Description

This article is from the Go FAQ, by Morten PAHLE gofaq@pahle.org.uk with numerous contributions by others.

5.4. What are miai and deiri counting? (Go)

Both are methods of estimating the value of endgame moves. This
position is an example:

 # # # # # # O O O O O
 # . . . . # O . . . O    (all stones independently alive)
 # . . . . . . . . . O
-----------------------

Deiri counting states the difference in the scores for Black or White
playing first, and whether it is sente or gote (see section 7.2) for
either side. Thus, this example is 2 points in gote (because either
side can hane and connect in gote).

Miai counting assigns a count to the position, and a value to a play
in the position. In this example, the count is 2 (Black has 2 points
more than White) and the miai value is 1 (Black's hane-connect shifts
the count to 3, while White's shifts it to 1).

 

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