The original 3D scanned relief is available here: https://www.myminifactory.com/object/3d-print-night-284589
Print instructions: open the 3MF file in PrusaSlicer. It should have the main model, and an SVG cutting volume (do not touch it, it should be centered). After slicing, you will see that individual jigsaw pieces are created by the negative volume.
Print with PLA at 0.15mm layer height, or use variable layer height to improve details on top.
If you want to create your own puzzle, you can follow my step-by-step guide on Printables!
The author remixed this model.
Used the original model as a base for a jigsaw puzzle.