Riddle - two independent systems of internal premises
In all the Egyptian pyramids there is one entrance, one system of tunnels and one main burial chamber. In the Broken Pyramid there are only two.
Of course, in the stepped pyramid of Joser, you can find more than a dozen burial chambers and several entrances, but in this case it is clear that one funeral chamber was intended for the pharaoh, and the rest for the members of his family.
Inside the Broken Pyramid are two independent tunnel systems and two large funerary chambers. One entrance is on the western surface of the building, and the second is on the northern face.
There are no reasonable theories on this score. There is an opinion that Pharaoh did not like the first burial chamber, and he ordered a second one. This justification "Pharaoh did not like" in Egyptology is very common. It is always used in cases where there is nothing more to say.
The most reasonable theory is that the builders provided false premises from the robbers. If so, it clearly did not work. At the time of the "first transition", all the tombs of the Old Kingdom were plundered, and the Broken Pyramid is no exception.
Naturally, information about the secrets of graves is always transmitted verbally from the builders to their descendants. There are ways to completely hide it, as the Chinese did. When the tomb of Qin Shihuandi , the first emperor of China, was closed, all the workers were simply executed. Fortunately, such excesses Egyptians were not carried away.
At the time of the discovery of the tomb by archaeologists from Europe, both systems of tunnels and chambers were already empty.
It turned out that someone had made a passage connecting these two systems of tunnels. This passage was clearly not conceived by the builders of the monument, it looks very "handicraft". It was impossible to penetrate so accurately if one did not know the exact location of both tunnel systems. That is, someone at first opened both entrances, and only then he cut through this passage. Who and why it took - another mystery.
Riddle - the Purpose
Inside there are no traces of sarcophagi, which is very unusual for Egypt. In the pyramids, someone was supposed to be buried, and in this monument, clearly no one was buried and was not.
Riddle - a pyramid satellite
The largest of the pyramid satellites is located right here. It is 26 meters in height and 53 meters in length. Many pharaohs of the Middle Kingdom could not afford such sizes of tombs.
At first, archaeologists assumed that the wife Snofru had to be buried there - Queen Hetepheres. Her real tomb was found in Giza, and in this small pyramid there are no burial trails at all. Now it's hard to say whether her mummy was lying here or not.
It is believed that the pyramid satellite played the role of residence of one of the parts of the soul of the pharaoh - Ka. The Egyptians had very complex ideas about the soul, it consisted of 9 parts. Ka is one of the parts that remained on the ground.
This version is very doubtful, since there are no obvious confirmations to it. Indirectly, the alabaster altar confirms this hypothesis.