她是个优秀的游戏玩家，在国际象棋比赛中屡获佳绩。

She is an excellent ___game-player, winning many championships in chess.

他在办公室是个老谋深算的玩家，总是设法让同事背黑锅。

He's a notorious ___game-player in the office, always maneuvering to make others take the blame.