Kulon started to play chess at the age of 7 in the Koszalin University of Technology chess club. From 2002 Kulon won several times the Polish Youth Championships in different age categories. She won the World Youth Chess Championships twice: in 2004, in the Girls U12 category, and 2006, in the Girls U14. In 2008, she was the runner up, behind Nazí Paikidze, at the European Youth Chess Championships in the Girls U16 section.
In 2007, Kulon competed in the Polish women's championship for the first time, held that year in Barlinek, and finished seventh.[1] She won the Polish women's blitz championship in 2006, 2017, 2018.
In January 2014 Kulon won the Polish students women's championship in Katowice.[2] In April she took the bronze medal in the Polish women's championship in Warsaw.[3] Later in the same month, she became the Polish women's rapid champion in Trzcianka.[4]
In August, Kulon won the women's section of the World University Chess Championship in Katowice with a score of 8½ points out of 9. Her result contributed to Poland's gold medal.[5][6][7] In December she won the 4th Memorial of Krystyna Hołuj-Radzikowska in Wrocław.[8] In 2015 Kulon won again the Polish students women's championship.[9] In March 2017 she took the silver medal in the Polish women's championship.[10][11]
Kulon played for Poland in the European Girls' U18 Team Chess Championship:[12]
- In 2008, won team gold and individual silver at first board in the 8th European Girls' U18 Team Chess Championship in Szeged (+6, =0, -1).
Klaudia Kulon played for Poland in European Team Chess Championship:[13]
- In 2013, at fourth board (Poland II) in the 10th European Team Chess Championship (women) in Warsaw (+4, =2, -2).
Klaudia Kulon played for Poland in Women's Chess Olympiads:[14]
Klaudia Kulon played for Poland in World Team Chess Championships:[15]
