The work-around
Time for a good old Possibility List. This time it's on one of those subjects that seems to nag at a lot of people. Me, not so much-- probably because I see lots of ways to handle it.
For Harry to defeat Voldemort, they need to face off after the Horcruxes are destroyed. Voldemort can't realize that the Horcruxes are destroyed at that point, or he'd just be able to run off and make more. So how does Harry face Voldemort without the Dark Lord knowing that his Horcruxes are gone? Possibilities:
That last one's probably my favorite candidate, if only because there's the potential to tie in so many pieces from the series. It even works with various interpretations of Snape's goodness or badness or neutralness, as long as the idea that Snape's great regret is connected to Lily is accepted. It may be dangerously specific, though. The more specific any Book 7 theory is, the more likely it'll be wrong. (Well, except the one... But we're not there yet. Soon, I think.)
For Harry to defeat Voldemort, they need to face off after the Horcruxes are destroyed. Voldemort can't realize that the Horcruxes are destroyed at that point, or he'd just be able to run off and make more. So how does Harry face Voldemort without the Dark Lord knowing that his Horcruxes are gone? Possibilities:
- He does know, but he's put in an unescapable situation with no opportunity to create another Horcrux before facing Harry.
- He's just too arrogant-- the possibility of Harry finding and destroying the Horcruxes never even occurs to him.
- The possibility occurs to him, but he won't risk trying legilimency on Harry. If Harry "pushed back" (like he did with Snape), there would be a risk that he would see into Voldemort's mind and find out about the Horcruxes or other secrets.
- The final confrontation is too abrupt for any consideration. It's over before Voldemort knows what hit him. (I so highly doubt this, but it is technically possible.)
- Harry learns occlumency.
- Harry manages to successfully bluff (something just short of real occlumency).
- Harry's LUV Power invades Voldemort's brain and turns it to mush, or some other phenomena we can't really predict accurately occurs.
- Harry dumps the relevant memories into the Pensieve or bottles them so Voldemort will never know they existed. (But will Harry still know they exist?)
- Harry doesn't know that all the Horcruxes are destroyed, so Voldemort can't possibly get that information from him. Conveniently, though, it turns out that all the Horcruxes are gone before the end.
- Voldemort realizes that Harry's discovered the Horcrux secret. But he can still see (for example) Nagini's safe, so he knows he's fine. Or thinks he's fine, as obviously some twist would kick in and it wouldn't work out as he expects.
- Afraid to enter Harry's mind himself, Voldemort has proven-loyal Snape raid Harry's brain for him. But after gazing into Harry's Lily-esque eyes to perform legilimency, Snape doesn't tell the Dark Lord what he's really seen in Harry's mind. Snape ends up aiding in Voldemort's destruction.
That last one's probably my favorite candidate, if only because there's the potential to tie in so many pieces from the series. It even works with various interpretations of Snape's goodness or badness or neutralness, as long as the idea that Snape's great regret is connected to Lily is accepted. It may be dangerously specific, though. The more specific any Book 7 theory is, the more likely it'll be wrong. (Well, except the one... But we're not there yet. Soon, I think.)