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Miai counting
Difficulty: Intermediate
Keywords: EndGame, Theory
Miai Counting is a method to assess the value of a move.[1] (novices might try: miai counting made easy) Miai counting assigns a count to the position, and a value to a play in the position. The value of the play is how much it gains, on average, if it is a gote or reverse sente, or how much the reverse sente would have gained, if it is a sente. It indicates the importance or urgency of a play.[1]
Black's hane-connect shifts the count to 3 points. (Reuven - Why is it 3 points? Did you mean that white'll play to get 2 eyes after it? But the group seems to be free - Not surrounded - Or should we assume that it is, since it's the endgame?)
White's hane-connect shifts it to 1 point.
Here the local count is 0. Each side has 5 points.
Another example of miai counting is given in Value of a Monkey Jump. Comment: You can compare miai values directly. In general, you make the play with the largest miai value. Also, miai values add and subtract like ordinary numbers. Neither is true of deiri values. -- Bill Spight Question: Do miai values take sente/gote into account? Answer Bill Spight: Yes. You do not have to make any alterations to compare the sizes of sente and gote plays using miai values. Harpreet: I tried to understand this from the Value of a Monkey Jump page but couldn't. Are there any books that teach miai counting? Am I correct in thinking that The Endgame book teaches deiri counting? From what is written above it sounds to me like I should learn this miai counting stuff for purposes of taking into account sente and gote. Is deiri counting more normal? Perhaps that is why it is taught in the The Endgame. I'm trying to make less sloppy endgame plays and I would just like to learn how to count values better and order moves better but between miai, deiri modified by sente, gote I'm not really sure I know what I'm doing. Charles Matthews Since a number of people seem to require further explanation, I'm adapting and moving here part of an article from Gobase: Miai counting - ratio explanation. See Counting Crawls. The Japanese amateur Sakauchi Jun'ei is credited with some of the development of miai counting. I just read most of the miai-counting pages and it is really confusing: there seem to be no clear definition of 'value' and 'count', or people use 'value' instead of 'count'. I need a clear formula for both. Also, suppose you have the miai value and the miai count, which one is most important? What is the relation between the two?
See miai values list for the beginnings of a list to support endgame calculations.
An application with all the calculations would be very helpful, and I suggest this problem (problem 365 of
- For the same question see EndgameHowToFindTheMove and the solution is at EndgameAnalysis1. [1] Charles I think the development and discussion of the miai values list indicates clearly that miai values are attached first to positions, by means of pairs of sequences (best play for Black/best play for White). Karl Knechtel See also the miai values list discussion. [2] The example is not a full board, but part of a board. The stones framing the example are alive. That is a convention started in Mathematical Go, by Berlekamp and Wolfe. This is a copy of the living page "Miai counting" at Sensei's Library. ![]() |