"You swapped my white rook with your black rook, even neutralized my check,"
Amidst the verdant grass, the figure sitting across the chessboard quietly gazed at the man in military uniform before him, smiling, "But your pieces are running low."
"What I can do is inherently limited."
The man in military uniform slowly picked up the king, moved it two spaces to the right, and then moved the unmoved black rook on the right to the left of the king, drawing the rook into the battlefield's center.
"Castling?"
The figure opposite him paused for a moment, then chuckled, "You've kept that black rook deliberately still just for this move?"
Castling is a specialized chess rule wherein, under conditions where neither the king nor the involved rook has moved and the space between them is clear, the king moves two spaces toward the rook, and the rook is positioned beside the king.
