(Warning: Heavy reading incoming. I suggest writing stuff down...) It's now the year 2150, and you're one of the few people who didn't leave earth twenty years ago. Why? A deadly disease overtook the planet, and you happen to have immunity. There are now less than ten million people on the plane...

The Blue Eyes puzzle has become increasingly popular with loads of questions based on in it. Some ask for explanations, while others are variants. Since I don't have the time, could someone please create a tag and tag all the related questions?

I've recently answered this question and noticed a weird situation. The author of the puzzle had in his mind a solution, which happened to be very similar to my answer. Though, he decided to assign the "Best answer" to another solution, simpler and easier to understand, but completely different f...