by Steve Hardin
Norfolk Southern ES44AC puzzle, based on an original photo by Steve Hardin (photo copyright Steve Hardin -- used with permission). Photographed at Rockmart, Georgia, July 16, 2021.
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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.