Connected Lights Continued
Here are 4 connected lights (where flipping one switch on a light will change the state of itself and its neighbours) in a circle, initially all off.
Here are 4 connected lights (where flipping one switch on a light will change the state of itself and its neighbours) in a circle, initially all off.
Flipping the switch of one light in this chain of connected lights will change the state (on O or off X) of the corresponding light (highlighted) and its immediate neighbours.