
Therefore, if we start with the picture on the left below, we can turn that light off without affecting any other lights. The corresponding lights we will need to hit for this are given in the table below. This light can also be turned off without affecting any other light. In particular, we will focus on the light in the second row second column of the entire board. Center Light Max number of lights Middle Corner We now move out from the center to the surrounding lights. In order to do this, we would press the buttons as described in the table below. However, it will be helpful later if we describe a way to turn this off without changing any other light. The first piece we will turn off is the center piece. In doing this, we will be able to decrease the maximum number of lights on, hopefully, to 0 lights. We will then continue to turn lights off. We will then define an perform some action that will lead to turning a specific light off. Here, our goal will be to start with any board. We could, then, individually turn off any one light until all the lights were out. Last time, we were able to give a method for solving any puzzle by showing how to change only one light at a time.
