Harry and Hermione stayed quiet, watching Ron think. Finally he said, "Now, don't be offended or anything, but neither of you are that good at chess —"

"We're not offended," said Harry quickly. "Just tell us what to do."

"Well, Harry, you take the place of that bishop, and Hermione, You stand next to him instead of that castle."

"What about you?"

"I'm going to be a knight," said Ron.

The chessmen seemed to have been listening, because at these words a knight, a bishop, and a castle turned their backs on the white pieces and walked off the board, leaving three empty squares that Harry, Ron, and Hermione took.

"White always plays first in chess," said Ron, peering across the board. "Yes... look..."

A white pawn had moved forward two squares.

Ron started to direct the black pieces. They moved silently wherever he sent them. Harry's knees were trembling. What if they lost?

"Harry — move diagonally four squares to the right."

Their first real shock came when their other knight was taken. The white queen smashed him to the floor and dragged him off the board, where he lay quite still, facedown.

"Had to let that happen," said Ron, looking shaken. "Leaves you free to take that bishop, Hermione, go on."