by Steve Hardin
CSX Transportation (CSXT) AC4400CW puzzle, based on an original photo by Steve Hardin (photo copyright Steve Hardin -- used with permission). Photographed at Cartersville, Georgia, May 30, 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.