Unable to deliver a decisive blow to Władysław I Łokietek, the Knights decided on finally mastering Kuyavia. The night of 23–24 September saw the first major unresolved clash near Konin. Three days later, in the morning, Polish troops numbering about 5,000 and led personally by King Władysław and his son Prince Casimir encountered the rear guard of the Teutonic Knights near Radziejów. Taking advantage of the surprise, the Poles defeated the enemy unit and took Dietrich von Altenburg, the commander of the expedition, as prisoner. In the afternoon, however, there was another clash near the village of Płowce. The battle was not settled because of the withdrawal of some Polish troops with Prince Casimir, and in the confusion the Teutonic commander escaped from captivity. Though inconclusive, the Battle of Płowce was important psychologically for the Poles as it convinced them that the Knights were not insurmountable.