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.

Chesapeake & Ohio (C&O) SD50 puzzle, based on an original photo by Ted Grumbine (photo copyright Ted Grumbine -- used with permission). Photographed at Hagerstown, Maryland, September 18, 1989. Click here for more information about this photograph