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 SD40-2 puzzle, based on an original photo by David Rohdenburg (photo copyright David Rohdenburg -- used with permission). Photographed at Crescent Springs, Kentucky, June 28, 2019. Click here for more information about this photograph