From: Garth Wallace <gwalla_at_gmail.com>

Date: Tue, 14 Apr 2015 07:46:47 -0700

Date: Tue, 14 Apr 2015 07:46:47 -0700

On Tuesday, April 14, 2015, Hans Åberg <hans.gustav.aberg_at_icloud.com> wrote:

*>
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*> > On 14 Apr 2015, at 02:21, Garth Wallace <gwalla_at_gmail.com <javascript:;>>
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*> wrote:
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*> >
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*> >> On Monday, April 13, 2015, Hans Aberg <haberg-1_at_telia.com
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*> <javascript:;>> wrote:
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*> >>
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*> >> > On 13 Apr 2015, at 23:18, Garth Wallace <gwalla_at_gmail.com
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*> <javascript:;>> wrote:
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*> >> >
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*> >> > I'm much further along on my research for a proposal to encode
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*> >> > heterodox chess symbols. I asked about terms for rotations last
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*> >> > November and was told that the terms in use in the standard are
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*> >> > CLOCKWISE-ROTATED and ANTICLOCKWISE-ROTATED (e.g. U+29BC), but I
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*> >> > wasn't sure I would be proposing the knights in intermediate 45 degree
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*> >> > rotations.
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*> >>
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*> >> Have you checked if they are here:
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*> >>
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*> http://www.chessvariants.org/index/mainquery.php?type=Piececlopedia&orderby=LinkText&displayauthor=1&displayinventor=1&usethisheading=Piececlopedia
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*> >>
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*> > The Piececlopedia doesn't really address symbols directly, it
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*> > describes pieces by their moves. Rotated chess piece symbols are used as
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*> placeholders, with their actual identities as pieces assigned on a
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*> problem-by-problem basis (only the 180 degree turned queen and knight are
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*> fixed by convention, to the grasshopper and nightrider). Think variables,
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*> rather than constants. So, for example, in one problem a knight turned 90
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*> degrees clockwise may be a camel (1,3 leaper), in
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*> > another problem a mao (xiangqi horse), and still another problem may use
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*> a knight turned 90 degrees counter-clockwise for the camel instead. Without
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*> context, it means "a knight-like piece of some variety, but not an actual
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*> knight". This is long-standing practice in fairy chess problems.
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*>
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*> The mathematical symbols are a mixture of graphical and semantic
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*> descriptions. For example
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*> ⊂ SUBSET OF U+2282
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*> ⇒ RIGHTWARDS DOUBLE ARROW U+21D2
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*> So one can have both.
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*>
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*>
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*> Yes, and so far my proposal also covers some dedicated compound piece
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symbols, but my question is about naming some of the rotated ones.

Received on Tue Apr 14 2015 - 09:48:13 CDT

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