Intertwined Ladders

  Difficulty: Beginner   Keywords: Tactics

Note: The term "intertwined ladders" is not an established Go term.

[Diagram]
Intertwined ladder  

Here are two ladders that are intertwined together. It occasionally appears in games. Some people use the ambiguous term "double ladders" to describe this.

There is an example from a professional game below.

[Diagram]
Intertwined ladder  

Such a ladder is hardly stable, because players alternatively get the choice to continue the ladder, or to break out of the intertwined ladders using a double atari like the one shown in this diagram.


[Diagram]

Hane vs. Yamashita, 2006 Kisei Game 1, alternative to move 89

Shukan Go, in its 2006-01-30 issue, gave a commentary on the 1st game of the 2006 Kisei match between Hane Naoki and Yamashita Keigo, showing how Black (Yamashita) would be destroyed if he cut with B1 at move 89 and then pulled his stone out with B3. Yamashita instead played at the circled point and went on to win the game.

The term double shicho is apparently not used in Japan. Instead the commentary described the sequence as "linked shichos".

[Diagram]
Moves 99 to 108  
[Diagram]
Moves 109 to 118  
[Diagram]
Moves 119 to 128  
[Diagram]
Moves 129 to 138  
[Diagram]
Moves 139 to 144  

See also:


Intertwined Ladders last edited by TheBigH on May 26, 2012 - 06:30
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