1409: Last Rostislavich ruler of Kiev dies. 1413-22: Vladimir-Suzdal wants to solve the Russian schism by war, but Kiev and Chernigov ally with Novgorod and Smolensk against it, and manage to win. Vladimir-Suzdal has to acknowledge the patriarch of Kiev as leader of the Orthodox church again. The schism is thus ended. 1431: Since Hungary has trouble with the Bohemian theocracy, and the current king isn't that competent, Kiev manages to conquer back the areas Hungary took from Halich-Volhyn in 1375.