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.

Southern Pacific Railroad ML 4000 puzzle, based on an original photo by Shelley Hunter (photo copyright Shelley Hunter -- used with permission). Photographed at Sunol, California, July 20, 2019. Click here for more information about this photograph