The image represents two computers and a group of network nodes on the Internet. Each node has a router capable of passing files to another connected network node and also capable of finding an alternate route if a previous connection slows down or is no longer available. The shaded network nodes, Routers D, E, F, J and K, are currently not capable of transmitting any packets to a connected network node. Considering the current status of this network, with five dysfunctional routers. What is the smallest number of routers necessary to connect Computer 1 to Computer 2?