Extra Region

These net-shaped extra regions aren’t very compact, so it’s challenging to fit very many of them into a standard 9x9 grid. But I love the color!

I’m not sure I’ve ever seen a puzzle with a selectively-negative constraint like this. The grid is marked like a 9x9 checkerboard, and only on shaded cells, there’s a “local global” constraint, so if a shaded cell is not marked as minimum nor as maximum, that’s important information.

Each extra region is connected, even if only diagonally. This one should be slightly easier than the last.

Some puzzles include extra regions, but they’re usually square. Or diagonals, which are technically extra regions, and also straight lines. A nine-cell Renban line could be considered an extra region, and can be any arbitrary connected shape. These two regions are none of those.