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 4-8-4 puzzle, based on an original photo by Bob Krone (photo copyright Bob Krone -- used with permission). Photographed at Denver, Colorado, February 15, 1975. Click here for more information about this photograph