 Nyora kupfuurira kweiyi ndima - Chigaev akaberekerwa muKemerovo. Akatamba muchikwata cheRussia chakakunda World Youth Under 16 Chess Olympiad muna 2012. Chigaev akahwinawo menduru yegoridhe somutambi akanakisisa pabhodhi rechipiri. Muna 2015 akakunda Vanya Somov Memorial - Worlds Youth Stars mutambo muKirishi. Muna 2018, akatamba muchikwata cheMolodezhka cheTyumen icho chakatora menduru yebronze muRussian Team Championships Premier League neEuropean Club Cup. Muna Ndira 2019 Chigaev akagovana nzvimbo yechipiri naAndrey Esipenko naBenjamin Gledura mumutambo weTata Steel Challengers muWijk aan Zee, Netherlands yakawana mapoinzi 812 kubva mumitambo gumi nematatu. Akakwikwidza muFIDE World Cup 2019somumwe wevakasarudzwa nomutungamiri weFIDE. Chigaev akabatanidzwa naParham Maghsoodloo uye akarasikirwa naye ne20 uye nokudaro akabviswa mumutambo mumutambo wokutanga. 