by John Russell
Diesel Traction Group DG puzzle, based on an original photo by John Russell (photo copyright John Russell -- used with permission). Photographed at Temuka, New Zealand, October 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.