The Jewel Game at Lurgan's Shop
In Simla, the curio dealer Lurgan Sahib trains Kim by laying a tray of jewels before him and a Hindu boy, covering it, and making each list what he saw; Kim loses badly, then practices until he can recall objects, their positions and flaws precisely. Lurgan also tries to hypnotize Kim into seeing a broken jug reassemble, and Kim resists by reciting the multiplication table in English. The episode shows spy training as a series of games: observation is drilled through repeated, scored play, and holding on to one's own frame of reference is what defends against manipulation.
