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A cache by rokuj Send Message to Owner Message this owner
Hidden : 09/23/2018
3 out of 5
2 out of 5

Size: Size: micro (micro)

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Geocache Description:

Kätkön bogus-koordinaatteihin ei tarvitse mennä, oletettavasti sieltä ei löydy mitään kätköön liittyvää. Ratkaise mysteeri ja saat koordinaatit. There is no need to visit the bogus coordinates just solve the mystery to get the final coordinates.
(defconstant +base+ (+ (* 2 30) 5))
(defconstant +key+ "PSILCROKUJ")
(defparameter +indx+ (- (length +key+) 1))

(defun pos (item)
  (- (char-int item) +base+))

(defun get-key ()
  (let ((key (char +key+ +indx+)))
    (setf +indx+ (- +indx+ 1))
    (when (< +indx+ 0)
      (setf +indx+ (- (length +key+) 1)))
    (pos key)))

(defun decode (item)
  (code-char (+ (mod (- (pos item) (get-key))(+ (* 4 6) 2)) +base+)))

(defun decrypt-str (encr)
  (map 'string #'decode encr))

Additional Hints (Decrypt)


Decryption Key


(letter above equals below, and vice versa)



12 Logged Visits

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Coordinates are in the WGS84 datum

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