Right, yeah... you got it. I've never even heard of a Go board, so I've still no idea what you just expressed. I know GIYF, but I really don't care enough. I was just making a vague illustration keeping it simple as I could. I'm sure your analogy was wonderful as well. Good on you.
Either way, the entire reason The Crayak was even after the Iskoort, was so that they wouldn't interfere with his players, The Yeerks, with their parasitic, imperialistic, infectious, spreading.
If the Yeerks weren't a part of his plan, what would be the point of killing off the Iskoort?