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.

Rock Island Railroad GP7 puzzle, based on an original photo by Joe Blackwell (photo copyright Joe Blackwell -- used with permission). Photographed at South Chicago, Illinois, August, 1972. Click here for more information about this photograph