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.

Central Maine and Quebec Railway SD40-2F puzzle, based on an original photo by Frank Jolin (photo copyright Frank Jolin -- used with permission). Photographed at Foster, Canada, September 20, 2017. Click here for more information about this photograph