You won't find the physical cache at the first coordinates. Here you can enjoy one of the best kept watchtowers on the island. This tower was named after the Grandmaster Alof de Wignacourt. Look at the board above the main entrance to learn the year when it was erected.
Year of building: YYYY = ABAC
A couple of meters distance from the left wall of the tower there is a monument of a charitable woman. Look at the board:
Born in the year : = YYYY = AFGC / Died in the year : YYYY = AQAB
The next coordinates are the following:
N G(B-A)° (B-A)B.Q(B-A)(B-A)B' E A(A+G)° (A+A)(G+A).(G+A)A(A+A)(G+A)'
At the next location you will see 12 boards of marble with inscriptions of the same content but different languages in a portico. Choose your language and take the information for the final physical cache:
How many statements / sentences are there on the board? No. of statements = A
Which one-digit no.do you see before the third statement? = B
Which one-digit no.do you see before the fourth statement? = C
Which one-digit no.do you see before the fifth statement? = D
Which one-digit no.do you see before the sixth statement? = E
N (B+C)(A-B)° (A-B)(D-C).B(A-B)(A-B)' E B(A-C)° C(C+C).(A-B)(D-B)A'
Good luck!