On the very first day, I captured the dwarf mine with 15 dwarves in each stack, and also immediately set up a manticore ambush. On the third day, I captured the double mine. Until the end of the week, there were minor local battles while building up the castle. At the beginning of the second week, I captured the nagas' lair with 30 nagas and a Great Serpent and positioned myself at the entrance to the treasury. Suddenly, I received news of a surrender.
Thank you for the game.