Born in 1998, Donchenko earned his
international master title in 2012 and his
grandmaster title in 2015. In March 2018, he competed in the
European Individual Chess Championship. He placed 114th, scoring 6/11 (+4–3=4). He participated in the European Championship again in 2019, placing 103rd with 6½/11 (+5–3=3). Donchenko shared second with
Gata Kamsky at the
Biel Masters in July 2019 with 6½/9 (+5–1=3), half a point behind winner
Amin Tabatabaei. Donchenko competed in the Barcelona Open 2019, held from 27 September to 5 October. He scored 7½/9 (+6–0=3) to take clear-first place. Donchenko was a late replacement for
Daniil Dubov in the
2021 Tata Steel Masters, as the latter withdrew due to a close associate testing positive for COVID-19. Donchenko placed last in the tournament, with a score of 3½/13 (+0–6=7). In August 2021, he won the
Riga Technical University Open "A" tournament. In January 2023, Donchenko won
Tata Steel Challengers 2023 with one round to spare, securing him a place in
Tata Steel Masters in 2024. ==Personal life==