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.

Vermont Rail System SD70M-2 puzzle, based on an original photo by Joshua A. Harkness (photo copyright Joshua A. Harkness -- used with permission). Photographed at East Clarendon, Vermont, July 26, 2017. Click here for more information about this photograph