 Early on the morning of 27 June 1659, Vyhovsky's detachment attacked Trubetskoy's army near Konotop, and using this sudden and unexpected attack managed to capture a sizable number of the enemy's horses and drive them away and further into the steppe.The enemy counterattacked, and Vyhovsky retreated across the bridge to the other bank of the Sosnivka river in the direction of his camp.Having learned of the assault, Prince Trubetskoy dispatched a detachment of 4,000 men noble cavalry and 2,000 Bezpalyi Cossacks led by Prince Semen Pozharsky across the river to pursue Ivan Vyhovsky.