Summary
Anonymous summary...
![[Diagram]](../../diagrams/10/e55ab7de8d84bba94a8aa9c177f3e1cc.png)
IT'S ALIVE
Black lives (without ko.)
![[Diagram]](../../diagrams/37/594508e2ebc1a9714beb5f4300c87568.png)
Bad for white (can't play at a)
Trying to kill only lets black get bigger life.
![[Diagram]](../../diagrams/1/ade11cd69915da36322a2c064d0a3078.png)
Double ko
Even if white has infinite ko threats, black is alive. White never gets a chance to fill a, because black can always take one of the kos, and thus threatening to make unconditional life by taking the other.
![[Diagram]](../../diagrams/36/501bff5c12060f52857cdcd6a9e6614f.png)
Ko
Black makes a ko for life.
![[Diagram]](../../diagrams/19/a32726a4c7e3b6bd5b5d3a81e15636d3.png)
Ko (not small)
captures This is (probably?) the best way for black to play after
.
![[Diagram]](../../diagrams/52/282c952a3f4a0faf61bd096efbd59708.png)
Ko (continued)
Black takes first.
![[Diagram]](../../diagrams/44/525a1c2bf33c65e0cea1f36be3542cc3.png)
is too greedy
This
fails, since
at
kills.
![[Diagram]](../../diagrams/46/3eb81d0e46e3d4dacf70cfeb75b6c55b.png)
o_O
I am unsure how white counters this
. a, b, c, and d are possibilities. After other moves, black makes life with d.
![[Diagram]](../../diagrams/37/3956a251b8cc74068230a0f7ef18d10d.png)
Dead
and
are sente,
takes the vital point.
![[Diagram]](../../diagrams/7/529030d1425a9a43d0961ab08dccc9b1.png)
This
dies too
![[Diagram]](../../diagrams/38/01b482735fb4f026f4047877a662a090.png)
Bulky five, so
dies
![[Diagram]](../../diagrams/14/0cd5ddcf983493525ec993c0365ebdbd.png)
This
seems to transpose into other lines...?
This might work
![[Diagram]](../../diagrams/32/8bd7c4f8d5c5ff82c6db9695b7abb174.png)
Black lives, I hope...
Black lives.
![[Diagram]](../../diagrams/48/1324614eb4366a139a9acccb42ad5052.png)
I think this would be white's response...
This looks like black dies... the real solution is at the 2-2 point, as shown below? --Anon
Failure 1 (Dead)
![[Diagram]](../../diagrams/8/517528ebb205f1257c4ae843a53748cf.png)
Failure 1 (Dead)
Black dies.
Failure 2 (Ko - Black can do better)
![[Diagram]](../../diagrams/8/f44467c9eb6b2884a56ed584c7fa6c73.png)
Failure 2 (Ko)
takes at
. Next:
![[Diagram]](../../diagrams/52/282c952a3f4a0faf61bd096efbd59708.png)
Failure 2 (continued)
takes back, and after
and
a ko fight ensues. Black can do better than that.
![[Diagram]](../../diagrams/22/dd6ce02e097f8fbb45d288a4c1693ec9.png)
How about?
takes at
,
at 2.
Bill: The writer was under the misapprehension that
could be played at 2. The corrected sequence shows that Black dies.
![[Diagram]](../../diagrams/10/2529a556c2b5027a14e6064b0ec89e7a.png)
Or? (4 at 2, 7 at
)
![[Diagram]](../../diagrams/27/dfa182c9920ca95533aa683fac83030f.png)
Or? (Corrected.)
fills at
.
Bill: Through
Black lives, but
is an error.
Attempt 3
![[Diagram]](../../diagrams/1/6f60d1b8d9778dc32ccf32e3939fd124.png)
Atari
Bill:
looks OK.
Then
-
is sente.
In a real game, I think that the ko (Failure 2) is often better than giving up so much for small life. :-)
![[Diagram]](../../diagrams/49/1def3e570b32e401cad17d78699fa6d0.png)
Double ko
Here is a variation I like. Black is alive in double ko.
was a real blind spot for me. I had then expected
here, and Black still lives.
![[Diagram]](../../diagrams/32/5621421fe0a0d5497fbb4726e329d315.png)
Solution 3