by Jacobo Ruiz
Metropolitano de Tenerife Citadis puzzle, based on an original photo by Jacobo Ruiz (photo copyright Jacobo Ruiz -- used with permission). Photographed at Santa Cruz de Tenerife, Spain, October 20, 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.