in this puzzle Black wins by playing KxB and then Kg6. I was not convinced and I tried to go on thanks to the analysis of the program. The defense is incredible and typical of a non-human mind. (unless it is Korchnoi)
lichess.org/training/61882Reminds me of this puzzle (which I failed some time ago):
lichess.org/training/61281I actually like these puzzles quite a bit. The two posted so far remind me of examples straight out of "Art of the Attack" by Vukovic. Bxh7 is not always a sound move and ...Kg8 and ...Kg6 are resolute ways to accept the sacrifice and successfully defend.
That said, they could definitely be improved to require us to play a couple more moves.