 Soon, Vsevolod and Izyaslav were able to muster a new army with the help of their sons and headed for Chernigov.Boris and Oleg had already left the city by the time Vsevolod and Izyaslav approached it, but the citizens of Chernigov closed the gates and prepared for the siege.The attackers burned the outer parts of the city and wanted to proceed further, but received the news on Oleg and Boris coming to Chernigov's rescue.