Fighting Ko The Book

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Fighting Ko
By: Jin Jiang
Translator: Sidney Yuan
Publisher: Yutopian, July 1995
ISBN10 0-9641847-3-7
146 pp.

Fighting Ko is also the title of a Yutopian Go book by Jin Jiang, published in 1995. It is a collection of ko positions and problems.

See fighting ko if this is not what you were looking for.



David Carlton's [ext] review

Velobici: The core of the book are the examples that show how one side can force the other to accept a local loss or accept a serious ko fight. There are about 40 examples, called models by the translator, in Chapter Four. The move sequence that leads to the examples is often shown. The sections on capturing races and counting liberties in Chapter are wonderfully clear and useful. Unfortunately, the answers to the problems and examples in all but Chapter Six follow immediately after the problem diagram.

Table of Contents

  • Chapter One: The Correct Attitude Regarding Ko
  • Chapter Two: Deciding Whether to Initiate a Ko Fight
    • Corner Joseki
    • Deft Handling shinogi
    • Invasion
    • Sealing
  • Chapter Three: Ko Types and their Relationship to Liberties
    • Ko Types and their Relationship to Liberties
    • Unresolvable Ko Threats
    • More Examples of Repeating Ko Situations
    • Capturing Races
    • Eyes and Counting Liberties
    • Sufficient Liberties Kill an Eye
  • Chapter Four: Various Ko Shapes in Real Game Situations
    • 1) Common Ko Shapes in the Corner
    • 2) Common Ko Shapes on the Side of the Board
  • Chapter Five: Examples in Professional Games
    • Examples in Professional Games
  • Chapter Six: Twenty Problems Dealing with Ko
    • Twenty Problems Dealing with Ko

Sample Problems

Note: the diagrams in the text all start from the same move. Here the starting move has been changed as needed to work with the move number display limitations of this wiki.

Chapter 4, Section 2, Model 10  

W1 and W3 are common measures taken in invading this kind of position in the corner. How should B6 be played?

Chapter 4, Section 2, Diagram 10a  

B1 is an attempt to capture White by brute force. W6 is necessary. B7 is a skillful move that shows experience. If Black plays atari against W6, White will connects at circle springing a trap. In the case that Black loses the ko here, and White cuts at a, Black's wall collapses.

Chapter 4, Section 2, Diagram 10b  

The hane of B1 is appropriate. White can only try to live in ko with W4. Although Black will still be damaged if the ko is lost and White captures at a, the situation is much better than in Diagram 10a.

Chapter 4, Section 2, Digram 10c  

White attaches underneath at W3 here avoiding the possibility of ko in the corner. This way, Black gets the corner and can be satisfied. On the other hand, White has sente and has made profit, which would be big in the endgame.

Chapter 4, Section 2, Digram 10d  

B2 and B4 go after outward influence. White's corner is large. The pluses and minuses of this exchange depends upon how it works with the rest of the board.

Is the Go level of the Author of this book actually known? Is he a professional or an amateur? If anyone has information about "Jin Jiang" it'd be nice if he could share them on the SL page linked to his name.

Fighting Ko The Book last edited by tapir on February 23, 2015 - 12:10
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