sub-orthodox formation

Less ambitious than 4-4  

This opening formation on a side has some common characteristics with the orthodox fuseki. The position of the 3-3 point does make it harder for Black to develop here on a really large scale. Therefore it is less urgent for the opponent to play a wedge on the side to break it up, in this case.

This is one of a number of 3-3 point plus enclosure formations that were popular in the Sakata era 1960-1965. See also Hosai's formation.