Sumbers -- Sums of Ups and Downs
Kuo-Yuan Kao · Zenodo (CERN European Organization for Nuclear Research) · 2005
A sumber is a sum of ups, downs and star. We provide a simplification rule that can determine whether a game G is a sumber or not, and if it is, determine the exact sumber of G from its left and right options, GL and GR. Once one knows a game is a sumber, the outcome of the game can be determined by a simple rule