A duel between three people is actually called a truel.

The information on the National Center for Biotechnology Information's website confirms that truel is a three-person competition of the classic duel.

The information on the National Center for Biotechnology Information's website confirms that truel is a three-person competition of the classic duel.According to the scientific report published by NCBI, truel is a three-person expansion of a duel. It originated from Darwinian evolutionary theory, the survival of the fittest. It is the way of mentioning the mechanism of natural selection and states that the fittest struggle to fight for survival and the reproduction increase in the number.

The journal published by Nature mentioned that the survival of the fittest originated from Darwinian evolutionary theory refers not to an organism's strength or athletic ability, but rather the ability to survive and reproduce. But, in certain cases, the fittest does not significantly survive, the extinction of the dinosaurs being a classic example.