What are the pluses and minuses AFTER the Stockfish analysis? - Chess Forums

I am wondering what the ++ and -- are after the Stockfish analysis. For example, Stockfish may evaluate a position as - (0.02 ++), as in the first screen shot, or + (0.02 --) as in the the second screen shot. I am very clear about what the first + or - means that is outside the parenthesis, but I have

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

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Stockfish will analyze a chess position through to (for example) depth 45 and announce a mate in 10. When it reaches depth 56 it finds an improvement, to mate in 9. Why does it need such deep analysis to find such short mates? - Quora

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