Dark Knight is an open-source Android chess application specifically designed for Honeycomb tablets and Ice Cream Sandwich (ICS) devices. It is based on DroidFish and the Stockfish engine, and includes several additions such as Bluetooth play and difficulty selection.Dark Knight is licensed under the GPLv3 and collaboration is encouraged at its SourceForge project page. It is provided without warranty, express or implied. Full text of the GPLv3 available at http://www.gnu.org/licenses/gpl.html.Feature image background for Dark Knight Market page credit to zyllan at Flickr, image page http://www.flickr.com/photos/zyllan/3647600981/. Image is licensed under Creative Commons license.