by Dave Carney
Norfolk Southern SD70ACe puzzle, based on an original photo by Dave Carney (photo copyright Dave Carney -- used with permission). Photographed at Phillipsburg, New Jersey, October 23, 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.