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 Robert Palmer (photo copyright Robert Palmer -- used with permission). Photographed at Echo Creek Canyon, Utah, October 9, 2009. Click here for more information about this photograph