if somthing a block is on to the number on it says how many blocks should be keeped in that verticel row if it on the side it says how many should be keeped on the side and if it has a line inbetween it and has numbers on each side the arrow pointing in the direction thats how many to keep! and when i say you should keep i mean the blocks click one to destroy it if you click the wrong one it will turn red! this is based off of picross 3d on ds! tri to find the hidden shape!