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 F9(A) puzzle, based on an original photo by Kerry Douglas (photo copyright Kerry Douglas -- used with permission). Photographed at Chattanooga, Tennessee, April 24, 2018. Click here for more information about this photograph