While constructing my first Ant Mill, I discovered some interesting patterns that I wanted to turn into their own puzzle. I also wanted to go for much sparser clue placement this time, which I think worked out nicely.
Rules: Shade some dominoes of cells. No two dominoes may touch orthogonally, but each domino must touch exactly two others by the corners such that all dominoes form a single loop. Cells separated by a square must both be shaded or both be unshaded. Cells separated by an X must not.