What is the toughest bot ever? (excluding stockfish and the others?)

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PranithPrashanthChessstar

For me, it is either mittens or martin's wife. What about you guys?

oscarcui

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Fr3nchToastCrunch
oscarcui wrote:

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Fr3nchToastCrunch

I'd say Mittens takes it. Mittens' Elo is estimated to be 3600 — nearly equivalent to Stockfish. Furthermore, GothamChess once simulated a game between them that was actually pretty close until the end (Stockfish got the dub).

There have also been simulations of a game between Stockfish and Martina, none of which were even close (again, Stockfish won them all), so that leaves Mittens as the champ, probably.