Berestechko 1651 is a game for two players simulating the third day of the battle of Berestechko, fought on 30th June 1651 between the Zaporozhian Cossacks, led by Hetman Bohdan Khmelnytsky and aided by their Crimean Tatar allies, and a Polish-Lituanian army under King John II Casimir, near the Styr river in Volhynia It was one of the largest land battles of 17th century Europe. In each turn players alternate performing “impulses”, in which they activate units and/or gather coordination and reorganization commands.