---------------------------------------------------------- Puzzle changed --------------------------------------------------------
29.09.2020
Changes in Otaniemi continue and the latest impact of the damned 
raide-jokeri is that one more sign has disappeared. This makes it harder to find the remaining five (5) signs, therefore the location of the sixth sign is given here as a bonus: N 60 11.177 E 024 49.320. Thus one needs to find five signs in addition to the given one to get the needed six locations for the formula. Otherwise the puzzle is as described below.
27.01.2019
Due to many changes in Otaniemi, some of the signs in the original set-up of the puzzle have been removed. Also the original final location has not been available anymore since 2016. Therefore the puzzle has been changed as follows.
To calculate a reference point for the cache you need to find current six (6) signs and then take an average of their coordinates. The true bearing from that point to the cache is 30.72*B degrees and the distance to the cache is 15.23*A meters. You can find the values A and B by visiting the cache Alphabet M - Mousetrap (GCMNDX) first.
Should you for some reason need the orginal final coordinates, please use the following corrections N -0.006 E +0.022. If you have done the original puzzle, please use these corrections reversed to get the current final location.
------------------------------------------------------- Original puzzle below -----------------------------------------------------
To find this cache you need to visit the cache Alphabet M - Mousetrap (GCMNDX) first. There you can find the values A and B.
 |
The given coordinates point to one of ten "Otaniemi - Otnäs" signs that have recently landed in the area. To calculate a reference point for the cache you need find all ten of them and then take an average of their coordinates. The true bearing from that point to the cache is 30.7*B degrees and the distance to the cache is 17.39*A meters.
|
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.