"They wouldn't have been such easy targets, no. I'm glad to hear it, I suppose." He would have to admit that the only Squib he knew he knew was Filch. "It's enough of a burden during peacetime. Without someone marking you for murder." Or worse. He smiled, moving his queen another space, endangering a bishop and beginning to build another path to checkmate. "Essery. Of course. I am sorry. You needn't call me Headmaster," he said lightly, surveying the mess of stone dust on the floor. "You've taken a few respectable pieces, after all."