Double threat ladder-maker

  Difficulty: Advanced   Keywords: Tactics
Setting up two ladders  

When Black plays black+circle rather than connecting solidly, it gives White the option of W1 and W3 to set up two ladders (White at a and White at b). This is a typical crawling fight tactic.

Of course in this case Black may be content to exchange with Black c, White b now.

Another example comes up in the tenuki line of the tsukehiki joseki (see 3-4 point high approach, inside contact, tenuki variation).

After White's tenuki  

Here B1 after the black+circle/white+circle exchange depends on a ladder. More exactly White would now like to play hane at a.

Dealing with the cut  

After the cut B2, it seems that W5 is a double-threat ladder-maker, setting up White next at a or b. ( References: Get Strong at Joseki Vol. 1 p18, Ishida Vol. 2 p21 )

There is discussion of follow up moves of this joseki variation at 34PointHighApproachInsideContactTenukiVariation.

This is from BQM 15.

Variation 1: the ladder  

In this case Black is probably happy to exchange the black+circle stones for the white+circle (the reason being that Black earlier made a joseki mistake).

What is said on BQM 15 is this.

White extends  

Suppose W1 is played: then Black should have a good ladder with B2 - or else not begin this variation.

Black pushes on  

One should add a little more: B1 here must be answered by White, so that Black has an option of a alternative ladder also. Depending on the precise position in the lower right, this might be important.

Black might have a chance to push once more at a: reading required.

Charles Matthews

See also

Double threat ladder-maker last edited by PeterHB on September 15, 2010 - 06:23
RecentChanges · StartingPoints · About
Edit page ·Search · Related · Page info · Latest diff
[Welcome to Sensei's Library!]
Search position
Page history
Latest page diff
Partner sites:
Go Teaching Ladder
Login / Prefs
Sensei's Library