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?

Chess Ultra: Academy Game Pack

Chess Ultra Trophies •

Tripple_Barnett's PSN Profile •

Download and play Chess Ultra: Pantheon Game Pack at the Epic Games Store.

Chess Ultra: Pantheon Game Pack

Chess Ultra] Pushed my boosting skills to the limit I wish I didn't suck so much at chess : r/Trophies

Chess Ultra: Academy Game Pack

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

Tennis On-Court Trophy List out on PSN Profiles : r/PSVR

Chess Ultra Trophy Guide •