What incidents show that rainsford is worthy foe for general zaaroff?

Rainsford's ability to outsmart Zaroff by creating a false trail and set a trap shows his cunning and resourcefulness. His agility and survival skills are validated by his ability to evade Zaroff's hunting dogs and navigate the dangerous terrain of Ship-Trap Island. Rainsford's prowess in the final duel with Zaroff demonstrates his resilience and tactical acumen as a worthy adversary.