English a b c d e f g h 88 77 66 55 44 33 22 11 a b c d e f g h The Stonewall set-up Noun Stonewall Atack (uncountable) A Closed Game system in chess, characterized by white developing pawns to d4 and e3, bishop to d3, knight to d2, and then completing the Stonewall structure by playing pawns to c3 and f4. Further reading Stonewall Attack on Wikipedia.Wikipedia Wikiwand - on Seamless Wikipedia browsing. On steroids.