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.

Chicago, Rock Island & Pacific (Rock Island) GP7 puzzle, based on an original photo by Dave Zeman (photo copyright Dave Zeman -- used with permission). Photographed at Union, Illinois, August 12, 2018. Click here for more information about this photograph