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Flawed Tactics Puzzles

I have gotten a few puzzles that were flatout wrong. I notice that the score on these puzzles is zero...why have they not been removed?
This puzzle:
lichess.org/training/52426
The correct move sequence is 1...Qe1+ 2.Kh2 Bg1+ 3.Kh1 Bf2+ 4.Kh2 Qg1#, but if, on the last move, you play 4...Qh1+?? instead, it says "Victory!" anyway, even though that is a losing move.
I have posted this before, but apparently nobody noticed that thread.
#3 Duplicated in latest Chrome. Note that other 4th move blunders do not work, only 4...Qh1??

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