The town of Chyhyryn (Ott.T.: Çehrin; Pol.: Czehrin; Russ.: Čigirin) was of military and political significance in the later eleventh/seventeenth century as the stronghold and administrative centre of the Ukrainian Right-Bank Cossack state. It is situated approximately 250 km south-east of Kyiv in the present day Ukrainian oblastʾ of Čerkasy and lies on the Tyasmin river, a small west-bank tributary of the Dnepro, opposite a point approximately 500 km from the latter's mouth. The Ottoman campaign undertaken by the grand vizier Kara Mustafa (Qara