GC2N1TV Pentominoes (Unknown Cache) in Eastern England, United Kingdom created by gillywig

gillywig: Archiving. It's been a while since set.

A cache by gillywig Message this owner

Hidden : 2/1/2011

Size: Size: small (small)

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Geocache Description:

Pentominoes are plane shapes made of 5 squares.

There are 12 different arrangements.

These can be placed into a rectangle 10 by 6 or a rectangle 12 by 5.

Also, and less well known, is that they can be placed into two 5 by 6 grids.

You are looking for a small clip-lock.

Not knowing how easy/difficult this will be, clues may follow.

Additional Hints (Decrypt)

A51 NO.PQR R000 NO.PQS

Decryption Key

A|B|C|D|E|F|G|H|I|J|K|L|M
-------------------------
N|O|P|Q|R|S|T|U|V|W|X|Y|Z

(letter above equals below, and vice versa)