Checkmate black No hint (2)


But for me, the right answer is Nd5+ Kf8 then Ng6+ Kg8 is forced then Rxe8+ Kh7 is forced and then Rxh8# The main plan was to capture the Queen and then checkmate, we have lots of points extra and I should also tell you that if we do a checkmate but he (opponent) has points then our rating change is only +1 or +2 that's all but on the other hand if we have more points for e.g- +5 or +9, then our rating will be +5 or +9. Is that clear ?

But for me, the right answer is Nd5+ Kf8 then Ng6+ Kg8 is forced then Rxe8+ Kh7 is forced and then Rxh8# The main plan was to capture the Queen and then checkmate, we have lots of points extra and I should also tell you that if we do a checkmate but he (opponent) has points then our rating change is only +1 or +2 that's all but on the other hand if we have more points for e.g- +5 or +9, then our rating will be +5 or +9. Is that clear ?
that's not true, if you win, you win, it doesn't matter how you win, or how much material you are left with when you win. A win is a win, and although @Lagomorph's answer was faster, it doesn't mean you are wrong either, since your solution also leads to checkmate.
aMazeMove is right of course and the assignment should have been "fastest checkmate" or "checkmate in 2 moves". Unfortunately chess.com puzzles do the same thing - reject your winning move because there is a checkmate in the hood. It is game logic applied to puzzles which are completely different disciplines.