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Tedomari
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    Keywords: EndGame, Strategy, Go term

Tedomari means the last play. It is used not only for the last play of the game, but for the last play at different stages, and for the last play before the size of plays (temperature) makes a significant drop. As a general rule you want to try to get tedomari. There is a saying about the last gainful play of the game, Tedomari is worth double.

Here is a simple tedomari problem I composed.

[Diagram]
Tedomari problem

How large are the plays, a, b, and c?
What is the optimal order of play when Black plays first, and what is the result?
What is the optimal order of play when White plays first, and what is the result?

(The optimal order of play obtains the best result for each player.)

TedomariSolution



Getting tedomari is related to infinitesimals and how to play them.

--BillSpight


Here is my best understanding of how to get tedomari, in practical terms:

If you are to play, and the number of plays at the current temperature is odd, you have tedomari. If it is even, you do not have tedomari. In order to get it, you have to change the evenness/oddness of the number of plays available.

This can mean playing a move that denies your opponent two moves. This means you have "taken" three moves with your play, so an odd number of plays becomes even. In practical terms, usually you deny your opponent one move simply by playing where he would like to play (Your Opponent's Good Move Is Your Good Move). So you need to also deny him a potential follow-up move, and you will grab tedomari.

Bill: How about an example?

The other possibility for gaining tedomari is to play a move that gives you two independent follow-ups at the local temperature.

I'm sure there are other tricks, anybody want to post some?

Charles Matthews When it's down to mutual damage, you can call it 'who blinks first'. If after some plays each advancing into the opponents' territory, Black has a threat worth t and White has a threat worth t', Black hopes t is worth noticeably more than t'. Then if it's White's turn, she can choose between (a) stop Black's threat, and so Black's play stopping White's threat gets tedomari, or (b) play the move setting up the threat but allow Black's threat too - White carrying out the threat is tedomari all right but White has already lost too much.


A very nice example of tedomari that you can work out yourself are the problems [ext] 365 and [ext] 368 at goproblems.com.

--dnerra

Bill: They are from Mathematical Go.


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This is a copy of the living page "Tedomari" at Sensei's Library.
(OC) 2003 the Authors, published under the OpenContent License V1.0.