Correcting mistakes
Certain moves involving arrows can be corrected. If you slowly swipe into a direction but start in the wrong direction, keep your finger onscreen and swipe in the correct direction before the shape vanishes. It will not be counted against you.
Shapes
Each shape has a specific action.
Double line circle: Tap twice.
Empty arrow: Swipe in the opposite direction than the one indicated by the arrow.
Full arrow: Swipe in the direction indicated by the arrow.
Full circle: Tap and hold.
Single line circle: Tap once.
