opera.title
opera.subtitle
opera.description
opera.players.white.title
opera.players.white.name
opera.players.white.info
opera.players.black.title
opera.players.black.name
opera.players.black.info
opera.controls.speed.label:
♜
♞
♝
♛
♚
♝
♞
♜
♟
♟
♟
♟
♟
♟
♟
♟
♙
♙
♙
♙
♙
♙
♙
♙
♖
♘
♗
♕
♔
♗
♘
♖
opera.moves.title
opera.analysis.title
opera.legacy.title
opera.legacy.content