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Ponuki

Referenced by
33PointInvasion
ShapesAndConnections
HaengmaDiscussion
AStaticTreatiseOn...
AtariFromCrosscut
Timing
BasicInstinct
ExtensionFromAWall
Diamond
APonnukiIsWorthTh...
InstantEyeTester
LightPlayExample2
PGB41
AddAnotherOneAndT...
LargeHandicapGame...
GuineaPigsFeedback
44Point33Invasion...
AttachStaircase
JumpingOutWithThe...
CaptureTheCutting...

 

Ponnuki
  Difficulty: Beginner   Keywords: Shape

[Diagram]
ponnuki

A ponnuki is the process of capturing a single stone, leaving a diamond shape.

This move and its resulting shape, radiating influence in all directions, is considered a very good one, as is witnessed by the proverb "A ponnuki is worth thirty points".

That does depend on the positions of other friendly black stones: a good ponnuki is under-concentrated, not overconcentrated



Comments

(earlier on, the definition was limited to the diamond shape)

DaveSigaty: The interesting question here is whether the value comes from the shape or the act of capturing a stone. I seem to remember reading somewhere that the ponnuki is efficient when it is formed by capturing a stone (effectively building this shape with only three moves). However, if Black constructs the shape without capturing a stone it is inefficient. This makes a lot of sense when you think about it. This type of thinking is an important point for us amateurs to understand.

Charles Matthews The ponnuki definitely refers to the act of capture, not the shape itself. Dave's point is correct. See diamond for the shape without its history.



This is a copy of the living page "Ponnuki" at Sensei's Library.
(OC) 2003 the Authors, published under the OpenContent License V1.0.