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 GP38-2 puzzle, based on an original photo by Tom Farence (photo copyright Tom Farence -- used with permission). Photographed at Colona, Illinois, October 16, 2019. Click here for more information about this photograph