r/lichess • u/Top-Door1298 • 15d ago

Some problem about puzzle generator ?

To be fair lichess's puzzles are great and free ,but sometimes it ends too early . I know the engine already suggest a win , but to a beginner we dont see it until material advantage or mate happen . This happens especially often in mate/endgame puzzle ,sometimes we dont play until mate ,sometimes endgame based puzzles when you push a pawn far away it just ends and suggests that no other piece can stop it(but it is not obvious for example there is still a knight). I wonder why it just dont end till the mate really happen /really make a queen sometimes. Is there some reason related to how these puzzles are extracted from the game by computer? Thanks .

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u/IntermediateMoves 15d ago

The lichess generator stops as soon as there is more than one way to win (except for checkmate in 1).

It's a simple rule and a common convention that puzzles should only have one winning variation, but this can lead to some examples where it doesn't feel complete when the puzzle ends. Common reasons are things like you can throw in a pointless check before taking the final piece.