Looking for free online chess engines that have (roughly) known

In short, I am looking for an online free chess engine that has either: a.) multiple engines with multiple ratings, some as low as 1500-1600, and some as high as 2200 or better, or b.) is a single

Millennium eONE Electronic Chess Board

Even engines can't solve this puzzle. White to play and win : r/chess

J. Imaging, Free Full-Text

Best Free Chess Engines Every Chess Player Should Download - HobbyLark

9 Toughest Chess Engines You Can Play Against - Geekflare

Chess Engine Top 10 Engines In The World

9 Toughest Chess Engines You Can Play Against - Geekflare

6 Best & Most Powerful Chess Engines [Ranked] - PPQTY

J. Imaging, Free Full-Text