I'd like also to play online against top original engines like Koivisto, Berserk and Ethereal
PLAYCHESS.COM TOP RANKING
LICHESS.ORG TOP RANKING
On Lichess.org there are already very good engines like ArasanX and Marvin, reach us!
ALL BOTS
ProteusSF-lite
ProteusSF
ProteusSF-Turbo
It's FREE and full of interesting statistics and average ELO of bots is 2900.
macOS Sequoia 16GB-512GB, Windows 11 & Ubuntu ARM64.