Our library has a collection of donated jigsaw puzzles, which you can take home to work on. Last year, we spent an evening at the library working on a difficult puzzle (the pieces were double-sided and the same puzzle image was printed on both sides, with one side rotated 90°). We haven’t seen that puzzle since, but I found this even–more–difficult puzzle on Thursday. It’s called “The Puzzler: The World’s First Circular Jigsaw Puzzle of a Jigsaw Puzzle” by Springbok.
We started Thursday evening, spending four hours to get the border completed. Friday afternoon, we decided to continue, but thought it would be fun to take a time-lapse video (with iStopMotion, which we got in this year's Macheist bundle). So we did. One frame every six seconds, played at 10 frames per second, means that a minute in the video represents an hour in real life. It took almost ten hours to finish the puzzle on Satuday, so the video is pretty long – almost ten minutes. Background music is “Black” by Ambient Teknology.