by Drew Mitchem
Norfolk Southern ES44AC puzzle, based on an original photo by Drew Mitchem (photo copyright Drew Mitchem -- used with permission). Photographed at Pasco, Washington, November 15, 2014.
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.