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.

Tennessee Valley Railroad Museum GP7 puzzle, based on an original photo by Joel Hinkhouse (photo copyright Joel Hinkhouse -- used with permission). Photographed at Chattanooga, Tennessee, March 18, 2019. Click here for more information about this photograph