The Square and Circle Puzzle
Cut a square piece of cardboard, marked as shown in Fig. 3, into four pieces of equal size and similar shape, so that each piece shall contain three of the marks, and so that none of the marks are cut. Fig. 4 shows that the puzzle is solved by cutting the lines A from a quarter down on the left-hand side to half-way across, then down through the middle to three-quarters of the distance from the top, and then along to the opposite side of the card. The line B takes a corresponding course, being commenced on the top line at a quarter of the whole distance from the right-hand side.