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.

Iowa Interstate Railroad 2-10-2 puzzle, based on an original photo by Matt Coffin (photo copyright Matt Coffin -- used with permission). Photographed at Mitchellville, Iowa, August 18, 2018. Click here for more information about this photograph