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.

Denver & Rio Grande Western Railroad 2-8-0 puzzle, based on an original photo by Andrew Button of Colorado of Railphotographers (photo copyright Andrew Button of Colorado of Railphotographers -- used with permission). Photographed at Golden, Colorado, September 17, 2017. Click here for more information about this photograph