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.

Grand Canyon Railway FPA-4 puzzle, based on an original photo by Richard Collins Jameson (photo copyright Richard Collins Jameson -- used with permission). Photographed at South Rim, Arizona, April 15, 2018.