Try to reach your supervisor. Click on a connected group of 3 or more items to remove the items just before your worker. Move your worker closer to the supervisor and again remove blocking items.
40 levels with 3D Mahjong in Black and White. Match 2 of the same free cubes: 1 white cube and 1 black cube. Cubes are free if they have two free adjacent sides. You can rotate your view.