It was actually "111" housing space of troops not "110" the siege machine is 1 housing space i didn't knew that's count or not but after some time i check the leaderboard of that challenge and saw some people done it with only 1 housing space so it actually counts.
It was actually "111" housing space of troops not "110" the siege machine is 1 housing space i didn't knew that's count or not but after some time i check the leaderboard of that challenge and saw some people done it with only 1 housing space so it actually counts.