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This logic quiz is probably the hardest in the world. The problem is simple, so at first you may feel like you can do it, but you will soon realize that it is reckless. ******** Two people will try this quiz. First, the first player enters the room. There is only an Othello board in the room. All 64 squares have already been placed with stones. However, each stone is completely random, whether it is white or black. Then, the game master will announce a number from 1 to 64. This is also completely random. The first player can choose and flip over only one stone placed on the Othello board. Then, he leaves the room. Next, the second player enters the room. Look at the Othello board and guess the number announced by the game master. That's all for the problem. In short, if the first player can use the Othello board to tell the second player the number he heard, it is a game that is cleared. ******** I doubt whether such a problem can really be solved. It's a nightmare problem. But there is a way to guess the number with certainty. #Mathematics