In this
Room and Reason puzzle, not all of the rooms are rectangular. The white cells may not pass over two or more
boundaries between consecutive rooms in an uninterrupted horizontal or vertical line (even if this entails exiting a room and then entering it again -- this is more specific than the usual rule which states that the white cells may not exceed two consecutive
rooms in an uninterrupted horizontal or vertical line). The rules are otherwise unchanged.

It's tough thinking of things to do with these rules which
Thomas Snyder and
MellowMelon haven't already done.