# Kyu Exercise 45 / Solution

Sub-page of KyuExercise45

 Table of contentsProblem I Black first White first Problem II White first Table of diagramsWhite dies. White lives. Comment. Failure - ko. Failure - death. Failure - death. White's strongest resistance. White dies. White dies. Comment. Failure - ko.

## Problem I

### Black first

White dies.

turns the potential eye at the top side into a false one. White can only make at most one eye at the center, so White dies.

### White first

White lives.

The descent at is key. It makes capturing at and making the second eye at miai, so White lives.

Mikesh: Is there a reason why B plays instead of directly ?

Comment.

Starting with the atari with lives as well, but White makes an unneccessary sacrifice.

Failure - ko.

Making an atari at is a failure. White's only saving grace is to live with a ko at and .

Failure - death.

makes only one eye on the upper side.

Failure - death.

is interesting. However, kills unconditionally. Note that is sente. If at , then at .

## Problem II

### White first

White's strongest resistance.

is White's strongest resistance.

White dies.

is tesuji, White dies.

White dies.

If , connects and finished the job.

Comment.

Having the exchange at and does not help White at all.

Failure - ko.

Black saves two stones at , but at a price of allowing White to get a ko for life.

Kyu Exercise 45 / Solution last edited by 95.116.18.215 on October 22, 2009 - 19:52
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