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 GP38-2 puzzle, based on an original photo by Anthony Paci (photo copyright Anthony Paci -- used with permission). Photographed at Wilmington, Delaware, September 22, 2015. Click here for more information about this photograph