Students at Berlin University Build Chess Game on Ethereum 10 years ago
chess. but with blockchain!
http://benn.org
[ my public key: https://keybase.io/meinhard; my proof: https://keybase.io/meinhard/sigs/IGpH37ViFFLDyilo4M0AbV9zLyye2nUBgGw0KULCfL8 ]