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.

Terminal Railroad Association of St. Louis GP38-3 puzzle, based on an original photo by Matthew Chapman (photo copyright Matthew Chapman -- used with permission). Photographed at Saint Louis, Missouri, July 21, 2016. Click here for more information about this photograph