Play Coronet like an app — it opens from your home screen, no app store needed.On iPhone or iPad: tap Share , then Add to Home Screen.
Make a Lunation puzzle
Place a few suns and moons, test it, and send the link to a friend.
0 givensPlace givens, then Test.
Test results
Tap places the selected symbol; tap it again to clear. Keys: arrows move, S or 1 sun, M or 2 moon, Backspace or 0 clears.
What makes a good puzzle
Every Coronet puzzle is fair: it has exactly one solution, and you can reach it by logic alone, without guessing. Test checks both. If logic gets stuck, it tells you where, so you know where another given would help.
Fewer givens make a harder puzzle. Boards that need Lookahead rate Hard. The link only holds your givens, never the answer, so your friend can’t peek.