Fill in the blank (_) in the following sentence from the following choices.
Sentence: In the chess game, the rook piece took the opponent's knight piece since the _ was at a disadvantage.

Choice 1: In the chess game, the rook piece took the opponent's knight piece since the rook piece was at a disadvantage.
Choice 2: In the chess game, the rook piece took the opponent's knight piece since the knight piece was at a disadvantage.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
2
2.