William A. Fink,
an American early microcomputer chess programmer and author of the commercial chess program Sfinks , written in Z80-assembly for a TRS-80 microcomputer, later ported to 8086 for the IBM PC.
In his 1982 ICCA Newsletter article An Enhancement to the Iterative, Alpha-Beta, Minimax Search Procedure , William Fink describes the implementation of a small refutation table inside his iterative alpha-beta framework - to keep two moves of the variation for each root move, and to search those moves first accordingly during the next iteration.
- William Fink (1981). Sfinks riddles Sargon II. Personal Computing, Vol. 5, No. 3, pp. 104 » Sargon
- William Fink (1982). An Enhancement to the Iterative, Alpha-Beta, Minimax Search Procedure. ICCA Newsletter, Vol. 5, No. 1