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1. 121 cons by the road were NOT checked, and the third one was taken immediately. What do you think? Would you spend 1 move on checking? Well, if you know it's 3, then there's no point in checking, of course.
2. A reasonable option would have been to take 2 more cons (which is quite possible) and destroy the Garrison on the second turn to hinder the opponent. But here, it gave the clear impression that he was going for the Boots.
3. Regarding the library, I noticed it right away, but didn't say anything. It's immediately clear that the block is on both sides in the metro, and he's NOT going there, without scouting. Instead, he's going for the stones.
4. Skill tree? Under what influence can one refuse Earth at level 116, when you don't even have a SINGLE GUILD, and you can't know if it's slow or haste or something else THERE, but you have 4 cons? Nonsense.
5. Oh yes, the mega-creature. No other explanation was given. But there is one. Map hack.

The explanations seem clear.

I didn't find them clear. The key phrase is "I was just lucky."