# RTG Problem 66 / Attempts

Sub-page of RTGProblem66
White first, W ko

hhw: If White first, she can play at and get a ko at with a after .

Black first, W ko

hhw: If Black first and he protects against the previous path with , White can still get the ko at starting with .

Caution

Not cautious enough

tderz: 'Sakata' on GoDiscussions suggested here, justifying it with the addidional advantage of being 'bigger' ( as are in atari it would even be 'sente').

However, White remains vigilant and throws in @W7= with which results in a transposition to the wrong attempt with (only) i) ko (s.b.) or a nakade too big ii):

i)

same theme, but ... W is alive
only ko

ii)

if Black was connecting at A:

... this would create a living shape !

Herman: Black first

Black first. @
• prevents ko
• threatens to connect
• prevents the connection
• kills the corner
• - remove the eye in the center.
Black first, continued

After , the best white can get is a rabbity six eyeshape in the corner. And since black ahs an eye in the corner, it can never be seki. White is dead.

hhw: Ah, missed the dead shape. That's what I get for attempting so early in the morning. :)

Herman: White first

White first

After , it will be ko

@ , @ , @

unkx80: The people who posted the correct solution are Tommie on godiscussions.com and Herman on Sensei's Library. Unfortunately, Sakata's optimization does not work. Nice work, everybody! =)

As it turns out, the two people who posted the correct solution are also long-timers who are familiar with my style of problems. Admittedly, I have used this theme in a few of my other compositions, except that in this problem I have obscured it with quite a couple of distractions.

I'll post up a summary solution post later.

RTG Problem 66 / Attempts last edited by Unkx80 on November 9, 2009 - 16:24