Dear Danish Geocachers !
It has come to my attention that my two boys, Rodney and Charlie, have been disturbing the normal calm at Værløse airfield by publishing geocaches. I apologize sincerely for any inconvenience caused by their doings, including their use of foul language and slang.
Oh, pardon my manners. Allow me to introduce myself. My name is Dr. Smith. I am a Professor here at the Institute of Technology, Jamaica. My field of expertise is Mathematics, for which I hold an honorary degree from Cambridge. My hobbies include geocaching and Bulgarian white-wine.
As for the boys, Rodney has in the past exhibited some small talent for geocaching whereas Charlie is utterly hopeless – in all respects. This is much to the dismay of his mother, my lovely wife Vivian.
To make up for the mess caused by my two boys, I present to you a geocaching problem of my own.
Below you see geochecker icons for a number of mysteries owned by my Danish friend, geo.jens. geo.jens is a great admirer of order and symmetry. Your task is to help bring symmetry to the geocheckers in such a way that all green numbers (correct guesses) are even, while all red numbers (incorrect guesses) are uneven.
Once this state is realized, the required data for the final step will be shown on this page. Mind you, if you manage to get all geocheckers into the desired state, then anyone will be able to see the next step (until the state changes again…)
Enjoy,
Dr. Smith.
Dansk
Smith er Rodney’ og Charlies far. Han er matematikprofessor fra Jamaika og højrøvet anglofil. Han undskylder sine sønners opførsel og giver os et mysterium at løse som erstatning. Opgaven går i alt sin ”enkelthed” ud på at få de viste geocheckere sat således at alle de grønne tal (de rigtige svar) er lige, mens alle de røde tal (de forkerte svare) er ulige. Når det er gjort vil der vises yderligere information på cachesiden, som skal bruges til at løse den sidste del af opgaven.
Step 2
If state not realized, shows statistics.
Dansk: Indtil geotjekker betingelserne er opfyldt vises lidt statistik.

Geocheckers
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Check it out, man'
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Check it out, man' II
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Flystyrt
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pi
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PPP - Perfekte Palindrome Primtal
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Sikke en service ...
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Kaninhop
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Den magiske stjerne
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Final geochecker
