Crane's Nest Tesuji

White to capture the black stones  

Black has just played , with the intention of connecting his three stones on the left with . How can White capture those stones?

White 2 is tesuji  

White captures the stones with the crane's nest tesuji. ( at )

--MortenPahle

In Poland we call this tesuji kraszek (in English you could say crashek) after Janusz Kraszek.

--Marcin Kaminski

Proverbs:

• Play on the point of symmetry.
• Play at the centre of three stones.

Black might try to connect through a...  

You can do a variation of this tesuji to four stones as well.

But White 2 is tesuji here.  

You can learn a lot from tesuji even if you don't get to play those exact tesuji :)

Problem 1 solution  

blacklabel: black is dead. is tesuji. if black tries to escape at , white answers at . useless since is snapback ( at b). if white plays 1 at 2 black can escape at 1 and whites cut at a would be atari after black plays b

Problem 2 solution  

blacklabel: black is dead. white plays , tries to escape, and cuts. useless, since creates snapback( at b). note white has to attack from above. otherwise cutting stone (which would be at a is atari after black b and black can escape.

so 1 really is tesuji here, every other play lets black escape killing the 4 whites on the side and leaving the rest crumbled