Tsumego From Games 54

    Keywords: Life & Death, Problem, Question

Board size : 19
Event : 27th Japanese Kisei
Round : league B
Black player : Cho Sonjin
White player : Cho Chikun
Komi : 5.5
Date : 2002-06-20
Result : B+R
Game source : [ext] http://www.go4go.net/
Application : sgf2misc:3.1.9

tderz's 3 questions:

  • 1) Black B189 at c?
  • 2) Confirm that after B215 bent-4
  • 3) How to shape this stuff here into Senseis diagrams?? (in an easy way)

Question 1

[Diagram]

Move 189

While replaying, I wondered if Black attacks at c?

  • Are the 4 stones important?
  • Black can save the important part - or not?
  • Black was winning anyway, so it does not matter so much.
  • There must have been complications and reasons not going for the kill of the big white group with move 189.
  • My question: what were these complications?
[Diagram]

White connects back?

unkx80: I suppose W4 can connect back?

[Diagram]

I thought of this B5 - but it's a hallucination

tderz: Thanks for replying to the questions,

I should have seen this myself!
I only hope that I did not think much at all, otherwise it's embarassing to overlook this connection.


Question 2

[Diagram]

Move 215

I think after 215, the lower right corner is dead by bent-4.

[Diagram]

White lives.

unkx80: W2 to W6 lives. However...

[Diagram]

White loses anyway.

B3 captures two White stones, so I suppose White loses anyway.


Game record

[Diagram]

Moves 1 to 10

[Diagram]

Moves 11 to 20

[Diagram]

Moves 21 to 30

[Diagram]

Moves 31 to 40

[Diagram]

Moves 41 to 50

[Diagram]

Moves 51 to 60

[Diagram]

Moves 61 to 70

[Diagram]

Moves 71 to 80

[Diagram]

Moves 81 to 90

[Diagram]

Moves 91 to 100

[Diagram]

Moves 101 to 110

[Diagram]

Moves 111 to 120

[Diagram]

Moves 121 to 130

[Diagram]

Moves 131 to 140

[Diagram]

Moves 141 to 150

[Diagram]

Moves 151 to 160

[Diagram]

Moves 161 to 170

[Diagram]

Moves 171 to 180

[Diagram]

Moves 181 to 190 (10 at 5)

[Diagram]

Moves 191 to 200

[Diagram]

Moves 201 to 210

[Diagram]

Moves 211 to 215


This is a copy of the living page "Tsumego From Games 54" at Sensei's Library.
(OC) 2012 the Authors, published under the OpenContent License V1.0.
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