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 ET44C4 puzzle, based on an original photo by Mark MacDougall (photo copyright Mark MacDougall -- used with permission). Photographed at San Clemente, California, July 22, 2017. Click here for more information about this photograph