# Teire/Attempts2

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Sub-page of Teire

### Problem 2

Problem 2

Where must Black play te-ire?

underlying problem

tderz: once the liberty at is gone,
White can capture at least the 4 left stones by atari-ing at .

Having said this,
any black stone at at any of the points occupied by to ,
or those a, b, which would pt , in atari,
would defend against this threat.

defending moves

tderz: thus, the possible defending moves are: a to g.

Of these, g looks the least attractive,
b the most dangerous (3 ko threats);
a looks quite ok, as one is relatively safe from an attack at p (rests peep c with possible false eye b).
c has one 2 threats (f, d);
f might be in danger after peep c, then jump to p (defense b, q might cost points).

My conclusion: best answer depends on surrounding & actual game situation.

Bill: Yes, but don't you think that a will usually be best? d still allows two ko threats.

defending moves

tderz: yes, normally agreed, as snapback-test can be answered by (direct life), even if a white stone is present at .
Usually it depends on the actual game situation.

snapback-test -> false eye aji

tderz: this allows for making a false eye if is safe.

not biggest - safest life

tderz: Hence, sometimes could be safest (even in the presence of an -> Black has 2 eyes at f and d)

tderz: I was wondering why this found an entry at teire.

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Teire/Attempts2 last edited by tderz on November 29, 2006 - 12:36
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