Sum Game
Difficulty: Intermediate Keywords: Theory
In Combinatorial Game Theory, the sum of two games
G = {GL, ...| GR, ...} H = {HL, ...| HR, ...}
is defined as
G + H = {GL+H, ..., G+HL, ... | GR+H, ..., G+HR, ...}
If G and H are numbers, this is the natural addition of numbers.
In Go, the sum corresponds to two independent local situations (or boards) treated together.
See also