Partition the grid into disjoint “creatures”, according to the following rules:
- Each creature is defined as a shape of 4 connected branches that are each 1 cell wide.
- For each creature, one of the branches ends up with a HEAD (always clued) and the other three branches end up with LIMBS (whenever clued, their directions matter).
- A creature can never occupy a 2×2 region of cells and can never touch itself.
Examine the first example, then solve the other three puzzles.
The solutions are shown below.