Austin & Texas Central Railroad GP40-3 puzzle, based on an original photo by Michael Sender (photo copyright Michael Sender -- used with permission). Photographed at Austin, Texas, October 28, 2017.
Click here for more information about this photograph
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.