It seems that the Hypercube affects this place in a very strange way - for example, it’s not letting the two spirits of treasure hunters to rest in peace until they figure out who between the two of them is a winner of some weird game. Hm, what would've happened if you’d refused to finish an already started game?..

Nevertheless, you’ve had neither the time nor the inclination to think about that and you went further. In less than a few minutes you saw something you’d rather not see - a real god damn ghost! Judging by the similarity between the ghost and the portrait of a man hanging in a recently visited room, it’s safe to assume that this is the Lord Escher himself. It has become increasingly clear why none of the treasure hunters returned from the island for so many years. There’s no going back now, so it seems like you’ll have to come to an agreement with him one way or the other.

"Only the one who can tell the truth from a lie will pass!". These were the first words the ghost said, when he saw you. He pointed to a lying on the floor set of double-sided cards which had the numbers written on them. Maybe these cards also belonged to one of the previous visitors of the castle, and then Lord Escher just decided to use them as a tryout for the seekers? Well, it doesn’t matter now. In order to pass you need to determine whether among the several first cards there are the ones that doesn’t belong.