For this puzzle you will need eight pennies and eight nickels. Arrange them on your desk in four rows of four so that they alternate like a checkerboard – every other coin should be opposite, as shown below.
The challenge is to move two of the coins to different positions so that coins are arranged in columns of all pennies and all nickels. For example, the far left column could be all pennies, the next all nickels, the next all pennies, and so on. When you have discovered a solution, draw a picture of it in the space below or on the back, showing which coins you moved and where you placed them.