# Opening Systematic Classification / Dieters Proposal

I propose to classify opening patterns (fuseki) according to the first four moves, assuming they are either star points or 3-4 points. That already makes for ~70 different distributions, including symmetry. Usually, openings are classified from Black's perspective, as Black has the initiative. We usually don't differentiate White's choices to play 4-4 or 3-4 and so we can simplify the classification by assuming two white star points.

# Four star points

Parallel star points

Parallel star point opening?, which can lead into the san ren sei opening? at a.

Diagonal star points

Diagonal star point opening?

# One 3-4 point

Parallel facing

This leads to the Chinese opening, a or the Kobayashi opening, b.

Parallel non-facing

This can lead into the orthodox opening?, a, or the small Chinese opening, b.

Diagonal

Due to symmetry, there's only one diagonal pattern with one 3-4 stone.

# Two 3-4 points

Parallel facing (mukai komoku)
Parallel non-facing

(to be explored as it looks very awkward and rare)

Parallel mixed
Diagonal facing same star point
Diagonal facing different star point

Opening Systematic Classification / Dieters Proposal last edited by Dieter on June 25, 2020 - 11:02