Here’s a Mochikoro puzzle. The type features on next weekend’s WCPN contest.

Solve at pzv.jp.

Rules Shade some empty cells, such that the unshaded cells form rectangles. Each clue is contained within an unshaded rectangle of the given area, and each rectangle contains at most one clue. Furthermore, all unshaded cells must be connected by corner, and shaded cells can’t form 2-by-2 squares.