The Knight's Tour problem is a famous mathematical chess puzzle. The first solution provided an Arab philosopher in the 9th century from present-day Iraq.
Arabic grammar was of special interest in Europe especially in the 19th and early 20th century. Here is a list of the TOP FIVE Arabic grammarians from the West
Episode #11 of my series "9273 roots": 20 questions for the Western diplomat and Canadian ambassador who enjoys giving interviews in Arabic: Ulric Shannon.
Episode #8 of my series "9273 roots": 20 questions for the man who coded the best desktop-app for Lane's Arabic-English Lexicon: Graeme Andrews.