by Georg Trüb
RhB - Rhätische Bahn Gmf 234 puzzle, based on an original photo by Georg Trüb (photo copyright Georg Trüb -- used with permission). Photographed at Landquart, Switzerland, December 5, 2019.
The "Easy" version of the puzzle has about 100 pieces, "Medium" has about 200 pieces, "Hard" is about 300 pieces. For the Online puzzles, see the Online Puzzle Tips.