- colorization__hard
- counting__hard
- fetch_pick_and_place__hard
- jigsaw__hard
- matchstick_equation__hard
- matchstick_rotation__hard
- maze_2d__hard
- maze_3d__hard
- mental_rotation_2d__hard
- mental_rotation_3d_cube__hard
- mental_rotation_3d_objaverse__hard
- patch_reassembly__hard
- sliding_block__hard
- video_unshuffle__hard
- zoom_in_puzzle__hard