Final answer:
In 'Ender's Game,' the battle following Ender's fight is considered extra unfair because it breaks the rules of rest periods, with Ender's team being outnumbered and victory conditions being altered.
Step-by-step explanation:
The question refers to a scene in Orson Scott Card's novel, Ender's Game, where the protagonist, Ender Wiggin, faces a battle soon after another fight. The unfair aspect of this subsequent battle is that it is scheduled with very little time for Ender and his team to rest and prepare, breaking the established rules for rest periods between battles. Moreover, Ender's team is outnumbered, and they are not allowed to enter the enemy's gate, which is the usual victory condition. These factors combined make the battle unusually challenging and serve to test Ender's tactical genius and command skills under extreme pressure.