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?

rmhook's PSN Profile •

Tripple_Barnett's PSN Profile •

dgaustin's PSN Profile •

Chess Trophies •

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

gazdavis11's PSN Profile •

Pure Chess Trophies •

Discussion] 0.1% Ultra Rare Rarity Suggestions? : r/Trophies

jdh0921's PSN Profile •

Chess Ultra Trophy Guide •

unweyshido345678's PSN Profile •

Chess Ultra Trophies •

JeSuisVoldy's PSN Profile •

Chess Ultra Trophies •