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.

Indiana & Ohio Railway GP40 puzzle, based on an original photo by Michael Harding (photo copyright Michael Harding -- used with permission). Photographed at Warsaw, Indiana, May 18, 2014. Click here for more information about this photograph