PS+ Required? - Chess Ultra - PSNProfiles

Can anybody tell me if this game requires PlayStation Plus in order to unlock any of the online trophies (even the ones that can be boosted using multiple accounts) or can the platinum be achieved without it?

Other] Ps Plus Random Game to Platinum Wheel : r/Trophies

Chess Ultra Trophies •

Chess Ultra

PlayStation Plus Extra/Premium Games List - PlayStation Network - PSNProfiles

Chess Ultra Trophies ~ PSN 100%

Other] My ultra rare Platinums according to psnprofiles. What are some of yours? : r/Trophies

Chess Ultra Trophy Guide •

Chess Ultra Trophies •

Chess Ultra Trophy Guide •

hunteriscoolio's PSN Profile •