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Can these puzzles be removed from lichess please?

#2 thanks for formating the puzzles into hyperlinks for me.

@InkyDarkBird the engine evaluates 3 move repitition as 0.00 so it's easy to verify that it exists without checking where the repetition is.

#9 the puzzle you provided is a clear win for white since black has no adequate resource to defend against the queen and bishop. It's difficult for the puzzle to check that the solver has that knowledge due to multiple winning moves after kxb7.

Here is another bad puzzle

lichess.org/training/rjS4h

After bxc5 bxc5 Ka6! Kc8 it's clear that both b6 and b5 are both completely winning. b6 is obviously the better practical choice on account of b5 Kc7 when white will win the c-pawn and try to draw (however he is not fast enough). Also my engine has weighed in that b6 wins 3 moves faster than b5 :)
However b5 is the "correct" move...
#12 It's a winning position at the end... It's not actually a terrible puzzle but it does expect a base level understanding of pawn endgames. The point is that there is no other way to win.

lichess.org/training/dAXM1

Another 3 move repetition based puzzle... I thought lichess used human input to make their puzzles...
That would be some crazy amount of human input for the millions of puzzles.

They are generated by Stockfish by looking through games played on Lichess. That's also why they are generally guaranteed to be correct while still having natural positions.

But there has been some discussion on automatically excluding puzzles if there have been recent repetitions to avoid this problem.

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