The first stage of the tournament "named after Van Kanigem"

in my previous attempts, by day 14, everyone already had a town.
Therefore, I even had to deliberately wait until the end of the week to eliminate everyone – I didn't have enough strength. Total – 15 days.

It never occurred to me that the computer might not be able to capture at least one town, because even the Warlock had built two castles.
On day 15, the Sorcerer was clearly preparing to run and capture a second town (another hero was somewhere far away), and the Barbarian was standing a few squares away from his second town.
Even if I had half as good a situation as you, it would still take me 15 days, although not faster.
But alas...