Jan-Krzysztof Duda

Jan-Krzysztof Duda is a Polish chess grandmaster. A prodigy, he achieved the grandmaster title in 2013 at the age of 15 years and 21 days. As of December 2025, he is ranked No. 1 in Poland and No. 21 in the world. His personal best rating of 2760 makes him the highest ranked Polish player of all time.