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.

Ferrocarril General Roca U18C puzzle, based on an original photo by Julio Pastine (photo copyright Julio Pastine -- used with permission). Photographed at Ciudad de Buenos Aires, Argentina, January 27, 1989. Click here for more information about this photograph