Tderz No problemo ...
-
technique learnt from a hamete variant of the taisha (which I never play - the taisha in general)
![[Diagram]](../../diagrams/7/ce8a55827fb8f721753b12229ee3c2c0.png)
Direct ko
Direct ko,
white must search for first ko threat,
![[Diagram]](../../diagrams/20/4704ea8b556b42f3d6f2edb812aea817.png)
Black to play.
Black has 1 internal ko threat.
If ..
![[Diagram]](../../diagrams/10/b315e66657c6dd53a98f17ee4cf58a87.png)
White wants to resist ...
![[Diagram]](../../diagrams/21/d647dff8e223b66fc8d9543b324556d0.png)
futile
![[Diagram]](../../diagrams/4/00d24d66f94b516c338be608fdeaac7c.png)
Possibility
Rich: If you start with
, why not like this?
![[Diagram]](../../diagrams/16/7db73349606eb1a3a1376938134b30c2.png)
Semeai
JoelR: Now each has 3 liberties (including
), plus the shared liberty, and it's White's move.
![[Diagram]](../../diagrams/50/ec173fa99985eb16417cdaf908bb590a.png)
Semeai
TDerz: I missed a lot !
![[Diagram]](../../diagrams/51/96b11d738bd34a9c2aedb939b65a142b.png)
Semeai: White wins
![[Diagram]](../../diagrams/32/19c2eba353c3c5e3a958761483074a9c.png)
Possible danger?
Rich: Although it seems that the black corner is now dead. I've probably missed something...
Tderz:
and
are miai. Black is dead
![[Diagram]](../../diagrams/7/a40506a83aabc16e5efcef3b603a31e9.png)
Black to play.
Tderz: All of this excellent stuff written above proofs:
- I was indeed careless again, and
- Black should better take care of his group:
![[Diagram]](../../diagrams/42/8c302f590daae01ccc329c958839bd9e.png)
Black can't save all and lives in the corner.
![[Diagram]](../../diagrams/25/da415e06385317f535390ce5487f9d47.png)
What if
?
![[Diagram]](../../diagrams/15/e489b930e0599ecafc44f78e886f10f3.png)
Tderz If
above, black captures with living shape.
![[Diagram]](../../diagrams/26/d0b8d07f701545a687bdac2832da5ee5.png)
Or, if
here, it reverts to some upper variations (ko).
![[Diagram]](../../diagrams/34/6cc41db0b3e2d97b730ce8f6c1f6a07f.png)
black loses, if he wants to avoid the ko
![[Diagram]](../../diagrams/32/5cecae4e9f3e64bd4578dbd95cf06733.png)
Liberties
Dieter: Black cannot save his cutting stones but lures out his two stones.
![[Diagram]](../../diagrams/0/609e011069c5ca046fe07c46e08000e8.png)
More
cannot resist due to lack of liberties
![[Diagram]](../../diagrams/1/a914576432e96203dea55993543155ef.png)
Or ...
Or can White do even better?
DJ: This last diagram seems not so good for White:
![[Diagram]](../../diagrams/19/bec111735ad3b1511617947a9df6ec51.png)
Black lives
Now either Black lives or captures also the two stones in the corner. A similar sequence happens if
is at a (
at
):
![[Diagram]](../../diagrams/42/97a95a3aea9af40c1420d7a98cdbfdfc.png)
Black still lives
Tderz: Ode to unkx80 (what a composition) - Wahnsinn - I'm lost.
I gave several careless random shots and linger for the solution:
is Black doomed on both sides??
unkx80: How embarassing... I seemed to have posted a composition that does not work. -_-
I originally have two solutions in mind.
![[Diagram]](../../diagrams/38/c49db61813bcbe9a997dccb183e0b947.png)
Alleged solution 1
![[Diagram]](../../diagrams/38/69a63241ec64783468300f2614096da3.png)
Alleged solution 2
![[Diagram]](../../diagrams/47/5d2ae0fa10bf8801bd17436ee1fc0bf0.png)
Alleged solution 2 failure
But now I think
kills.
Which means, I need to give Black more liberties as follows. Sorry for the blunder.
![[Diagram]](../../diagrams/35/208d8d98072fadc30152b1f371da2c9b.png)
Black to play.
Bill: That's OK, unkx80. Even the gods falter. :-)