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.

Kansas City Southern Railway SD70ACe puzzle, based on an original photo by Erik Rasmussen (photo copyright Erik Rasmussen -- used with permission). Photographed at Davenport, Iowa, January 10, 2019. Click here for more information about this photograph