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 GP39-3 puzzle, based on an original photo by Matthew Griffin (photo copyright Matthew Griffin -- used with permission). Photographed at Barstow, California, November 19, 2017. Click here for more information about this photograph