by Joe Goodrich
CSX Transportation (CSXT) ES44AC puzzle, based on an original photo by Joe Goodrich (photo copyright Joe Goodrich -- used with permission). Photographed at Shenendoah Jct, West Virginia, September 23, 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.