Naked Empire pg 640-686

Kahlan exchanged herself for the fake antidote. Nicholas took her into their fortified base and captured her soul to end her resistance. Richard woke up in time to realize that his location was about to be hit by wizard's fire, and he moved everyone around. When they avoided the danger Richard realized that Kahlan was not there, and learned what had happened. In the morning he attacked the base to recover Kahlan, but Nicholas had already fled. They were successful in the attack against the base with the help of Ann and Nathan who arrived at the end of the fight. Nathan tried to straighten out Richard's problem with the gift, but couldn't, so Richard decided to use the little time he had left to go save Kahlan. They perused Nicholas relentlessly and caught up to him. While planning the attack, Richard went out to think and realized what he was missing. The key to his problems. "Deserve Victory" the meaning of the wizard's eighth rule was for him not Owen's people, and he now knew why.

He did not tell us why it is the key yet and I lack solid speculation on the meaning it was trying to communicate to Richard. I definitely has something to do with unlocking his gift, but I am unsure what. Nathan gave him advice that a Slide is vulnerable when outside his body, so Richard will try to use that to hi advantage, but I do not know how he will get Nicholas outside his body when Richard is close because he knows right where Richard is all the time through following him.