Yeah...:)... Starting on expert, such luck is unlikely to happen to us anytime soon.
For as long as I've played, I've always noticed that trolls have some kind of peculiarity: something like stone skin!
He withstands SUCH hits, and for SO long, that I always got the impression that THIS IS A GLITCH in the game.
A clear example is when you take the Castle!
A troll can withstand shots from a tower up to 5 or more times (without losses) — this is simply UNreal. Any other last-tier monster (except dragons) WOULD have fallen!
Has anyone who has been playing HoMM1 for a decent while noticed this?:)
Respectfully,
Prorock.

Как много в жизни есть путей
Для добродетелей и мира.
Я вернулся...