engines - Is Houdini 6 a Stockfish clone? - Chess Stack Exchange

I've been hearing this claim being bandied about quite a lot and I'm wondering if there's any substance to it. Apparently the details are in a certain thread on Talkchess, but it's not viewable to

First catch your rabbit!

Stockfish - Wikidata

Stockfish - Chess Engines

Chessbase 13 for automatic game analysis - Chess Stack Exchange

Convetka

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OC] Top Chess Engines (1990 - 2021) : r/dataisbeautiful

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