FM (2008); IM (2012). He won his GM title in 2013 at the age of 15 years and 21 days, becoming the second youngest GM in the world after Wei Yi.
Jan-Krzysztof Duda was born in Krakow, Poland, learnt to play chess at the age of five and gained his FM title by winning the 2008 World U10 Championship that was held in Vung Tau, Vietnam. He competed, aged 12, in the World Junior Championship (2010) scoring 6.5/13, and in the World Youth Chess Championships 2010 (U12), placing 3rd with 8.5/11. He scored 4/7 in the 2010 European Rapid Championship and finished the year with 6.5/9 in the XXI International Chess Festival Cracovia 2010, Open A defeating both grandmasters he encountered, namely Ilmars Starostits and Vadim Shishkin. 2011 started quietly but in the middle of the year, he hit a purple patch,scoring 8/9 in the Polish Junior League, 5.5/9 in the Miguel Najdorf International Chess Festival and especially in the 8th International Festival of Chess GM Tournament in Ostroda in August 2011, where he scored 5.5/9 coming =2nd behind the winner, Lithuanian GM Vidmantas Malisauskas, the only player to whom he dropped a game; he also picked up nearly 50 ELO for this result alone, and nearly 100 ELO for the September rating period, extending his rating lead by over 250 points ahead of the only other Polish U14 rated over 2000, Radoslaw Gajek. In the 2011 European U14 Championship, he placed =2nd with 7/9 and in November 2011 he placed =4th (6th on tiebreak) in the U14 World Championship, losing the battle for first place in the last round by losing to the winner FM Kirill Alekseenko.
2012 was auspicious for Duda, as he scored a solid 4/9 at the Polish Championship and shortly afterwards, won the Polish U18 Championship, a point clear of the field with 7.5/9, thereby adding 40 Elo points to his rating. In July he scored 9/9 in the Polish Junior League and in August, he won the Olomouc Chess Summer 2012 - A1 in the Czech Republic (and a GM norm) before going on to win the U14 European Championship. In November 2012, he placed =3rd at the World U18 Championship held in Maribor in Slovenia, and in December 2012-January 2013 he scored 6/9 at the 23rd International Chess Festival held in Cracow, Poland, maintaining rating parity. In March 2013, he scored 8/9 at the 1st Saturday GM tournament, thereby picking up his 2nd GM norm. In April 2013, he scored 5/9 in the Polish Championship, narrowly missing his 3rd GM norm. In May 2013, he earned his 3rd GM norm at the European Individual Championships (2013), earning his GM title in the process. Strong results in the Czech and Polish Leagues temporarily pushed him to top ranking of his age group in the world although a subsequent stellar performance by Artemiev eclipsed him for the top ranking for July 2013. Duda however received a seriously heavy weight consolation prize that month when he discovered he was one of the President's nominees to the World Cup (2013). There he played Vassily Ivanchuk in the first round, losing by 0.5-1.5 and exiting the tournament. Soon after, he scored a solid 8.5/13 to place =8th in the World Junior Championship (2013) and 8/11 in the World U18 Championship 2013 to place =3rd (8th on tiebreak).
2014 started with Duda's inaugural participation in Tata. At the Tata Steel (Group B) (2014), he placed =6th with 7/13 (+5 -4 =4) picking up a handful of rating points. He competed in the European Individual Championships (2014) and scored 7/11 picking up another handful of points and also placed 3rd in the 2014 Polish Championship. In May, he played for Poland in the Mitropa Cup, and in the following month he and his team played an Olympic training match with Hungary. In July he participated in the Miguel Najdorf International Festival Group A, scoring 6/9, half a point from the lead. He played board 3 for Poland in the Chess Olympiad (2014), scoring an excellent 8.5/11, narrowly missing an individual medal. In October, he was =3rd at the World Junior Championship (2014) behind the winner Lu Shanglei and runner-up Wei Yi, and alongside Vladimir Fedoseev, ultimately placing 4th on tiebreak.
As of 1 October 2014, Duda's rating was 2599, making him the #3 U16 in the world. His rapid and blitz ratings are 2467 and 2525 respectively.
Photo of Duda is at: http://www.google.com.au/imgres?q=J...; Article by chessbase about Duda's acquisition of the GM title: http://chessbase.com/Home/TabId/211...