Lives

What are lives? If you check the upper left side of your screen, you'll see a heart there. You can have 5 lives at max, and this determines how many re-tries that you can get to complete a puzzle. If you're not able to complete a puzzle within the amount of turns given, you will lose a life.

In order to get more lives, you'll either have to wait for 30 minutes in order to have it restored. You should be able to see the counter just beside the heart.

If you click the heart icon, you'll find the social media feature for lives. You can also connect your game to Facebook and invite friends to help you out, just in case they're also playing the game. You can send lives, and receive those as well.