Check out Grant Acedrex, our featured variant for April, 2024.

Enter Your Reply

The Comment You're Replying To
🕸Fergus Duniho wrote on Thu, Feb 17, 2005 03:47 AM UTC:
Peter, I did have Potential Chess in mind, since I was still living in
Rochester when David created it, and he told me about it. But I don't
remember if we ever actually played it. I'm meaning to elaborate on the
rules of Symposium Chess to fill in the details. Regarding check, here's
what I have in mind. 

When both of a player's Monarchs are checked simultaneously, he must move
to eliminate one or both checks. If he cannot eliminate either check, it is
checkmate. If he eliminates only one check, the one no longer in check then
becomes the King, and the one left in check becomes the Queen. If this is
done by moving one of the Monarchs, it must move as a King, since this is
the Monarch that will become a King. If he can eliminate both checks, such
as by capturing a piece forking the two Monarchs, and this does not involve
moving one Monarch as a Queen, then the two Monarchs remain Monarchs.

If a single Monarch is checked, and it is left in check, then it becomes a
Queen, and the other Monarch becomes King.

If a Monarch is deliberately moved into check, it becomes the Queen, and
the other Monarch becomes King.

It is illegal to make a move that puts both of one's Monarchs into
check.

The general rules are that you cannot do anything with two Monarchs that
you cannot do with a King and Queen, no move may treat a Monarch as though
it were both a King and a Queen, and when any move is legal only under the
assumption that one Monarch is specifically a King or specifically a
Queen, then the two Monarchs immediately differentiate into King and
Queen.

If Sinister Queens Chess increases White's advantage, then that supports
the importance of bilateral symmetry over diagonal symmetry.

While a leaperless combination of Episcopal Chess and Bigamous Chess might
be closer to Derek's ideal, that was never the goal of this project, which
is merely to create symmetric variants that are as close as possible to
Chess. The idea is to change only one factor, asymmetry to symmetry, and
see whether this is an improvement. Removing the Knights would spoil the
results of any comparison.

Edit Form

Comment on the page Experiments in Symmetry

Conduct Guidelines
This is a Chess variants website, not a general forum.
Please limit your comments to Chess variants or the operation of this site.
Keep this website a safe space for Chess variant hobbyists of all stripes.
Because we want people to feel comfortable here no matter what their political or religious beliefs might be, we ask you to avoid discussing politics, religion, or other controversial subjects here. No matter how passionately you feel about any of these subjects, just take it someplace else.
Quick Markdown Guide

By default, new comments may be entered as Markdown, simple markup syntax designed to be readable and not look like markup. Comments stored as Markdown will be converted to HTML by Parsedown before displaying them. This follows the Github Flavored Markdown Spec with support for Markdown Extra. For a good overview of Markdown in general, check out the Markdown Guide. Here is a quick comparison of some commonly used Markdown with the rendered result:

Top level header: <H1>

Block quote

Second paragraph in block quote

First Paragraph of response. Italics, bold, and bold italics.

Second Paragraph after blank line. Here is some HTML code mixed in with the Markdown, and here is the same <U>HTML code</U> enclosed by backticks.

Secondary Header: <H2>

  • Unordered list item
  • Second unordered list item
  • New unordered list
    • Nested list item

Third Level header <H3>

  1. An ordered list item.
  2. A second ordered list item with the same number.
  3. A third ordered list item.
Here is some preformatted text.
  This line begins with some indentation.
    This begins with even more indentation.
And this line has no indentation.

Alt text for a graphic image

A definition list
A list of terms, each with one or more definitions following it.
An HTML construct using the tags <DL>, <DT> and <DD>.
A term
Its definition after a colon.
A second definition.
A third definition.
Another term following a blank line
The definition of that term.