is essential, since the strip you need is frequently on a face you cannot currently see.

The run ends. Filling the tray with single strips of many different colours is the usual cause, so completing colours as you go rather than peeling whatever is easiest is what keeps you alive. An extra slot tool is available when you need it.