On 3 Apr 2017, at 20:33, Richard Wordingham <richard.wording...@ntlworld.com> wrote:
> There was no intention to encode the bishops separately. It just happens > that the rules of chess allow one to distinguish the bishops > simply by recording the colour of the square they are currently on. That only works for them though. > The basic text elements in the scheme other than boundary markers will be: > > empty white square > empty black square > white square with specific piece on it > black square with specific piece on it. Or rather, in terms of the font glyphs: light square dark square specific piece surrounded by light square specific piece surrounded by dark square > If the variation selectors are ignored, these simplify to: > > white square > hatched square > specific piece > > This preserves all the information; the pattern of squares is known in > advance and therefore redundant. Yes, this is what I’ve proposed. Michael Everson