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 Trophies •

The Academy Game Pack is a tribute to the long and noble chess playing tradition in Russia that has produced some of the greatest players of all time,

Chess Ultra: Academy Game Pack

CaptainSellers' PSN Profile •

Chess Ultra Trophy Guide and Roadmap - Chess Ultra

Review: Chess Ultra (Sony PlayStation 4) – Digitally Downloaded

Chess Ultra PS VR PS4 - Download

Bumpers Checklist - Trophy Checklists - PSNProfiles

JeSuisVoldy's PSN Profile •

Gattusso02's PSN Profile •

Chess Ultra Trophy Guide - Comments •

PlayStation+ List by Completion Time – NODE Gamers