Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!ames!uhccux!munnari.oz.au!goanna!greybox!sheoak!sheoak.bcae!olle From: olle@sheoak.bcae (John Olle) Newsgroups: comp.ai Subject: Re: Chess, Reductionism. Keywords: emergence, chess, reductionism Message-ID: <417@sheoak.bcae.oz> Date: 16 Mar 90 16:23:54 GMT Sender: olle@sheoak.bcae.oz Organization: Bendigo CAE, Australia Lines: 14 (Chris Malcolm) writes: >In chess it is not possible to checkmate a king with _only_ two knights. I assume this means ... a king with only a king and two knights. I don't like to be pedantic but this is not true. It is possible. However, it cannot be forced. There are some positions where a king and two knights can force mate against e.g. a king and a pawn. In these cases the extra material converts a draw into a loss. This might be of interest. Chessplayers of the world unite. John Olle