ابن خلكان
His biographer Ibn Khallikan, (d. 1282), relates that even in his lifetime the phrase "to play like al-Ṣūlī" was to show great skill at shaṭranj. His endgame strategies are still studied. Contemporary biographer mention his skill in blindfold chess. Al-Ṣūlī also taught shaṭranj. Many later European writers based their work on modern chess on al-Suli's work.