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.

BNSF Railway SD70MAC puzzle, based on an original photo by Drew Mitchem (photo copyright Drew Mitchem -- used with permission). Photographed at St. Francis, Texas, April 19, 2013. Click here for more information about this photograph