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Why do some puzzles end prematurely?

#1

Obviously a puzzle will end as soon as Stockfish has to play a move that will result in multiple winning continuations (checkmate notwithstanding). But I still run into some puzzles that end inexplicably early. Here's an example: https://lichess.org/training/45yxM. The puzzle ends after Qf4+. But if white responds with Qg3, then black has to be precise and throw in a check before capturing the undefended rook. So I'm curious why the puzzle ends when it does.

Obviously a puzzle will end as soon as Stockfish has to play a move that will result in multiple winning continuations (checkmate notwithstanding). But I still run into some puzzles that end inexplicably early. Here's an example: https://lichess.org/training/45yxM. The puzzle ends after Qf4+. But if white responds with Qg3, then black has to be precise and throw in a check before capturing the undefended rook. So I'm curious why the puzzle ends when it does.
#2

Puzzles only take top stockfish moves, qg3 is the second best

Puzzles only take top stockfish moves, qg3 is the second best
#3

The scary part is...to the machine, it isn't ending prematurely. ;)

The scary part is...to the machine, it isn't ending prematurely. ;)
#5

I agree, 28. Qg3 Qh6! could and should have been part of the puzzle.

I agree, 28. Qg3 Qh6! could and should have been part of the puzzle.
#6

Because they are all computer generated. I recommend to buy a book for puzzles.

Because they are all computer generated. I recommend to buy a book for puzzles.

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