I can't open the chest in the centre of the room with the code written on the wall, i can't find right combination. I combined both the codes found in the Upper Left room and Lower Right room but it doesn't work. Why?
You're solving the puzzle correctly - you have to combine the numbers and input them into the chest. It should be working, as no bugs regarding this puzzle have been reported.
We're only speaking for the official version, of course. ^^
