by Daniel Simon
DONJ 0-6-6-0 puzzle, based on an original photo by Daniel Simon (photo copyright Daniel Simon -- used with permission). Photographed at Tallas station, Sweden, July 5, 2019.
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.