More thoughts about fuseki

Styles and Eras

Historically, 'Shusaku-style' is a term often used for the mainstream theories from 1840 onwards (the major recognised patterns from that time being the Shusaku fuseki itself, the regulation fuseki, and openings (fuseki) in which Black 1 and 3 enclose a corner). ShinFuseki or New Fuseki refers to a period 1933-1935/6 of intense experimentation by Japanese professional players. Sougou fuseki is a name applied to the beginnings of modern theory in the years that followed.

Fuseki and joseki

The part of the fuseki played in one corner is called a joseki. But, more accurately, joseki means any standardised sequence; while fuseki only applies to spread out openings (joban).