From: Hans Aberg <haberg-1_at_telia.com>

Date: Tue, 14 Apr 2015 10:54:53 +0200

Date: Tue, 14 Apr 2015 10:54:53 +0200

*> On 14 Apr 2015, at 02:21, Garth Wallace <gwalla_at_gmail.com> wrote:
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*>
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*>> On Monday, April 13, 2015, Hans Aberg <haberg-1_at_telia.com> wrote:
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*>>
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*>>> On 13 Apr 2015, at 23:18, Garth Wallace <gwalla_at_gmail.com> 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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*>> 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 placeholders, with their actual identities as pieces assigned on a problem-by-problem basis (only the 180 degree turned queen and knight are fixed by convention, to the grasshopper and nightrider). Think variables, rather than constants. So, for example, in one problem a knight turned 90 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 a knight turned 90 degrees counter-clockwise for the camel instead. Without context, it means "a knight-like piece of some variety, but not an actual knight". This is long-standing practice in fairy chess problems.
*

The mathematical symbols are a mixture of graphical and semantic descriptions. For example

⊂ SUBSET OF U+2282

⇒ RIGHTWARDS DOUBLE ARROW U+21D2

So one can have both.

Received on Tue Apr 14 2015 - 03:57:03 CDT

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