by Joe Vittitoe
CSX Transportation (CSXT) GP40-2 puzzle, based on an original photo by Joe Vittitoe (photo copyright Joe Vittitoe -- used with permission). Photographed at Louisville, Kentucky, August 18, 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.