Re: Proposal to add standardized variation sequences for chess notation

From: Philippe Verdy <>
Date: Sat, 1 Apr 2017 23:49:30 +0200

I think it's all about sizing so that white or black cells will align,
independantly of the piece that may be within it.
However if FE00 and FE01 give the background color distinction, why is the
base different (25A1 vis. 25A8) for the empty cell, when it is no different
for the same piece (in the same white or black color) ?

I see the separation of the base only for the borders (touching outside the
checkers board), which may also be reduced to a minimal thin edge over a
small margin... or nothing at all (completely transparent) if the font
already includes a thin contrasting cell on the squares (e.g. grey ridges
with 3D effects). The outer backdound on which these borders are drawn may
also be already contrasting with another color (yellow, green, blue), and
checkers may also use other pairs of contrasting colors (e.g. beige/ivery
vs. brown):
The FE00 and FE01 select an Emoji style with more freedom in shapes and
colors for the piece and more precise and coherent sizes but a required
square cell. Their absence just means an isolated piece outside the checker
board and without required backgrounds or without monospaced margins,
suitable for inclusion in text.

2017-04-01 23:30 GMT+02:00 Kent Karlsson <>:

> 2654 FE00; Chesspiece on white; # WHITE CHESS KING
> Why do the ones with white background need a variation selector?
> 25A1 FE00; White chessboard square; # WHITE SQUARE
> 25A8 FE01; Black chessboard square; # SQUARE WITH UPPER RIGHT TO LOWER LEFT
> I see that you want a fallback in case the variation selectors aren't
> supported; but isn't the convention that one "always" start with FE00
> for each character that may have variation selectors applied?
> So in this case, one would only need variation selector FE00; if applied
> to 25A1 or 25A8 giving the chess board variety, if applied to a chess piece
> character, gives "checkered" ("black") background (without, one gets the
> white background).
> Why not use 25A0 BLACK SQUARE with the variation selector? (I know that
> it would not entirely black with the variation selector (if not fallback).)
> I mean, there is no absolute LOGICAL NEED to draw the "black" background
> as WITH UPPER RIGHT TO LOWER LEFT FILL, it could go the other direction
> or be just "gray" (or for that matter medium blue...); font maker choice.
> Kind regards
> /Kent K
Received on Sat Apr 01 2017 - 16:50:20 CDT

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