Positions in which engines can't find best moves?

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Avatar of JayeshSinhaChess

I was watching Agadmator's videos and he did one on Leko vs Kramnik where in this position

 
Most engines failed to spot the best move which is completely winning for black. The chess.com engine however did find the move Qd3 instantly. When I tried it elsewhere, it failed to spot the move and suggested Bxa6, which is strange as it's a strong engine. Qd3 is a difficult move to spot, but surely engines should.
Are there other positions from actual games where engines failed to spot the best move?
Avatar of llama

My stockfish takes a little less than 2 seconds to find it.

If the engine runs server side, then with tens of thousands of users of course they're not going to give much computing power to you. They may have a strong engine, but if it only thinks for 0.5 seconds it's not going to find the best move.

Anyway, since these engines are free, and the interfaces that allow you to use them are free, I don't know why people don't just download this stuff. Using analysis on a website is going to give you very sub-par results.