Quote:

Unfortunately, it's probably impossible for you to do the last puzzle now

It's something that you really have to plan for from the start of the game - particularly as the skill required is not only the hardest to master, but the one that has least opportunities of mastering. I literally had to allow no more than four villagers to master this skill, otherwise the others would have "used up" their training chances.




Hmmm, sounds like breeding to me.
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The VI