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.

SEPTA Silverliner IV puzzle, based on an original photo by Stephen Bradley (photo copyright Stephen Bradley -- used with permission). Photographed at Lansdowne, Pennsylvania, June 4, 2011. Click here for more information about this photograph