Proposal to add standardized variation sequences for chess notation

Michael Everson everson at
Mon Apr 3 16:48:31 CDT 2017

On 3 Apr 2017, at 20:33, Richard Wordingham <richard.wordingham at> 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

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