Batch 2 - Class 44 - Cryptography (Kushaan), Puzzles

• (Dudeney 167) - A wizard placed ten cats inside a magic circle and hypnotized them so that they should remain stationary during his work. He then drew three circles inside the large one so that no cat could approach another cat without crossing a magic circle. Can you do that?

• Kushaan - Cryptography, Shift/Caeser Ciphers and Monoalphabetic Ciphers
• MC Diaries Y1, Chap 1: Problem Set - Problem 2 - Swimming fish - Moving only three matches, make the fish swim to the right

• AmusementsInMathematics 393.—THE TWOROOKS. This is a puzzle game for two players. Each player has a single rook. The first player places his rook on any square of the board that he may choose to select, and then the second player does the same. They now play in turn, the point of each play being to capture the opponent's rook. But in this game you cannot play through a line of attack without being captured. That is to say, if in the diagram it is Black's turn to play, he cannot move his rook to his king's knight's square, or to his king's rook's square, because he would enter the "line of fire" when passing his king's bishop's square. For the same reason he cannot move to his queen's rook's seventh or eighth squares. Now, the game can never end in a draw. Sooner or later one of the rooks must fall, unless, of course, both players commit the absurdity of not trying to win. The trick of winning is ridiculously simple when you know it. Can you solve the puzzle? 

  Answer: Whoever stays on diagonal from the other person's rook wins

• On perspectives: Why did the chicken cross the road? (Can try to quiz students both ways)

  The fittest chickens cross roads. [Darwin]The road moved beneath the chicken. [Einstein]Chickens at rest stay at rest, chickens in motion cross roads. [Newton]We're not sure which side of the road the chicken was on. [Heisenberg]

• It had a dream. [Martin Luther King Jr.]
• Because the road was there. [Sir Edmund Hilary]
• None of your business;  we own the chicken, we own the road. [Bill Gates]
• The news of its crossing has been greatly exaggerated. [Mark Twain]

• How many cats can you accommodate on Preclass Exercise if you are allowed to draw four circles any which way you'd like?