Osmak won the Ukrainian Girl's Chess Championships several times in different age categories: U10 (2006, 2008), U12 (2010), U16 (2013), U20 (2012, 2013). In 2010, she won the
World Youth Chess Championship in the U12 girl's age group. She won silver medals at the
European Youth Chess Championships twice: in the U10 girl's age category (2008) and in the U12 girl's age category (2010). At the
Ukrainian Women's Chess Championships, Osmak won gold (2017), silver (2019) and four bronze (2014, 2015, 2018, 2020) medals. In August 2021, Osmak won 2nd place in the
European Individual Women's Chess Championship. In November 2021, she ranked 21st overall in the
FIDE Women's Grand Swiss Tournament 2021. Osmak represented the Ukrainian team in major team chess tournaments: • Participated in the
Women's Chess Olympiad three times (
2018,
2022,
2024) and won gold in
2022 and silver in
2018; • Participated in
European Women's Team Chess Championship 3 times (2017, 2019, 2021), winning a bronze medal in the 2017 team competition; • Participated in the
World Women's Team Chess Championship twice (2017, and bronze medal 2021). Osmak was awarded the title of Woman Grandmaster (WGM) in 2016 by
FIDE, and in 2017 she achieved the title of International Master (IM). == Disqualification from the FIDE Universiade tournament ==