I agree with you, Ziryab.. These tactical problems or exercises -- I don't like the term "puzzle," which I reserve for jigsaws -- are second rate compared to what you find in books. The solutions sometimes throw in a spite check, giving up the queen. It's pure computer hackery.
You probably know of these books, but I'll list them here anyway: August Livshitz's Test Your Chess IQ: First Challenge, Master Challenge and Grandmaster Challenge, now available in a single book. I also found John Nunn's 1001 Deadly Checkmates as well as the quite difficult John Nunn's Chess Puzzle Book worthwhile. Though John Nunn is a thorough analyst, two things I hold against him are making the term "puzzle" popular and denigrating Irving Chernev.
My favorite book categorizing tactics is Yakov Neishtadt's Improve Your Chess Tactics: 700 Practical Lessons & Exercises formerly Test Your Tactical Ability. Of course, there are many more from Reinfeld to material hot off the presses. I use Forward Chess, and there are plenty of exercise eBooks available.
Folks often complain that puzzles seem computer generated or that they call for moves that require you to think like a computer. I don’t know about all that, but they are certainly not vetted by a human.
I failed this puzzle several moves in although I clearly found the key idea (avoiding stalemate) and made only moves that advanced toward certain checkmate. My error was choosing an escape route from endless checks that was eight moves longer than the optimal mate in eleven.
I played Ke5 here. My idea was to walk my king to c3 where Black’s king can then use a3.
Is it really so important to calculate eight moves deep in such a position?
Maybe consider partial credit (as existed before the reset that knocked my rating down 1000).