by Chase Gunnoe
Canadian National Railway ES44AC puzzle, based on an original photo by Chase Gunnoe (photo copyright Chase Gunnoe -- used with permission). Photographed at Byron, Wisconsin, April 29, 2016.
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.