Variations of Our Solution (I)
VAR

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(Referenced by
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This is also shown in the chapter about the historical development of our amateurs' knowledge ( |
Ko: |
Doing without a protective move like this is possible for White, but the ko-fight will become unnecessarily protracted. |
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Ko: |
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All of White's White's centre group has six effective liberties (3 * w, 3 * c) left. Connecting the hanezeki's tail makes no sense now, because Black's connected group on the lower edge will have five effective liberties only. Black's suicidal ko-threat at |
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Thereafter, she will capture Black's connected group on the bottom, winning the game. |

225
72
:
,
, and
, in the upper right corner (as well as the throw-in of
in the centre) in reserve, for the later application as ko-threats. !!! 
;
;
; 
: (A
85
:
;
;
;
;
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; 
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, and
.
:
, instead.
:
-groups on the left side have two liberties more than Black's nakade-stones
. This means that there are no valid ko-threats in the nakade any more.
:
:
