Up

    Keywords: EndGame, Theory

For "Up" as a direction on the board see UpAndDown



In Combinatorial Game Theory UP is the name of an infinitesimal, also written ^. UP is defined as

          ^ = { 0 | * }

Left (Black) can play to 0, while Right (White) can play to * (STAR). UP is positive, favoring Left, who gets the last play, no matter who goes first. The opposite of UP is DOWN, also written v.

Some plays with a miai value of 1 chill to UP. (See Chilled Go). Here is an example.

[Diagram]

UP

This position chills to 2^ (2 plus ^). Black can get the last play locally no matter who plays first.


This is a copy of the living page "Up" at Sensei's Library.
(OC) 2014 the Authors, published under the OpenContent License V1.0.
[Welcome to Sensei's Library!]
StartingPoints
ReferenceSection
About