CHALLENGE: 

DATE/NUMBER:  31-Aug-2002/46

MAP: 

Our cause is a secret within a secret, a secret that only another secret can explain; it is a secret about a secret that is veiled by a secret. -- Ja 'far as-Sadiq (aqb Umberto Eco)

The quick brown fox jumps over the lazy dog. -- Anonymous

I became interested in clues that reveal themselves over time, and the related phenomena of distributed clues. Some interesting stuff has already been done in these areas, so I felt like doing some more experimentation.

Anyway, what we have here is a clue, but all the letters are hidden, sort of like on Wheel of Fortune. If you find a letter, you can turn over all occurrences of that letter in the clue, if you want to. The letters, of course, are hidden in letterboxes.

To turn over a letter, note its password and verification number, and use this form. In any case, if you find one of these things, please either leave it in that box or put it in another, as it may be useful to someone else.