Tuesday, May 28, 2013


The puzzle in this case is simply to take your pencil and, starting from one black star, strike out all the stars in twelve straight strokes, ending at the other black star. It will be seen that the attempt shown in the illustration requires fifteen strokes. Can you do it in twelve? Every turning must be made on a star, and the lines must be parallel to the sides and diagonals of the square, as shown. In this case we are dealing with a chessboard of reduced dimensions, but only queen moves (without going outside the boundary as in the last case) are required.



haroldw said...

Great puzzles, often used in Computer Science to sharpen the mind. I never heard of these, that means you've done a lot of research to find these. of course those who see numerical patterns will be able to solve them quickly.

Anonymous said...

Sherlock Holmes Puzzles

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