Dear All, I am struggling with a 3D Strip Packing problem. Briefly: you have a set of boxes (cuboids of variable sizes) that you want to put inside a (large) container of finite width and length (which are larger than those of any of the boxes) and infinite depth. The goal is to minimize the final depth of my pile of boxes inside the container. The boxes are allowed to float in mid air, but they cannot overlap and, although they can be rotated, their faces need always to be parallel or orthogonal to the container's walls. The boxes cannot overlap. It is a hard optimization problem and I found a lot of literature about it, but I wonder if there is anything already implemented (or easily implementable) in R to tackle this kind of problems. Any suggestion is welcome. Cheers Lorenzo