She listened with an interested an expression, occasionally glancing up at him before looking back down to the board. "Uh huh. I see."
"And each of these," he said, gesturing to the various pieces, "have a different role in protecting him. So these guys are the pawns."
"That's the queen," he said. "She's badass. She can move in all directions for as long as the path is clear. Don't let her die. If she does, the king will inevitably die."
"And then there's the rook. He can move as far as he wants, but only in straight lines. This guy here is the bishop and he can move as far as he wants, but only diagonally."