The BURGERHASH POW (Proof Of Work) algorithm is being developed with a specific goal in mind:
In order to be able to achieve this, the complexity of the algorithm has to be increased every 100k blocks (ca 10 weeks).
These updates require a fork each time, and have to follow a strict rule set to qualify as candidate:
1) 2) and 3) are mandatory, while 4) and 5) serve as mere guide lines that may be subject to change

Burgerhash V4

Burgerhash V3

Burgerhash V2

Burgerhash V1