According to Gregoras, Laskaris intended to catch the Turks off guard by his rapid approach, but Akropolites relates that the Nicaean ruler sent Kaykhusraw's ambassador, whom he had taken along, to inform his master of his arrival. The sultan at first appeared incredulous, but eventually abandoned the siege and drew up his forces for battle.[1][17] The Turks were constrained by the narrowness of the valley and could not deploy their full force, especially their cavalry. Hence, the sultan decided to await the Nicaean attack instead.