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.

Norfolk Southern SD70M-2 puzzle, based on an original photo by Rich Kaminsky (photo copyright Rich Kaminsky -- used with permission). Photographed at North Ridgeville, Ohio, September 4, 2014. Click here for more information about this photograph