KPKEG is a production system implementation of a program that plays chess end games, restricted to king and pawn versus king. The program is described and several examples; of its operation are discussed. The program's chess knowledge is given, and how this knowledge is expressed as productions is described. Experiments with KPKEG have brought out several features of the principle on which the search is based and the chess knowledge organized, the strategy hierarchy. Features of the productions and how they compare with a Lisp version of a similar program bring out the advantages of this implementation. The productions lend themselves readily to extension to more demanding chess tasks. (Author)