It's a game that was invented by witches to prevent them from becoming consumed by boredom. The game master presents a series of murders having been done by supernatural means. It then falls to the opponent to explain the circumstances under which the murders are, instead, entirely earthly.
Whoever presents more the most compelling reasoning at the end of the final round is declared the winner.
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Whoever presents more the most compelling reasoning at the end of the final round is declared the winner.