The cache is not at the published coordinates. You are looking for a magnetic cache that you will need to climb somewhat to get to. Tweezers may be very helpful.
Following are 6 pieces, which are snippets of pieces composed by Frédéric Chopin. They are all in a Major key. Some of the notes are assigned a number in red. The way each number is calculated is the same for every note and every piece.
There are 3 rules that yield a number each of their own, the product of which yields the number for each note. The first is a property of the note in relation to a property of the piece. The second is a property of the note. The third is a property of the piece.
Can you figure out how it works and find the values of all the notes assigned a blue letter from a to h?
All the information to work out the 3 rules is shown on the piece snippet. No external knowledge of the piece or Chopin is necessary (i.e. the "op" and the "no" of the piece is irrelevant), although general knowledge of musical theory will be important.
As a preliminary hint for the first rule, notice the notes assigned the number 0, and what the significance of these notes are for their particular pieces. Also, the third rule will naturally yield 1 for the first and fourth pieces.
The real coordinates are:
N 54° 1i.jkl W 000° 2m.nop
i = a * 2 + 3
j = b / 3 - 2.25
k = c / 4 - 3
l = (d + 2.5) * 2
m = e * 4 - 29
n = f / 3 + 1
o = g * 2 - 5
p = (h - 1.5) / 5
As with any puzzle of mine, feel free to message me if you want help with any aspect of this puzzle.
Congratulations to marions27 and cabbagepatchkids for FTF.
Thanks to ForeverSearching for pointing out a mistake with 2 of the red numbers only a few hours after this cache was published.
Last cache check: 19 September 2025