Splitting Move
A splitting move is a move on the side, splitting two distant opponent configurations, leaving the possibility to extend to one side or the other.
Example
If Black approaches (either point b), White can extend (to either point a). The two extensions are miai.
Another example
Black will want to approach at either b or c, and white will extend at c or a in response.
Remarks
- A move on the side, between enemy positions, leaving no room for an extension, is more generally referred to as an invasion, although there are invasions of frameworks that include the possibility of an extension.
- A move between two enemy stone is called a wedge, although the term wedge may sometimes be used for a splitting move.
- Not to be confused with splitting attack.
Extended example
When the splitting move is pushed toward a hoshi corner, sometimes this pattern is seen:
The exchange of for
may be delayed or omitted. An alternative variation has
at
, with Black running out with
and White taking the corner.
xela: I think is more commonly played at a (and white replies at b), although I've also seen
in pro games. I'm not sure how you'd choose between those two moves; this could maybe be the topic for a separate discussion somewhere (not on this page)?
cynewulf: I think may not be sente enough in some positions, and Black could play at a to make a larger threat. (Feel free to move this discussion, I don't know where it should go.)
(this discussion is linked from Orthodox Fuseki, just as reminder if someone moves it somewhere)
See also: 4-4 point low approach after wedge