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.

Pan Am Railways FP9 puzzle, based on an original photo by Kevin Burkholder (photo copyright Kevin Burkholder -- used with permission). Photographed at Greenfield, Massachusetts, October 17, 2019. Click here for more information about this photograph