Re: Where's Waldo? (challenge)

[der Mouse <mouse () rodents montreal qc ca>]

> > All the "solutions" I've seen don't prove anything to anyone until
> > after the "proof" recipient has found Waldo - this may have been
> > acceptable by the intent of the original author of the problem, but
> > it's sure not how I read the wording.

> So, we need to come up with a way to present information to the
> competition that proves (when read), that we know the answer, without
> giving away the answer?

It doesn't necessarily need to be just a one-way transfer of a single
blob of information; it could be interactive (as most - all? -
zero-knowledge proofs are).

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