I am in the area after the chess game I have found 3 Golem riddles and answeared the 2 where you get teleported to a new area. However I havnt solved the question by the single Golem in the main area. There is one door left that I cant open does the Golem thats left give me a means to open it? or do I leave and talk to the dwarf in Ulgoths beard who was selling ward stones? If I do have to leave how do I get back in cos I got teleported to the chess game area after killing the 4 elemental guardian. What do I do?

SPOILERS (mark the spoilers please !!!!!)
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- I havent played for a while, but i think the golem riddles dont open/close any door, you just need to complete the 3 so that durlags ghost opens the door that leads to the final battle.
about the wardstones, you do need the wardstones that the dwarf sells (even the fake one). if you go out, i think you can go back simply entering the room from which you got teleported to the chess game and youll be teleported again (ive never tried it but i heard it works).

have you completed the acid part of the map ? it might be hard to find ALL the hidden rooms there, be sure to explore them all.

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http://www.angelfire.com/anime2/memnoch/ertai2.gif "I´ve been captured... and I don´t care" -Ertai, Captive of the Blinding Angel