The Survivors challenge the Iron Tigers in a battle of both brains and brawn.
You might think the math is 
there to preserve your stamina.
قد يبدو أنّ الغرض من المسائل الحسابيّة 
.هو الحفاظ على القدرة على التّحمّل
Auf den ersten Blick verbraucht 
Kopfrechnen auch Ausdauer.
En apparence,
les calculs conditionnent l’endurance.
Potresti pensare che fare di conto
 ti serva a conservare le forze.
Você pode pensar que a matemática
está ali para preservar sua energia.