DISCUSSIONS on “Rules for online games in HoMM3 and formulas for calculating player rating.”

The situation is one-to-one identical to when 1 serpent flies away from a legion of skeletons or the destruction of a catapult.

The situation is more identical to your epic final against Hellight. In both cases, it's a developer oversight. Imagine a similar situation where you attack with a power stack (e.g., Wyvern, Archangels, cows, etc.) a scout hero on serpents, he hides in a corner, and what to do next? Buyout/surrender?))
Attacking a serpent with skeletons, the player should keep the stalemate option in mind. This case is different, rather in the category of bugs..