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lichess.org/training/7587 there is line 1. Qf2+ Kh1 2. Kd4 h2 3. Qf1X but system consider it's wrong and expects instead mate in 4, starting from 1. Ke4 ...

lichess.org/training/57089 solution is obvious: 1.Qg6+ Ke7 2. Qe6+ Kd8 3. Qd7X but it is considered wrong, system expects 1.Qe6+ ... and so on, mate in 5

lichess.org/training/50042 direct line 1. ... Qb1+ 2. Kg2 Qf1X considered wrong, instead system expects one to promote pawn first: 1. ... a1Q 2. Qa1 Rb1+ 3. Qb1 Qb1+ 4. Kg2 Qf1X

it's not a mate: 1.Qe6+ Kg7 2.Be5+ Kf8

lichess.org/training/31299 first move Kf5 or Kg5 with mate in 3 considered correct, but first move Kg6 or Rf8+, which also leads to mate in 3 - considered wrong

> rise_UIED System does penalize for any other move, except 2. ... Qg3?. You will lost puzzle, if try different move. > prismschism I don't have answers on your questions ... Clearly, it's impossible …

lichess.org/training/40361 first movies is natural: 1. ... Qg5 2. Kh8 but then, system requires very strange 2. ... Qg3? to pass the puzzle!

lichess.org/training/35254 line 1. ... Nd1+ and mate in 3, considered correct, but line 1. ... Nh3+ and also mate in 3, considered wrong

lichess.org/training/26422 best line is 1.Qb3+ Kd4 2. Qd3X but system expects 1.a6 .. with mate in 3 movies.

yes, it's my mistake