A friend came up with the rules, and I made this.
To help clarify the rules, here’s the solution to the puzzle my friend made, with the clue arrows colour-coded according to which chest they hint at.
The shaded arrowless cells in the corners are empty, i.e. don’t contain treasure.
Today’s puzzle is a Double Back. The size of almost all regions is a multiple of three, and the one exception to the rule looks like the number three. The colouring is for aesthetical purposes.
Here’s an easy/medium LITS. Getting the puzzle to wrap up was the hardest part.
EDIT: I modified two of the central regions, the puzzle solves more smoothly now.
Today’s puzzle might be somewhat vulnerable to metalogic due to the sparse clues, but I think the actual logic involved is pretty interesting.
Today’s puzzle is both a LITS and a two-star Star Battle. Of the two, the LITS is definitely easier.
Star Battle rules:
Here’s some more Clouds puzzles. The smaller is an easier starter, while the larger is the main course. I’d say it’s hard, but probably not as hard as the first Clouds I posted (I solved that one again recently, and I definitely didn’t remember it being that hard.)
Guess what? Here’s another 6×6-sized puzzle, a Magic Order Sudoku.