In August 2012, Andreikin won the 65th Russian Chess Championship in Moscow after winning a rapid playoff against five other players.[11] In the Tal Memorial played in June 2013, Andreikin was the lowest rated player, but he went through the tournament undefeated with eight draws and a win against Vladimir Kramnik, which gave him a shared third to fifth place.[12]
In the Chess World Cup 2013, held in Norway from 11 August to 2 September, Andreikin finished in second place, losing to Kramnik in the four-game final match 1½–2½.[13] This result qualified him for the Candidates Tournament 2014,[14] where he finished equal 3rd-5th out of 8 players, with a score of 7/14. As of 2023,[update] this is the only time he has qualified for the Candidates.
In October–November 2014 he scored a major success in the second leg of the FIDE Grand Prix in Tashkent, winning the tournament ahead of Hikaru Nakamura, Shakhriyar Mamedyarov, Fabiano Caruana and eight other elite grandmasters. His score of 7/11 gave him a performance rating of 2852.[15] However his other Grand Prix results were not as good, and he was knocked out of the Chess World Cup 2015 in round of 16 by eventual winner Sergey Karjakin, so he missed qualification for the 2016 Candidates Tournament.
In 2018, Andreikin won the 71st Russian Chess Championship for the second time in his career after beating Dmitry Jakovenko in a rapid playoff.[21]
In 2019, Andreikin won a match against Ding Liren with a (+1-0=3) score.[22]
2020s
Through February and March 2022, Andreikin played in the FIDE Grand Prix 2022. In the second leg, he won his group with a 4/6 result and defeated Anish Giri in the semifinals with a 2.5/4 result in classical and rapid time formats. He was defeated by Richard Rápport in the finals with a 0.5/2 result. He withdrew from the remainder of the Grand Prix for personal reasons. He finished the tournament fifth in the standings with ten points.
In 2022, Andreikin won 10 Titled Tuesday events held on Chess.com and reached the finals of Chess.com Rapid Chess Championship losing to Ian Nepomniachtchi in the finals after defeating Hikaru Nakamura, Wesley So and Fabiano Caruana.[23][24] He occasionally streams Titled Arenas and Team Battles held on Lichess on his YouTube Channel with the username "FairChess" to his 13 thousand subscribers.[25]