Why does it take stockfish depth 35 to find mate in 7? - Chess Stack Exchange

My underlying question here is: What is depth? I know depth is supposedly the number of half-moves or plies from the starting position that it has calculated, in at least one line. But I feel this

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2011 - Chess Skills

Stockfish 10 cant find mate in 2? : r/chess

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Why can Stockfish give different evaluations at the same depth? - Quora

Fischer Random - All 960 starting positions evaluated with Stockfish : r/ chess

Fischer random chess - Wikipedia

I though this move was genius, stockfish not impressed : r/chessbeginners

I composed a puzzle stockfish can't solve. (Black to play, mate in 11) : r/ chess

engines - Is there a way to use Stockfish to see tactics that aren't necessarily great? - Chess Stack Exchange

Chess Skills: 2017

Wrong evaluation for triple repetition? · Issue #3542 · official-stockfish/ Stockfish · GitHub

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What does depth mean in computer chess analysis? - Quora

Karsten Müller analyzes endgame highlights from the Chessable Masters tournament