To find this cache you need to visit the cache
Alphabet G - Gargantuan Cache (GCM21H) first. There you will
find the key to solve this mystery.
The given coordinates are a reference point for the cache.
A magic square is a square matrix consisting of positive
integers 1 ... n2 arranged in such way that the
sum of the numbers in any horizontal, vertical or main diagonal
line is always the same number - the magic constant.
One way of constructing an odd magic square (number of
rows and columns is an odd number) is to place number 1 to the
middle on the top row. Then place the next number one row up and
one column left. If you cross the line continue from the opposite
side. When you bump back to number 1 move down one row.
Use this method to generate a 9 x 9 matrix. Divide it by
the magic constant and multiply it by 9. The numbers you need to
get the final coordinates are in this matrix. Once you have figured
out the right figures add them to the minutes of the initial
coordinates.
To guarantee the continuity of the series, the following rules
apply:
- The first finder of this cache must place a cache corresponding
to the next letter in the alphabet within two weeks from the find.
The cache must also be named like "Alphabet ? - ?...", where ? is
the next letter and ?... is any name beginning with that
letter.
- The next cache must be placed within the capital city region.
That is, within the limits of Helsinki, Espoo, Vantaa or
Kauniainen.
- The cache description must be constructed so that the cache can
only be found by finding the previous alphabet cache. The preferred
way is to write the final coordinates of the cache into the log
book of the previous cache.
- These rules must apply also to the rest of the caches. Please
copy these rules to the description.
Please don't rush yourself to be the first finder if you can't
quickly put up the next cache. There are plenty of geocachers in
the capital region who can.