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.

Canadian National Railway ES44AC puzzle, based on an original photo by Daniel Tatjenhorst (photo copyright Daniel Tatjenhorst -- used with permission). Photographed at Thomasboro, Illinois, June 12, 2020. Click here for more information about this photograph