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 AC4400CW-CTE puzzle, based on an original photo by Greg Primrose (photo copyright Greg Primrose -- used with permission). Photographed at Victorville, California, June 3, 2014. Click here for more information about this photograph