Which character from the story ''Rules of the Game'' is motivated by a desire to master ''invisible strength'' in life and in chess?

In Amy Tan’s story, Waverly Jong is a young girl who learns to play, and discovers she is truly gifted at, chess. Lindo, Waverly’s mother, is at first thrilled that Waverly has such a tremendous talent. As Waverly develops her skills at chess, her mother encourages her to take the game seriously and to strategize by developing her personal attitudes.
Because Lindo is the teacher and Waverly is the student, the motivation can be identified in both characters. Lindo’s ideas about looking deep inside and maintaining total self-confidence are contained in the idea of “invisible strength” that she promotes to Waverly. As it is her concept, one could say that she is more motivated to apply it. The person who needs to master the concept is Waverly, as she is the one who is quickly improving at chess and needs all the inner resources she can muster. This proves especially true when she realizes she must defy her mother.