Unsure which puzzle you are referring to as they are not numbered so I will cover all of them. 1st puzzle: After you beat the boss you will have 3 tablets on the wall with Fire Ice and Storm on them. There are also 3 braziers in the room burning flames. In order to solve the puzzle you must change the flame colour to match the sequence on the wall. Facing the wall this means the left brazier is to stay red, the center brazier is to change to a blue flame and the right brazier is to change to a purple flame. Note that the above different puzzles need not be done #1,#2,#3.