[2] He came second in the Zone 3.4 Zonal Open Championship in 2021, qualifying for the Chess World Cup 2021.

[5] In 2023 he won the Qatar Masters tournament in a tie-break playoff against fellow Uzbek Nodirbek Abdusattorov.

[6] In June 2024, Yakubboev participated in the UzChess Cup Masters, finishing first ahead of Nodirbek Abdusattorov on tiebreaks.

[7] During the Tata Steel Chess Tournament 2025 Yakubboev refused to shake hands with four female opponents "for religious reasons" [8] Nine days after his refusal to shake hands with Vaishali Rameshbabu he offered her flowers, chocolate and personal apologies, but stuck to his original views.

He has an older sister, Nilufar Yakubbaeva, who has won the Women's section of the Uzbekistani Chess Championship multiple times.