text: Election and reign He arrived to the Jaghatu valley near Maragha to attend the qurultai for the election of new Il-Khan after Abaqa's death in April 1282. The main competition was between his nephew Arghun, his brother Möngke-Temür, and himself. He was supported by most of the nobles and emirs, including Jalairs such as Shiktur Noyan, Suqunjaq Noyan and the Khongirads. He was elected on 6 May 1282 and enthroned on 21 June 1282 at Aladagh (), east of lake Van. He adopted his Muslim name Ahmed as his regnal name.
  His first act was to clear Ata-Malik Juvayni of charges brought against him by Majd al-Mulk Yazdi, a vizier who accused him of embezzling state funds. Tekuder restored him to the government of Baghdad, while people lynched Majd al-Mulk for witchcraft. He also appointed his younger half-brother, Qonqurtai, as viceroy of Anatolia the following month. However Arghun believed that the Juvayni brothers were responsible for his father's death by poisoning. He came to Baghdad to spend the winter of 1282-1283 and restarted the investigation of the accusations of embezzlement which may have caused Ata Malik's stroke on 5 March 1283.
  Rivalry with Arghun
  As Arghun's dissatisfaction grew, he left for Khorasan in spring to gain the allegiance of minor nobles and amirs. Tekuder on the other hand began to be suspicious of his half-brother Qonqurtai and Arghun's potential alliance. Qonqurtai was accused of conspiracy and was arrested by Tekuder's son-in-law, Alinaq Noyan - the viceroy of Georgia - on 17 January 1284, and was executed the next day. An army contingent was sent to Jazira, from where Gaykhatu and Baydu fled to Khorasan, to Arghun's encampment while several emirs such as Taghachar and Doladai were arrested.