Difficulty: Beginner   Keywords: Tesuji, Question

This is a problem in a book I'm reading:


Black to play and capture the two white stones. The book tells me Black's best move is a, and White's best response is c, and I understand the rest of the sequence. But why is White's best move c? What happens if White plays b instead?

(note: Thanks to everyone. Misread the book. Black plays at b not a ...)


unkx80: Was there a typo in the book? I think the solution should be this.

icepick: This is what is termed the Crosscut Tesuji, from TesujiTheBook. unkx80's solution is correct.

Possible Continuation  

unkx80: Consider playing B7 at a instead.


This is a given variation that can be tricky for Black. As Dieter pointed out, B3 is the correct follow up.

Dieter's move  

This is Dieter's proposed move (B3). It looks good - this way Black not only captures the two cutting stones, but also the marked stone and W2. - Andre Engels, after improvement/correction by Dieter

Another one.  

unkx80: While you are at it consider this one. Of course you would have known the correct solution already, but what if...?


Andre Engels: Dieter's descent again resolves the problem. Charles It may do; but now White at a is a reading problem. Andre Engels: The solution seems to be that Black connects at b and wins the capturing race by one move. But this position is surely more complicated than the books usually show.

Descent again  

Bill: Shouldn't Black descend again with B1? Then it's me ari me nashi. The above is one variation. If W2 is at B3, B3 is at W2.

BQM80 last edited by Dieter on September 16, 2008 - 14:24
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