2.1

The tutorial is completely new. Instead of a small practice board, you now watch a real puzzle get solved from start to finish. It makes two mistakes along the way, shows you exactly why they're wrong, and backs them out. Tap to move at your own pace, or skip it entirely.

You can replay it any time from How to Play.

VoiceOver improvements on the tutorial: every step is spoken as it appears, invalid cells are announced by position, and cells read their location and state rather than state alone.