The Chess Variant Pages

Check out Marseillais Chess, our featured variant for February, 2024.

Enter Your Reply

The Comment You're Replying To
Greg Strong wrote on Tue, Nov 15, 2022 11:51 PM UTC in reply to H. G. Muller from 04:30 PM:

I just wanted to point out that a variant having both mandatory capture and the checking rule does exist.

Indeed it does.  So this is another use for IllegalUnlessOnly (I'd like to think of a better name for that. IllegalUnlessExclusive maybe?)

For positional evaluation in this game, is everything basically negative?  My frist thought was to make the material values of the pieces negative.  But it's also bad to have one's pieces in the center, so the PSTs are basically negative also.  And maybe everything ... having your rook on an open file is bad.  A knight outpost is bad.  Is "good" pawn structure also bad?  On that, I'm not sure.

And if everything is reversed, maybe just invert the eval after everything? (assuming it's not a mate score, -INFINITY is still -INFINITY).  Just thinking out loud.  And I don't currently have a "hook" in place for adjusting the whole eval after calculation but I could easily add one.  The whole "losing genre" jenre is one I would like to support...

Edit Form

Comment on the page Giveaway Chess

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.