# RTG Problem 63 / Discussion

Sub-page of RTGProblem63
Black to play and kill white unconditionally

Herman Hiddema: This problem is very difficult for me, because there are so many viable options. At first glance, all of the moves a-e seem like reasonable attempts. That makes the reading very wide.

Many variations end in ko or seki, though sometimes it is difficult to see how white can achieve it. Finding strongest play for both sides takes a lot of effort.

So when considering the moves a-e, each of them turns in to a new complicated problem where white has to try and live. And each of them has multiple possible answers

 Table of contentsOption a Option b Option c Option d Option e Table of diagramsBlack to play and kill white unconditionally Can white live after a? Can white live after b? Can white live after c? Can white live after d? Can white live after e?

## Option a

White to try and live (or at least get ko or seki)

Can white live after a?

## Option b

White to try and live (or at least get ko or seki)

Can white live after b?

## Option c

White to try and live (or at least get ko or seki)

Can white live after c?

## Option d

White to try and live (or at least get ko or seki)

Can white live after d?

## Option e

White to try and live (or at least get ko or seki)

Can white live after e?

RTG Problem 63 / Discussion last edited by HermanHiddema on March 31, 2008 - 16:52