In a world where shadows can be frozen in place at the command of their caster, Liora has just frozen their shadow in a clear, open field at noon, marking their location. Liora then walks 20 steps north and eavesdrops on a conversation between Keiji and Mirembe, who are discussing the location of a hidden key. Keiji, who has not seen Liora or their shadow, tells Mirembe that they have placed the key directly under the "marker of the first shadow" thinking their own shadow is the only one around. Mirembe, who has seen Liora freeze their shadow earlier, suspects Keiji is mistaken. If Mirembe knows that Keiji is unaware of Liora's frozen shadow, where should Mirembe search for the key?

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When Liora freezes their shadow in place at noon, the shadow would be at its shortest length and be positioned directly underneath them if the sun is at its zenith. When Liora walks 20 steps north, they leave their frozen shadow behind. Keiji, under the impression that their own shadow was the only one present, mistakenly refers to their own shadow as a marker for the hidden key. However, since Keiji is unaware of Liora's frozen shadow, the key will not be placed under Keiji's shadow, but rather, where Liora's shadow was frozen. Mirembe, who knows about Liora's ability and has seen the shadow being frozen, should search for the key at the original location of Liora's shadow in the open field, which is now 20 steps south of Liora's current position, to find the key.