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YurumiShicho

Referenced by
Ladder
NetExample7
LooseLadder
NonLocalMoveVersu...
Capturing
GetStrongAtJoseki...
GoForBeginners
ProtectingTheCutE...
GoTerms
PracticingReading...
ChineseGoTerms
34PointLowApproac...
NonJosekiExercise...
TacticalDiscussio...
EnglishGoTerms
ThicknessExercise...
CapturingTechniques
KeimaProtectingTh...

 

Loose ladder
  Difficulty: Beginner   Keywords: Tesuji, Tactics

In a loose ladder (yurumi shicho in Japanese), the stones to be captured have at most three liberties (in place of at most two, in a ladder).

[Diagram]
Black to play.

Can Black capture WC?


[Diagram]
Loose ladder


Q: Is this something different from a net?

--Stefan

BillSpight: Interesting question. :-) I suppose you could consider it a kind of net, but it's more specific.

[Diagram]
Net

B1 is a net, but not a loose ladder.



DieterVerhofstadt:

The way I see it, is that a ladder is a capturing technique where the liberties of the chased chain flip between one and two until the defending side is unable to raise the liberties to two again.

A loose ladder would follow exactly the same definition, replacing 1 by 2 and 2 by 3 respectively.

A net on the other hand is a capturing technique so that the liberties of the chased chain can't be increased by the defender's next move.

This contradicts Bill's statement above, but I'm ready to adopt another viewpoint on these definitions.

[Diagram]
geta 1

[Diagram]
geta 2

Both basic examples of net meet my definition.



jvt: Your definition is too restrictive. (Example moved to Net example 7.)

(Well if it is a ladder it is not a net!)

jvt: A successful loose ladder always ends in a ladder (in order to decrease the liberty count from three to zero, you have to go through a stage of 1/2 liberties.

Bill: One thing that a loose ladder and a ladder share, that a net does not, is that they each reduce the liberties of the chain of stones to be captured by one with each play. In a ladder each play is atari. The typical play in a loose ladder is not.




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