         }
     }
 
+    /// Creates castling rights for `color`.
+    public init(color: Color) {
+        self = color.isWhite ? .white : .black
+    }
+
     #if swift(>=3)
 
     /// Creates a set of rights from a sequence.

    /// All castling rights.
    public static let all = CastlingRights(Right.all)

    /// The rights.
    private var _rights: Set<Right>


        public static let all: [Right] = [.WhiteKingside, .WhiteQueenside, .BlackKingside, .BlackQueenside]

        #endif

        /// White rights.
        public static let white: [Right] = all.filter({ $0.color.isWhite })

        /// Black rights.
        public static let black: [Right] = all.filter({ $0.color.isBlack })

        /// The color for `self`.
        public var color: Color {
