This Heye from the late 90s is proving a lot more challenging than I expected. It’s part of a series called Cosmo, all with space images and 2000 pieces (for the year 2000, I presume). The reason it’s difficult is that everyting except the black background has a metallic effect, making the pieces reflect light so that’s it’s almost impossible to make out the different colours unless there’s daylight. The poster is just a regular poster, without metallic effects. Since I do most of my puzzling late at night, this is going to be very slow, in fact I’m not sure I’ll be able to finish the puzzle before I leave Dortmund.