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 Railroad GP40M-2 puzzle, based on an original photo by Shawn Christie (photo copyright Shawn Christie -- used with permission). Photographed at Moab, Utah, September 25, 2016. Click here for more information about this photograph