Let's play a little Magic Game. I'm going to show you a square like this one.
You're going to pick ANY of the above names, and make a series of "moves" from that starting point, landing on a new name. Then, you'll make a number of moves from that name, and so on. Each "move" must be horizontal or vertical - no diagonals are allowed. For example, if you were on "ASIMOV", and you were told to make TWO moves, you could move to MAXWELL, and then end on EINSTEIN. Or, you could go to GOULD, then to DARWIN. You can even go to GOULD, and then backtrack to ASIMOV. If a name gets removed, however, you can NOT move to that empty square.