by David Hutt
Canadian National Railway RDC1 puzzle, based on an original photo by David Hutt (photo copyright David Hutt -- used with permission). Photographed at Truro, Nova Scotia, April 23, 2018.
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.