To maximize your puzzling space, click on the Maximize button in the lower right corner of the puzzle screen for fullscreen mode. Click on it again to return to normal mode.

For more tips, see the Online Puzzle Tips page.

FS Italian State Railways ETR 500 puzzle, based on an original photo by Paul F. De Luca (photo copyright Paul F. De Luca -- used with permission). Photographed at Milan, Italy, June 29, 2018. Click here for more information about this photograph