The main task of mahjong is the complete cleansing of the field from the stones. That's what you'll do in the game Pile of Tiles. It so happened that in the desert before the Egyptian pyramids appeared an unknown pile of white stones of the same shape with mysterious inscriptions. They emerged overnight as if fallen from the sky. At first they simply decided to remove them, but noticing the inscriptions and drawings, summoned experts and representatives of various branches of science up to those who are studying the probability of an alien invasion. They tried to get one stone out of the pile for research, but it does not succumb. Accidentally at the same instant, on the other hand, someone tried to raise the second stone and he succumbed. It turns out that in order to disassemble a chaotic construction, it is necessary to simultaneously take two identical tiles. This rule you will be guided in the game Pile of Tiles, finding and choosing free pebbles that are not blocked by other plates. The process should not endlessly, the heap can also disappear, as it has appeared, so you should hurry up to find identical drawings in the game Pile of Tiles.