As mentioned yesterday, Abba and Josh came for a short visit. Josh, in particular, enjoyed my various three-dimensional puzzles. We have two copies of this one, with six identical pieces each and the two of them worked on it for a while. This was not the one that gave him the most frustration but as with anything of this sort, finally figuring it out can be very satisfying. The one that really occupied him was two crossed pieces and a square piece held in the intersection of the two (a bit hard to describe, actually). But he finally got that one taken apart, as well.