FM (2007); GM (2015); World U14 Champion (2011); European U16 Champion (2013).
<Youth> Alekseenko became a FIDE master in 2007 for winning the 2007 European U10 championship. In November 2011, he won the World U14 championship outright, scoring 8/9. Outright winner of the European U16 Championship 2013. (1) He won silver with 8.5/11 behind Masoud Mosadeghpour at the World U18 Championship staged in Halkidiki, Greece. (2)
<City> =1st with 7.5/9 at the 88th St Petersburg Championship held in March 2015, placing 2nd on tiebreak to Alexey Zenzera.
<Continental> He scored 7/11 at the 13th European Individual Championship (2012), earning a 20 game-GM norm for his result.
In October 2011, he scored 6/9, winning his first GM norm at the Chigorin Memorial Open. He was formally awarded his GM title in February 2015 when his rating finally reached 2500 after he won the category 8 Margaryan Memorial, held in Yerevan from 1st to 16th of January 2015. Outright winner of the Polugaevsky Memorial held in July 2015, scoring 8/11, (3) and winner of the Chigorin Memorial in October 2015.
(1) http://chess-results.com/tnr106044....; (2) http://chess-results.com/tnr187414....; (3) http://www.theweekinchess.com/html/...