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 ES44AC puzzle, based on an original photo by Erik Rasmussen (photo copyright Erik Rasmussen -- used with permission). Photographed at Davenport, Iowa, January 28, 2021. Click here for more information about this photograph