Approach in TsumeGo

    Keywords: Life & Death

Approach in TsumeGo

TsumeGo problems can be approached in many different ways.
As the aim is usually to kill (live) or threaten to do so and reap some profit, everything related to eyespace & connection is very important:

  • sealing in a group can create a TsumeGo problem?, then ...
  • reducing the (possibilities for) eyespace is usually very promising, hence often comes first, as
    • hane (proverb)[10]
    • exploiting cutting points, reducing liberties?[20]: to capture the cutting stones inside his own group (semedori), the defender has to fill up his own eyespace
  • tesuji [40], either as additional miscellaneous category or as part of above tactics to reduce liberties, create cutting points etc.
    • ... examples
  • cutting the group [50] further apart (hence not inside the eyespace as above), takes away eyespace from the remaining parts of the group and takes ways 1 sente (tempo) from at least one part of the group (if the defender's aim is to survive with all). In normal play this is often the first, preparing phase for setting up a TsumeGo scenario: the group is cut off from the center and has no links to friendly, alive groups.
  • something else? (please add)

It is usually pattern recognition? due to experience of e.g. previously solved problems, which gives you a hint what to investigate & where to start first.
This can happen in an instant.
As Go is about the order of moves, verification of the sequence is very important and can take much, much longer.

This also explains the difference in difficulty, if given as a problem or during play. A 'Problem' has a solution, whereas in a game, time efficiency is required too.


TsumeGo for making life:

Things are often simply inverse:

  • [10] enlarge eyespace, play where a hane could kill
  • [20] protect, in good shape
  • [30] play there yourself
  • [40] play own tesujis for a given purpose (misc.)
  • [50] assuring connection, in good (eye) shape, in sente, etc.


I found this list on Tom.com:
[ext] http://weiqi.sports.tom.com/secondary/wskt/zhongji/spr_wq_zhong_sihuo_01.htm gives this order with many examples:

  • 死活的要点 Essential points of Tsume Go
  • 死活棋的思考方法 Thinking method in Tsume Go
    • 一、死活棋的分类 Tsume Go classification
      •   (一)扩大空间作活 expanding eyespace creates life
      •   (二)使用技巧作活 employed techniques for life
    • 二、死活棋的技巧 TsumeGo technique ( jì qiǎo )
      •   (一)扑、倒扑与要倒扑 Throw-in, snapback and preparing?(wanting) snapback
      •   (二)从外面攻杀 kill by attacking from the outside
      •   (三)左右同形占据中央 Play on the Point of Symmetry
      •   (四)气紧的重要性 Importance of liberties
      •   (五)次序的重要性 Importance of order of moves
      •   (六)敌方要点即我方要点 opponent's vital point is my vital point
      •   (七)倒脱靴 Under the stones - Ishinoshita
      •   (八)“二.一”路的妙手 1-2 point brilliancies
      •   (九)一路上的妙手 first line brilliancies
      •   (十)弃子之妙 the art of sacrificing
      •   (十一)角上的特殊性 special properties of the corner
      •   (十二)各类手筋 various kinds of tesuji
      •   (十三)间接反击 indirect counter-attack
      •   (十四)利用外围棋子的关系 making use of surrounding stones
    • 三、劫的知识 Ko knowledge
      •   (一)紧劫 direct ko
      •   (二)缓气劫 approach ko
      •   (三)两手劫 two-step ko
      •   (四)连环劫 double ko
      •   (五)三劫循环 triple ko
      •   (六)万年劫 10,000 year ko
      •   (七)长生劫 Eternal Life (ko)
      •   (八)盘角曲四 Bent four in the corner


/TsumeGoTraining


ilan: I suppose this is assumed in problems, but the first step should really be sealing in, which is necessary for reducing eye space. I guess it goes like this: sealing a group in creates a tsumego problem.


This is a copy of the living page "Approach in TsumeGo" at Sensei's Library.
(OC) 2007 the Authors, published under the OpenContent License V1.0.
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