On the bottom of a lake there is a treasure ! ...but what lake? Who helps me find it ?

(C) (CA) . (C) (D) (CA) (CB) () (D)
(CBA) . (BA) (CBA) (A) (A) (D) (C)

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    $\begingroup$ I think this is a binary-coded decimal. If this was an 8421 encoding, we have D=8, C=4, B=2, A=1. This gives 45485608 on the first line and 7371184 on the second line. My next guess is that this are coordinates, but checking them fails to find a lake. $\endgroup$
    – Element118
    Commented Apr 19, 2016 at 14:46
  • $\begingroup$ I have modify the description... :) $\endgroup$ Commented Apr 19, 2016 at 15:00

1 Answer 1


If we use @Element118's binary-coded decimal system, the problem of:


Can be translated to:


Which can be reduced to:


When searching for these coordinates, we get:

Lago di Teleccio - https://goo.gl/maps/JfKHtphpXZq


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