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.

Union Pacific SD70ACe puzzle, based on an original photo by Sid Vaught (photo copyright Sid Vaught -- used with permission). Photographed at Saint Louis, Missouri, October 4, 2014. Click here for more information about this photograph