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.

Cincinnati Street Car System Streetcar puzzle, based on an original photo by OBrian Harmon (photo copyright OBrian Harmon -- used with permission). Photographed at Cincinnati, Ohio, June 24, 2017. Click here for more information about this photograph