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@ -222,7 +222,8 @@ Bear in mind the main purpose of this quiz is for you to test your understanding
115. What's the first sentence of the lyrics of the [Free Software](free_software.md) Song by [Richard Stallman](rms.md)?
116. Consider we record moves in [chess](chess.md) with a simple notation as *<SQUARE_FROM><SQUARE_TO>*, for example *e3e5* or *g1f3* (i.e. we don't care about which chessman moves, if check or promotion happens etc., only start and end square are recorded). How many such moves exist if we only consider those that can ever legally happen (i.e. don't count moves such as *a2g1*, *b3b3* and so on)? Castling just means moving the king to his castled position.
117. We keep hearing about "first world" and "third world", but what about "second world"? Why is that term not used?
118. Did you enjoy this quiz?
118. [Jara Cimrman](jara_cimrman.md) invented a brilliant self-powered mine elevator design that worked as follows. When miners came to start a new shift in the mine, two of them would enter a down-coming lift, which by the weight of the two workers started to move down and lifted another lift up; in the up-coming lift one miner, ending his shift in the mine, would come up (as he was lighter than the two miners in the down-coming lift). However they soon realized this system had one fatal flaw. What was it?
119. Did you enjoy this quiz?
### Answers
@ -344,7 +345,8 @@ sin(x) / cos(x) - log2(2) = tg(x) - 1*, so we get *tg(x) >= 1*. So that will hol
115. "Join us now and share the software."
116. Should be 1792 { Unless I counted it wrong lol. ~drummyfish }. We can count this by just considering each square on the board and summing all possible queen and knight moves from that square (queen and knight together cover all possible moves). Queen can obviously end up on any square and from knight's walk we know we can place a knight anywhere as well. This can probably be computed even manually but writing a quick program does the job quicker.
117. The term "second world" used to exist -- during the Cold War "first world" was used for the "western world", countries allied with US/NATO; the "second world" meant the "USSR world", and "third world" everyone else. After dissolution of Soviet Union the second world basically stopped existing, or rather merged with the first world, and since then the terms got more of an economical meaning rather than political.
118. yes
118. Two miners were coming down but only one up, more workers were entering the mine than were leaving, so the workers started to pile up in the mine. Cimrman solved this by advising the workers to eat a lot before the shift and then work hard to lose some weight so that two heavy miners would be able to lift two lighter ones.
119. yes
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